Re: Newbie Data Grid question

[James Hurley]

---

Message: 15
Date: Tue, 15 Dec 2009 18:52:52 -0800
From: Jim Ault 
Subject: Re: Newbie Data Grid question
To: How to use Revolution 
Message-ID: 
Content-Type: text/plain;   charset=ISO-8859-1; format=flowed;  
delsp=yes

One valuable technique for understanding the DataGrid inner workings.

In Rev, choose the pointer tool, click on a data grid, then go the
inspector, choose 'custom properties' from the drop down,

and now check out the property sets.  You should see dgProps and  
dgCache

Note all the properties that have been created when the data grid was
created.
Of course you can edit the values here, but you can also change them
in script lines.

One bit of confusion for me is that there is no dgText property set
visible here.  The syntax

set the dgText [ true ] of group "DataGrid"  to tHeaders

would logically mean that there would be a custom property set  
"dgText"


Interesting if you click on dgProps "row template" you will see:
group id 1011 of card id 1010 of stack "Data Grid Templates
1260751174078"

...at least in my version of Rev 3.5

Hope this helps in your travels.

Jim Ault
Las Vegas



Jim,

Thanks for this. I tried this, hoping for the same insight you  
discovered, but I don't see anything in the custom property set.


Are you looking at the dgProps of the data grid group?

Jim
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Re: Newbie Data Grid question

[Andre.Bisseret]

Bonjour,

Le 16 déc. 09 à 06:12, Trevor DeVore a écrit :


On Dec 16, 2009, at 12:04 AM, James Hurley wrote:

It's okay, the Data Grid likes to be beta up on once and a while :-)


As long as this is still in Beta, may I make a suggestion?


Sorry, that was supposed to be "beat" not "beta".


:-o))


(Does anyone ever let the possibility of the answer be "no" stop  
them?)

I had assumed when I saw the following code in the guide:

 put field "data" into tData
 put true into pFirstLineContainsHeaders
 set the dgText [ pFirstLineContainsHeaders ] of group "DataGrid 2"  
to tData


I assumed that  the data grid would function in much the same way  
that FileMaker does when importing an Excel file, i.e. it allows  
one to assign the items in the first line of the file to field  
names and the rest of the llines to populate these fields. That  
would be a reasonable behavior of  
"dgText[pFirstLineContainsHeaders]" il.e. when the parameter is  
true, the column headings are taken from the first line of the text  
field and the rest go into filling the columns.


I must confess that I interpreted this code in the same way
in particular, I think, because this phrase "If true then the data  
grid will extract the first line of pText …"



The first line is only used to tell the data grid which columns to  
map the rest of the data to. If you want to create columns then you  
will need to set the dgProp["columns"] property.

That's OK for me now, Trevor :-)
Might be nice to elaborate a bit in this lesson to prevent from this  
misinterpretation.


Best regards from Grenoble

André



You can't really use multiple parameters when using setProp (which  
is what dgText is). I'm kind of fudging things a bit by treating  
dgText as a custom property set and pFirstLineContainsHeaders as the  
custom property. The truth is we still don't have access to a very  
expressive syntax when creating custom controls (which the Data Grid  
is one).


--
Trevor DeVore
Blue Mango Learning Systems
ScreenSteps: http://www.screensteps.com
Releasable Revolution Resources for Developers: 
http://revolution.bluemangolearning.com
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Re: Newbie Data Grid question

[Trevor DeVore]

On Dec 16, 2009, at 12:04 AM, James Hurley wrote:

It's okay, the Data Grid likes to be beta up on once and a while :-)


As long as this is still in Beta, may I make a suggestion?


Sorry, that was supposed to be "beat" not "beta".

(Does anyone ever let the possibility of the answer be "no" stop  
them?)

I had assumed when I saw the following code in the guide:

  put field "data" into tData
  put true into pFirstLineContainsHeaders
  set the dgText [ pFirstLineContainsHeaders ] of group "DataGrid 2"  
to tData


I assumed that  the data grid would function in much the same way  
that FileMaker does when importing an Excel file, i.e. it allows one  
to assign the items in the first line of the file to field names and  
the rest of the llines to populate these fields. That would be a  
reasonable behavior of "dgText[pFirstLineContainsHeaders]" il.e.  
when the parameter is true, the column headings are taken from the  
first line of the text field and the rest go into filling the columns.


The first line is only used to tell the data grid which columns to map  
the rest of the data to. If you want to create columns then you will  
need to set the dgProp["columns"] property.


You can't really use multiple parameters when using setProp (which is  
what dgText is). I'm kind of fudging things a bit by treating dgText  
as a custom property set and pFirstLineContainsHeaders as the custom  
property. The truth is we still don't have access to a very expressive  
syntax when creating custom controls (which the Data Grid is one).


--
Trevor DeVore
Blue Mango Learning Systems
ScreenSteps: http://www.screensteps.com
Releasable Revolution Resources for Developers: 
http://revolution.bluemangolearning.com
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Re: Newbie Data Grid question

[James Hurley]

Message: 2
Date: Mon, 14 Dec 2009 13:19:43 -0500
From: Trevor DeVore 
Subject: Re: Newbie Data Grid question
To: How to use Revolution 
Message-ID: <2489afec-40f1-4057-88dd-e8fa53559...@mangomultimedia.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

On Dec 14, 2009, at 1:11 PM, James Hurley wrote:


It is heartening to see something defended by its parent. My sincere
apologies for treating your offspring in such a quick and dirty
fashion :-)


It's okay, the Data Grid likes to be beta up on once and a while :-)


As long as this is still in Beta, may I make a suggestion?
(Does anyone ever let the possibility of the answer be "no" stop them?)
I had assumed when I saw the following code in the guide:

   put field "data" into tData
   put true into pFirstLineContainsHeaders
   set the dgText [ pFirstLineContainsHeaders ] of group "DataGrid 2"  
to tData


I assumed that  the data grid would function in much the same way that  
FileMaker does when importing an Excel file, i.e. it allows one to  
assign the items in the first line of the file to field names and the  
rest of the llines to populate these fields. That would be a  
reasonable behavior of "dgText[pFirstLineContainsHeaders]" il.e. when  
the parameter is true, the column headings are taken from the first  
line of the text field and the rest go into filling the columns.


Or maybe introduce a second parameter to dgText .


Jim Hurley

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Re: Newbie Data Grid question

[stephen barncard]

>
> One bit of confusion for me is that there is no dgText property set visible
> here.  The syntax


probably a setprop handler.

-
Stephen Barncard
San Francisco
http://houseofcubes.com/disco.irev


2009/12/15 Jim Ault 

> One valuable technique for understanding the DataGrid inner workings.
>
> In Rev, choose the pointer tool, click on a data grid, then go the
> inspector, choose 'custom properties' from the drop down,
>
> and now check out the property sets.  You should see dgProps and dgCache
> Note all the properties that have been created when the data grid was
> created.
> Of course you can edit the values here, but you can also change them in
> script lines.
>
> One bit of confusion for me is that there is no dgText property set visible
> here.  The syntax
>
> set the dgText [ true ] of group "DataGrid"  to tHeaders
>
> would logically mean that there would be a custom property set "dgText"
>
> Interesting if you click on dgProps "row template" you will see:
> group id 1011 of card id 1010 of stack "Data Grid Templates 1260751174078"
>
> ...at least in my version of Rev 3.5
>
> Hope this helps in your travels.
>
> Jim Ault
> Las Vegas
>
>
>
>
> On Dec 15, 2009, at 3:18 AM, Andre.Bisseret wrote:
>
>  Bonjour Jim, Trevor and others on this thread ;-)
>>
>> Le 14 déc. 09 à 19:11, James Hurley a écrit :
>> ...
>>
>>>
>>> Trevor (and Andre.Bisseret),
>>>
>>> Thanks you for the very thoughtful reply(s).
>>>
>>> It is heartening to see something defended by its parent. My sincere
>>> apologies for treating your offspring in such a quick and dirty fashion :-)
>>> I'm sure I will appreciate the richness  of this new Run Rev object in
>>> time--see below.
>>>
>>> FIrst to satisfy my quick and dirty needs, I find that the following
>>> works well to get data displayed in a data grid field:
>>>
>>> on mouseUp
>>>  put field "data" into tData --Tab delimited text
>>>  --The first line of tData contains the column names
>>>  put line 1 of tData into tHeaders
>>>  replace tab with cr in tHeaders
>>>  set dgProp["Columns"] of group "DataGrid"  to tHeaders --Thanks to Andre
>>> for this line.
>>>  set the dgText [ true ] of group "DataGrid" to tData
>>> end mouseUp
>>>
>>>  Your handler above, confirmed by Trevoir, helped me a lot to understand
>> the possible uses of pFirstLineContainsHeaders.
>> In order to learn more about data grid, I tried several variations, I put
>> below in case it could interest someone :
>>
>> local tData,tHeaders,
>> -- field "data" = lines of tab delimited text -- a Data Grid "DataGrid"
>> with 3 columns
>> 
>>
>> -- 1 ) IF THE LINE OF HEADERS IS NOT INCLUDED IN THE DATA (AS I AM
>> ACCUSTOMED TO)
>> -- 1.1) WITHOUT USING pFirstLineContainsHeaders; WORKS:
>> on mouseUp
>>  put "header1" & cr & "header2" & cr & "header3" into tHeaders
>>  set the dgProp["columns"] of grp "DataGrid" to tHeaders
>>  put fld "data" into tData
>>  set the dgText of group "DataGrid" to tData
>> end mouseUp
>>
>> -- 1.2) USING pFirstLineContainsHeaders: USELESS BUT WORKS :-)))
>>  on mouseUp
>>  put "header1" & cr & "header2" & cr & "header3" into tHeaders
>>  set the dgProp["columns"] of grp "DataGrid" to tHeaders
>>  put fld "data" into tData
>>  set the dgText[false] of group "DataGrid" to tData
>> end mouseUp
>>
>> -- 2) IF,  FOR SOME REASON, THE LINE OF HEADERS IS INCLUDED IN THE DATA
>> (FIRST LINE)
>> -- 2.1) WITHOUT USING pFirstLineContainsHeaders: WORKS:
>> on mouseUp
>>  put field "data" into tData
>>  put line 1 of tData into tHeaders
>>  replace tab with cr in tHeaders
>>  set dgProp["Columns"] of group "DataGrid"  to tHeaders
>>  delete line 1 of tData
>>  set the dgText of group "DataGrid" to tData
>> end mouseUp
>>
>> -- 2.2) USING  pFirstLineContainsHeaders: WORKS:
>> on mouseUp -- the handler from Jim
>>  put field "data" into tData
>>  put line 1 of tData into tHeaders
>>  replace tab with cr in tHeaders
>>  set dgProp["Columns"] of group "DataGrid"  to tHeaders --Thanks to Andre
>> for this line.
>>  set the dgText [ true ] of group "DataGrid" to tData
>> end mouseUp
>> -
>> --   indeed, in all these handlers, it's possible to directly set the
>> dgText of grp "datagrid" to fld "data" (but less fast, I guess, specially if
>> it contains a lot of lines)
>> --
>> AS FOR THE SYNTAX OF pFirstLineContainsHeaders
>> OK: set the dgText[true]
>> nevertheless:
>> put true into pFirstLineContainsHeaders
>> set the dgText[pFirstLineContainsHeaders] of grp "datagrid" to true
>> works as well, but useless, OK :-)
>>
>> set the pFirstLineContainsHeaders of grp "datagrid" to true does not work
>> as that is creating a custom prop; OK :-))
>>
>> I am a bit slow-witted but I am beginning to understand quite what this
>> pFirstLineContainsHeaders can do ;-o)
>>
>> Thanks to both of you,
>>
>> André
>>
>
>
>
> ___
> use-revolution m

Re: Newbie Data Grid question

[Jim Ault]

One valuable technique for understanding the DataGrid inner workings.

In Rev, choose the pointer tool, click on a data grid, then go the  
inspector, choose 'custom properties' from the drop down,


and now check out the property sets.  You should see dgProps and dgCache
Note all the properties that have been created when the data grid was  
created.
Of course you can edit the values here, but you can also change them  
in script lines.


One bit of confusion for me is that there is no dgText property set  
visible here.  The syntax


set the dgText [ true ] of group "DataGrid"  to tHeaders

would logically mean that there would be a custom property set "dgText"

Interesting if you click on dgProps "row template" you will see:
group id 1011 of card id 1010 of stack "Data Grid Templates  
1260751174078"


...at least in my version of Rev 3.5

Hope this helps in your travels.

Jim Ault
Las Vegas



On Dec 15, 2009, at 3:18 AM, Andre.Bisseret wrote:


Bonjour Jim, Trevor and others on this thread ;-)

Le 14 déc. 09 à 19:11, James Hurley a écrit :
...


Trevor (and Andre.Bisseret),

Thanks you for the very thoughtful reply(s).

It is heartening to see something defended by its parent. My  
sincere apologies for treating your offspring in such a quick and  
dirty fashion :-)
I'm sure I will appreciate the richness  of this new Run Rev object  
in time--see below.


FIrst to satisfy my quick and dirty needs, I find that the  
following works well to get data displayed in a data grid field:


on mouseUp
 put field "data" into tData --Tab delimited text
 --The first line of tData contains the column names
 put line 1 of tData into tHeaders
 replace tab with cr in tHeaders
 set dgProp["Columns"] of group "DataGrid"  to tHeaders --Thanks to  
Andre for this line.

 set the dgText [ true ] of group "DataGrid" to tData
end mouseUp

Your handler above, confirmed by Trevoir, helped me a lot to  
understand the possible uses of pFirstLineContainsHeaders.
In order to learn more about data grid, I tried several variations,  
I put below in case it could interest someone :


local tData,tHeaders,
-- field "data" = lines of tab delimited text -- a Data Grid  
"DataGrid" with 3 columns



-- 1 ) IF THE LINE OF HEADERS IS NOT INCLUDED IN THE DATA (AS I AM  
ACCUSTOMED TO)

-- 1.1) WITHOUT USING pFirstLineContainsHeaders; WORKS:
on mouseUp
  put "header1" & cr & "header2" & cr & "header3" into tHeaders
  set the dgProp["columns"] of grp "DataGrid" to tHeaders
  put fld "data" into tData
  set the dgText of group "DataGrid" to tData
end mouseUp

-- 1.2) USING pFirstLineContainsHeaders: USELESS BUT WORKS :-)))
  on mouseUp
  put "header1" & cr & "header2" & cr & "header3" into tHeaders
  set the dgProp["columns"] of grp "DataGrid" to tHeaders
  put fld "data" into tData
  set the dgText[false] of group "DataGrid" to tData
end mouseUp

-- 2) IF,  FOR SOME REASON, THE LINE OF HEADERS IS INCLUDED IN THE  
DATA (FIRST LINE)

-- 2.1) WITHOUT USING pFirstLineContainsHeaders: WORKS:
on mouseUp
  put field "data" into tData
  put line 1 of tData into tHeaders
  replace tab with cr in tHeaders
  set dgProp["Columns"] of group "DataGrid"  to tHeaders
  delete line 1 of tData
  set the dgText of group "DataGrid" to tData
end mouseUp

-- 2.2) USING  pFirstLineContainsHeaders: WORKS:
on mouseUp -- the handler from Jim
  put field "data" into tData
  put line 1 of tData into tHeaders
  replace tab with cr in tHeaders
  set dgProp["Columns"] of group "DataGrid"  to tHeaders --Thanks to  
Andre for this line.

  set the dgText [ true ] of group "DataGrid" to tData
end mouseUp
-
--   indeed, in all these handlers, it's possible to directly set  
the dgText of grp "datagrid" to fld "data" (but less fast, I guess,  
specially if it contains a lot of lines)

--
AS FOR THE SYNTAX OF pFirstLineContainsHeaders
OK: set the dgText[true]
nevertheless:
put true into pFirstLineContainsHeaders
set the dgText[pFirstLineContainsHeaders] of grp "datagrid" to true
works as well, but useless, OK :-)

set the pFirstLineContainsHeaders of grp "datagrid" to true does not  
work as that is creating a custom prop; OK :-))


I am a bit slow-witted but I am beginning to understand quite what  
this pFirstLineContainsHeaders can do ;-o)


Thanks to both of you,

André




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Re: Newbie Data Grid question

[Andre.Bisseret]

Bonjour Jim, Trevor and others on this thread ;-)

Le 14 déc. 09 à 19:11, James Hurley a écrit :
...


Trevor (and Andre.Bisseret),

Thanks you for the very thoughtful reply(s).

It is heartening to see something defended by its parent. My sincere  
apologies for treating your offspring in such a quick and dirty  
fashion :-)
I'm sure I will appreciate the richness  of this new Run Rev object  
in time--see below.


FIrst to satisfy my quick and dirty needs, I find that the following  
works well to get data displayed in a data grid field:


on mouseUp
  put field "data" into tData --Tab delimited text
  --The first line of tData contains the column names
  put line 1 of tData into tHeaders
  replace tab with cr in tHeaders
  set dgProp["Columns"] of group "DataGrid"  to tHeaders --Thanks to  
Andre for this line.

  set the dgText [ true ] of group "DataGrid" to tData
end mouseUp

Your handler above, confirmed by Trevoir, helped me a lot to  
understand the possible uses of pFirstLineContainsHeaders.
In order to learn more about data grid, I tried several variations, I  
put below in case it could interest someone :


 local tData,tHeaders,
-- field "data" = lines of tab delimited text -- a Data Grid  
"DataGrid" with 3 columns

 

-- 1 ) IF THE LINE OF HEADERS IS NOT INCLUDED IN THE DATA (AS I AM  
ACCUSTOMED TO)

-- 1.1) WITHOUT USING pFirstLineContainsHeaders; WORKS:
on mouseUp
   put "header1" & cr & "header2" & cr & "header3" into tHeaders
   set the dgProp["columns"] of grp "DataGrid" to tHeaders
   put fld "data" into tData
   set the dgText of group "DataGrid" to tData
end mouseUp

-- 1.2) USING pFirstLineContainsHeaders: USELESS BUT WORKS :-)))
   on mouseUp
   put "header1" & cr & "header2" & cr & "header3" into tHeaders
   set the dgProp["columns"] of grp "DataGrid" to tHeaders
   put fld "data" into tData
   set the dgText[false] of group "DataGrid" to tData
end mouseUp

-- 2) IF,  FOR SOME REASON, THE LINE OF HEADERS IS INCLUDED IN THE  
DATA (FIRST LINE)

-- 2.1) WITHOUT USING pFirstLineContainsHeaders: WORKS:
on mouseUp
   put field "data" into tData
   put line 1 of tData into tHeaders
   replace tab with cr in tHeaders
   set dgProp["Columns"] of group "DataGrid"  to tHeaders
   delete line 1 of tData
   set the dgText of group "DataGrid" to tData
end mouseUp

 -- 2.2) USING  pFirstLineContainsHeaders: WORKS:
on mouseUp -- the handler from Jim
   put field "data" into tData
   put line 1 of tData into tHeaders
   replace tab with cr in tHeaders
   set dgProp["Columns"] of group "DataGrid"  to tHeaders --Thanks to  
Andre for this line.

   set the dgText [ true ] of group "DataGrid" to tData
end mouseUp
 -
--   indeed, in all these handlers, it's possible to directly set the  
dgText of grp "datagrid" to fld "data" (but less fast, I guess,  
specially if it contains a lot of lines)

--
 AS FOR THE SYNTAX OF pFirstLineContainsHeaders
OK: set the dgText[true]
nevertheless:
put true into pFirstLineContainsHeaders
set the dgText[pFirstLineContainsHeaders] of grp "datagrid" to true
works as well, but useless, OK :-)

set the pFirstLineContainsHeaders of grp "datagrid" to true does not  
work as that is creating a custom prop; OK :-))


I am a bit slow-witted but I am beginning to understand quite what  
this pFirstLineContainsHeaders can do ;-o)


Thanks to both of you,

André

 
  


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Re: Newbie Data Grid question

[Trevor DeVore]

On Dec 14, 2009, at 1:11 PM, James Hurley wrote:


It is heartening to see something defended by its parent. My sincere  
apologies for treating your offspring in such a quick and dirty  
fashion :-)


It's okay, the Data Grid likes to be beta up on once and a while :-)

The Data Grid is such a big departure from the other controls in  
Revolution that it can be tricky to get your head around it. The,  
shall we say, "less than x-talk" syntax you have to use doesn't help.


FIrst to satisfy my quick and dirty needs, I find that the following  
works well to get data displayed in a data grid field:


on mouseUp
  put field "data" into tData --Tab delimited text
  --The first line of tData contains the column names
  put line 1 of tData into tHeaders
  replace tab with cr in tHeaders
  set dgProp["Columns"] of group "DataGrid"  to tHeaders --Thanks to  
Andre for this line.

  set the dgText [ true ] of group "DataGrid" to tData
end mouseUp


Yes, that is the way to approach it with a Data Grid. I should  
probably add that to a lesson somewhere...


Now to reinforce your point about the richness of this more complex  
object:
In another context, I would like to be able to click on the first  
column header and have it sort the grid by the LAST word of each in  
the first column.
Is it possible to access (and modify)  the script that the column  
headers runs?


Take a look at this lesson:

How Do I Customize or Disable Column Sorting?: 



Thanks again for nursing us through the infancy of data grids.

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Re: Newbie Data Grid question

[James Hurley]

Message: 27
Date: Mon, 14 Dec 2009 08:58:13 -0500
From: Trevor DeVore 
Subject: Re: Newbie Data Grid question
To: How to use Revolution 
Message-ID: <4392d851-15e4-48f7-83fb-d04224a70...@mangomultimedia.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

On Dec 13, 2009, at 4:10 PM, James Hurley wrote:


Yes the columns already exist.

If I set pFirstLineContainsHeaders to false, the field is populated
with data but the columns are set to Col 1, Col 2 etc.

If I then set set pFirstLineContainsHeaders to true (with the
columns already set to Col 1, Col 2, etc.) the columns remain
unchanged but the body of the text is empty.


The most likely cause is that you don't have a column labeled with
"Col 1" or "Col 2" in the first line of the data. Therefore the data
you are setting is not mapping to an existing column in the Data Grid.

Data Grid's do not behave like fields in that you can just swap text
in and out randomly. You should be defining the columns (using the
Property Inspector or by setting the dgData["columns"] property) and
then assigning data to the Data Grid that explicitly states which
column data goes into.

The reason for this is that Data Grid columns are objects in and of
themselves. They have properties that are set independently. If you
want to wipe them all out at once then you first create the columns,
set the column properties and then assign the data.

As a side note the fact that dgText automatically creates columns for
you is unfortunate in my opinion. This behavior was requested so that
someone could just set the text of the Data Grid and see instant
results. While that may be beneficial for "instant gratification" I
think it just causes more confusion then anything in the end.

The Data Grid isn't meant to be a quick and dirty means of displaying
data but rather a means of displaying data with lots of control over
the visual elements used to display that data.

--  
Trevor DeVore

Blue Mango Learning Systems
ScreenSteps: http://www.screensteps.com
Releasable Revolution Resources for Developers: 
http://revolution.bluemangolearning.com


Trevor (and Andre.Bisseret),

Thanks you for the very thoughtful reply(s).

It is heartening to see something defended by its parent. My sincere  
apologies for treating your offspring in such a quick and dirty  
fashion :-)
I'm sure I will appreciate the richness  of this new Run Rev object in  
time--see below.


FIrst to satisfy my quick and dirty needs, I find that the following  
works well to get data displayed in a data grid field:


on mouseUp
   put field "data" into tData --Tab delimited text
   --The first line of tData contains the column names
   put line 1 of tData into tHeaders
   replace tab with cr in tHeaders
   set dgProp["Columns"] of group "DataGrid"  to tHeaders --Thanks to  
Andre for this line.

   set the dgText [ true ] of group "DataGrid" to tData
end mouseUp

Now to reinforce your point about the richness of this more complex  
object:
In another context, I would like to be able to click on the first  
column header and have it sort the grid by the LAST word of each in  
the first column.
Is it possible to access (and modify)  the script that the column  
headers runs?


Thanks again for nursing us through the infancy of data grids.

Jim Hurley








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Re: Newbie Data Grid question

[Trevor DeVore]

On Dec 14, 2009, at 12:03 PM, Andre.Bisseret wrote:


The syntax isn't correct in this example. It should be:

set the dgText[true] of group "Dgrid" to tData


I just tested to verify that using the correct syntax does work -  
and it does :-)



I just tried this syntax but without success!
Here,
---
set the pFirstLineContainsHeaders of grp "Dgrid" to true


pFirstLineContainsHeaders isn't a property in and of itself. It is a  
parameter you pass in when setting the dgText property. Try this:


put true into pFirstLineContainsHeaders
set the dgText[pFirstLineContainsHeaders] of group "Dgrid" to tData

Thanks Trevor for your always helping advices; I keep appreciating  
Data Grid a lot; in a couple of app. I have several ones which are  
running very nicely  :-))


I'm glad you find it useful.

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Blue Mango Learning Systems
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Re: Newbie Data Grid question

[Andre.Bisseret]

Bonjour Trevor,


Le 14 déc. 09 à 15:02, Trevor DeVore a écrit :


On Dec 14, 2009, at 5:11 AM, Andre.Bisseret wrote:
Your are right ; I just made a new stack with a data grid "dGrid"  
and a field "source"

created the columns manually in the inspector (col 1, col 2 etc)
In the field, the first tab delimited line includes the names for  
the columns.


Then

 set the pFirstLineContainsHeaders of grp "dGrid" to true -- or,  
yes,  put true into pFirstLineContainsHeaders as well

 put fld "source" into tData
 set the dgText ["pFirstLineContainsHeaders"] of group "Dgrid" to  
tData


does not work as expected : the columns names keep being "Col 1,  
Col 2 etc"

and the first line of tData keeps being the first line of Dgrid :-((


The syntax isn't correct in this example. It should be:

set the dgText[true] of group "Dgrid" to tData


I just tested to verify that using the correct syntax does work -  
and it does :-)



 I just tried this syntax but without success!
Here,
---
set the pFirstLineContainsHeaders of grp "Dgrid" to true
put fld "source" into tData
set the dgText[pFirstLineContainsHeaders] of group "Dgrid" to tData
 is working
except that I don't get Col 1, Col 2 etc replaced by the first line of  
tData


I get the feeling that I am missing somethins else
In your previous post (answer to Jim) you said :
"The most likely cause is that you don't have a column labeled with  
"Col 1" or "Col 2" in the first line of the data. Therefore the data  
you are setting is not mapping to an existing column in the Data Grid."
Does it mean that the first line of tData should be "Col 1 tab Col 2  
etc"
I tried that, and actually, the data grid is filled in but is keeping  
the generic names (Col 1, Col 2 etc)


But then what about this phrase in the doc :
"… by passing in true for pFirstLineContainsHeaders. If true then the
data grid will extract the first line of pText and use the values for  
the internal key/column names …"


I thought it was meaning that In tData I had to put in the first line,  
the names that I would like instead of Col 1, Col 2 etc.


Up to now, I don"t use pFirstLineContainsHeaders ; I set first the  
dgData["columns"] and dgData["column labels"].
But always happy to better understand about Data Grid (here about how  
this pFirstLineContainsHeaders works; seems I am making a bad  
interpretation of the manual.


Thanks Trevor for your always helping advices; I keep appreciating  
Data Grid a lot; in a couple of app. I have several ones which are  
running very nicely  :-))


Best regards from Grenoble

André








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Re: Newbie Data Grid question

[Trevor DeVore]

On Dec 14, 2009, at 5:11 AM, Andre.Bisseret wrote:
Your are right ; I just made a new stack with a data grid "dGrid"  
and a field "source"

created the columns manually in the inspector (col 1, col 2 etc)
In the field, the first tab delimited line includes the names for  
the columns.


Then

  set the pFirstLineContainsHeaders of grp "dGrid" to true -- or,  
yes,  put true into pFirstLineContainsHeaders as well

  put fld "source" into tData
  set the dgText ["pFirstLineContainsHeaders"] of group "Dgrid" to  
tData


does not work as expected : the columns names keep being "Col 1, Col  
2 etc"

and the first line of tData keeps being the first line of Dgrid :-((


The syntax isn't correct in this example. It should be:

set the dgText[true] of group "Dgrid" to tData

I just tested to verify that using the correct syntax does work - and  
it does :-)


--
Trevor DeVore
Blue Mango Learning Systems
ScreenSteps: http://www.screensteps.com
Releasable Revolution Resources for Developers: 
http://revolution.bluemangolearning.com
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Re: Newbie Data Grid question

[Trevor DeVore]

On Dec 13, 2009, at 4:10 PM, James Hurley wrote:


Yes the columns already exist.

If I set pFirstLineContainsHeaders to false, the field is populated  
with data but the columns are set to Col 1, Col 2 etc.


If I then set set pFirstLineContainsHeaders to true (with the  
columns already set to Col 1, Col 2, etc.) the columns remain  
unchanged but the body of the text is empty.


The most likely cause is that you don't have a column labeled with  
"Col 1" or "Col 2" in the first line of the data. Therefore the data  
you are setting is not mapping to an existing column in the Data Grid.


Data Grid's do not behave like fields in that you can just swap text  
in and out randomly. You should be defining the columns (using the  
Property Inspector or by setting the dgData["columns"] property) and  
then assigning data to the Data Grid that explicitly states which  
column data goes into.


The reason for this is that Data Grid columns are objects in and of  
themselves. They have properties that are set independently. If you  
want to wipe them all out at once then you first create the columns,  
set the column properties and then assign the data.


As a side note the fact that dgText automatically creates columns for  
you is unfortunate in my opinion. This behavior was requested so that  
someone could just set the text of the Data Grid and see instant  
results. While that may be beneficial for "instant gratification" I  
think it just causes more confusion then anything in the end.


The Data Grid isn't meant to be a quick and dirty means of displaying  
data but rather a means of displaying data with lots of control over  
the visual elements used to display that data.


--
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Blue Mango Learning Systems
ScreenSteps: http://www.screensteps.com
Releasable Revolution Resources for Developers: 
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Re: Newbie Data Grid question

[Andre.Bisseret]

Bonjour (again :-) Jim,
Waiting for an answer from Trevor about the mystery of  
"pFirstLineContainsHeaders" ;-))

the following is a possible substitute :

  put "name" & cr & "color" & cr & "shape" into myHeaders
   set the dgProp["columns"] of grp "Dgrid" to myHeaders -- set the  
column names
##or  set the dgProp["column labels"] of group "DGrid" to myHeaders --  
set he column labels

   put fld "source" into tData
   set the dgText of group "Dgrid" to tData

Best regards from Grenoble

André

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Re: Newbie Data Grid question

[Andre.Bisseret]

Le 13 déc. 09 à 22:10, James Hurley a écrit :


Bonjour,


Le 13 déc. 09 à 19:53, James Hurley a écrit :

> I am just getting into data grid fields and can't find first base.
>
> I can't find anything on data grids  in the Dictionary. Is this
> coming?

You could download the manual at :
http://lessons.runrev.com/spaces/lessons/manuals/datagrid/lessons/7309-How-Do-I-Populate-a-Data-Grid-With-Data-
>
> Following the tutorial I tried the following:
>
> put field "data" into tData
> --This is a tab delimited text field with the first line being the
> column names
> put true into pFirstLineContainsHeaders

try set the pFirstLineContainsHeaders to true

> set the dgText [ pFirstLineContainsHeaders ] of group "DataGrid 2"
> to tData
>
> This does nothing.

In the chapter "How do I populate a data grid with Data ?
one found this :
"Note that if pFirstLineContainsHeaders is true then the columns must
already exist in your data grid
table in order to be displayed."
Does your columns already exist ?


Thanks Andre,

Yes the columns already exist.

If I set pFirstLineContainsHeaders to false, the field is populated  
with data but the columns are set to Col 1, Col 2 etc.


If I then set set pFirstLineContainsHeaders to true (with the  
columns already set to Col 1, Col 2, etc.) the columns remain  
unchanged but the body of the text is empty.


I did download the Manual. That is where I got this information  
from. Very perverse.



Jim Hurley


Bonjour Jim,

Your are right ; I just made a new stack with a data grid "dGrid" and  
a field "source"

created the columns manually in the inspector (col 1, col 2 etc)
In the field, the first tab delimited line includes the names for the  
columns.


Then

   set the pFirstLineContainsHeaders of grp "dGrid" to true -- or,  
yes,  put true into pFirstLineContainsHeaders as well

   put fld "source" into tData
   set the dgText ["pFirstLineContainsHeaders"] of group "Dgrid" to  
tData


does not work as expected : the columns names keep being "Col 1, Col 2  
etc"

and the first line of tData keeps being the first line of Dgrid :-((


Did not notice that before, as up to now, I did not use  
"pFirstLineContainsHeaders", I manually create the columns names and  
labels (an habit from the beginning of the dataGrid I guess!!)


Sorry, I don't know what we are missing! Sure Trevor will help  
soon ;-)))


Best regards from Grenoble
André














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Re: Newbie Data Grid question

[James Hurley]

Bonjour,


Le 13 déc. 09 à 19:53, James Hurley a écrit :

> I am just getting into data grid fields and can't find first base.
>
> I can't find anything on data grids  in the Dictionary. Is this
> coming?

You could download the manual at :
http://lessons.runrev.com/spaces/lessons/manuals/datagrid/lessons/7309-How-Do-I-Populate-a-Data-Grid-With-Data-
>
> Following the tutorial I tried the following:
>
> put field "data" into tData
> --This is a tab delimited text field with the first line being the
> column names
> put true into pFirstLineContainsHeaders

try set the pFirstLineContainsHeaders to true

> set the dgText [ pFirstLineContainsHeaders ] of group "DataGrid 2"
> to tData
>
> This does nothing.

In the chapter "How do I populate a data grid with Data ?
one found this :
"Note that if pFirstLineContainsHeaders is true then the columns must
already exist in your data grid
table in order to be displayed."
Does your columns already exist ?


Thanks Andre,

Yes the columns already exist.

If I set pFirstLineContainsHeaders to false, the field is populated  
with data but the columns are set to Col 1, Col 2 etc.


If I then set set pFirstLineContainsHeaders to true (with the columns  
already set to Col 1, Col 2, etc.) the columns remain unchanged but  
the body of the text is empty.


I did download the Manual. That is where I got this information from.  
Very perverse.



Jim Hurley



>
> But if I put False into pFirstLineContainsHeaders the field is
> filled with tData but the columns are Col 1, Col 2, etc.
>
> What am I missing?
>
HTH

Best regards from Grenoble

André

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Re: Newbie Data Grid question

[Andre.Bisseret]

Bonjour,


Le 13 déc. 09 à 19:53, James Hurley a écrit :


I am just getting into data grid fields and can't find first base.

I can't find anything on data grids  in the Dictionary. Is this  
coming?


You could download the manual at :
http://lessons.runrev.com/spaces/lessons/manuals/datagrid/lessons/7309-How-Do-I-Populate-a-Data-Grid-With-Data-


Following the tutorial I tried the following:

put field "data" into tData
--This is a tab delimited text field with the first line being the  
column names

put true into pFirstLineContainsHeaders


try set the pFirstLineContainsHeaders to true

set the dgText [ pFirstLineContainsHeaders ] of group "DataGrid 2"  
to tData


This does nothing.


In the chapter "How do I populate a data grid with Data ?
one found this :
"Note that if pFirstLineContainsHeaders is true then the columns must  
already exist in your data grid

table in order to be displayed."
Does your columns already exist ?


But if I put False into pFirstLineContainsHeaders the field is  
filled with tData but the columns are Col 1, Col 2, etc.


What am I missing?


HTH

Best regards from Grenoble

André

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Re: Newbie Data Grid question

[william humphrey]

I noticed that the column headings aren't automatically set when you load
the datagrid with data. I manually set the column names and then when I
loaded the data in (using a different method with ) I put in the column
headings exactly as I had manually named them. It turned out that later,
when taking data out of the datagrid, I did it using those column headings.

I was surprised that when you load the data grid it doesn't change the
column headings. But it works perfectly otherwise.

On Sun, Dec 13, 2009 at 2:53 PM, James Hurley wrote:

> I am just getting into data grid fields and can't find first base.
>
> I can't find anything on data grids  in the Dictionary. Is this coming?
>
> Following the tutorial I tried the following:
>
> put field "data" into tData
> --This is a tab delimited text field with the first line being the column
> names
>  put true into pFirstLineContainsHeaders
>  set the dgText [ pFirstLineContainsHeaders ] of group "DataGrid 2" to
> tData
>
> This does nothing.
>
> But if I put False into pFirstLineContainsHeaders the field is filled with
> tData but the columns are Col 1, Col 2, etc.
>
> What am I missing?
>
>
> Jim Hurley
> ___
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> subscription preferences:
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Newbie Data Grid question

[James Hurley]

I am just getting into data grid fields and can't find first base.

I can't find anything on data grids  in the Dictionary. Is this coming?

Following the tutorial I tried the following:

put field "data" into tData
--This is a tab delimited text field with the first line being the  
column names

 put true into pFirstLineContainsHeaders
 set the dgText [ pFirstLineContainsHeaders ] of group "DataGrid 2"  
to tData


This does nothing.

But if I put False into pFirstLineContainsHeaders the field is filled  
with tData but the columns are Col 1, Col 2, etc.


What am I missing?


Jim Hurley
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Re: Data Grid Question

[Trevor DeVore]

On Nov 21, 2009, at 5:09 AM, Jan Schenkel wrote:

The parameter sent to FillInData, pData, is an array with one  
element for each column name. So assuming your second column is  
named "Foobar", then your FillInData handler would look something  
like:

##
on FillInData pData
 set the text of field 1 of me to TimeOnLine(pData["Foobar"])
end FillInData
##


Stewart and Jan,

FillInData gets an array when working with Data Grid forms but not  
tables. For tables it is just the column value.


You can get other column values using GetDataOfIndex however. Inside  
of FillInData you would call it like this:


put GetDataOfIndex(the dgIndex of me, "Foobar") into theValue




--
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Blue Mango Learning Systems
ScreenSteps: http://www.screensteps.com
Releasable Revolution Resources for Developers: 
http://revolution.bluemangolearning.com
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Re: Data Grid Question

[Jan Schenkel]

--- On Fri, 11/20/09, RevList  wrote:
> I have to admit that I do not use the
> Data Grid often enough to be
> comfortable with it, and I have problems finding how to do
> things.
> 
> I have a simple 3 column table style datagrid and I
> populate the first two
> columns though a SQLite database.  No problem.  I
> would like to run a
> calculation on the second cell in each row and populate the
> third cell
> with this calculated result.
> I have a function called TimeOnLine that returns the
> calculated result.
> 
> I have added a third column to my datagrid an am looking at
> the FilInData
> scipt for the column behaviour.  I do not know the
> syntax to retrieve the
> value of the second cell so that I can call my function.
> Can anyone help?
> 
> on FillInData pData
>    -- This message is sent when the Data
> Grid needs to populate
>    -- this template with the column data.
> pData is the value to be
> displayed.
>    
>    -- Example:
>    set the text of field 1 of me to
> TimeOnLine(?)
> end FillInData
> 
> 
> Stewart
> 

Hi Stewart,

The parameter sent to FillInData, pData, is an array with one element for each 
column name. So assuming your second column is named "Foobar", then your 
FillInData handler would look something like:
##
on FillInData pData
  set the text of field 1 of me to TimeOnLine(pData["Foobar"])
end FillInData
##

It's one of the most powerful aspects of datagrids, that we can do this 
ourselves via straightforward scripting, without having to deal with the 
complexity of the underlying mechanism.

HTH,

Jan Schenkel
=
Quartam Reports & PDF Library for Revolution


=
"As we grow older, we grow both wiser and more foolish at the same time."  (La 
Rochefoucauld)



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Data Grid Question

[RevList]

I have to admit that I do not use the Data Grid often enough to be
comfortable with it, and I have problems finding how to do things.

I have a simple 3 column table style datagrid and I populate the first two
columns though a SQLite database.  No problem.  I would like to run a
calculation on the second cell in each row and populate the third cell
with this calculated result.
I have a function called TimeOnLine that returns the calculated result.

I have added a third column to my datagrid an am looking at the FilInData
scipt for the column behaviour.  I do not know the syntax to retrieve the
value of the second cell so that I can call my function.
Can anyone help?

on FillInData pData
   -- This message is sent when the Data Grid needs to populate
   -- this template with the column data. pData is the value to be
displayed.
   
   -- Example:
   set the text of field 1 of me to TimeOnLine(?)
end FillInData


Stewart


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Re: data grid question

[Sarah Reichelt]

On Fri, Jul 3, 2009 at 9:26 AM, Paul Gabel wrote:
> Is there a Mac-compatible link? The .wmv link got me a bunch of TextEdit
> garbage. Thanks.
>
> On Jun 23, 2009, at 8:23 AM, Bernard Devlin wrote:
>
>> forgot the link:
>>
>> http://www.runrev.com/offers/webinar-2009-03-26/data-grid-webinar.wmv
>


If you install the free Flip4Mac WMV player, you will be able to play
these wmv files on your Mac.


Cheers,
Sarah
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Re: data grid question

[Paul Gabel]

Is there a Mac-compatible link? The .wmv link got me a bunch of  
TextEdit garbage. Thanks.


On Jun 23, 2009, at 8:23 AM, Bernard Devlin wrote:


forgot the link:

http://www.runrev.com/offers/webinar-2009-03-26/data-grid-webinar.wmv


Paul Gabel
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Re: data grid question

[Trevor DeVore]

On Jun 23, 2009, at 11:23 AM, Bernard Devlin wrote:


forgot the link:

http://www.runrev.com/offers/webinar-2009-03-26/data-grid-webinar.wmv


Thanks for posting that Bernard. The link to this webinar, as well as  
links to additional materials are available in the sidebar of the  
manual:





Regards,

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Blue Mango Learning Systems
www.bluemangolearning.com-www.screensteps.com
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Re: data grid question

[Bernard Devlin]

forgot the link:

http://www.runrev.com/offers/webinar-2009-03-26/data-grid-webinar.wmv

On Tue, Jun 23, 2009 at 4:23 PM, Bernard Devlin wrote:
> Here it is Joe.  I think it is the best explanation of what the DG
> provides.  In fact, if you're not particularly wanting to use a DG in
> an application, I wouldn't concentrate too hard on the details in the
> webinar.  Just watch what can be achieved through using the DG.
>
> Bernard
>
> On Tue, Jun 23, 2009 at 3:17 PM, Joe Lewis Wilkins wrote:
>> Hi Bernard,
>>
>> Though I appreciate everything you said, having NOT watched the first
>> webinar for a number of reasons as I recall, it would still be a great help
>> to know the foundation upon which DG works. I found in my earliest years
>> studying mathematically subjective subjects that, rather that memorize a
>> whole bunch of formulas, I could derive those formulas on an as need basis
>> once I understood the relevant process. So I guess I'm asking: "Has anyone
>> described the DG process in sufficient detail so that, had we the need to do
>> so, we could recreate DG for ourselves?" IOW, how does it work, OR how is it
>> expected to work in case it doesn't?
>>
>> Also, once we are so empowered, we would be able to expand DG for our own
>> special needs, freeing Trevor from the need to "mother-hen" his creation,
>> something I'm assuming we have the power to do.
>>
>> Perhaps I'm asking too much.
>>
>> Incidentally, now that I think about it, I did not watch the Webinar mostly
>> because I've found them to be a bit too fast paced, lacking the provision
>> for adequate reflection, in most instances. (referring to OTHER Webinars I
>> have watched. Is it, BTW, still "around" for viewing and is/are there an
>> additional Webinar(s) on DG? Unlike the majority of those who follow this
>> list, Revolution is NOT a source of income that sustains my existence.
>>
>> Thanks to all who participate on this list.
>>
>> Joe Wilkins
>>
>> On Jun 23, 2009, at 1:41 AM, Bernard Devlin wrote:
>>
>>> Hi Joe,
>>>
>>> Did you watch the first webinar on the DataGrid?  I think that is by
>>> far the easiest way to grasp why the DataGrid is useful.  Basically,
>>> the DataGrid serves to style the presentation of rows of complex data.
>>> One's options for doing this in Rev go (in increasing power and
>>> complexity) field, table field, ListMagic, DataGrid.
>>>
>>> The great thing about all these questions on the DG is that a) they
>>> have given Trevor ideas how to expand it further, b) they've found a
>>> few bugs, c) they will provide lots of additional information for you
>>> if/when you ever decide you too need to use a DG in your code.
>>>
>>> Bernard
>>>
>>> On Tue, Jun 23, 2009 at 4:41 AM, Joe Lewis Wilkins wrote:

 I've not even considered using the datagrid control, but I've noticed an
 awful lot of traffic regarding it on this list.

 Since, once I understand how something really works, I've wondered if a
 description of the concept behind datagrid has been provided. Probably a
 real stupid question, but we have some pretty bright people on this list.
 It
 seems to me that most of these threads would most likely be unnecessary
 if
 there is one; or like many other things with revolution, this description
 is
 too well hidden, not readily obvious to the first time user of the
 datagrid
 control. Please forgive me if I'm wy off base with this.

 Joe Wilkins
>>
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>
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Re: data grid question

[Bernard Devlin]

Here it is Joe.  I think it is the best explanation of what the DG
provides.  In fact, if you're not particularly wanting to use a DG in
an application, I wouldn't concentrate too hard on the details in the
webinar.  Just watch what can be achieved through using the DG.

Bernard

On Tue, Jun 23, 2009 at 3:17 PM, Joe Lewis Wilkins wrote:
> Hi Bernard,
>
> Though I appreciate everything you said, having NOT watched the first
> webinar for a number of reasons as I recall, it would still be a great help
> to know the foundation upon which DG works. I found in my earliest years
> studying mathematically subjective subjects that, rather that memorize a
> whole bunch of formulas, I could derive those formulas on an as need basis
> once I understood the relevant process. So I guess I'm asking: "Has anyone
> described the DG process in sufficient detail so that, had we the need to do
> so, we could recreate DG for ourselves?" IOW, how does it work, OR how is it
> expected to work in case it doesn't?
>
> Also, once we are so empowered, we would be able to expand DG for our own
> special needs, freeing Trevor from the need to "mother-hen" his creation,
> something I'm assuming we have the power to do.
>
> Perhaps I'm asking too much.
>
> Incidentally, now that I think about it, I did not watch the Webinar mostly
> because I've found them to be a bit too fast paced, lacking the provision
> for adequate reflection, in most instances. (referring to OTHER Webinars I
> have watched. Is it, BTW, still "around" for viewing and is/are there an
> additional Webinar(s) on DG? Unlike the majority of those who follow this
> list, Revolution is NOT a source of income that sustains my existence.
>
> Thanks to all who participate on this list.
>
> Joe Wilkins
>
> On Jun 23, 2009, at 1:41 AM, Bernard Devlin wrote:
>
>> Hi Joe,
>>
>> Did you watch the first webinar on the DataGrid?  I think that is by
>> far the easiest way to grasp why the DataGrid is useful.  Basically,
>> the DataGrid serves to style the presentation of rows of complex data.
>> One's options for doing this in Rev go (in increasing power and
>> complexity) field, table field, ListMagic, DataGrid.
>>
>> The great thing about all these questions on the DG is that a) they
>> have given Trevor ideas how to expand it further, b) they've found a
>> few bugs, c) they will provide lots of additional information for you
>> if/when you ever decide you too need to use a DG in your code.
>>
>> Bernard
>>
>> On Tue, Jun 23, 2009 at 4:41 AM, Joe Lewis Wilkins wrote:
>>>
>>> I've not even considered using the datagrid control, but I've noticed an
>>> awful lot of traffic regarding it on this list.
>>>
>>> Since, once I understand how something really works, I've wondered if a
>>> description of the concept behind datagrid has been provided. Probably a
>>> real stupid question, but we have some pretty bright people on this list.
>>> It
>>> seems to me that most of these threads would most likely be unnecessary
>>> if
>>> there is one; or like many other things with revolution, this description
>>> is
>>> too well hidden, not readily obvious to the first time user of the
>>> datagrid
>>> control. Please forgive me if I'm wy off base with this.
>>>
>>> Joe Wilkins
>
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Re: data grid question

[Joe Lewis Wilkins]

Hi Bernard,

Though I appreciate everything you said, having NOT watched the first  
webinar for a number of reasons as I recall, it would still be a great  
help to know the foundation upon which DG works. I found in my  
earliest years studying mathematically subjective subjects that,  
rather that memorize a whole bunch of formulas, I could derive those  
formulas on an as need basis once I understood the relevant process.  
So I guess I'm asking: "Has anyone described the DG process in  
sufficient detail so that, had we the need to do so, we could recreate  
DG for ourselves?" IOW, how does it work, OR how is it expected to  
work in case it doesn't?


Also, once we are so empowered, we would be able to expand DG for our  
own special needs, freeing Trevor from the need to "mother-hen" his  
creation, something I'm assuming we have the power to do.


Perhaps I'm asking too much.

Incidentally, now that I think about it, I did not watch the Webinar  
mostly because I've found them to be a bit too fast paced, lacking the  
provision for adequate reflection, in most instances. (referring to  
OTHER Webinars I have watched. Is it, BTW, still "around" for viewing  
and is/are there an additional Webinar(s) on DG? Unlike the majority  
of those who follow this list, Revolution is NOT a source of income  
that sustains my existence.


Thanks to all who participate on this list.

Joe Wilkins

On Jun 23, 2009, at 1:41 AM, Bernard Devlin wrote:


Hi Joe,

Did you watch the first webinar on the DataGrid?  I think that is by
far the easiest way to grasp why the DataGrid is useful.  Basically,
the DataGrid serves to style the presentation of rows of complex data.
One's options for doing this in Rev go (in increasing power and
complexity) field, table field, ListMagic, DataGrid.

The great thing about all these questions on the DG is that a) they
have given Trevor ideas how to expand it further, b) they've found a
few bugs, c) they will provide lots of additional information for you
if/when you ever decide you too need to use a DG in your code.

Bernard

On Tue, Jun 23, 2009 at 4:41 AM, Joe Lewis Wilkins  
wrote:
I've not even considered using the datagrid control, but I've  
noticed an

awful lot of traffic regarding it on this list.

Since, once I understand how something really works, I've wondered  
if a
description of the concept behind datagrid has been provided.  
Probably a
real stupid question, but we have some pretty bright people on this  
list. It
seems to me that most of these threads would most likely be  
unnecessary if
there is one; or like many other things with revolution, this  
description is
too well hidden, not readily obvious to the first time user of the  
datagrid

control. Please forgive me if I'm wy off base with this.

Joe Wilkins


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Re: data grid question

[Bernard Devlin]

Hi Joe,

Did you watch the first webinar on the DataGrid?  I think that is by
far the easiest way to grasp why the DataGrid is useful.  Basically,
the DataGrid serves to style the presentation of rows of complex data.
 One's options for doing this in Rev go (in increasing power and
complexity) field, table field, ListMagic, DataGrid.

The great thing about all these questions on the DG is that a) they
have given Trevor ideas how to expand it further, b) they've found a
few bugs, c) they will provide lots of additional information for you
if/when you ever decide you too need to use a DG in your code.

Bernard

On Tue, Jun 23, 2009 at 4:41 AM, Joe Lewis Wilkins wrote:
> I've not even considered using the datagrid control, but I've noticed an
> awful lot of traffic regarding it on this list.
>
> Since, once I understand how something really works, I've wondered if a
> description of the concept behind datagrid has been provided. Probably a
> real stupid question, but we have some pretty bright people on this list. It
> seems to me that most of these threads would most likely be unnecessary if
> there is one; or like many other things with revolution, this description is
> too well hidden, not readily obvious to the first time user of the datagrid
> control. Please forgive me if I'm wy off base with this.
>
> Joe Wilkins
> ___
> use-revolution mailing list
> use-revolution@lists.runrev.com
> Please visit this url to subscribe, unsubscribe and manage your subscription
> preferences:
> http://lists.runrev.com/mailman/listinfo/use-revolution
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data grid question

[Joe Lewis Wilkins]

I've not even considered using the datagrid control, but I've noticed  
an awful lot of traffic regarding it on this list.


Since, once I understand how something really works, I've wondered if  
a description of the concept behind datagrid has been provided.  
Probably a real stupid question, but we have some pretty bright people  
on this list. It seems to me that most of these threads would most  
likely be unnecessary if there is one; or like many other things with  
revolution, this description is too well hidden, not readily obvious  
to the first time user of the datagrid control. Please forgive me if  
I'm wy off base with this.


Joe Wilkins
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Web Data Grid question

[Rick Harrison]

Hi,

Does anyone know if I can deploy the Rev Data Grid
on the web, and if the behavior is similar to the way
Java script pops up mouse hovering button changes
without reloading the webpage?

Thanks in advance!

Rick

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