Re: [web2py] how to implement database tables with one level of indirection?
That type of method will work, but it will result in a new database table
being created for each event/custom profile. There are various alternatives
for implementing user defined fields -- here are some Stackoverflow links:
http://stackoverflow.com/questions/5106335/how-to-design-a-database-for-user-defined-fields
http://stackoverflow.com/questions/4151468/how-to-store-custom-user-fields-in-database
http://stackoverflow.com/questions/2924027/db-design-to-store-custom-fields-for-a-table
Anthony
On Monday, July 4, 2011 9:19:00 PM UTC-4, rochacbruno wrote:
> The web2py app wizard has a Dynamic model creator, may be you can take a
> look in to the wizard code. And fork as a plugin.
>
> On Mon, Jul 4, 2011 at 9:38 PM, Richard Vézina wrote:
>
>> It surely a missing feature...
>>
>> Richard
>>
>>
>> On Mon, Jul 4, 2011 at 8:30 PM, Luis Goncalves
>> wrote:
>>
>>> Thanks for the links!!
>>>
>>> Django dynamic formsets seems powerful! When I first started off, I
>>> investigated using django, but found it very difficult. Web2py is so much
>>> easier to use (especially with the clear manual, and "one click" install
>>> with working apps ('Welcome'))!!!
>>>
>>> Maybe I'll end up contributing a friendly dynamic form creator for web2py
>>> ...
>>>
>>> merci,
>>> Luis.
>>>
>>>
>>> On Mon, Jul 4, 2011 at 4:54 PM, Richard Vézina wrote:
>>>
Maybe you could find some inspiration from this project for Django :
http://code.google.com/p/django-dynamic-formset/
You need to install Django to test it...
What you seems to do is adding an arbitrary number of input for a given
field...
Following good database design pratice you will normalise your schema...
I had try to find a solution similar to django dynamic formset, but I give
up in the pass.
You have this thread that could maybe bring some answer :
http://groups.google.com/group/web2py/browse_thread/thread/50af0d67554c94d9/ad553c6a5514ecc7?pli=1
Web2py let you do this :
http://www.web2py.com/book/default/chapter/07?search=filter#One-form-for-multiple-tables
But you can't have fields with the same name in your table...
Finally it maybe possible with component now to load a arbitrary number
of fields inputs for a given table and with jQuery submit the differents
forms as one I would investigate in that direction too...
Good luck
Richard
On Mon, Jul 4, 2011 at 7:17 PM, Luis Goncalves wrote:
> Hello Richard!
>
> I looked at this, but wasn't sure how it could help -- what I need is a
> way for a (non-technical) admin to create profile forms with arbitrary
> fields (through a friendly web interface), and then users to be able to
> view
> and edit their (run-time reconfigurable) profiles.
>
> At any rate, the method I described above seems to work quite well,
> thanks to web2py's versatility, allowing me to define forms
> programmatically
> (excerpt below).
>
> I was wondering if there was a more clever/efficient/proper way to do
> so. Perhaps not!
>
> Thanks!!
> Luis.
>
> for field in event_fields:
> # see if person has a pre-defined value
> found = False
> for my_efield in me.event_field:
> if my_efield.display_title == field.display_title:
> found = True
> break
>
> if found:
> if field.data_type == 'string':
> new_input = INPUT(_type = field.data_type, _name =
> field.id, requires=IS_NOT_EMPTY(), _value=my_efield.data )
> form[0].insert(-2, TR(field.display_title+':',
> new_input ))
>
> elif field.data_type == 'text':
> .
> else:
> if field.data_type == 'string':
> new_input = INPUT(_type = field.data_type, _name =
> field.id, requires=IS_NOT_EMPTY())
> form[0].insert(-2, TR(field.display_title+':',
> new_input ))
>
> elif field.data_type == 'text':
>
>
>
>
>>>
>>
>
>
> --
>
>
>
> --
> Bruno Rocha
> [ About me: http://zerp.ly/rochacbruno ]
> [ Aprenda a programar: http://CursoDePython.com.br ]
> [ O seu aliado nos cuidados com os animais: http://AnimalSystem.com.br ]
> [ Consultoria em desenvolvimento web: http://www.blouweb.com ]
>
>
Re: [web2py] how to implement database tables with one level of indirection?
I thougth about it too, but I didn't find the thread...
;-)
Richard
On Mon, Jul 4, 2011 at 9:19 PM, Bruno Rocha wrote:
> The web2py app wizard has a Dynamic model creator, may be you can take a
> look in to the wizard code. And fork as a plugin.
>
>
> On Mon, Jul 4, 2011 at 9:38 PM, Richard Vézina <
> ml.richard.vez...@gmail.com> wrote:
>
>> It surely a missing feature...
>>
>> Richard
>>
>>
>> On Mon, Jul 4, 2011 at 8:30 PM, Luis Goncalves
>> wrote:
>>
>>> Thanks for the links!!
>>>
>>> Django dynamic formsets seems powerful! When I first started off, I
>>> investigated using django, but found it very difficult. Web2py is so much
>>> easier to use (especially with the clear manual, and "one click" install
>>> with working apps ('Welcome'))!!!
>>>
>>> Maybe I'll end up contributing a friendly dynamic form creator for web2py
>>> ...
>>>
>>> merci,
>>> Luis.
>>>
>>>
>>> On Mon, Jul 4, 2011 at 4:54 PM, Richard Vézina <
>>> ml.richard.vez...@gmail.com> wrote:
>>>
Maybe you could find some inspiration from this project for Django :
http://code.google.com/p/django-dynamic-formset/
You need to install Django to test it...
What you seems to do is adding an arbitrary number of input for a given
field...
Following good database design pratice you will normalise your schema...
I had try to find a solution similar to django dynamic formset, but I give
up in the pass.
You have this thread that could maybe bring some answer :
http://groups.google.com/group/web2py/browse_thread/thread/50af0d67554c94d9/ad553c6a5514ecc7?pli=1
Web2py let you do this :
http://www.web2py.com/book/default/chapter/07?search=filter#One-form-for-multiple-tables
But you can't have fields with the same name in your table...
Finally it maybe possible with component now to load a arbitrary number
of fields inputs for a given table and with jQuery submit the differents
forms as one I would investigate in that direction too...
Good luck
Richard
On Mon, Jul 4, 2011 at 7:17 PM, Luis Goncalves wrote:
> Hello Richard!
>
> I looked at this, but wasn't sure how it could help -- what I need is a
> way for a (non-technical) admin to create profile forms with arbitrary
> fields (through a friendly web interface), and then users to be able to
> view
> and edit their (run-time reconfigurable) profiles.
>
> At any rate, the method I described above seems to work quite well,
> thanks to web2py's versatility, allowing me to define forms
> programmatically
> (excerpt below).
>
> I was wondering if there was a more clever/efficient/proper way to do
> so. Perhaps not!
>
> Thanks!!
> Luis.
>
> for field in event_fields:
> # see if person has a pre-defined value
> found = False
> for my_efield in me.event_field:
> if my_efield.display_title == field.display_title:
> found = True
> break
>
> if found:
> if field.data_type == 'string':
> new_input = INPUT(_type = field.data_type, _name =
> field.id, requires=IS_NOT_EMPTY(), _value=my_efield.data )
> form[0].insert(-2, TR(field.display_title+':',
> new_input ))
>
> elif field.data_type == 'text':
> .
> else:
> if field.data_type == 'string':
> new_input = INPUT(_type = field.data_type, _name =
> field.id, requires=IS_NOT_EMPTY())
> form[0].insert(-2, TR(field.display_title+':',
> new_input ))
>
> elif field.data_type == 'text':
>
>
>
>
>>>
>>
>
>
> --
>
>
>
> --
> Bruno Rocha
> [ About me: http://zerp.ly/rochacbruno ]
> [ Aprenda a programar: http://CursoDePython.com.br ]
> [ O seu aliado nos cuidados com os animais: http://AnimalSystem.com.br ]
> [ Consultoria em desenvolvimento web: http://www.blouweb.com ]
>
>
Re: [web2py] how to implement database tables with one level of indirection?
The web2py app wizard has a Dynamic model creator, may be you can take a
look in to the wizard code. And fork as a plugin.
On Mon, Jul 4, 2011 at 9:38 PM, Richard Vézina
wrote:
> It surely a missing feature...
>
> Richard
>
>
> On Mon, Jul 4, 2011 at 8:30 PM, Luis Goncalves wrote:
>
>> Thanks for the links!!
>>
>> Django dynamic formsets seems powerful! When I first started off, I
>> investigated using django, but found it very difficult. Web2py is so much
>> easier to use (especially with the clear manual, and "one click" install
>> with working apps ('Welcome'))!!!
>>
>> Maybe I'll end up contributing a friendly dynamic form creator for web2py
>> ...
>>
>> merci,
>> Luis.
>>
>>
>> On Mon, Jul 4, 2011 at 4:54 PM, Richard Vézina <
>> ml.richard.vez...@gmail.com> wrote:
>>
>>> Maybe you could find some inspiration from this project for Django :
>>>
>>> http://code.google.com/p/django-dynamic-formset/
>>>
>>> You need to install Django to test it...
>>>
>>> What you seems to do is adding an arbitrary number of input for a given
>>> field...
>>>
>>> Following good database design pratice you will normalise your schema...
>>> I had try to find a solution similar to django dynamic formset, but I give
>>> up in the pass.
>>>
>>> You have this thread that could maybe bring some answer :
>>> http://groups.google.com/group/web2py/browse_thread/thread/50af0d67554c94d9/ad553c6a5514ecc7?pli=1
>>>
>>> Web2py let you do this :
>>> http://www.web2py.com/book/default/chapter/07?search=filter#One-form-for-multiple-tables
>>>
>>> But you can't have fields with the same name in your table...
>>>
>>> Finally it maybe possible with component now to load a arbitrary number
>>> of fields inputs for a given table and with jQuery submit the differents
>>> forms as one I would investigate in that direction too...
>>>
>>> Good luck
>>>
>>> Richard
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Mon, Jul 4, 2011 at 7:17 PM, Luis Goncalves wrote:
>>>
Hello Richard!
I looked at this, but wasn't sure how it could help -- what I need is a
way for a (non-technical) admin to create profile forms with arbitrary
fields (through a friendly web interface), and then users to be able to
view
and edit their (run-time reconfigurable) profiles.
At any rate, the method I described above seems to work quite well,
thanks to web2py's versatility, allowing me to define forms
programmatically
(excerpt below).
I was wondering if there was a more clever/efficient/proper way to do
so. Perhaps not!
Thanks!!
Luis.
for field in event_fields:
# see if person has a pre-defined value
found = False
for my_efield in me.event_field:
if my_efield.display_title == field.display_title:
found = True
break
if found:
if field.data_type == 'string':
new_input = INPUT(_type = field.data_type, _name =
field.id, requires=IS_NOT_EMPTY(), _value=my_efield.data )
form[0].insert(-2, TR(field.display_title+':',
new_input ))
elif field.data_type == 'text':
.
else:
if field.data_type == 'string':
new_input = INPUT(_type = field.data_type, _name =
field.id, requires=IS_NOT_EMPTY())
form[0].insert(-2, TR(field.display_title+':',
new_input ))
elif field.data_type == 'text':
>>>
>>
>
--
--
Bruno Rocha
[ About me: http://zerp.ly/rochacbruno ]
[ Aprenda a programar: http://CursoDePython.com.br ]
[ O seu aliado nos cuidados com os animais: http://AnimalSystem.com.br ]
[ Consultoria em desenvolvimento web: http://www.blouweb.com ]
Re: [web2py] how to implement database tables with one level of indirection?
It surely a missing feature...
Richard
On Mon, Jul 4, 2011 at 8:30 PM, Luis Goncalves wrote:
> Thanks for the links!!
>
> Django dynamic formsets seems powerful! When I first started off, I
> investigated using django, but found it very difficult. Web2py is so much
> easier to use (especially with the clear manual, and "one click" install
> with working apps ('Welcome'))!!!
>
> Maybe I'll end up contributing a friendly dynamic form creator for web2py
> ...
>
> merci,
> Luis.
>
>
> On Mon, Jul 4, 2011 at 4:54 PM, Richard Vézina <
> ml.richard.vez...@gmail.com> wrote:
>
>> Maybe you could find some inspiration from this project for Django :
>>
>> http://code.google.com/p/django-dynamic-formset/
>>
>> You need to install Django to test it...
>>
>> What you seems to do is adding an arbitrary number of input for a given
>> field...
>>
>> Following good database design pratice you will normalise your schema... I
>> had try to find a solution similar to django dynamic formset, but I give up
>> in the pass.
>>
>> You have this thread that could maybe bring some answer :
>> http://groups.google.com/group/web2py/browse_thread/thread/50af0d67554c94d9/ad553c6a5514ecc7?pli=1
>>
>> Web2py let you do this :
>> http://www.web2py.com/book/default/chapter/07?search=filter#One-form-for-multiple-tables
>>
>> But you can't have fields with the same name in your table...
>>
>> Finally it maybe possible with component now to load a arbitrary number of
>> fields inputs for a given table and with jQuery submit the differents forms
>> as one I would investigate in that direction too...
>>
>> Good luck
>>
>> Richard
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Mon, Jul 4, 2011 at 7:17 PM, Luis Goncalves wrote:
>>
>>> Hello Richard!
>>>
>>> I looked at this, but wasn't sure how it could help -- what I need is a
>>> way for a (non-technical) admin to create profile forms with arbitrary
>>> fields (through a friendly web interface), and then users to be able to view
>>> and edit their (run-time reconfigurable) profiles.
>>>
>>> At any rate, the method I described above seems to work quite well,
>>> thanks to web2py's versatility, allowing me to define forms programmatically
>>> (excerpt below).
>>>
>>> I was wondering if there was a more clever/efficient/proper way to do so.
>>> Perhaps not!
>>>
>>> Thanks!!
>>> Luis.
>>>
>>> for field in event_fields:
>>> # see if person has a pre-defined value
>>> found = False
>>> for my_efield in me.event_field:
>>> if my_efield.display_title == field.display_title:
>>> found = True
>>> break
>>>
>>> if found:
>>> if field.data_type == 'string':
>>> new_input = INPUT(_type = field.data_type, _name =
>>> field.id, requires=IS_NOT_EMPTY(), _value=my_efield.data )
>>> form[0].insert(-2, TR(field.display_title+':',
>>> new_input ))
>>>
>>> elif field.data_type == 'text':
>>> .
>>> else:
>>> if field.data_type == 'string':
>>> new_input = INPUT(_type = field.data_type, _name =
>>> field.id, requires=IS_NOT_EMPTY())
>>> form[0].insert(-2, TR(field.display_title+':',
>>> new_input ))
>>>
>>> elif field.data_type == 'text':
>>>
>>>
>>>
>>>
>>
>
Re: [web2py] how to implement database tables with one level of indirection?
Thanks for the links!!
Django dynamic formsets seems powerful! When I first started off, I
investigated using django, but found it very difficult. Web2py is so much
easier to use (especially with the clear manual, and "one click" install
with working apps ('Welcome'))!!!
Maybe I'll end up contributing a friendly dynamic form creator for web2py
...
merci,
Luis.
On Mon, Jul 4, 2011 at 4:54 PM, Richard Vézina
wrote:
> Maybe you could find some inspiration from this project for Django :
>
> http://code.google.com/p/django-dynamic-formset/
>
> You need to install Django to test it...
>
> What you seems to do is adding an arbitrary number of input for a given
> field...
>
> Following good database design pratice you will normalise your schema... I
> had try to find a solution similar to django dynamic formset, but I give up
> in the pass.
>
> You have this thread that could maybe bring some answer :
> http://groups.google.com/group/web2py/browse_thread/thread/50af0d67554c94d9/ad553c6a5514ecc7?pli=1
>
> Web2py let you do this :
> http://www.web2py.com/book/default/chapter/07?search=filter#One-form-for-multiple-tables
>
> But you can't have fields with the same name in your table...
>
> Finally it maybe possible with component now to load a arbitrary number of
> fields inputs for a given table and with jQuery submit the differents forms
> as one I would investigate in that direction too...
>
> Good luck
>
> Richard
>
>
>
>
>
>
>
>
>
> On Mon, Jul 4, 2011 at 7:17 PM, Luis Goncalves wrote:
>
>> Hello Richard!
>>
>> I looked at this, but wasn't sure how it could help -- what I need is a
>> way for a (non-technical) admin to create profile forms with arbitrary
>> fields (through a friendly web interface), and then users to be able to view
>> and edit their (run-time reconfigurable) profiles.
>>
>> At any rate, the method I described above seems to work quite well,
>> thanks to web2py's versatility, allowing me to define forms programmatically
>> (excerpt below).
>>
>> I was wondering if there was a more clever/efficient/proper way to do so.
>> Perhaps not!
>>
>> Thanks!!
>> Luis.
>>
>> for field in event_fields:
>> # see if person has a pre-defined value
>> found = False
>> for my_efield in me.event_field:
>> if my_efield.display_title == field.display_title:
>> found = True
>> break
>>
>> if found:
>> if field.data_type == 'string':
>> new_input = INPUT(_type = field.data_type, _name =
>> field.id, requires=IS_NOT_EMPTY(), _value=my_efield.data )
>> form[0].insert(-2, TR(field.display_title+':', new_input
>> ))
>>
>> elif field.data_type == 'text':
>> .
>> else:
>> if field.data_type == 'string':
>> new_input = INPUT(_type = field.data_type, _name =
>> field.id, requires=IS_NOT_EMPTY())
>> form[0].insert(-2, TR(field.display_title+':', new_input
>> ))
>>
>> elif field.data_type == 'text':
>>
>>
>>
>>
>
Re: [web2py] how to implement database tables with one level of indirection?
Maybe you could find some inspiration from this project for Django : http://code.google.com/p/django-dynamic-formset/ You need to install Django to test it... What you seems to do is adding an arbitrary number of input for a given field... Following good database design pratice you will normalise your schema... I had try to find a solution similar to django dynamic formset, but I give up in the pass. You have this thread that could maybe bring some answer : http://groups.google.com/group/web2py/browse_thread/thread/50af0d67554c94d9/ad553c6a5514ecc7?pli=1 Web2py let you do this : http://www.web2py.com/book/default/chapter/07?search=filter#One-form-for-multiple-tables But you can't have fields with the same name in your table... Finally it maybe possible with component now to load a arbitrary number of fields inputs for a given table and with jQuery submit the differents forms as one I would investigate in that direction too... Good luck Richard On Mon, Jul 4, 2011 at 7:17 PM, Luis Goncalves wrote: > Hello Richard! > > I looked at this, but wasn't sure how it could help -- what I need is a way > for a (non-technical) admin to create profile forms with arbitrary fields > (through a friendly web interface), and then users to be able to view and > edit their (run-time reconfigurable) profiles. > > At any rate, the method I described above seems to work quite well, thanks > to web2py's versatility, allowing me to define forms programmatically > (excerpt below). > > I was wondering if there was a more clever/efficient/proper way to do so. > Perhaps not! > > Thanks!! > Luis. > > for field in event_fields: > # see if person has a pre-defined value > found = False > for my_efield in me.event_field: > if my_efield.display_title == field.display_title: > found = True > break > > if found: > if field.data_type == 'string': > new_input = INPUT(_type = field.data_type, _name = > field.id, requires=IS_NOT_EMPTY(), _value=my_efield.data ) > form[0].insert(-2, TR(field.display_title+':', new_input > )) > > elif field.data_type == 'text': > . > else: > if field.data_type == 'string': > new_input = INPUT(_type = field.data_type, _name = > field.id, requires=IS_NOT_EMPTY()) > form[0].insert(-2, TR(field.display_title+':', new_input > )) > > elif field.data_type == 'text': > > > >
Re: [web2py] how to implement database tables with one level of indirection?
Hello Richard! I looked at this, but wasn't sure how it could help -- what I need is a way for a (non-technical) admin to create profile forms with arbitrary fields (through a friendly web interface), and then users to be able to view and edit their (run-time reconfigurable) profiles. At any rate, the method I described above seems to work quite well, thanks to web2py's versatility, allowing me to define forms programmatically (excerpt below). I was wondering if there was a more clever/efficient/proper way to do so. Perhaps not! Thanks!! Luis. for field in event_fields: # see if person has a pre-defined value found = False for my_efield in me.event_field: if my_efield.display_title == field.display_title: found = True break if found: if field.data_type == 'string': new_input = INPUT(_type = field.data_type, _name = field.id, requires=IS_NOT_EMPTY(), _value=my_efield.data ) form[0].insert(-2, TR(field.display_title+':', new_input )) elif field.data_type == 'text': . else: if field.data_type == 'string': new_input = INPUT(_type = field.data_type, _name = field.id, requires=IS_NOT_EMPTY()) form[0].insert(-2, TR(field.display_title+':', new_input )) elif field.data_type == 'text':
Re: [web2py] how to implement database tables with one level of indirection?
I think you need inheritance :
http://web2py.com/book/default/chapter/06#Table-Inheritance
Richard
On Sun, Jul 3, 2011 at 1:15 AM, Luis Goncalves wrote:
> Hello!
>
> How do I make a database table where the fields are defined by another
> table?
>
> For example, suppose some users of my system are event organizers, and they
> can define what fields would belong in a person's profile.
>
> Then, attendees of that event have to fill out a profile with those
> specific fields.
>
> What is the best way to represent this information (the fields relevant for
> an event's profile, and the event profiles of users) in a database?
>
> What I have been thinking of so far is to define a table that holds the
> definitions of profile fields:
>
> db.define_table('event_profile_field',
> Field('event', db.event),
> Field('display_title','text'),
> Field('data_type',
> requires=IS_IN_SET('string','text','checkbox','list')),
> Field('display_order', 'int'))
>
> and then each user's profile is built up of multiple entries of the
> following:
>
> db.define_table('event_profile_entry',
> Field('person', db.person),
> Field('event', db.event),
> Field('event_profile_field', db.event_profile_field),
> Field('data') # XXX we need data to be of different types
>
> However, as indicated above by the comment, I'm not sure if it is possible
> to store different data types in the event_profile_entry.data field.
> (I suppose I could just make it be 'text' type and have the code know that
> a checkbox can only be True or False, for example).
>
> Is there a more efficient/smarter way to do this?
>
> Thanks,
> Luis.
>
