[Lift] Newbee Question: Why does MappedXXX do not generate a CSS-class/style attribute?
Hello, I use the _toForm method of the MappedFields. Why do they not have a field for specifing a CSS-class by default. Ok, it is easy to override the _toForm method, but I think there may be a reason that such a field is not provided by default??? hyperion --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Lift group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~--~~~~--~~--~--~---
[Lift] Re: Newbee question Datamapper
Then I would have two tables I suggest. But thank you nevertheless, it
is not so
important, I can live with fields mapping single columns ;). I only
wanted to reduce
some redundancy and was interested if it is possible to build such
types.
On Oct 18, 12:23 am, David Pollak feeder.of.the.be...@gmail.com
wrote:
On Sat, Oct 17, 2009 at 2:42 AM, hyperion hyperion1...@googlemail.comwrote:
I think my simple solution does not work... and the implementation of
MappedPassword is not really easy to understand. I thought such
classes
would be nice for datatypes as Currency, Timespan etc... that appear
everwhere
in the application but where own tables are not useful.
As I said, MappedPassword was a mistake. Supporting multiple columns
mapping to a single field was a mistake. It's hard stuff to get right.
The solution of Naftoli, I tried... but maybe I did something wrong:
trait MyMappedTimeSpan[T :Mapper[T]]{
import net.liftweb.util._
import net.liftweb.http.S
import xml.NodeSeq
object from extends MappedTime[T](this.asInstanceOf[T])
object to extends MappedTime[T](this.asInstanceOf[T])
}
class Bericht extends LongKeyedMapper[Bericht] with IdPK with OneToMany
[Long, Bericht]{
override def getSingleton = Bericht
object mittag extends MyMappedTimeSpan[Bericht]
...
If someone found a simple solution, please tell me so :)
Your class should look like:
class Bericht extends LongKeyedMapper[Bericht] with IdPK with OneToMany
[Long, Bericht] with MyMappedTimeSpan[Bericht] {
...
}
hyperion
On 16 Okt., 22:01, David Pollak feeder.of.the.be...@gmail.com wrote:
On Fri, Oct 16, 2009 at 9:42 AM, Naftoli Gugenheim naftoli...@gmail.com
wrote:
I think there is support somewhere in the MappedField hierarchy for a
MappedField that represents to database columns. Take a look at
MappedPassword.
Having a field represent two columns (as MappedPassword does) is a huge
piece of pain. I've made a ton of mistakes with Mapper, but the biggest,
nastiest shining hairball of a mistake was compound columns. Have I
scared
anyone off using them yet?
-
harryhhar...@gmail.com wrote:
Make MyMappedTimeSpan a trait:
trait MyMappedTimeSpan[T :Mapper[T]](val owner: T) {
object from extends MappedTime[MapperType](this.asIntanceOf
[MatterType])
object to extends MappedTime[MapperType](this.asIntanceOf
[MatterType])
}
And then use it like so:
class DBObject extends LongKeyedMapper[Bericht] with IdPK with
MyMappedTimeSpan[DBObject] {
}
-harryh
On Oct 16, 8:08 am, hyperion hyperion1...@googlemail.com wrote:
Hello,
I tried this:
class MyMappedTimeSpan[T :Mapper[T]](val owner: T){
import net.liftweb.util._
import net.liftweb.http.S
import xml.NodeSeq
val from = new MappedTime(owner)
val to = new MappedTime(owner)
}
class DBObject extends LongKeyedMapper[Bericht] with IdPK {
def getSingleton = Bericht
...
object test extends MyMappedTimeSpan(this)
}
and bound this class with:
from - bt.test.from.toForm,
to - bt.test.to.toForm,
In html:
tr
tdbt:von//td
tdbt:nach//td
/tr
Everything worked fine... except that my timespan is completely
ignored in the database ;). I think the reason is you use reflection
on class DBObject to find all values that should be stored in the
dabase?... but I have not inspected the source code jet... I am new
to
lift and also to scala
My Question: Is it possible to build such Datatypes based on two or
more DB-Fields of the single table...?... I think even they are
mapped to the master-DB-table, such types could be helpful...
Greetz
--
Lift, the simply functional web frameworkhttp://liftweb.net
Beginning Scalahttp://www.apress.com/book/view/1430219890
Follow me:http://twitter.com/dpp
Surf the harmonics
--
Lift, the simply functional web frameworkhttp://liftweb.net
Beginning Scalahttp://www.apress.com/book/view/1430219890
Follow me:http://twitter.com/dpp
Surf the harmonics
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You received this message because you are subscribed to the Google Groups
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[Lift] Re: Newbee question Datamapper
I think my simple solution does not work... and the implementation of
MappedPassword is not really easy to understand. I thought such
classes
would be nice for datatypes as Currency, Timespan etc... that appear
everwhere
in the application but where own tables are not useful.
The solution of Naftoli, I tried... but maybe I did something wrong:
trait MyMappedTimeSpan[T :Mapper[T]]{
import net.liftweb.util._
import net.liftweb.http.S
import xml.NodeSeq
object from extends MappedTime[T](this.asInstanceOf[T])
object to extends MappedTime[T](this.asInstanceOf[T])
}
class Bericht extends LongKeyedMapper[Bericht] with IdPK with OneToMany
[Long, Bericht]{
override def getSingleton = Bericht
object mittag extends MyMappedTimeSpan[Bericht]
...
If someone found a simple solution, please tell me so :)
hyperion
On 16 Okt., 22:01, David Pollak feeder.of.the.be...@gmail.com wrote:
On Fri, Oct 16, 2009 at 9:42 AM, Naftoli Gugenheim
naftoli...@gmail.comwrote:
I think there is support somewhere in the MappedField hierarchy for a
MappedField that represents to database columns. Take a look at
MappedPassword.
Having a field represent two columns (as MappedPassword does) is a huge
piece of pain. I've made a ton of mistakes with Mapper, but the biggest,
nastiest shining hairball of a mistake was compound columns. Have I scared
anyone off using them yet?
-
harryhhar...@gmail.com wrote:
Make MyMappedTimeSpan a trait:
trait MyMappedTimeSpan[T :Mapper[T]](val owner: T) {
object from extends MappedTime[MapperType](this.asIntanceOf
[MatterType])
object to extends MappedTime[MapperType](this.asIntanceOf
[MatterType])
}
And then use it like so:
class DBObject extends LongKeyedMapper[Bericht] with IdPK with
MyMappedTimeSpan[DBObject] {
}
-harryh
On Oct 16, 8:08 am, hyperion hyperion1...@googlemail.com wrote:
Hello,
I tried this:
class MyMappedTimeSpan[T :Mapper[T]](val owner: T){
import net.liftweb.util._
import net.liftweb.http.S
import xml.NodeSeq
val from = new MappedTime(owner)
val to = new MappedTime(owner)
}
class DBObject extends LongKeyedMapper[Bericht] with IdPK {
def getSingleton = Bericht
...
object test extends MyMappedTimeSpan(this)
}
and bound this class with:
from - bt.test.from.toForm,
to - bt.test.to.toForm,
In html:
tr
tdbt:von//td
tdbt:nach//td
/tr
Everything worked fine... except that my timespan is completely
ignored in the database ;). I think the reason is you use reflection
on class DBObject to find all values that should be stored in the
dabase?... but I have not inspected the source code jet... I am new to
lift and also to scala
My Question: Is it possible to build such Datatypes based on two or
more DB-Fields of the single table...?... I think even they are
mapped to the master-DB-table, such types could be helpful...
Greetz
--
Lift, the simply functional web frameworkhttp://liftweb.net
Beginning Scalahttp://www.apress.com/book/view/1430219890
Follow me:http://twitter.com/dpp
Surf the harmonics
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google Groups
Lift group.
To post to this group, send email to liftweb@googlegroups.com
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liftweb+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en
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