The problem is now that the fields are always empty. In the solution that Quinton sended, nothing is written if I had to set a mapToObject. I thought that to prepopulate the fields, I had to set a mapToObject on a group ?
Xavier Ottolini wrote:
Thank you for your answer, Quinton.
I tried to implement your sample, I noticed one error :
> Group group = intake.getGroup("Page1");
the method does not exist in the IntakeTool class. So I replaced this line with :
Group group = intake.get("Group", IntakeTool.DEFAULT_KEY);
When I try to display the form, I get the following error in the turbine.log:
[Mon Jan 13 11:54:42 CET 2003] -- ERROR -- Error rendering Velocity template: screens/param/AgenceForm.vm: Invocation of method 'get("agenceid")' in class org.apache.turbine.services.intake.model.Group threw exception class org.apache.turbine.util.TurbineException
[Mon Jan 13 11:54:42 CET 2003] -- ERROR -- Error rendering Velocity template: screens/param/AgenceForm.vm: Error rendering Velocity template: screens/param/AgenceForm.vm: Invocation of method 'get("agenceid")' in class org.apache.turbine.services.intake.model.Group threw exception class org.apache.turbine.util.TurbineException
"agenceid" is a field of my Group.
Why do I get such messages ?
I have got other questions about your doBuildTemplate sample :
1) How is the group updated in the intake instance ? Is the "group.setProperties(obj)" enough ?
2) Why is there no "context.put(intake)" ?
Quinton McCombs wrote:
Here is one way to accomplish what you are trying to do.
When accessing a data entry form, I have an action or a screen class
that will load the appropriate object with Torque. I then get the
intake tool from the context and map my object to the group.
When the page displays to the user, the fields are populated with the
data from the object. When the action executes, I validate the intake group. If validation
fails, I do nothing else. The same page will be displayed again with
the values the user entered. If validation is successful, I take the
name of the next template to display either from some configurable value
(ie. Hidden form field, properties file, etc).
For the sake of this discussion - template with the form = Page1.vm
intake group name = Page1Group
Action = Page1Action
The form code would look like this:
<form ... action='$link.setPage("Page1.vm").setAction("Page1Action")>
#set( $group = $intake.Page1Group.Default )
$intake.declareGroups() <input type="hidden" name="nextTemplate" value="Page2.vm">
<input ... name="$group.Field1.Key" value="$group.Field1">
$!group.Field1.Message
<input ... Name="$group.Field2.Key" value="$group.Field2">
$!group.Field2.Message
screens.Page1.java doBuildTemplate() looks like
protected void doBuildTemplate(RunData data, Context context) throws
Exception
{
IntakeTool intake = (IntakeTool) context.get("intake");
MyObject obj = <code to retreive using torque>
Group group = intake.getGroup("Page1");
group.setProperties(obj);
}
actions.Page1Action doPerform() looks like
public void doPerform(RunData data, Context context) throws Exception
{
IntakeTool intake = (IntakeTool) context.get("intake");
Group group = intake.getGroup("Page1");
if(group.isAllValid())
{
MyObject obj = <code to retreive using torque>
group.getProperties(obj);
obj.save();
data.setScreenTemplate(data.getParameters().getString("nextTemplate"));
}
}
Although in my example, I used a screen class to populate the context,
you could use an action instead. It is also possible to use pull tools
to get the persistent object and map it to the intake group. I normally
use actions to populate the context.
You can also use ActionEvents instead of normal actions... I just
wanted to keep the example as basic as possible.
-----Original Message-----
From: Xavier Ottolini [mailto:[EMAIL PROTECTED]] Sent: Friday, January 10, 2003 10:06 AM
To: Turbine Users List
Subject: How to create a business object to represent the intake group ?
Hi,
I want to use Intake to redisplay a form with an error in the data.
In the how-to, it is written that to map the intake group to a business object , I should do something like this :
#set($loginForm = $mytool.getFormInstance())
$loginForm.setQueryKey("abc")
#set($loginGroup = $intake.LoginGroup.mapTo($loginForm))
1) My first question is : what is $mytool ? is it a business object ?
2) Nothing is written about the SecureScreen class when Intake is used. What should I do in the doBuildTemplate method ?
I read already the how-to and the service page, but I think that this point is confused.
Can anyone give me an explanation ?
Thanks
Xavier
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