Re: DropDownChoice getting value into the model
Perhaps I'm missing something big time about BoundCompoundPropertyModel. I
removed my loadable detachable model and still can't get it to work
specifically with a dropdown element.
The following works...
FormComponent networks = new DropDownChoice(network, new
PropertyModel(phone, network), networksList);
but the following doesn't
FormComponent networks = new DropDownChoice(network, new
BoundCompoundPropertyModel(phone), networksList);
I've tried stepping into the code but can't resolve the issue. Can anyone
confirm or explain this problem?
Russell Webb wrote:
I am experiencing something similar. My LoadableDetachableModel is wrapped
with a CompoundPropertyModel.
Submitting a TexTField acquires the AttachedCompoundPropertyModel whose
setObject() acquires the target object and persists changes.
CompoundPropertyModel$AttachedCompoundPropertyModel(AbstractPropertyModel).setObject(Object)
line: 146
TextField(Component).setModelObject(Object) line: 2888
TextField(FormComponent).updateModel() line: 1060
Form$19.validate(FormComponent) line: 1754
Submitting the dropdown acquires the read only setObject()
VxsNewUserWizard$3(AbstractReadOnlyModel).setObject(Object) line: 52
BoundCompoundPropertyModel(CompoundPropertyModel).setObject(Object)
line: 72
DropDownChoice(Component).setModelObject(Object) line: 2888
DropDownChoice(FormComponent).updateModel() line: 1060
Form$19.validate(FormComponent) line: 1754
It seems the model is linked to the two components differently and that
this causes different behaviour when using a CompoundPropertyModel (and
perhaps others) like allowing the ReadOnlyModel.setObject to be bypassed.
Russ
igor.vaynberg wrote:
perhaps because your textfield is setting a property of the object
loaded by the model, not the object itself.
-igor
On Fri, Mar 7, 2008 at 1:48 PM, rmattler [EMAIL PROTECTED] wrote:
Thanks for the quick reply. But you answer doesn't make sense to me.
Why do
loadable models work for a text field but not a drop down? If I have
NY
stored in the database, New York is loaded onto the form but when the
form
is submitted the selected value of the drop down is not saved into the
model. I'm trying to get the selected value stored into the Vendor
object
and a String not a SelectOption.
public class Vendor implements java.io.Serializable {
private String state;
two problems
1) loadable detachable models do not support the setobject() call,
because they are...loadable. so you should use a different kind of
model.
2) yes, selectoption object will be put into your model, dropdown
choice works like this:
DropDownChoiceT(String id, IModelT model, IModelListT choices,
IChoiceRenrererT renderer)
-igor
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Re: DropDownChoice getting value into the model
I am experiencing something similar. My LoadableDetachableModel is wrapped
with a CompoundPropertyModel.
Submitting a TexTField acquires the AttachedCompoundPropertyModel whose
setObject() acquires the target object and persists changes.
CompoundPropertyModel$AttachedCompoundPropertyModel(AbstractPropertyModel).setObject(Object)
line: 146
TextField(Component).setModelObject(Object) line: 2888
TextField(FormComponent).updateModel() line: 1060
Form$19.validate(FormComponent) line: 1754
Submitting the dropdown acquires the read only setObject()
VxsNewUserWizard$3(AbstractReadOnlyModel).setObject(Object) line: 52
BoundCompoundPropertyModel(CompoundPropertyModel).setObject(Object)
line: 72
DropDownChoice(Component).setModelObject(Object) line: 2888
DropDownChoice(FormComponent).updateModel() line: 1060
Form$19.validate(FormComponent) line: 1754
It seems the model is linked to the two components differently and that this
causes different behaviour when using a CompoundPropertyModel (and perhaps
others) like allowing the ReadOnlyModel.setObject to be bypassed.
Russ
igor.vaynberg wrote:
perhaps because your textfield is setting a property of the object
loaded by the model, not the object itself.
-igor
On Fri, Mar 7, 2008 at 1:48 PM, rmattler [EMAIL PROTECTED] wrote:
Thanks for the quick reply. But you answer doesn't make sense to me.
Why do
loadable models work for a text field but not a drop down? If I have
NY
stored in the database, New York is loaded onto the form but when the
form
is submitted the selected value of the drop down is not saved into the
model. I'm trying to get the selected value stored into the Vendor
object
and a String not a SelectOption.
public class Vendor implements java.io.Serializable {
private String state;
two problems
1) loadable detachable models do not support the setobject() call,
because they are...loadable. so you should use a different kind of
model.
2) yes, selectoption object will be put into your model, dropdown
choice works like this:
DropDownChoiceT(String id, IModelT model, IModelListT choices,
IChoiceRenrererT renderer)
-igor
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Re: DropDownChoice getting value into the model
Well, IChoiceRenderer gives you ability to use any field of your custom
choice object for rendering. In order to select a choice before rendering
I'd implement custom choices IModel with additional method like: Object
getSelected(T key) to set selection model object properly. Then I use
DropDownCoice constructor that takes both models and renderer.
Vitaly Tsaplin wrote:
An index is a kind of a link between a value and its displayable
representation. Having an index in getDisplayValue method we would do
something like:
ListInteger lang_choices = Arrays.asList (new Object [] { 1, 2, 4, 8
});
Object [] lang_labels = new Object [] { php, perl, java, c++ };
public Object getDisplayValue (Object object, int index) {
return lang_labels [index];
}
public String getValueId (Object object, int index) {
return String.valueOf (object);
}
It should be more efficient then to do a map lookup for every
option especially in case of a long option list.
Personally I think that things could be more simple and logical
with less faceless model. I mean having a model which is based on an
interface (not a simple single object container) like in swing or
tapestry would help.
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Re: DropDownChoice getting value into the model
I don't have time to work on this right now, have real work to do. But I now believe I understand my problem. The Vendor bean needs to have the field 'state' be the class of State not String. Now I just need to figure out how to do that with Hibernate. I did buy your book. It is excellent everybody should buy one or two. How is that for a plug? -- View this message in context: http://www.nabble.com/DropDownChoice-getting-value-into-the-model-tp15905486p1597.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DropDownChoice getting value into the model
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Re: DropDownChoice getting value into the model
{
private long tblId;
private String state;
@Column(name = state, length = 2)
public String getState() {
return this.state;
}
public void setState(String state) {
this.state = state;
}
Johan Compagner wrote:
This has to work yes, the only thing is do build up the new
Model(states) as States so the same type of object as vendor.state
returns.
On 3/7/08, Kai Mutz [EMAIL PROTECTED] wrote:
[EMAIL PROTECTED] wrote:
It is nice to know I'm not the only one struggling with
DropDownChoices. I'm new to Wicket and I'm pretty far with
rebuilding an application we are using internally. Has anybody
proposed an alternative or a wrapper to DropDownChoices?
Have you tried something like:
Vendor vendor = (Vendor) vendorModel.getObject();
DropDownChoice stateFC = new DropDownChoice(state, new
PropertyModel(vendor, state), new Model(states), choiceRenderer);
This should work.
Kai
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Re: DropDownChoice getting value into the model
This has to work yes, the only thing is do build up the new Model(states) as States so the same type of object as vendor.state returns. On 3/7/08, Kai Mutz [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: It is nice to know I'm not the only one struggling with DropDownChoices. I'm new to Wicket and I'm pretty far with rebuilding an application we are using internally. Has anybody proposed an alternative or a wrapper to DropDownChoices? Have you tried something like: Vendor vendor = (Vendor) vendorModel.getObject(); DropDownChoice stateFC = new DropDownChoice(state, new PropertyModel(vendor, state), new Model(states), choiceRenderer); This should work. Kai - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DropDownChoice getting value into the model
No it works also good, exactly the same if you where using the swing combobox. The problem that you have is that when you have an id (integer) in your object model that needs to be set but thagt id is the id of a Person then i think your object model is just plain wrong. Its not an object model at all its just direct sql/resultset mapping instead of a real pojo model. On 3/7/08, Vitaly Tsaplin [EMAIL PROTECTED] wrote: The DropDownBox component is in fact well designed in theory. But I think the way it works is a bit inconvenient in practice. Normally the main purpose of this component in to supply some value or an index for a model but a label is needed only for to be presented to a user. Unfortunately we are supposed to use either the same value (a string representation) for both pupposes or to use some kind of a wrapper and to pollute the model by some strange SelectOption object even though that the model would normally accept an integer. Vitaly - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DropDownChoice getting value into the model
Hi Vitaly, That is correct. For primitive model values you need something like a map. I think the DropDownBox was more designed for complex data where the data to display is embedded in the model value itself. Anyway, how would the addition of an index argument to the display method help? Regards, Erik. Vitaly Tsaplin schreef: Hi everyone, Hi Erik, I am sorry for so late post. But am going to go back to our DropDownChoice discussion. If you suggest me to create a list of integers and use a special renderer implementation to retrieve a displayable value you should take into account that in case if we have a list of indices we can easily look up in an array or a list using an index. But if we have a list of unordered integers for example to do such a lookup we need to create a map and search this map every time we render a single option. That comes from the fact that a relationship between a value and its displayable equivalent is not obvious for a renderer. So I would ask to add an index of an options being rendered to the getDisplayValue method. Vitaly - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DropDownChoice getting value into the model
An index is a kind of a link between a value and its displayable
representation. Having an index in getDisplayValue method we would do
something like:
ListInteger lang_choices = Arrays.asList (new Object [] { 1, 2, 4, 8 });
Object [] lang_labels = new Object [] { php, perl, java, c++ };
public Object getDisplayValue (Object object, int index) {
return lang_labels [index];
}
public String getValueId (Object object, int index) {
return String.valueOf (object);
}
It should be more efficient then to do a map lookup for every
option especially in case of a long option list.
Personally I think that things could be more simple and logical
with less faceless model. I mean having a model which is based on an
interface (not a simple single object container) like in swing or
tapestry would help.
-
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Re: DropDownChoice getting value into the model
Hi everyone, Hi Erik, I am sorry for so late post. But am going to go back to our DropDownChoice discussion. If you suggest me to create a list of integers and use a special renderer implementation to retrieve a displayable value you should take into account that in case if we have a list of indices we can easily look up in an array or a list using an index. But if we have a list of unordered integers for example to do such a lookup we need to create a map and search this map every time we render a single option. That comes from the fact that a relationship between a value and its displayable equivalent is not obvious for a renderer. So I would ask to add an index of an options being rendered to the getDisplayValue method. Vitaly On Fri, Mar 7, 2008 at 10:33 PM, Erik van Oosten [EMAIL PROTECTED] wrote: Hello Vitaly, That is not true, you are thinking to complicated (I did in the past as well). If you want to set an integer on the model, then the choices must be a list of integers. In addition you set an IChoiceRenderer that can display the integer as a sensible string. Regards, Erik. Vitaly Tsaplin wrote: The DropDownBox component is in fact well designed in theory. But I think the way it works is a bit inconvenient in practice. Normally the main purpose of this component in to supply some value or an index for a model but a label is needed only for to be presented to a user. Unfortunately we are supposed to use either the same value (a string representation) for both pupposes or to use some kind of a wrapper and to pollute the model by some strange SelectOption object even though that the model would normally accept an integer. Vitaly - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
DropDownChoice getting value into the model
I've tried for 1 1/2 days to get this simple Drop Down to work and I'm
feeling stupid. My mom tells me I'm smart.:-(
Everything works fine until I try to save it. I get the following error. I
think it is trying to put the SelectOption object into the Model but I don't
know how to tell it to put the state var from SelectOption into my Vendor
object.
java.lang.UnsupportedOperationException: Model class
com.myprepress.pages.vendor.profile.VendorEntry$1 does not support
setObject(Object)
IModel vendorModel = new LoadableDetachableModel() {
protected Object load() {
return vendorDAO.load(tblId);
}
};
// add state
ArrayListSelectOption states = new ArrayListSelectOption();
states.add(new SelectOption(AL, Alabama));
states.add(new SelectOption(OH, Ohio));
states.add(new SelectOption(NY, New York));
ChoiceRenderer choiceRenderer = new ChoiceRenderer(display,
state);
DropDownChoice stateFC = new DropDownChoice(state,
vendorModel, new
Model(states), choiceRenderer);
public class SelectOption implements Serializable {
private String state;
private String display;
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Re: DropDownChoice getting value into the model
two problems
1) loadable detachable models do not support the setobject() call,
because they are...loadable. so you should use a different kind of
model.
2) yes, selectoption object will be put into your model, dropdown
choice works like this:
DropDownChoiceT(String id, IModelT model, IModelListT choices,
IChoiceRenrererT renderer)
-igor
On Fri, Mar 7, 2008 at 12:37 PM, rmattler [EMAIL PROTECTED] wrote:
I've tried for 1 1/2 days to get this simple Drop Down to work and I'm
feeling stupid. My mom tells me I'm smart.:-(
Everything works fine until I try to save it. I get the following error. I
think it is trying to put the SelectOption object into the Model but I don't
know how to tell it to put the state var from SelectOption into my Vendor
object.
java.lang.UnsupportedOperationException: Model class
com.myprepress.pages.vendor.profile.VendorEntry$1 does not support
setObject(Object)
IModel vendorModel = new LoadableDetachableModel() {
protected Object load() {
return vendorDAO.load(tblId);
}
};
// add state
ArrayListSelectOption states = new
ArrayListSelectOption();
states.add(new SelectOption(AL, Alabama));
states.add(new SelectOption(OH, Ohio));
states.add(new SelectOption(NY, New York));
ChoiceRenderer choiceRenderer = new ChoiceRenderer(display,
state);
DropDownChoice stateFC = new DropDownChoice(state,
vendorModel, new
Model(states), choiceRenderer);
public class SelectOption implements Serializable {
private String state;
private String display;
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RE: DropDownChoice getting value into the model
[EMAIL PROTECTED] wrote: I've tried for 1 1/2 days to get this simple Drop Down to work and I'm feeling stupid. My mom tells me I'm smart.:-( Everything works fine until I try to save it. I get the following error. I think it is trying to put the SelectOption object into the Model but I don't know how to tell it to put the state var from SelectOption into my Vendor object. Does your Vendor object have an field of type SelectOption? If not which field do you want to set with the select box? Perhaps this helps: http://cwiki.apache.org/WICKET/another-dropdownchoice-example-by-adam.html Kai - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: DropDownChoice getting value into the model
Thanks for the quick reply. But you answer doesn't make sense to me. Why do
loadable models work for a text field but not a drop down? If I have NY
stored in the database, New York is loaded onto the form but when the form
is submitted the selected value of the drop down is not saved into the
model. I'm trying to get the selected value stored into the Vendor object
and a String not a SelectOption.
public class Vendor implements java.io.Serializable {
private String state;
two problems
1) loadable detachable models do not support the setobject() call,
because they are...loadable. so you should use a different kind of
model.
2) yes, selectoption object will be put into your model, dropdown
choice works like this:
DropDownChoiceT(String id, IModelT model, IModelListT choices,
IChoiceRenrererT renderer)
-igor
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Re: DropDownChoice getting value into the model
perhaps because your textfield is setting a property of the object
loaded by the model, not the object itself.
-igor
On Fri, Mar 7, 2008 at 1:48 PM, rmattler [EMAIL PROTECTED] wrote:
Thanks for the quick reply. But you answer doesn't make sense to me. Why do
loadable models work for a text field but not a drop down? If I have NY
stored in the database, New York is loaded onto the form but when the form
is submitted the selected value of the drop down is not saved into the
model. I'm trying to get the selected value stored into the Vendor object
and a String not a SelectOption.
public class Vendor implements java.io.Serializable {
private String state;
two problems
1) loadable detachable models do not support the setobject() call,
because they are...loadable. so you should use a different kind of
model.
2) yes, selectoption object will be put into your model, dropdown
choice works like this:
DropDownChoiceT(String id, IModelT model, IModelListT choices,
IChoiceRenrererT renderer)
-igor
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Re: DropDownChoice getting value into the model
It is nice to know I'm not the only one struggling with DropDownChoices. I'm new to Wicket and I'm pretty far with rebuilding an application we are using internally. Has anybody proposed an alternative or a wrapper to DropDownChoices? Vitaly Tsaplin wrote: The DropDownBox component is in fact well designed in theory. But I think the way it works is a bit inconvenient in practice. Normally the main purpose of this component in to supply some value or an index for a model but a label is needed only for to be presented to a user. Unfortunately we are supposed to use either the same value (a string representation) for both pupposes or to use some kind of a wrapper and to pollute the model by some strange SelectOption object even though that the model would normally accept an integer. Vitaly - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/DropDownChoice-getting-value-into-the-model-tp15905486p15907346.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: DropDownChoice getting value into the model
[EMAIL PROTECTED] wrote: It is nice to know I'm not the only one struggling with DropDownChoices. I'm new to Wicket and I'm pretty far with rebuilding an application we are using internally. Has anybody proposed an alternative or a wrapper to DropDownChoices? Have you tried something like: Vendor vendor = (Vendor) vendorModel.getObject(); DropDownChoice stateFC = new DropDownChoice(state, new PropertyModel(vendor, state), new Model(states), choiceRenderer); This should work. Kai - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: DropDownChoice getting value into the model
Thanks for trying but I get: WicketMessage: No get method defined for class: class java.lang.String expression: state Kai Mütz wrote: [EMAIL PROTECTED] wrote: It is nice to know I'm not the only one struggling with DropDownChoices. I'm new to Wicket and I'm pretty far with rebuilding an application we are using internally. Has anybody proposed an alternative or a wrapper to DropDownChoices? Have you tried something like: Vendor vendor = (Vendor) vendorModel.getObject(); DropDownChoice stateFC = new DropDownChoice(state, new PropertyModel(vendor, state), new Model(states), choiceRenderer); This should work. Kai - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/DropDownChoice-getting-value-into-the-model-tp15905486p15907691.html Sent from the Wicket - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: DropDownChoice getting value into the model
[EMAIL PROTECTED] wrote: Thanks for trying but I get: WicketMessage: No get method defined for class: class java.lang.String expression: state Have you defined a getter/setter for field state in your vendor class? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: DropDownChoice getting value into the model
Yes
@Column(name = state, length = 2)
public String getState() {
return this.state;
}
public void setState(String state) {
this.state = state;
}
Kai Mütz wrote:
[EMAIL PROTECTED] wrote:
Thanks for trying but I get:
WicketMessage: No get method defined for class: class
java.lang.String expression: state
Have you defined a getter/setter for field state in your vendor class?
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Re: DropDownChoice getting value into the model
But in java.lang.String there is no state property.
You added a list of Strings to the ddc. But you have to add your vendor
objects. The display in ddc will be done by ChoiceRenderer.
Cheers
Per
Am Freitag, 7. März 2008 23:34:35 schrieb rmattler:
Yes
@Column(name = state, length = 2)
public String getState() {
return this.state;
}
public void setState(String state) {
this.state = state;
}
Kai Mütz wrote:
[EMAIL PROTECTED] wrote:
Thanks for trying but I get:
WicketMessage: No get method defined for class: class
java.lang.String expression: state
Have you defined a getter/setter for field state in your vendor class?
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