Re: Loadable non-detachable list model for listView

2013-02-24 Thread Sven Meier 

Hi,

when working with Wicket models, you should always call #getObject() or 
#getModelObject() as late as possible:


ListViewImagesGroup imagesGroupsListView = new 
ListViewImagesGroup(imagesGroupsListView, imagesGroupsModel) {

 @Override
 @Transactional
 protected void populateItem(final ListItemImagesGroup listItem) {

   AjaxLinkString deleteImagesGroup = new 
AjaxLinkString(deleteImagesGroup) {

 @Override
 public void onClick(AjaxRequestTarget target) {
   // access model object as late as possible
imagesGroupService.deleteImagesGroup(listItem.getModelObject());

   // force reload
   imagesGroupsModel.detach();

   target.add(imagesGroupsForm);
 }
   };

   listItem.add(deleteImagesGroup);
 }
};

Can you spot the difference?

Sven


On 02/24/2013 08:12 AM, meduolis wrote:

This does not solves the issue.

Heres my code:





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Re: Loadable non-detachable list model for listView

2013-02-24 Thread meduolis 
I get same exception with your updates. Looks like I have to reload object
from database before it's deletion or delete it by id. Anyway, thanks for
help.



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Re: Loadable non-detachable list model for listView

2013-02-24 Thread Sven Meier 
You'll need to apply the OSIV pattern for that.

Sven



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Re: Loadable non-detachable list model for listView

2013-02-24 Thread meduolis 
Yes, this is what I wanted. But after I made some investigation how to apply
this OSIV filter I found that it could bring more mess then happiness :D;

Source:
http://stackoverflow.com/questions/1103363/why-is-hibernate-open-session-in-view-considered-a-bad-practice

Source how to apply:
http://www.jroller.com/cardsharp/entry/open_session_in_view_pattern;

Thanks Sven, for help.



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Loadable non-detachable list model for listView

2013-02-09 Thread meduolis 
Hi, is there any way to create non-detachable objects model for list view?

I want to load actual objects from database for listview items, so I will be
able to modify them without reloading.

Let say:

If I use

as my listView model I will not be able to delete them right away like this

I will get an exception that object is detached. So if I want to delete it,
I need to reload it from DB.

Is there any way to load non-detached model object?



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Re: Loadable non-detachable list model for listView

2013-02-09 Thread Sven Meier 
You can use a model that is able to load the image object from the 
database by id:


http://wicketinaction.com/2008/09/building-a-smart-entitymodel/

Either you override ListView#getListItemModel() to return such a smart 
model or you use IDataProvider.


Hope this helps
Sven

On 02/09/2013 02:05 PM, meduolis wrote:

Hi, is there any way to create non-detachable objects model for list view?

I want to load actual objects from database for listview items, so I will be
able to modify them without reloading.

Let say:

If I use

as my listView model I will not be able to delete them right away like this

I will get an exception that object is detached. So if I want to delete it,
I need to reload it from DB.

Is there any way to load non-detached model object?



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