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Re: Problem wo loop WOHyperlink
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Re: Problem wo loop WOHyperlink

  • Subject: Re: Problem wo loop WOHyperlink
  • From: Hugo Cambero <email@hidden>
  • Date: Fri, 13 Jul 2012 18:33:53 -0500
Thanks for answering.

I learned something new. I'm going to change my code.

Hugo

On Fri, Jul 13, 2012 at 6:25 PM, Chuck Hill <email@hidden> wrote:

On 2012-07-13, at 2:52 PM, Hugo Cambero wrote:

> Hi Everybody
>
> I'm Hugo, I've been developing using WebObjects and Wonder Frameworks, I'm newbie in this topic.
>
> I have a problem and I hope you can help me. I'm developing a test application, I want to display a list of ERXGenericRecord, but, in the last column,
> I want to display a picture that can delete the selected row.
>
> Example:
>
> ID       NAME        LASTNAME       USERNAME          ACTIONS
> 120     Hugo          Perez                sun13                   delete
> 160     Aaron         Anthony            aaron12                 delete
>
> If the user clicks the delete picture of the first row, the application deletes the record 120.
>
> I'm trying to do it using the next code:
>
> <table>
>       <tr>
>          <td>ID</TD>
>          <td>Name</td>
>          <td>Lastname</td>
>          <td>Username</td>
>          <td>Actions</td>
>       </tr>
>       <wo:loop list="$allUsers" item="$entryItem">
>       <tr>
>             <td>
>                   <wo:str value="$entryItem.primaryKey" />
>             </td>
>             <td>
>                   <wo:str value="$entryItem.name" />
>             </td>
>             <td>
>                   <wo:str value="$entryItem.lastname" />
>             </td>
>             <td>
>                   <wo:str value="$entryItem.username" />
>             </td>
>             <td>
>                   <webobject name = "DeleteLink" >
>                         <webobject name = "DeleteImage"/>
>                   </webobject>
>            </td>
>      </tr>
>      </wo:loop>
> </table>
> ---------------------------
> DeleteLink : WOHyperlink {
>     directActionName="deleteRecord";

You don't want a direct action here, change this to (notice no quotes!):

        action = "">
Then in AdminPage.java add this:


public WOComponentAction deleteRecord() {
        editingContext.deleteObject(entryItem);
        editingContext.saveChanges();  // This can throw if the deletion fails
}


You also need the fixes below so the EOEditingContext is not changing all the time.

Chuck



> }
>
> DeleteImage : WOImage {
>     filename = "css/img/boton/delete.png";
>     mimeType="image/gif";
> }
> --------------------------
> package your.app.components;
>
> import your.app.model.User;
> import com.webobjects.appserver.WOContext;
> import com.webobjects.foundation.NSArray;
> import er.extensions.components.ERXComponent;
> import er.extensions.eof.ERXEC;
>
> public class AdminPage extends ERXComponent {
>     private User entryItem;

private EOEditingContext editingContext;


>
>     public AdminPage(WOContext context) {
>         super(context);

        editingContext = ERXEC.newEditingContext();


>     }
>
>     public User entryItem() {
>         return entryItem;
>     }
>
>     public void setEntryItem(User entryItem) {
>         this.entryItem = entryItem;
>     }
>
>     public NSArray<User> allUsers() {
>         return User.fetchAllUsers( ERXEC.newEditingContext() );


        return User.fetchAllUsers( editingContext );


>     }
> }
>
> I think, I can solve this problem, adding a key or data in GET method in the 'Delete Link', but, I don't know.
> What do you recommend me?
> What is the best way to do this exercise?
>
> Thanks!
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--
Chuck Hill             Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/gvc/practical_webobjects









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References: 
 >Problem wo loop WOHyperlink (From: Hugo Cambero <email@hidden>)
 >Re: Problem wo loop WOHyperlink (From: Chuck Hill <email@hidden>)

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