Re: Problem wo loop WOHyperlink
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 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 NAMELASTNAME USERNAME ACTIONS
> > 120 Hugo Perezsun13 delete
> > 160 Aaron Anthonyaaron12 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:
> >
> >
> >
> > ID
> > Name
> > Lastname
> > Username
> > Actions
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > ---
> > DeleteLink : WOHyperlink {
> > directActionName="deleteRecord";
>
> You don't want a direct action here, change this to (notice no quotes!):
>
> action = deleteRecord;
>
> 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 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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Re: Problem EOEditingContext
Thanks for your answers, yes I found a method like this: public static User createUser(EOEditingContext editingContext, String maternalName , String name , String password , String paternalName , String username) But I prefer to user the method like this: User newUser = ERXEOControlUtilities.createAndInsertObject(ec, User.class ); On Thu, Jul 12, 2012 at 5:39 PM, Lon Varscsak wrote: > Oh, I like that! > > -Lon > > On Thu, Jul 12, 2012 at 3:26 PM, Maik Musall wrote: > > > > Am 12.07.2012 um 23:58 schrieb Louis Demers: > >> User newUser = (User)EOUtilities.createAndInsertInstance(ec, > User.ENTITY_NAME) ; > > > > Much too wordy for my taste, and needs a cast on top of it. Just add a > second constructor in your template which does ec.insertObject(this), so > that you can simply use > > > > User newUser = new User( ec ); > > > > Do not delete the parameter-less constructor though, because EOF needs > that internally when restoring objects from db. But refrain from using that > anywhere in your app. > > > > Maik > > ___ > > Do not post admin requests to the list. They will be ignored. > > Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) > > Help/Unsubscribe/Update your Subscription: > > > https://lists.apple.com/mailman/options/webobjects-dev/lon.varscsak%40gmail.com > > > > This email sent to lon.varsc...@gmail.com > ___ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/webobjects-dev/hhch40%40gmail.com > > This email sent to hhc...@gmail.com > ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Problem EOEditingContext
Thanks for your recommendation Johann Wernet
Yes, you are right, I have a problem with my model, I'll change it, and
I'll seek about ERXEOControlUtilities
Regards
On Thu, Jul 12, 2012 at 1:56 PM, Johann Werner wrote:
> Hi Hugo,
>
> welcome to WO!
>
> Am 12.07.2012 um 20:46 schrieb Hugo Cambero:
>
> Hi Everybody
>
> My name is Hugo, I'm from Mexico. I have been developing using WebObjects
> and Wonder Frameworks, I'm newbie in this topic.
>
> Well, I have a problem, I hope you can help me. I'm developing a test
> application, I want to learn about EOF.
>
> I have 2 entities, that I created using EOModel. The first entity is:
> User, the second is Role. The relationship between the entities is: One user
> can have many Roles.
>
> Well, I tried to insert a row using the next code:
>
> EOEditingContext ec = ERXEC.newEditingContext();
> Role userRole = Role.fetchRole( ec,
> Role.NAME.eq("user") ); //Get the correct Role to the new user
>
> User newUser = new User();
>
>
> don't create EOs that way, use
>
> ERXEOControlUtilities.createAndInsertObject(ec, User.class);
>
> newUser.setName( name.toLowerCase() );
> newUser.setPaternalName( paternalName.toLowerCase() );
> newUser.setMaternalName( maternalName.toLowerCase() );
> newUser.setBirthday( new NSTimestamp() );
> newUser.setUsername( username );
> newUser.setPassword( password );
>
> newUser.setRole( userRole ); //Set
> the role to the user
>
>
> you said that User <-->> Role but setRole() would point to a to-one
> relationship. A to-many relationship should give you
>
> user.addToRoles(role);
> user.removeFromRoles(role);
>
> so there seems to be a problem with your model or with your java classes.
>
>
> ec.insertObject( newUser );
> //Insert object to the EOEditingContext
> ec.saveChanges();
> //Commit to the DataBase
>
> But, the server has the next error:
>
> java.lang.RuntimeException: You crossed editing context boundaries
> attempting to set the 'role' relationship of pk:"null"> (which is not in an editing context) to pk:"2"> (in EC er.extensions.eof.ERXEC@762a5241).
>
> I understand that the primary key of the user is null, because it's a new
> user and I want to insert it to the data base.
>
> What is the correct way to insert row, when it have a relationship between
> the entities?
>
> Thanks for you time
>
>
>
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