Apple

Let's start with thumbnails.

First of all... if in the ERAttachmentViewer I bind either the width or height, it resize correctly the picture.. now.. the question is can this become "heavy"? I think I'll use the thumbs only in list pages..or is better to create the thumb on insertion and simply display it later?

About D2W rule... if i use as a component ERDList, I don't have the new button to add the image.

This is the entity I create:

If I don't create any rule, this is what I see in the CreateProduct page:

Then, if I press New:

Nov 23 11:47:47 PNStoreAdmin[5100] WARN NSLog - <er.ajax.AjaxRequestHandler>: Exception occurred while handling request:

com.webobjects.foundation.NSForwardException [java.lang.InstantiationException] null:<er.attachment.model.ERAttachment> is an abstract class. It can not be instantiated !

[2010-11-23 11:47:47 CET] <WorkerThread3> com.webobjects.foundation.NSForwardException [java.lang.InstantiationException] null:<er.attachment.model.ERAttachment> is an abstract class. It can not be instantiated !

at com.webobjects.foundation._NSUtilities._explainInstantiationException(_NSUtilities.java:616)

at com.webobjects.foundation._NSUtilities.instantiateObjectWithConstructor(_NSUtilities.java:665)

Francesco

On 23/nov/2010, at 08.48, Francesco Romano wrote:

Are you actually going to display multiple photos for a Product?

Or are you displaying ...

one thumbnail
or

one big photo
or
one medium photo

David

What I want is the possibility to have many photos for a product. And i need one thumbnail (but I think I'll thumbnail every photos, otherwise it'l become a bit complex to manage everything..).. So in the list page I display the thumb, in the Inspect page I display all the photos (I don't know if every photo in the same moment, or just a sort of embedded gallery in the page with next and previous button..)

I'll try this morning creating a new project and a new db connection, to not destroy my old one, until I find the right migration

On 23/nov/2010, at 06.41, Denis Frolov wrote:

On Mon, Nov 22, 2010 at 11:27 PM, Francesco Romano
<email@hidden> wrote:

Ok.. I'll try this for the thumbnail..

About D2W...
I have something like

Product <-->> ERAttachment for a photos property.
But.. i watched the tutorial of David and he created a many-to-many, so

Product <-->> ProductPhotos <<--> ERAttachment
Product has a "photos" property (so a NSArray of ERAttachment).

But.. I don't know how to manage this with the rules, both on Inspect and on Edit/Create configuration.

BTW: how can I select the first object of an array with a rule?

You could try "photos.@objectAtIndex.0" but I think a better way would

be to add a cover method "thumbnail" to your Product.java returning
the attachment you need and use it in rule.

What I want to do is:
In ListProduct configuration I want to display the thumbnail

Cover method above would help you with this.

I'll go for the cover method

In Edit/Create Product configuration I want to display all the photos in "maximum" size (i don't know yet the size.. I'll decide later)

We use our own custom component for this, but I think you could use
ERDList or ERMDEditRelationship to display/edit the list of photos,

e.g.:

entity.name = 'Product' and task = 'edit' and propertyKey = 'photos'

=> componentName = 'ERDList'

I think I already tried something like that and it didn't work.... I'll try again..

Francesco

Denis

Thanks again for your answers

Francesco

On 22/nov/2010, at 21.05, Denis Frolov wrote:

Hi,

In fact, the support for thumbnails is already there in the model of

ERAttachment. Note the "parentAttachment"/"childrenAttachments"

relationships and "thumbnail" attribute. Just create a new
ERAttachment for thumbnail and add it to "childrenAttachments" of
original attachment. You can use "thumbnail" attribute to specify the

size of the thumbnail in case you need multiple thumbnails of

different sizes. We use strings like "200x150" for "thumbnail"

attribute.

As for the D2W, could you be more specific on what the problem is?

Denis

On Mon, Nov 22, 2010 at 7:49 PM, Francesco Romano

<email@hidden> wrote:

Hi.
I have two questions about ERAttachment.

1) Thumbnails are not available, yet, but.. what do I have to do to add support to them? I don't understand how to implement them "inside" erattachment

2) I'd like to have a many-to-many relationship between my entity and erattachment. I don't have problems in modeling, but.. how can I manage them using D2W and rules? (I'm creating two apps: an admin app using D2W Modern look, and a "front-end" app without D2W. I have problem in the D2W side...)

Thank for any help
Francesco Romano

_______________________________________________

Do not post admin requests to the list. They will be ignored.

Webobjects-dev mailing list (email@hidden)

Help/Unsubscribe/Update your Subscription:

References:
	>ERAttachment... to-many and thumbs (From: Francesco Romano <email@hidden>)
	>Re: ERAttachment... to-many and thumbs (From: Denis Frolov <email@hidden>)
	>Re: ERAttachment... to-many and thumbs (From: Francesco Romano <email@hidden>)
	>Re: ERAttachment... to-many and thumbs (From: Denis Frolov <email@hidden>)
	>Re: ERAttachment... to-many and thumbs (From: Francesco Romano <email@hidden>)
	>Re: ERAttachment... to-many and thumbs (From: Francesco Romano <email@hidden>)