Re: Displaying preview image of an ERAttachment in a List or EmbeddedList
Re: Displaying preview image of an ERAttachment in a List or EmbeddedList
- Subject: Re: Displaying preview image of an ERAttachment in a List or EmbeddedList
- From: Ramsey Gurley <email@hidden>
- Date: Tue, 18 Nov 2014 10:31:50 -0700
You need to create a component. The getting started screencasts are good. Especially the ones David LeBer did (WebObjects, WOLips, and Wonder part 1 and 2). He got me started.
http://wiki.wocommunity.org/display/WEB/Screencasts
Creating the component should be relatively straightforward. The tricky bit is you need to generate the thumbnail. ERAttachment has code to do thumbnailing, but it doesn’t do it by default unless something has changed lately. It even has multiple image processors to give you native speed on some platforms. I think you will probably need to set up a attachment delegate to create the thumbnails yourself.
This would make a really nice example project for ERAttachment, but as far as I know, nobody has ever put one together.
On Nov 18, 2014, at 8:48 AM, Flavio Donadio <email@hidden> wrote:
> Hello, all!
>
>
> I took a good look at the online documentation and searched the list, but can't find an answer.
>
> I have an entity called Image with a to-one relationship to ERAttachment. It works perfectly: i can add, edit and delete images. I can even see the image in the ERMD2WEditAttachment component.
>
> Now I want to display a thumbnail of the ERAttachment in the "ListImage" page. I tried some components, but I can't make it work. The best I can get (using ERD2WDisplayAttachment) is an icon with the file name which, when clicked, will open the image in the browser.
>
> Is there a ready-made component that does that or will I have to create one? If I'll need to create one, is there a foolproof guide to component creation?
>
>
> Cheers,
> Flavio
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