I am not sure I fully understand. Are you trying to do this?
<a href="{{=URL('download', args=image.file)}}"><img width="200px"
src="{{=URL('download',
args=image.file)}}" /></a>
On Thursday, 18 July 2013 01:20:48 UTC-5, REM wrote:
>
> Hello, folks.
>
> I started back at the top of the manual again and I am understanding much
> more by progressing slowly and with copious notes. So far, so good.
>
> However, I have come across a bit of a puzzling issue with the latter part
> of the "images" tutorial. After creating the dbases, uploading some images
> via appadmin, and then adding the app's core in default.py:
>
> def index():
> images = db().select(db.image.ALL, orderby=db.image.title)
> return dict(images=images)
>
>
> def show():
> image = db.image(request.args(0,cast=int)) or redirect(URL('index'))
> db.post.image_id.default = image.id
> form = SQLFORM(db.post)
> if form.process().accepted:
> response.flash = 'your comment is posted'
> comments = db(db.post.image_id==image.id).select()
> return dict(image=image, comments=comments, form=form)
>
>
> def download():
> return response.download(request, db)
>
>
>
>
>
>
>
> And then creating the default/index.html:
>
> {{extend 'layout.html'}}
> <h1>Current Images</h1>
> <ul>
> {{for image in images:}}
> {{=LI(A(image.title, _href=URL("show", args=image.id)))}}
> {{pass}}
> </ul>
>
>
>
>
> And finally, the default/show.html:
>
> {{extend 'layout.html'}}
> <h1>Image: {{=image.title}}</h1>
> <center>
> <img width="200px"
> src="{{=URL('download', args=image.file)}}" />
> </center>
> {{if len(comments):}}
> <h2>Comments</h2><br /><p>
> {{for post in comments:}}
> <p>{{=post.author}} says <i>{{=post.body}}</i></p>
> {{pass}}</p>
> {{else:}}
> <h2>No comments posted yet</h2>
> {{pass}}
> <h2>Post a comment</h2>
> {{=form}}
>
>
>
>
>
> When the app is called, it behaves as expected in every instance with one
> exception: I was figuring that, based on:
>
> <img width="200px"
> src="{{=URL('download', args=image.file)}}" />
>
>
>
> When the image was displayed in the show.html view, that maybe it would be
> tagged with an embedded download link such that passing the mouse over the
> image would indicate a link and then clicking the image would trigger a
> download action to download the image. This does not occur. The app just
> displays the uploaded image with no apparent way to download it (aside from
> the usual right-click browser options). In fact, in looking at the app's
> structure, I can't see where the download action in the default.py
> controller is ever triggered, since all of that =URL('download',
> args=image.file)}} doesn't *appear* to cause any action with regard to
> the requested image which is being displayed.
>
> Through experimentation I discovered that I can indeed get a download
> action of the type which I *expected* to be triggered if I manually look
> up the name of the uploaded image file under
> applications/images/uploads/<filename> and then pass it to the download
> action myself in the address bar:
>
> http://localhost.../images/default/download/<filename>
>
> That's what I was expecting to happen when I clicked on the image (or was
> somehow otherwise directed to the download action), but apparently I was
> wrong to assume this...?
>
> In any case, how then does the download action get triggered if not by:
>
> <img width="200px"
> src="{{=URL('download', args=image.file)}}" />
>
>
>
> ?
>
> Any pointers, corrections, directions for further reading, etc. would be
> sincerely appreciated.
>
>
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