Question

Here are three Pyramid view_callables which setup a page with data and two image files. Trouble is, only one of the images (file responses) is returned. It seems I can only return one of the images at a time. If I take one of the file response vc’s away, the other images is returned. However, if I have both file respone vc’s there, only the second image is returned. Is there some object in the first vc I’m overwriting with the second vc?

Is there a better way to return both images (files), even within the first # title vc? As it is now, even if it worked, I have to retrieve the same document from the database 3 times for the one template. Any advice or clues would be greatly appreciated.

# title
@view_config(
        route_name='title',
        renderer='templates/titles/title.jinja2')
def title(request):
    title = Title().find_one({'_id':ObjectId(request.matchdict['_id'])})
    result = dict(
            user = request.user,
            title = title)
    return result

# view title image
@view_config(route_name="view_title_image")
def jpg(request):
    fd = Title().find_one({'_id':ObjectId(request.matchdict['title_id'])}).TitleImage
    response = Response(content_type='application/jpg')
    response.app_iter = fd.File
    print fd
    return response

# view trailer thumbnail
@view_config(route_name="view_trailer_thumbnail")
def jpg(request):
    fd = Title().find_one({'_id':ObjectId(request.matchdict['title_id'])}).TrailerThumbnail
    response = Response(content_type='application/jpg')
    response.app_iter = fd.File
    print fd
    return response

Here are the route configs from __init__:

# title
config.add_route('title', '/title/{_id}')

# view title image
config.add_route('view_title_image', '/view/title_image/{title_id}')

# view title image
config.add_route('view_trailer_thumbnail', '/view/trailer_thumbnail/{title_id}')

This is how its used in the Jinja2 template:

<img src="/view/title_image/{{ title._id }}">

<img src="/view/trailer_thumbnail/{{ title._id }}">

Answer 1

I think your problem is that both views have the function named jpg.

Although it’s not a great idea to overwrite functions like that, I would have thought that this would be no problem at all for the view_config decorator. The only thing I can think of is that rather recording a reference to the function, view_config works out what the dotted path would be and records that.

Anyway, give the view functions different names and you should be fine.