On Mon, Aug 07, 2000 at 01:12:03PM -0300, Performance.net Strategic Internet Solutions wrote:
On Mon, Aug 07, 2000 at 11:21:53AM -0300, Performance.net Strategic Internet Solutions wrote:
I am writing a python product and want to display a GIF file in some of the manage_pages. It is not meant to be the "icon" property of the class, just an image to be included in DTML. I included it in my class as follows:
chooser = ImageFile('images/chooser.gif',globals()),
but when I call it in DTML (<dtml-var chooser>) I get the following:
<ImageFile instance at 014F1D90>
I thought maybe I could use an instance of the Image class:
chooser = OFS.Image('images/chooser.gif',globals()),
but this doesn't seem to work.
How do you create an instance of an Image in a Python Product?
ImageFile objects do not (like ZODB stored Image objects) generate an IMG tag when called. Image object, when called, generate an IMG tag that points the browser to the correct address to retrieve tha actual image.
With an ImageFile object, you need to construct the tag yourself. If this class has an instance foo, with this ImageFile attribute chooser, and the instance foo is stored in the root of your Zope ZODB, you need to point the browser to http://yoursever/foo/chooser. So your DTML needs to generate the following HTML:
<img src="http://yoursever/foo/chooser">
I don't know enough about your DTML, but if it is another attribute of the same class, you could use one of the URLx REQUEST variables or something to construct the URL for the image. Also, absolute_url() called on the foo instance may also work for a base URL.
Hope this helps.
Okay, I've done the following:
# Create the method in the .py Class File chooserIcon=ImageFile('images/chooserIcon.gif',globals()),
# Call from the .dtml File <img src="<dtml-var absolute_url>/chooserIcon" border=0>
absolute_url() works and the URL points correctly to http://myserver/foo/chooserIcon, but if I type in that URL directly, I get a "Not Found" error as though the method does not exist. I've double-checked that the image is there and named correctly, so it's not a syntax thing.
Perhaps I need to convert it to an "Image" object something like below?
# this doesn't work but illustrates the idea chooserIcon = Image( ImageFile('images/chooserIcon.gif',globals() )
Help! =:)
Hmm.. This is how Product Icons are stored, that is, as ImageFile objects. At product init time, a ImageFile objetcs is created for the Product icon and stroed in the special misc_ structure for later access. Have a look through the Product initialisation code, which is started up in OFS/Application.py::install_products(). -- Martijn Pieters | Software Engineer mailto:mj@digicool.com | Digital Creations http://www.digicool.com/ | Creators of Zope http://www.zope.org/ | ZopeStudio: http://www.zope.org/Products/ZopeStudio -----------------------------------------------------
