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Hi Tom & all,<br>
<br>
First of all, thanks for the help. Its much appreciated :) I understand
what you're suggesting, but I needed a way to do it without traversal.
For what I'm trying to do, the interface and implementation of the zope
objects need to be as simple as possible - anything fancy needs to be
(if possible) outside the interface/implementation (like in a widget)<br>
<br>
I attached what I ended up doing for the widget and the form. Its
nothing radical, and very crude, but it works.<br>
<br>
(The supdoc attribute in the form is defined as <br>
<pre wrap="">supDoc = List(title=_(u"Supporting Docs List"), value_type=Object(IImage, __name__='ImgItem', title=_(u"Image")))
<span class="moz-txt-citetags">> </span>
<span class="moz-txt-citetags">> </span></pre>
anyway, hope this helps anyone who gets stuck on this sort of thing.<br>
<br>
Again, thanks.<br>
Adam<br>
<br>
Tom Dossis wrote:
<blockquote cite="mid45828658.4090105@yoma.com.au" type="cite">
<pre wrap="">Adam Summers wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Tom & Widget Afficionados.
Thanks for the help so far.
My problem is now this:
From this code (which Tom supplied), how do I code the logic (in
bold)
def _toFieldValue(self, input):
data = super(ImageWidget, self)._toFieldValue(input)
if data is not None:
img = Image(data)
notify(ObjectCreatedEvent(img))
return img
*else: #data is None, ie. the File input field was left blank and we don't want to
#replace the current value of the Image Widget with an empty value.
currentImg = the Image object which the field is being rendered for
return currentImg
*
I can't rely on
field = self.context
image = field.get(field.context)
logic to find the data, because my schema can contain:
class Iclaim(IContained):
"""Claim"""
supDoc = List(title=_(u"Supporting Docs List"), value_type=Object(IImage, __name__='ImgItem', title=_(u"Image")))
img = Object(IImage, title=_(u"Single img"), required=False)
And hence, the self.context.context points to the claim object, not
the list inside when rendering supDoc
</pre>
</blockquote>
<pre wrap=""><!---->
Hi Adam,
You can rely on:
field = self.context
image = field.get(field.context)
because the widget is for an attribute object of type IImage.
Your supDoc attribute object is a List Type - not an IImage.
In this case you'd need another widget - for a list of IImage.
I wouldn't been too keen to tackle the html work effort and would
probably look at an alternative along the lines of...
class IImageList(IContainer):
contains(zope.app.image.interfaces.IImage)
class IClaim(IContained):
supDoc=Object(schema=IImageList)
Make supDoc traversable, then you wouldn't need the custom widget here
because you can store Images directly in supDoc view with the
browser:containerView's.
</pre>
</blockquote>
<br>
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