[ZIZope] Re: [Plone-Users] how to interate ARFilePreview into RichDocument?
Yuri <[email protected]> Wed, 12 Dec 2007 13:52:39 +0100
| Newsgroups | gmane.comp.web.zope.italian,gmane.comp.web.zope.plone.user |
|---|---|
| Message-ID | <[email protected]> |
adam tang wrote:
> Hi Yuri,
> The method is very clever that you provided .But I still
> have trouble when apply it .
> The following is error information:
> ZopeXMLConfigurationError: File
> "/opt/Plone-2.5.3/zeocluster/client1/Products/ARFilePreview/configure.zcml",
> line 8.2-10.81
> ConfigurationError: ('Invalid value for', 'interface',
> 'ImportError: Module Products.ARFilePreview.interfaces has no global
> IPreviewAware in .interfaces.IPreviewAware
> zope.app.annotation.interfaces.IAttributeAnnotatable')
>
> I am using ARFilePreview 2.1.2 ,plone 2.5.3 and Five 1.4.2.
This error is because you didn't tell to Five that the object has the
interface and you didn't implemented it, see below.
But unrelated, I had to to it for work, so here a 99% solution :)
Basically, for simple File derived types, you've to do nothing after
you've installed ARFilepreview.
Just append @@preview_provider/getPreview to the url, so if your file is
http://mysite.com/files/myfile.pdf
the preview is:
http://mysite.com/files/myfile.pdf/@@preview_provider/getPreview
Maybe there are better ways to deal with it.
Note: appending don't preserve images so the right code to use in the
file template is:
<div style="position: relative;"
tal:content="structure here/@@preview_provider/getPreview" />
Back to RD:
By default, arfilepreviews already does it, so in richdocument you've
just to change the simpleattacchment widget (if using RD 3.0) to use the
arfilepreview macro instead of the file one the simpleattachmentfield one.
But before you've to tell five to give the preview to the
attachmentfield (I'm using RD 2):
in the product (i.e. RD) put a configure.zcml (or add the include and
implements part to the existing one, for example here EEPArticleNG is my
product):
<configure xmlns="http://namespaces.zope.org/zope"
xmlns:browser="http://namespaces.zope.org/browser"
xmlns:five="http://namespaces.zope.org/five">
<include package="zope.app.annotation" />
<five:implements
class="Products.EEPArticleNG.content.attachments.FileAttachment"
interface=".interfaces.eeparticleng.IPreviewAware
zope.app.annotation.interfaces.IAttributeAnnotatable" /
>
</configure>
But you've to implement the interface in the product, so add to
Products/EEPArticleNG/interfaces/eeparticleng.py (where I store my
interfaces in a very similar way to RD):
from zope.interface import Interface
from zope.app.event.interfaces import IObjectModifiedEvent
class IPreviewAware( Interface ):
""" marker interface """
class IPreviewable( Interface ):
def hasPreview( ):
"""
Has the preview
"""
def setPreview( preview):
"""
Sets the preview
"""
def getPreview( ):
"""
Get the preview
"""
class IPreviewProvider( Interface ):
def hasPreview( ):
"""
Has the preview
"""
def getPreview( ):
"""
Get the preview
"""
def updatePreview( ):
"""
update the preview by retransforming original file and store it
"""
def updateAllPreviews( ):
"""
update all the previews reachable from the catalog
"""
=======
Note :Maybe adding the interface in the container of the attachments is
wrong, but works!
Can someone explain why? (otherwise Five gives this error :
ZopeXMLConfigurationError: File
"/path/to//Products/EEPArticleNG/configure.zcml", line 8.2-10.81
ConfigurationError: ('Invalid value for', 'interface', 'ImportError:
Module Products.EEPArticleNG.interfaces has no global IPreviewAware in
.interfaces.IPreviewAware
zope.app.annotation.interfaces.IAttributeAnnotatable')
)
=======
then, in my widget, I had just to do:
<tal:related tal:repeat="item attachments">
<li tal:define="
desc item/Description;
item_type item/portal_type;
item_type_class python: 'contenttype-' +
putils.normalizeString(item_type);
item_wf_state item/review_state|python:
getInfoFor(item, 'review_state', '');
item_wf_state_class python: 'state-' +
putils.normalizeString(item_wf_state);
item_url item/getURL;">
<span tal:attributes="class item_type_class">
<a href="" target="_new" class="visualIconPadding"
tal:attributes="href string:${item_url};
title desc;"
tal:content="item/pretty_title_or_id">
Related Item
</a>
<!-- this is the real important part -->
| <a style="background-image: url(html_converted.gif);
background-repeat: no-repeat; background-position: left; " href=""
class="visualIconPadding"
tal:attributes="href
string:${item_url}/@@preview_provider/getPreview;
title desc;"
tal:content="string:${item/pretty_title_or_id}
as html">
Related Item
</a>
<!-- end -->
</span>
</li>
</tal:related>
then clicking on "myfile.pdf as html" it shows the preview.
====
Note 2: The only problem is the the preview don't give back the images
generated from the preview, as instead ATFile does, so I'm ccing atreal :)
the broken image url is:
http://mysite.com/bla-bla/myfile.pdf/@@preview_provider/myfile.pdf/@@preview_provider/myfile001.png.
In a ATFile is:
http://mysite.com/myfile.pdf/@@preview_provider/myfile001.png
so if I try:
http://mysite.com/bla-bla/myfile.pdf/@@preview_provider/myfile001.png
I can retrieve the image correctly from the preview of my custom RD.
Is my fault?
====
This shows how interfaces, annotation and other z3 technologies are cool
and how easy is to put the pieces toghether (mostly). :)
>
> Thanks a lot.
>
> 2007/12/11, Yuri <[email protected] <mailto:[email protected]>>:
>
> adam tang wrote:
> > Hi all,
> > The ARFilePreview is a great product for plone and the
> > RichDocument also is a great product .We very thank contributors of
> > the two products.
> > Now ,I want to interate ARFilePreview into
> RichDocument.
> > In the other word,use the ARFilePreview content type taking
> place of
> > Fileattachment of RD. But I have trouble with it.
> > I can upload the " ARFilePreview" docs into RD,and also
> > rename,move ,delete "ARFilePreview" attachment.But the index
> function
> > of " ARFilePreview" is invalid. I don't understand the index
> > mechanism of " ARFilePreview".So I need some help.
> >
> > Anyone any suggestions will be wellcome!
>
> well, ARFilePreview 2.2 "extend" the File portal type.
>
> <configure xmlns="http://namespaces.zope.org/zope"
> xmlns:browser=" http://namespaces.zope.org/browser"
> xmlns:five="http://namespaces.zope.org/five">
>
> <include package=" zope.annotation" />
>
>
> <five:implements class="Products.ATContentTypes.content.file.ATFile"
> interface=".interfaces.IPreviewAware
>
> zope.annotation.interfaces.IAttributeAnnotatable " />
>
>
> RD uses AttachmentField, and:
>
>
> class FileAttachment(ATFile):
> """A file attachment"""
> portal_type = meta_type = 'FileAttachment'
>
> registerType(FileAttachment)
>
> so all should be there, just use the "pieces" from arpreviewfile
> templates to display the preview in RD.
>
> >
> > --
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