Re: (Was Re: [Framework-Team] Minutes: 8 August 2009)

2009-08-06 Thread Wichert Akkerman

On 2009-8-6 06:30, David Glick wrote:

Does anyone know the background or justification for
http://dev.plone.org/old/archetypes/changeset/9318 where the switch to
an IPublishTraverse adapter first happened? Wichert?


The reasoning behind that is a) we want to get rid of __bobo_traverse__ 
methods and b) this change transparently exposes all image where the 
original code only hardcoded exposure of a field with the name 'iage'.


I don't quite see what the problem is with that code; can someone 
explain that?


Wichert.


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Re: (Was Re: [Framework-Team] Minutes: 8 August 2009)

2009-08-06 Thread Andreas Zeidler

On Aug 6, 2009, at 6:30 AM, David Glick wrote:

On Aug 5, 2009, at 1:45 PM, Alec Mitchell wrote:
On Wed, Aug 5, 2009 at 1:18 PM, David Glickdavidgl...@onenw.org  
wrote:
* IPublishTraverse is used where ITraverse should be; that's why  
some

linkintegrity tests are failing.


Actually they both need to be used.  And that's just a guess -- I  
haven't

actually looked at this yet.


It doesn't look like there's any way to override OFS traversal  
using a

component (other than a view of course).  Perhaps we should just be
using the existing custom __getitem__ that's already in
BaseObject/BaseFolder instead of traversal magic.


That seems like a decent idea to me, given that we need this to work  
for publish traversal, OFS traversal, and path expressions in order  
to avoid regressions.


i've just tested linkintegrity in a blob-enabled setup (in order to  
use the traversal adapter from `plone.app.imaging` in a known to work  
environment, i.e. plone 3.x) and it turns out that it still has 13  
failures — as opposed to the 25 currently seen in tests against plone  
4.0.  the remaining 12 failure are very likely due to the default  
mime-type issue (which in turn seems to be caused by the patch in https://bugs.launchpad.net/zope2/+bug/143948 
 — thanks to david for investigating, btw).


Does anyone know the background or justification for http://dev.plone.org/old/archetypes/changeset/9318 
 where the switch to an IPublishTraverse adapter first happened?   
Wichert?


since `p.a.blob` currently depends on `p.a.imaging`, which has the  
same traversal adapter as wichert introduced here, and image support  
will be required for the respective 4.0 plip, this needs to be fixed  
for linkintegrity to work again anyway.  iow, i'll try to look into it  
during the sprint...


Even if we use BaseObject's __getitem__, we probably ought to make  
the image scale lookup be adapter-based...I know that Andi has had  
plans to take advantage of the IPublishTraverse adapter in  
plone.app.imaging to override how scales are found (see http://svn.plone.org/svn/plone/plone.app.imaging/trunk/src/plone/app/imaging/traverse.py 
 -- but this ImageTraverser isn't actually registered anywhere yet).


those plans have long been carried out and the adapter is registered,  
in fact — see http://dev.plone.org/plone/changeset/27627 :)


cheers,


andi

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Re: (Was Re: [Framework-Team] Minutes: 8 August 2009)

2009-08-06 Thread Andreas Zeidler

On Aug 6, 2009, at 2:42 PM, Andreas Zeidler wrote:

On Aug 6, 2009, at 6:30 AM, David Glick wrote:

On Aug 5, 2009, at 1:45 PM, Alec Mitchell wrote:
On Wed, Aug 5, 2009 at 1:18 PM, David Glickdavidgl...@onenw.org  
wrote:
* IPublishTraverse is used where ITraverse should be; that's why  
some

linkintegrity tests are failing.


Actually they both need to be used.  And that's just a guess -- I  
haven't

actually looked at this yet.


It doesn't look like there's any way to override OFS traversal  
using a

component (other than a view of course).  Perhaps we should just be
using the existing custom __getitem__ that's already in
BaseObject/BaseFolder instead of traversal magic.


That seems like a decent idea to me, given that we need this to  
work for publish traversal, OFS traversal, and path expressions in  
order to avoid regressions.


i've just tested linkintegrity in a blob-enabled setup (in order to  
use the traversal adapter from `plone.app.imaging` in a known to  
work environment, i.e. plone 3.x) and it turns out that it still has  
13 failures [...]


btw, are there any other reasons/breakages besides the linkintegrity  
failures?  i suppose i could make the latter aware of the traversal  
adapter, too.  do we know of any (important) 3rd-party products that  
rely on being able to traverse to image scales the old way?



cheers,


andi


--
zeidler it consulting - http://zitc.de/ - i...@zitc.de
friedelstraße 31 - 12047 berlin - telefon +49 30 25563779
pgp key at http://zitc.de/pgp - http://wwwkeys.de.pgp.net/
plone 3.3rc4 released! -- http://plone.org/products/plone/



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Re: Image scale traversal (Was Re: [Framework-Team] Minutes: 8 August 2009)

2009-08-06 Thread David Glick

On Aug 6, 2009, at 5:42 AM, Andreas Zeidler wrote:
i've just tested linkintegrity in a blob-enabled setup (in order to  
use the traversal adapter from `plone.app.imaging` in a known to  
work environment, i.e. plone 3.x) and it turns out that it still has  
13 failures — as opposed to the 25 currently seen in tests against  
plone 4.0.  the remaining 12 failure are very likely due to the  
default mime-type issue (which in turn seems to be caused by the  
patch in https://bugs.launchpad.net/zope2/+bug/143948 — thanks to  
david for investigating, btw).


Were you using an svn checkout of linkintegrity?  I adjusted the tests  
last night to specify a 'text/html' mimetype where needed, so if  
you're using an svn checkout then the remaining failures are something  
else (unless I missed an occurrence or two).  Following my changes I  
was seeing 18 failures for linkintegrity with Plone 4.


From the investigating I've done so far, I think there are two main  
causes for the remaining failures:
- linkintegrity's getObjectsFromLinks method uses OFS traversal, which  
is not aware of IPublishTraverse adapters and therefore does not find  
image scales ... as I've been discussing here
- The linkintegrity tests try to trick the testrunner into not  
handling the LinkIntegrityNotificationException ... this is no longer  
working properly in Zope 2.12 for some reason.


Does anyone know the background or justification for http://dev.plone.org/old/archetypes/changeset/9318 
 where the switch to an IPublishTraverse adapter first happened?   
Wichert?


since `p.a.blob` currently depends on `p.a.imaging`, which has the  
same traversal adapter as wichert introduced here, and image  
support will be required for the respective 4.0 plip, this needs to  
be fixed for linkintegrity to work again anyway.  iow, i'll try to  
look into it during the sprint...


Yep.  That would be great.

Even if we use BaseObject's __getitem__, we probably ought to make  
the image scale lookup be adapter-based...I know that Andi has had  
plans to take advantage of the IPublishTraverse adapter in  
plone.app.imaging to override how scales are found (see http://svn.plone.org/svn/plone/plone.app.imaging/trunk/src/plone/app/imaging/traverse.py 
 -- but this ImageTraverser isn't actually registered anywhere yet).


those plans have long been carried out and the adapter is  
registered, in fact — see http://dev.plone.org/plone/changeset/ 
27627 :)



Ah, my bad...I didn't look carefully enough.

btw, are there any other reasons/breakages besides the linkintegrity  
failures?  i suppose i could make the latter aware of the traversal  
adapter, too.  do we know of any (important) 3rd-party products that  
rely on being able to traverse to image scales the old way?


I haven't tested, but I presume that anything which does something like
tal:block tal:condition=exists:context/image_thumb  
tal:replace=structure python:context.tag(scale='thumb')/

would break.


David Glick
Web Developer
ONE/Northwest

New tools and strategies for engaging people in protecting the  
environment


http://www.onenw.org
davidgl...@onenw.org
work: (206) 286-1235 x32
mobile: (206) 679-3833

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Re: Image scale traversal (Was Re: [Framework-Team] Minutes: 8 August 2009)

2009-08-06 Thread Andreas Zeidler

On Aug 6, 2009, at 5:47 PM, David Glick wrote:

On Aug 6, 2009, at 5:42 AM, Andreas Zeidler wrote:
i've just tested linkintegrity in a blob-enabled setup (in order to  
use the traversal adapter from `plone.app.imaging` in a known to  
work environment, i.e. plone 3.x) and it turns out that it still  
has 13 failures — as opposed to the 25 currently seen in tests  
against plone 4.0.  the remaining 12 failure are very likely due to  
the default mime-type issue (which in turn seems to be caused by  
the patch in https://bugs.launchpad.net/zope2/+bug/143948 — thanks  
to david for investigating, btw).


Were you using an svn checkout of linkintegrity?


yes, i was in fact.  but that doesn't matter since i was testing  
against 3.x anyway.  just with `plone.app.imaging` installed, i.e. the  
(same) traversal adapter enabled.


I adjusted the tests last night to specify a 'text/html' mimetype  
where needed,


we should not do this.  we should really fix the underlying issue  
instead of adjusting the tests to cover up...


so if you're using an svn checkout then the remaining failures are  
something else (unless I missed an occurrence or two).  Following my  
changes I was seeing 18 failures for linkintegrity with Plone 4.


hmm, you might have missed a few then.  just adding the traversal  
adapter seems to introduce 13 failures.  but 13 or 18, it definitely  
needs fixing... :)


From the investigating I've done so far, I think there are two main  
causes for the remaining failures:
- linkintegrity's getObjectsFromLinks method uses OFS traversal,  
which is not aware of IPublishTraverse adapters and therefore does  
not find image scales ... as I've been discussing here


right, but in this case i'd suggest fixing linkintegrity, since  
requiring something like image scales to be (aq-wrapped) sub-objects  
doesn't sound right anyway.


- The linkintegrity tests try to trick the testrunner into not  
handling the LinkIntegrityNotificationException ... this is no  
longer working properly in Zope 2.12 for some reason.


well, it was a bit of a hack anyway.  however, i think in one of the  
quick tests i did earlier setting ` browser.handleErrors = False`  
solved the issue.  i've got no idea why it would, but perhaps you  
wanna give it a try...  or i will :)


those plans have long been carried out and the adapter is  
registered, in fact — see http://dev.plone.org/plone/changeset/ 
27627 :)


Ah, my bad...I didn't look carefully enough.


i hid it away ;)

btw, are there any other reasons/breakages besides the  
linkintegrity failures?  i suppose i could make the latter aware of  
the traversal adapter, too.  do we know of any (important) 3rd- 
party products that rely on being able to traverse to image scales  
the old way?


I haven't tested, but I presume that anything which does something  
like
tal:block tal:condition=exists:context/image_thumb  
tal:replace=structure python:context.tag(scale='thumb')/

would break.


yes, it would, of course.  however, those should be trivial to fix  
provided we document it properly.  so since we'll need to make that  
change anyway — or say, we'd really like to — i'd be in favour of  
doing it now and avoid adding more magic workarounds to make it work  
both ways...



andi

--
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friedelstraße 31 - 12047 berlin - telefon +49 30 25563779
pgp key at http://zitc.de/pgp - http://wwwkeys.de.pgp.net/
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Re: (Was Re: [Framework-Team] Minutes: 8 August 2009)

2009-08-05 Thread David Glick

On Aug 5, 2009, at 1:45 PM, Alec Mitchell wrote:
On Wed, Aug 5, 2009 at 1:18 PM, David Glickdavidgl...@onenw.org  
wrote:
* IPublishTraverse is used where ITraverse should be; that's why  
some

 linkintegrity tests are failing.


Actually they both need to be used.  And that's just a guess -- I  
haven't

actually looked at this yet.


It doesn't look like there's any way to override OFS traversal using a
component (other than a view of course).  Perhaps we should just be
using the existing custom __getitem__ that's already in
BaseObject/BaseFolder instead of traversal magic.



That seems like a decent idea to me, given that we need this to work  
for publish traversal, OFS traversal, and path expressions in order to  
avoid regressions.


Does anyone know the background or justification for http://dev.plone.org/old/archetypes/changeset/9318 
 where the switch to an IPublishTraverse adapter first happened?   
Wichert?


Even if we use BaseObject's __getitem__, we probably ought to make the  
image scale lookup be adapter-based...I know that Andi has had plans  
to take advantage of the IPublishTraverse adapter in plone.app.imaging  
to override how scales are found (see http://svn.plone.org/svn/plone/plone.app.imaging/trunk/src/plone/app/imaging/traverse.py 
 -- but this ImageTraverser isn't actually registered anywhere yet).



David Glick
Web Developer
ONE/Northwest

New tools and strategies for engaging people in protecting the  
environment


http://www.onenw.org
davidgl...@onenw.org
work: (206) 286-1235 x32
mobile: (206) 679-3833

Subscribe to ONEList, our email newsletter!
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