[Zope] Re: Acquisition - I don't get it

[Jan Bruvoll]

Hi again,

forget it - I'm just being daft. Of course it works - had just moved the 
images around a little too much in my desperation.

Thanks for the update on the way the traversal works - everything's a 
little clearer now!

Best regards
Jan

Jan Bruvoll wrote:

> Hi Malcolm,
>
> thanks for your very quick reply.
>
> So - if I want to do it "my way", I'd have to write a quick python 
> method that does the searching for me, I presume.
>
> However, I already tried doing away with the folders and putting those 
> images directly into the folders, so that there are images across the 
> site like this:
>
> /top
> /top/site-title.gif
> /top/section1/
> /top/section1/section-title.gif
> /top/section1/chapter1
> /top/section1/chapter1/page-title.gif
> /top/section1/chapter1/paragraph1
> /top/section1/chapter1/paragraph1/page-title.gif
> ...
>
> It works in those folders where the relevant images actually are, but 
> the traversal does not kick in. Any pointers to this as well maybe?
>
> Thanks again
>
> Best regards
> Jan
>
>
> Malcolm Cleaton wrote:
>
>> Each element of the path is acquired in turn, and acquisition doesn't
>> backtrack when something cannot be found.
>>
>> So in this case, it starts at the current level and looks for "img", and
>> finds it. So far so good! Then, it starts from that img folder and looks
>> for your image "section_title.gif". It's not here! So, acquisition will
>> move on to search the parent of the img folder, and the parent of that,
>> and so on. Your section title image can't be found anywhere! Result: Not
>> found. At no point will the process backtrack and try other possible 
>> "img"
>> folders - when you say "img", you get the first one that can be 
>> acquired,
>> and then that's that.
>>
>> To acquire images in the way you describe, you would need to do away 
>> with
>> your "img" folders, and include the images directly in each folder in 
>> your
>> hierarchy.
>>
>> Thanks,
>> Malcolm.
>>
>>
>> On Mon, 31 Jan 2005 14:40:43 +0000, Jan Bruvoll wrote:
>>  
>>
>>> Hi there,
>>>
>>> I've been struggling with something that must be very basic, but I 
>>> just don't get it. Hopefully, there's somebody out there who could 
>>> enlighten me a little...
>>>
>>> I have this site hierarchy, something like this:
>>>
>>> /top
>>> /top/section1/
>>> /top/section1/chapter1
>>> /top/section1/chapter1/paragraph1
>>> /top/section1/chapter1/paragraph2
>>> /top/section1/chapter2
>>> /top/section1/chapter2/paragraph1
>>> /top/section2/
>>> /top/section2/chapter1
>>> /top/section2/chapter1/paragraph1
>>>
>>> etc.
>>>
>>> These are all folders with an index_html inside them. The template 
>>> will have, among other things, a site title image, a section title 
>>> image, and a page title image for each page.
>>>
>>> The idea here is to be able to create a folder img/ at appropriate 
>>> levels of this hierarchy and use images section_title.gif, 
>>> chapter_title.gif, page_title.gif, etc. This might be where I've 
>>> misunderstood everything, but I was hoping to do something like this:
>>>
>>> <img src="dummy.gif" class="title-img" tal:define="image 
>>> here/img/section_title.gif" tal:attributes="src image/absolute_url" />
>>>
>>> If for instance looking at one of the paragraph pages, the template 
>>> would then, in my perfect world, start looking for an "img/" folder 
>>> at the current level, and within it a file named 
>>> "section_title.gif", and if it does not find it, it will try again 
>>> one level up in the hierarchy, until it then finds the 
>>> section_title.gif in the folder /top/section1/img/section_title.gif. 
>>> Same goes for the other images, but they would "hit" further down in 
>>> the hierarchy so that I could effectively let a "closer" image 
>>> override one with the same name, but further up.
>>>
>>> Have I got it completely wrong? Is my thinking right, but my syntax 
>>> wrong? Haven't been able to get anywhere on this - all documentation 
>>> I can find gives hints and pointers, but I'm still stuck...
>>>
>>> Any help & comments highly appreciated!
>>>
>>> Best regards
>>> Jan
>>>   
>>