[PHPTAL] Creating easy-to-write attribute values

[Laurent Bedubourg]

Werner wrote:
> Hi,
> 
> Here follows some sample template markup that illustrates a very common 
> templating task:
> 
> ...
> <img tal:attributes="src string:$myImgBaseUrl/pic.png" alt="My Pic With 
> A Difficult-To-Write Base Url"/>
> ...
> 
> Yet, I cannot find a way to make it more efficient and (obviously) 
> easier to mark-up for template designers. Can anyone help me find a way 
> to make it simpler, say, to achieve something like this...
> 
> ...
> <img tal:attributes="src myImgBaseUrl/pic.png" alt="My Pic With An 
> Easier-To-Write Base Url"/>
> ...
> 
> The above would easily work with a predefined object passed from PHP (so 
> that PHPTAL can resolve the 'object path'), but keep in mind that only 
> the template designers know the location (and filenames) of the page's 
> images. The designer only knows that he/she would like to put "pic.png" 
> in there, and I don't want to make it difficult for them to attach a 
> shared image base url path to the image's markup, since only the 
> developers know the base url of the public image paths.
> 
> Any groovy ideas?

I don't know if they are groovy but they can be used :


0. Ensuring that the public image path is the same as the dev one, no 
code involved

<img src="/img/pic.png" alt="bla bla"/>


1. Using a short notation (without tal:attributes)

<img src="${imgBaseUrl}/pic.png" alt="bla bla"/>


2. Using a custom expression

<img tal:attributes="src image:pic.png" alt="bla bla"/>
<img src="${image:pub.png}" alt="bla bla"/>

function phptal_tales_image($url){
	return "'http://data.mydomain.com/img/".$url."'";
}


3. Using a PHPTAL Input filter to transform every src="/img/(.*?)" into 
src="http://data.mydomain.com/img/$1"

<img src="/img/pic.png" alt="bla bla"/>


4. Any combinaison of above ideas but keep it simple !


I would recommand solutions 0 or 3 to make your designers happy :)

Regards
Laurent
-- 
Laurent Bedubourg
lbedubourg at motion-twin.com
http://www.motion-twin.com