[stringtemplate-interest] How to send parameters from template

[George Pogorelschi]

You point is correct but in my case i can't compose the src in the 
template because the getSrc() method is actually a call to urlrewrite 
library (response.encodeUrl()) and it will transform the src string to a 
new string based on the urlrewrite configuration.

In my first example the getSrc() call for a string like 
"/media/product/?mediaId=10&width=140&height=140&name=some-seo-url" will 
return a seo enabled src string (eg. 
"/images/some-seo-url__10__140_140") that is configurable in the 
urlrewrite xml config file. This will allow the owner of the store to 
customize his SEO url's.

George Pogorelschi

Mobil (Vodafone): +40-788 43 67 43


On 4/8/2012 7:50 PM, Terence Parr wrote:
> Hi. Yeah,You cannot pass parameters to getters. no information from 
> the template is allowed to go back into the model without entangling 
> the model and the view. Looks to me like you're getSrc() has code that 
> is creating output, which defeats the purpose of ST. The rules of 
> strict separation suggested that no output characters can be computed 
> in the model.
>
> The view should not be trying to compute which one is selected for 
> your 2nd example. That is information that should be precomputed and 
> sent to the view.
> Ter
> On Apr 6, 2012, at 5:36 AM, George Pogorelschi wrote:
>
>> Hello,
>>
>> I'm trying to rewrite an online store front-end written in JSP using 
>> StringTemplate. Everything seems to be OK but there is something that 
>> I don't know how to implement it ST.
>>
>> Here are two examples of things I want to do:
>>
>> *1. Example A*
>> I'm generating the image url for products and because those images 
>> are placed in different places I need to sent the image width/height 
>> based on the location where the image is shown. For example the 
>> following code will show the item image on a specific page:
>>
>> <li id="productImages">
>> <div id="defaultImage">
>>                             $if(item.defaultImage.isAvailable)$
>> <a href="$item.defaultImage.url$" 
>> onclick="javascript:window.open('$item.defaultImage.url$','','scrollbars=no,menubar=no,height=725,width=850,resizable=no,toolbar=no,location=no,status=no'); 
>> event.preventDefault();" title="$item.seoTitle$">
>> <img src="$item.defaultImage.src$" width="$item.defaultImage.width$" 
>> height="$item.defaultImage.height$" alt="$item.seoTitle$" />
>> <img src="/images/zoom.png" class="zoom" alt="Zoom image - 
>> $item.seoTitle$" />
>> </a>
>>                             $else$
>> <!-- show empty image here -->
>>                             $endif$
>> </div>
>>                         $if(item.images)$
>> <ul class="thumbnailImages">
>>                             $item.images:{image|
>>                                 $if(!image.default)$
>> <li><a href="$image.url$" 
>> onclick="javascript:window.open('$image.url$','','scrollbars=no,menubar=no,height=725,width=850,resizable=no,toolbar=no,location=no,status=no'); 
>> event.preventDefault();" title="$item.seoTitle$">
>> <img src="$image.thumbnailSrc$" width="$image.thumbnailWidth$" 
>> height="$image.thumbnailHeight$" alt="$item.seoTitle$" /></a>
>> </li>
>>                                 $endif$
>>                             }$
>> </ul>
>>                         $endif$
>> </li>
>>
>> Because the image is automatically resized based on width/height 
>> parameters sent to the image url:
>>
>>     public String getSrc() {
>>         return response.encodeUrl(getImagePath() + "?mediaId=" + id + 
>> "&amp;width=" + getWidth() + "&amp;height=" + getHeight() + 
>> "&amp;name=" + getTitle());
>>     }
>>
>> What I want is to be able to sent the width/height parameters to the 
>> getSrc() method to leave the control of the image width/height to the 
>> html/web designer.
>>
>> *2. Example B*
>> I want to be able to identify witch option from the following select 
>> should be selected based on a parameter that is sent to back to the page:
>>
>> <span class="label">Show:</span>&nbsp;
>> <select name="itemsPerPage" class="modinput2" 
>> onchange="location='$category.itemsPerPageUrl$&amp;itemsPerPage=' + 
>> this.options[this.selectedIndex].value;">
>> <option value="10" selected="selected">10 items on page</option>
>> <option value="20">20 items on page</option>
>> <option value="30">30 items on page</option>
>> <option value="40">40 items on page</option>
>> <option value="50">50 items on page</option>
>> </select>
>> </span>
>>
>> The only solution that i'm thinking of could be a function that 
>> accept a parameter (number of items per page) and will return 
>> true/false if that parameter is equal with the value of the selected 
>> option. Something like this:
>>
>> $if(numberOfItems(20))$
>> <option value="20" selected="selected">20 items on page</option>
>> $else$
>> <option value="20">20 items on page</option>
>> $endif$
>>
>> I don't want to hard-code the number of items per page in code as I 
>> want to leave this control to the designer through HTML files.
>>
>> Any hints how I can use ST in this kind of situation?
>>
>> Thank you.
>> -- 
>>
>> George Pogorelschi
>>
>> Mobil (Vodafone): +40-788 43 67 43
>> _______________________________________________
>> stringtemplate-interest mailing list
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>
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