Chameleon templates for javascript files?

Question

I am developing a simple pyramid application where I am using JQuery to do AJAX requests. I have until now had my javascript code within my chameleon templates. Now I want to extract my javascript into another location (eg as static resources).

My problem is that I find my javascript code relies on dynamically generated content like so:

$.post("${request.route_url('my_view')}",{'data': 'some data'}, function(html){
    $("#destination").html(html);
});

The dynamic element being:

"${request.route_url('my_view')}"

Which is calling the route_url method of the request object within the template.

Is there a recognised pattern for separating such javascript files into their own templates and providing routes and views for them or do I simply keep my javascript in my page template?

Answer 1

Yes; you generally put context-specific information like expanded routes into the templates and access this information from your (static) JavaScript libraries.

Including the context info can be done in various ways, depending on taste:

You could use a data attribute on a tag in your generated HTML:
```
 <body data-viewurl="http://www.example.com/route/to/view"> ... </body> 
```
which you then, in your static JS code load with the jQuery .data() function :
```
 var viewurl = $('body').data('viewurl'); 
```
Use a made-up LINK tag relationship to include links in the document head:
```
 <head> <link rel="ajax-datasource" id="viewurl" href="http://www.example.com/route/to/view" /> ... </head> 
```
which can be retrieved using $('link#viewurl').attr('href') , or $('link[rel=ajax-datasource]').attr('href') . This only really works for URL information.
Generate JS variables straight in your template, to be referenced from your static code:
```
 <head> ... <script type="text/javascript"> window.contextVariables = { viewurl = "http://www.example.com/route/to/view", ... }; </script> </head> 
```
and these variables are referable directly with contextVariables.viewurl .

Chameleon templates for javascript files?

Question

1 answers

solution1
9 ACCPTED 2012-06-22 12:42:46

Chameleon templates for javascript files?

Question

1 answers

solution1 9 ACCPTED 2012-06-22 12:42:46

solution1
9 ACCPTED 2012-06-22 12:42:46