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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 (e.g. 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?
546
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.
58
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