[Fixed]-Build an includable template as string [django]

You are making this more complicated than it needs to be.

Firstly, it seems that the only reason you need this to be interpreted as a template is so that it parses the url tag. But there is already a way of creating links in Python code, and that is the reverse() function. You should use that instead.

Secondly, the way to dynamically generate content for use inside a template is to use a custom template tag.