Strategies for Structuring Django and JavaScript Codebases

I'm grappling with the best way to structure my javascript and django code.

Previously, I would include my page-specific javascript directly in the template file within a <script> tag. However, as my javascript code grew, this approach led to a messy situation:
- Mixing django template variables {{var}} within my JS code made it less readable,
- I encountered errors when attempting to minify the code using tools like ,
- Overall, I felt the need to separate my JS and Django code more effectively.

Currently, my embedded <script> tag contains JS code like this:

var app = {
  func: function() {
    // Can I use the {% url %} tag here?
    $.post('/url/', {csrfmiddlewaretoken:'{{csrf_token}}', something:'value'} )
  },
  jsonFromServer: '{{pythonDict|safe}}', // This data structure is essential,
};

There are specific values that need to be passed from Django to JavaScript, such as the csrftoken for ajax requests and sometimes a json dictionary required by the app itself. Occasionally, I may need to pass the server time as well.

I'm contemplating moving the JS code to a separate file as I've heard it's a better organizational practice. However, I'm unsure how to achieve this in a standard Django application without having Django render the .js files. I also prefer not to have Django serve the JS file directly. How can I structure my JS code to minimize the amount of Django-specific code within it?

Answer №1

I’m not sure if I would call it "beautiful," but typically, I structure my code like this when working on web development in MVC:

  • I place my <script> tag in the template of my page.
  • I write my JavaScript in an external file, usually located in /static/JS/my_template_name.js.
  • Since my global layout may also contain some JavaScript code, I take advantage of JavaScript modules. Here’s a helpful article on the topic:

Answer №2

Typically, I avoid doing that. When I require data from the server in my JavaScript code, I opt for making Ajax calls.

However, if you insist on proceeding in that manner, I can recommend the following approach within your template:

<script>
     var dataFromServer = {{data_from_server}};
</script>

Usually, when you provide a variable named data_from_server to your template, it will replace the placeholder within the script tags. Just ensure to format "data_from_server" correctly in JavaScript.

Subsequently, you can access your data in your scripts by referencing the dataFromServer variable from anywhere within the code.

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