Why is variable not visible inside if in django template?

Question

Django

I have a list of categories and a category id that are passed to a template. I need to display the title of the corresponding category on the page, but for some reason the comparison inside the for loop does not work. The if variable is not visible, but it is visible in the loop.

{% block content %}
<div class="wrapper">
  {% for c in categories %}
    <h1 class="title">
      {% if c.category_no = id %}
        {{c.name}}
      {% endif %}
    </h1>
  {% endfor %}
</div>
{% endblock content %}

Answer 1

There is no comparison in the code you provided. There is an assignment of the id variable to the category_no attribute.