How does template rendering work in Django?

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Template rendering in Django is the process of generating dynamic HTML by combining a template with context data from views. It follows the MVC (Model-View-Controller) pattern, where Django’s templates serve as the view layer.

Key Components:

  1. Templates: HTML files with placeholders using Django Template Language (DTL), like:

  2. Context: A dictionary passed from the view containing variables used in the template:

  3. Rendering Process:

    • The view receives a request.

    • It gathers data (often from models or forms).

    • It calls render(request, template_name, context) to combine the template and context.

    • Django uses its template engine to replace placeholders with actual values and returns an HttpResponse.

Template Features:

  • Tags for logic (e.g., {% if %}, {% for %})

  • Filters to modify output ({{ name|upper }})

  • Template inheritance for reusable layouts ({% extends "base.html" %})

Django separates logic from presentation, keeping code clean and maintainable. Templates are flexible and secure, automatically escaping variables to prevent XSS unless marked safe.

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