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Reimplementing Django Template Tags in Rust: Handling Context and Custom Tags

Bogdanp

9mo ago· 4 min readen

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Summary

The article discusses the technical challenges of reimplementing Django's templating language in Rust, specifically focusing on handling custom template tags and the context object that behaves like a Python dictionary. It provides code examples for simple template tags and explains how Django's context contains a list of dictionaries to manage variable scope during template rendering.

Key quotes

· 4 pulled

Django's templating language uses an object called a context to provide dynamic data to the template renderer

This mostly behaves like a Python dictionary

Django's context contains a list of dictionaries

This allows for temporarily changing the value of a variable, for example within a {% for %} loop, while keeping the original value

Snippet from the RSS feed

Background As part of my ongoing project to reimplement Django’s templating language in Rust, I have been adding support for custom template tags. Simple tags The simplest custom tag will look something like: # time_tags.py from datetime import date

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