pre-commit VS djhtml

Today we are going to look at how to setup Black (a python code formatter) and pre-commit (a package for handling git hooks in python) to automatically format you code on commit.

# See https://pre-commit.com for more information # See https://pre-commit.com/hooks.html for more hooks repos: - repo: https://github.com/pre-commit/pre-commit-hooks rev: v3.2.0 hooks: - id: trailing-whitespace - id: end-of-file-fixer - id: check-yaml - id: check-toml - id: check-added-large-files - repo: local hooks: - id: tox lint name: tox-validation entry: pdm run tox -e test,lint language: system files: ^src\/.+py$|pyproject.toml|^tests\/.+py$ types_or: [python, toml] pass_filenames: false - id: tox docs name: tox-docs language: system entry: pdm run tox -e docs types_or: [python, rst, toml] files: ^src\/.+py$|pyproject.toml|^docs\/ pass_filenames: false - repo: https://github.com/pdm-project/pdm rev: 2.10.4 # a PDM release exposing the hook hooks: - id: pdm-lock-check - repo: https://github.com/jumanjihouse/pre-commit-hooks rev: 3.0.0 hooks: - id: markdownlint

Pre-commit hooks act as the first line of defense in maintaining code quality, seamlessly integrating with linters and code formatters. They automatically execute these tools each time a developer tries to commit code to the repository, ensuring the code adheres to the project's standards. If the hooks detect issues, the commit is paused until the issues are resolved, guaranteeing that only code meeting quality standards makes it into the repository.

Pre-commit Hooks: Pre-commit is a tool that can be set up to enforce coding rules and standards before you commit your changes to your code repository. This ensures that you can't even check in (commit) code that doesn't meet your standards. This allows a code reviewer to focus on the architecture of a change while not wasting time with trivial style nitpicks.

Ah, fair enough!

On my team we use pre-commit[0] a lot. I guess I would define the history to be something like "has this commit ever been run through our pre-commit hooks?". If you rewrite history, you'll (usually) produce commits that have not been through pre-commit (and they've therefore dodged a lot of static checks that might catch code that wasn't working, at that point in time). That gives some manner of objectivity to the "history", although it does depend on each user having their pre-commit hooks activated in their local workspace.

[0]: https://pre-commit.com/

Pre-commit is a framework for managing and maintaining multi-language pre-commit hooks. It supports hooks for various programming languages. Using this framework, you only have to specify a list of hooks you want to run before every commit, and pre-commit handles the installation and execution of those hooks despite your project’s primary language.

You can learn more here: pre-commit.com

Note this includes support for pre-commit.

As a nice next step, you could also add mypy to check your type hints are consistent, and automate running all this via pre-commit hooks set up with… pre-commit.

We are happy to announce that DjHTML 3.0.0 has been released! This source code formatter for Django templates correctly indents mixed HTML/CSS/JS templates, including Django template tags, and can easily be used as a pre-commit hook to automatically indent Django templates on every commit.

~ djhtml -h usage: djhtml [-h] [-i] [-c] [-q] [-t N] [-o filename] [filenames ...] DjHTML is a fully automatic template indenter that works with mixed HTML/CSS/Javascript templates that contain Django or Jinja template tags. It works similar to other code-formatting tools such as Black and interoperates nicely with pre-commit. Full documentation can be found at https://github.com/rtts/djhtml positional arguments: filenames input filenames options: -h, --help show this help message and exit -i, --in-place modify files in-place -c, --check don't modify files -q, --quiet be quiet -t N, --tabwidth N tabwidth (default is 4) -o filename, --output-file filename output filename

Did you see this post a few hours ago https://www.reddit.com/r/django/comments/u1w400/linting_templates/ ? Someone suggested https://github.com/rtts/djhtml

For django templates I use djhtml: https://github.com/rtts/djhtml

https://github.com/rtts/djhtml is basic, but useful in the few things it does!

I actually wrote a tool that indents HTML files by parsing it using regexes: DjHTML

Update: the latest version of DjHTML now officially supports Jinja2!