Add pre-commit for the generated project. (#2171)

CONTRIBUTORS.rst

@@ -137,6 +137,7 @@ Listed in alphabetical order.
   Keyvan Mosharraf         `@keyvanm`_
   Krzysztof Szumny         `@noisy`_
   Krzysztof Żuraw          `@krzysztofzuraw`_
+  Leo won                  `@leollon`_
   Leo Zhou                 `@glasslion`_
   Leonardo Jimenez         `@xpostudio4`_
   Lin Xianyi               `@iynaix`_
@@ -291,6 +292,7 @@ Listed in alphabetical order.
 .. _@keyvanm: https://github.com/keyvanm
 .. _@knitatoms: https://github.com/knitatoms
 .. _@krzysztofzuraw: https://github.com/krzysztofzuraw
+.. _@leollon: https://github.com/leollon
 .. _@MathijsHoogland: https://github.com/MathijsHoogland
 .. _@mapx: https://github.com/mapx
 .. _@mattayes: https://github.com/mattayes

README.rst

@@ -53,6 +53,7 @@ Features
 * Instructions for deploying to PythonAnywhere_
 * Run tests with unittest or pytest
 * Customizable PostgreSQL version
+* Default integration with pre-commit_ for identifying simple issues before submission to code review
 
 .. _`maintained Foundation fork`: https://github.com/Parbhat/cookiecutter-django-foundation
 
@@ -84,6 +85,7 @@ Optional Integrations
 .. _PythonAnywhere: https://www.pythonanywhere.com/
 .. _Traefik: https://traefik.io/
 .. _LetsEncrypt: https://letsencrypt.org/
+.. _pre-commit: https://github.com/pre-commit/pre-commit 
 
 Constraints
 -----------

docs/developing-locally.rst

@@ -26,6 +26,12 @@ First things first.
 #. Install development requirements: ::
 
     $ pip install -r requirements/local.txt
+    $ pre-commit install
+
+     .. note::
+
+        the `pre-commit` exists in the generated project as default.
+        for the details of `pre-commit`, follow the [site of pre-commit](https://pre-commit.com/).
 
 #. Create a new PostgreSQL database using createdb_: ::
 

{{cookiecutter.project_slug}}/.pre-commit-config.yaml

@@ -0,0 +1,19 @@
+exclude: 'docs|node_modules|migrations|.git|.tox'
+default_stages: [commit]
+fail_fast: true
+
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: master
+    hooks:
+      - id: trailing-whitespace
+        files: (^|/)a/.+\.(py|html|sh|css|js)$
+
+-   repo: local
+    hooks:
+      - id: flake8
+        name: flake8
+        entry: flake8
+        language: python
+        types: [python]
+

{{cookiecutter.project_slug}}/requirements/local.txt

@@ -24,6 +24,7 @@ pylint-django==2.0.11  # https://github.com/PyCQA/pylint-django
 {%- if cookiecutter.use_celery == 'y' %}
 pylint-celery==0.3  # https://github.com/PyCQA/pylint-celery
 {%- endif %}
+pre-commit==1.20.0  # https://github.com/pre-commit/pre-commit
 
 # Django
 # ------------------------------------------------------------------------------