Fix issue with index on Search names for PostgreSQL (#287)

* Make postgres as default False with INDEX_SEARCH_NAMES

* docs

* QA modifications and TODO

* qa

* qa

* qa

* qa

* W503 fix for qa

Author: marianoeramirez

README.rst

@@ -168,6 +168,13 @@ If you want to build the docs, use the following steps::
     cd docs
     make html
 
+TODOS
+-----
+
+- Add ruff for formatting
+- Improve the performance of the import command
+- Improve the local development environment with https://tox.wiki/en/legacy/example/devenv.html
+
 Resources
 ---------
 

src/cities_light/settings.py

@@ -83,11 +83,18 @@
 
 .. py:data:: INDEX_SEARCH_NAMES
 
-    If your database engine for cities_light supports indexing TextFields (ie.
-    it is **not** MySQL), then this should be set to True. You might have to
+    If your database engine for cities_light supports indexing TextFields,
+    then this should be set to True. You might have to
     override this setting with ``settings.CITIES_LIGHT_INDEX_SEARCH_NAMES`` if
     using several databases for your project.
 
+    Notes:
+    - MySQL doesn't support indexing TextFields.
+    - PostgreSQL supports indexing TextFields, but it is not enabled by default
+      in cities_light because the lenght of the field can be too long for btree
+      for more information please visit #273
+
+
 .. py:data:: CITIES_LIGHT_APP_NAME
 
     Modify it only if you want to define your custom cities models, that
@@ -147,7 +154,9 @@
 if INDEX_SEARCH_NAMES is None:
     INDEX_SEARCH_NAMES = True
     for database in list(settings.DATABASES.values()):
-        if "ENGINE" in database and 'mysql' in database.get('ENGINE').lower():
+        if "ENGINE" in database and (
+                'mysql' in database.get('ENGINE').lower() or
+                'postgresql' in database.get('ENGINE').lower()):
             INDEX_SEARCH_NAMES = False
 
 DEFAULT_APP_NAME = 'cities_light'

tox.ini

@@ -85,7 +85,7 @@ passenv =
 
 [testenv:checkqa]
 basepython = python3.8
-commands = pycodestyle --ignore=E402,E124,E128 --exclude=tests,migrations src/cities_light
+commands = pycodestyle --ignore=E402,E124,E128,W503,W504 --exclude=tests,migrations src/cities_light
 deps = pycodestyle
 
 [testenv:pylint]