postgresql versions are now selectable

CHANGELOG.md

@@ -2,6 +2,11 @@
 All enhancements and patches to Cookiecutter Django will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+##[2016-08-10]
+## Added
+- PostgreSQL versions are now selectable, instead of defaulting to 9.5; the minimum version is 9.2, which is supported by [Heroku](https://devcenter.heroku.com/articles/heroku-postgresql#version-support-and-legacy-infrastructure) and Django (@burhan)
+- Fixed minor issue in the README.rst (@burhan)
+
 ##[2016-08-03]
 ## Changed
 - Upgrade to Bootstrap 4 Alpha 3 and its dependencies, including jQuery (@audreyr)

README.rst

@@ -41,6 +41,7 @@ Features
 * Instructions for deploying to PythonAnywhere_
 * Works with Python 2.7.x or 3.5.x
 * Run tests with unittest or py.test
+* Customizable PostgreSQL version
 
 
 Optional Integrations
@@ -76,7 +77,7 @@ Constraints
 -----------
 
 * Only maintained 3rd party libraries are used.
-* Uses PostgreSQL everywhere (9.0+)
+* Uses PostgreSQL everywhere (9.2+)
 * Environment variables for configuration (This won't work with Apache/mod_wsgi).
 
 
@@ -125,6 +126,12 @@ Answer the prompts with your own desired options_. For example::
     use_docker [y]: n
     use_heroku [n]: y
     use_compressor [n]: y
+    Select postgresql_version:
+    1 - 9.2
+    2 - 9.3
+    3 - 9.4
+    4 - 9.5
+    Choose from 1, 2, 3, 4 [1]: 1
     Select js_task_runner:
     1 - Gulp
     2 - Grunt

cookiecutter.json

@@ -18,6 +18,7 @@
     "use_docker": "y",
     "use_heroku": "n",
     "use_compressor": "n",
+    "postgresql_version": ["9.2", "9.3", "9.4", "9.5"],
     "js_task_runner": ["Gulp", "Grunt", "Webpack", "None"],
     "use_lets_encrypt": "n",
     "open_source_license": ["MIT", "BSD", "GPLv3", "Apache Software License 2.0", "Not open source"]

{{cookiecutter.project_slug}}/app.json

@@ -27,7 +27,12 @@
     "postdeploy": "python manage.py migrate"
   },
   "addons": [
-    "heroku-postgresql:hobby-dev",
+    {
+      "plan": "heroku-postgresql:hobby-dev",
+      "options": {
+         "version": "{{ cookiecutter.postgresql_version }}"
+      }
+    },
     "heroku-redis:hobby-dev",
     "mailgun"
   ]

{{cookiecutter.project_slug}}/compose/postgres/Dockerfile

@@ -1,4 +1,4 @@
-FROM postgres:9.5
+FROM postgres:{{ cookiecutter.postgresql_version }}
 
 # add backup scripts
 ADD backup.sh /usr/local/bin/backup