Add dotenv-rails gem

.env.example

@@ -0,0 +1,20 @@
+# Usage .env
+#   SAMPLE_VAR=XXXXXX
+#
+
+# DB
+SAY_DATABASE_USERNAME_DEV=
+SAY_DATABASE_PASSWORD_DEV=
+SAY_DATABASE_USERNAME=say
+SAY_DATABASE_PASSWORD=
+#SAY_DATABASE_HOSTNAME=
+
+#MYSQL_SOCKET=/var/lib/mysql/mysql.sock
+#REDIS_URL=
+
+## for production env
+# Secret
+#SECRET_KEY_BASE=
+
+# environments
+RAILS_LOG_LEVEL=debug

.gitignore

@@ -11,9 +11,7 @@ vendor/bundle
 # Ignore all environment files (except templates).
 /.env*
 !/.env*.erb
-
-# config
-config/database.yml
+!/.env.example
 
 # Ignore all logfiles and tempfiles.
 /log/*

Gemfile

@@ -6,12 +6,14 @@ gem "mysql2", "~> 0.5"
 
 gem "puma", ">= 5.0"
 
-gem "slim-rails"
-gem "jbuilder"
+gem "dotenv-rails"
 
 gem "sprockets-rails"
 gem "jsbundling-rails"
 
+gem "slim-rails"
+gem "jbuilder"
+
 gem "rack-cors"
 
 # Use Redis adapter to run Action Cable in production

Gemfile.lock

@@ -111,6 +111,10 @@ GEM
       irb (~> 1.10)
       reline (>= 0.3.8)
     diff-lcs (1.5.1)
+    dotenv (3.1.4)
+    dotenv-rails (3.1.4)
+      dotenv (= 3.1.4)
+      railties (>= 6.1)
     drb (2.2.1)
     erubi (1.13.0)
     factory_bot (6.5.0)
@@ -330,6 +334,7 @@ DEPENDENCIES
   capybara
   committee-rails
   debug
+  dotenv-rails
   factory_bot_rails
   foreman
   jbuilder

config/database.yml.example → config/database.yml

@@ -13,20 +13,23 @@ default: &default
   adapter: mysql2
   encoding: utf8
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
-  username: root
-  password:
-  socket: /tmp/mysql.sock
+  socket: <%= ENV['MYSQL_SOCKET'] %>
 
 development:
   <<: *default
   database: say_development
+  username: <%= ENV['SAY_DATABASE_USERNAME_DEV'] %>
+  password: <%= ENV['SAY_DATABASE_PASSWORD_DEV'] %>
 
 # Warning: The database defined as "test" will be erased and
 # re-generated from your development database when you run "rake".
 # Do not set this db to the same as development or production.
 test:
   <<: *default
   database: say_test
+  username: <%= ENV['SAY_DATABASE_USERNAME_DEV'] %>
+  password: <%= ENV['SAY_DATABASE_PASSWORD_DEV'] %>
+  host: <%= ENV['SAY_DATABASE_HOSTNAME'] %> # for CI
 
 # As with config/credentials.yml, you never want to store sensitive information,
 # like your database password, in your source code. If your source code is
@@ -51,5 +54,5 @@ test:
 production:
   <<: *default
   database: say_production
-  username: say
+  username: <%= ENV['SAY_DATABASE_USERNAME'] %>
   password: <%= ENV['SAY_DATABASE_PASSWORD'] %>