Add rake database tasks:

  * `rake databases:recreate`
  * `rake databases:migrate_all`
  * `rake databases:cycle_database`

Author: reconstructions

db/migrate/20140823052830_create_comments.rb

@@ -1,4 +1,4 @@
-class CreateComments < ActiveRecord::Migration
+class CreateComments < ActiveRecord::Migration[5.0]
   def change
     create_table :comments do |t|
       t.string :author

db/migrate/20151015160035_set_default_for_author_and_text.rb

@@ -1,4 +1,4 @@
-class SetDefaultForAuthorAndText < ActiveRecord::Migration
+class SetDefaultForAuthorAndText < ActiveRecord::Migration[5.0]
   def up
     change_column_default(:comments, :author, "")
     change_column_default(:comments, :text, "")

db/migrate/20151015160334_change_author_and_text_to_not_null.rb

@@ -1,4 +1,4 @@
-class ChangeAuthorAndTextToNotNull < ActiveRecord::Migration
+class ChangeAuthorAndTextToNotNull < ActiveRecord::Migration[5.0]
   def change
     change_column_null(:comments, :author, false, "")
     change_column_null(:comments, :text, false, "")

db/schema.rb

@@ -15,11 +15,11 @@
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
-  create_table "comments", force: :cascade do |t|
-    t.string   "author",     default: "", null: false
-    t.text     "text",       default: "", null: false
-    t.datetime "created_at",              null: false
-    t.datetime "updated_at",              null: false
+  create_table "comments", id: :serial, force: :cascade do |t|
+    t.string "author", default: "", null: false
+    t.text "text", default: "", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
   end
 
 end

lib/tasks/databases.rake

@@ -0,0 +1,19 @@
+namespace :databases do
+  task :recreate do
+    puts Rainbow("\nRecreate Rails Databases:\n").blueviolet.bright.underline
+    sh "rake db:drop"
+    sh "rake db:create"
+  end
+
+  task :migrate_all do
+    puts Rainbow("\nRun Rails Migrations:\n").blueviolet.bright.underline
+    sh "rake db:migrate"
+    sh "rake db:migrate ENV=test"
+  end
+
+  task :cycle_database do
+    sh "rails db:environment:set RAILS_ENV=development"
+    Rake::Task["databases:recreate"].invoke
+    Rake::Task["databases:migrate_all"].invoke
+  end
+end