add homie to the gang when homie is created

db/migrate/20201007182916_add_name_to_gangs.rb

@@ -0,0 +1,5 @@
+class AddNameToGangs < ActiveRecord::Migration[5.2]
+  def change
+    add_column :gangs, :name, :text
+  end
+end

db/migrate/20201007183139_add_gang_relation_to_homies.rb

@@ -0,0 +1,5 @@
+class AddGangRelationToHomies < ActiveRecord::Migration[5.2]
+  def change
+    add_reference :homies, :gang
+  end
+end

db/migrate/20201007213411_add_initial_gang_and_connect_to_homies.rb

@@ -0,0 +1,15 @@
+class AddInitialGangAndConnectToHomies < ActiveRecord::Migration[5.2]
+  def up
+    # execute "INSERT INTO gangs SELECT 'name' WHERE NOT EXISTS (SELECT * FROM gangs)"
+    if Gang.count.zero?
+      Gang.create.save
+    end
+    gang = Gang.first
+
+    Homie.all.update(gang: gang)
+  end
+
+  def down
+    Homie.all.update(gang: nil)
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_10_07_180902) do
+ActiveRecord::Schema.define(version: 2020_10_07_213411) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -43,6 +43,7 @@ ActiveRecord::Schema.define(version: 2020_10_07_180902) do
     t.integer "chip_scale"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.text "name"
   end
 
   create_table "homies", force: :cascade do |t|
@@ -51,6 +52,8 @@ ActiveRecord::Schema.define(version: 2020_10_07_180902) do
     t.text "about"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.bigint "gang_id"
+    t.index ["gang_id"], name: "index_homies_on_gang_id"
   end
 
   create_table "money_moves", force: :cascade do |t|