group unread count

db/migrate/20190721214831_add_unread_count_to_group_accounts.rb

@@ -0,0 +1,5 @@
+class AddUnreadCountToGroupAccounts < ActiveRecord::Migration[5.2]
+  def change
+    add_column :group_accounts, :unread_count, :integer, default: 0
+  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: 2019_07_16_173227) do
+ActiveRecord::Schema.define(version: 2019_07_21_214831) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -327,6 +327,7 @@ ActiveRecord::Schema.define(version: 2019_07_16_173227) do
     t.string "role"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.integer "unread_count", default: 0
     t.index ["account_id", "group_id"], name: "index_group_accounts_on_account_id_and_group_id", unique: true
     t.index ["account_id"], name: "index_group_accounts_on_account_id"
     t.index ["group_id", "account_id"], name: "index_group_accounts_on_group_id_and_account_id"