try079

Add negative scopes for all enum values
rails/rails#35381

app/models/child.rb

@@ -0,0 +1,3 @@
+class Child < ApplicationRecord
+  enum generation: %i[baby toddler preschool gradeschool teen young_adult] 
+end

db/migrate/20190831005217_create_children.rb

@@ -0,0 +1,10 @@
+class CreateChildren < ActiveRecord::Migration[6.0]
+  def change
+    create_table :children do |t|
+      t.string :name
+      t.integer :generation
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -0,0 +1,25 @@
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# This file is the source Rails uses to define your schema when running `rails
+# db:schema:load`. When creating a new database, `rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 2019_08_31_005217) do
+
+  # These are extensions that must be enabled in order to support this database
+  enable_extension "plpgsql"
+
+  create_table "children", force: :cascade do |t|
+    t.string "name"
+    t.integer "generation"
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+  end
+
+end

db/seeds.rb

@@ -1,7 +1,7 @@
-# This file should contain all the record creation needed to seed the database with its default values.
-# The data can then be loaded with the rails db:seed command (or created alongside the database with db:setup).
-#
-# Examples:
-#
-#   movies = Movie.create([{ name: 'Star Wars' }, { name: 'Lord of the Rings' }])
-#   Character.create(name: 'Luke', movie: movies.first)
+Child.create(
+  [
+    { name: 'Andy', generation: :baby },
+    { name: 'Bob', generation: :toddler },
+    { name: 'Cindy', generation: :preschool }
+  ]
+)

test/fixtures/children.yml

@@ -0,0 +1,9 @@
+# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  name: MyString
+  generation: 1
+
+two:
+  name: MyString
+  generation: 1

test/models/child_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class ChildTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end