Add response templates model and table (#6615)

* Add response templates model and table

* Add missing factory oops

* Remove response templates on delete

* Remove moderator_id column from comments for now

* Use constants and add spec for response templates

app/models/response_template.rb

@@ -0,0 +1,17 @@
+class ResponseTemplate < ApplicationRecord
+  belongs_to :user, optional: true
+
+  UNIQUENESS_SCOPE = %i[user_id type_of content_type].freeze
+  TYPE_OF_TYPES = %w[personal_comment mod_comment abuse_report_reply email_reply].freeze
+  CONTENT_TYPES = %w[plain_text html body_markdown].freeze
+  COMMENT_CONTENT_TYPE = %w[body_markdown].freeze
+  COMMENT_VALIDATION_MSG = "Comment templates must use Markdown as its content type.".freeze
+
+  validates :type_of, :content_type, :content, :title, presence: true
+  validates :content, uniqueness: { scope: UNIQUENESS_SCOPE }
+  validates :type_of, inclusion: { in: TYPE_OF_TYPES }
+  validates :content_type, inclusion: { in: CONTENT_TYPES }
+  validates :content_type,
+            inclusion: { in: COMMENT_CONTENT_TYPE, message: COMMENT_VALIDATION_MSG },
+            if: -> { type_of&.include?("comment") }
+end

app/models/user.rb

@@ -48,6 +48,7 @@ class User < ApplicationRecord
   has_many :affected_feedback_messages, class_name: "FeedbackMessage", inverse_of: :affected, foreign_key: :affected_id, dependent: :nullify
 
   has_many :rating_votes, dependent: :destroy
+  has_many :response_templates, foreign_key: :user_id, inverse_of: :user, dependent: :destroy
   has_many :html_variants, dependent: :destroy
   has_many :page_views, dependent: :destroy
   has_many :credits, dependent: :destroy

app/services/users/delete_activity.rb

@@ -36,6 +36,7 @@ module Users
       user.pro_membership.delete if user.pro_membership.present?
       user.profile_pins.delete_all
       user.rating_votes.delete_all
+      user.response_templates.delete_all
       user.tweets.delete_all
       user.classified_listings.destroy_all
 

db/migrate/20200311170959_create_response_templates_table.rb

@@ -0,0 +1,15 @@
+class CreateResponseTemplatesTable < ActiveRecord::Migration[5.2]
+  def change
+    create_table :response_templates do |t|
+      t.string "type_of", null: false # abuse_report_reply, mod_comment, email_reply, personal_comment
+      t.string "content_type", null: false # body_markdown, plain_text, html
+      t.text "content", null: false
+      t.string "title", null: false
+      t.references :user, foreign_key: true # allow null for app wide usage of templates
+
+      t.timestamps null: false
+    end
+
+    add_index :response_templates, :type_of
+  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_03_08_144606) do
+ActiveRecord::Schema.define(version: 2020_03_11_170959) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -960,6 +960,18 @@ ActiveRecord::Schema.define(version: 2020_03_08_144606) do
     t.index ["user_id"], name: "index_reactions_on_user_id"
   end
 
+  create_table "response_templates", force: :cascade do |t|
+    t.text "content", null: false
+    t.string "content_type", null: false
+    t.datetime "created_at", null: false
+    t.string "title", null: false
+    t.string "type_of", null: false
+    t.datetime "updated_at", null: false
+    t.bigint "user_id"
+    t.index ["type_of"], name: "index_response_templates_on_type_of"
+    t.index ["user_id"], name: "index_response_templates_on_user_id"
+  end
+
   create_table "roles", id: :serial, force: :cascade do |t|
     t.datetime "created_at"
     t.string "name"
@@ -1303,6 +1315,7 @@ ActiveRecord::Schema.define(version: 2020_03_08_144606) do
   add_foreign_key "oauth_access_tokens", "users", column: "resource_owner_id"
   add_foreign_key "page_views", "articles", on_delete: :cascade
   add_foreign_key "podcasts", "users", column: "creator_id"
+  add_foreign_key "response_templates", "users"
   add_foreign_key "sponsorships", "organizations"
   add_foreign_key "sponsorships", "users"
   add_foreign_key "tag_adjustments", "articles", on_delete: :cascade

spec/factories/response_templates.rb

@@ -0,0 +1,10 @@
+FactoryBot.define do
+  factory :response_template do
+    sequence(:content) { |n| "#{Faker::Lorem.sentence}#{n}" }
+
+    user
+    type_of { "personal_comment" }
+    content_type { "body_markdown" }
+    title { generate :title }
+  end
+end

spec/models/response_template_spec.rb

@@ -0,0 +1,24 @@
+require "rails_helper"
+
+RSpec.describe ResponseTemplate, type: :model do
+  it { is_expected.to validate_inclusion_of(:type_of).in_array(ResponseTemplate::TYPE_OF_TYPES) }
+  it { is_expected.to validate_inclusion_of(:content_type).in_array(ResponseTemplate::CONTENT_TYPES) }
+
+  describe "comment content type validation" do
+    context "when the type of is a personal comment" do
+      it "validates that the content type is body markdown" do
+        response_template = build(:response_template, type_of: "personal_comment", content_type: "html")
+        expect(response_template.valid?).to eq false
+        expect(response_template.errors.messages[:content_type].to_sentence).to eq ResponseTemplate::COMMENT_VALIDATION_MSG
+      end
+    end
+
+    context "when the type of is a mod comment" do
+      it "validates that the content type is body markdown" do
+        response_template = build(:response_template, type_of: "mod_comment", content_type: "html")
+        expect(response_template.valid?).to eq false
+        expect(response_template.errors.messages[:content_type].to_sentence).to eq ResponseTemplate::COMMENT_VALIDATION_MSG
+      end
+    end
+  end
+end