track forks

app/controllers/maps_controller.rb

@@ -124,7 +124,7 @@ class MapsController < ApplicationController
   end
 
   def create_map_params
-    params.permit(:name, :desc, :permission)
+    params.permit(:name, :desc, :permission, :source_id)
   end
 
   def update_map_params

app/models/map.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 class Map < ApplicationRecord
   belongs_to :user
+  belongs_to :source, class_name: :Map
 
   has_many :topicmappings, -> { Mapping.topicmapping }, class_name: :Mapping, dependent: :destroy
   has_many :synapsemappings, -> { Mapping.synapsemapping }, class_name: :Mapping, dependent: :destroy

db/migrate/20161218183817_add_source_to_maps.rb

@@ -0,0 +1,5 @@
+class AddSourceToMaps < ActiveRecord::Migration[5.0]
+  def change
+    add_reference :maps, :source, foreign_key: {to_table: :maps}
+  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: 20161216174257) do
+ActiveRecord::Schema.define(version: 20161218183817) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -151,6 +151,8 @@ ActiveRecord::Schema.define(version: 20161216174257) do
     t.string   "screenshot_content_type", limit: 255
     t.integer  "screenshot_file_size"
     t.datetime "screenshot_updated_at"
+    t.integer  "source_id"
+    t.index ["source_id"], name: "index_maps_on_source_id", using: :btree
     t.index ["user_id"], name: "index_maps_on_user_id", using: :btree
   end
 
@@ -340,5 +342,6 @@ ActiveRecord::Schema.define(version: 20161216174257) do
   add_foreign_key "mailboxer_notifications", "mailboxer_conversations", column: "conversation_id", name: "notifications_on_conversation_id"
   add_foreign_key "mailboxer_receipts", "mailboxer_notifications", column: "notification_id", name: "receipts_on_notification_id"
   add_foreign_key "mappings", "users", column: "updated_by_id"
+  add_foreign_key "maps", "maps", column: "source_id"
   add_foreign_key "tokens", "users"
 end

frontend/src/Metamaps/GlobalUI/CreateMap.js

@@ -61,6 +61,7 @@ const CreateMap = {
     if (GlobalUI.lightbox === 'forkmap') {
       self.newMap.set('topicsToMap', self.topicsToMap)
       self.newMap.set('synapsesToMap', self.synapsesToMap)
+      self.newMap.set('source_id', Active.Map.id)
     }
 
     var formId = GlobalUI.lightbox === 'forkmap' ? '#fork_map' : '#new_map'