Merge pull request #640 from sgmap/clean_assign_to_duplicates

Clean assign_to duplicates

db/migrate/20170801083632_add_id_to_assign_to.rb

@@ -0,0 +1,5 @@
+class AddIdToAssignTo < ActiveRecord::Migration[5.0]
+  def change
+    add_column :assign_tos, :id, :primary_key
+  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: 20170713151123) do
+ActiveRecord::Schema.define(version: 20170801083632) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -64,7 +64,7 @@ ActiveRecord::Schema.define(version: 20170713151123) do
     t.datetime "updated_at", null: false
   end
 
-  create_table "assign_tos", id: false, force: :cascade do |t|
+  create_table "assign_tos", force: :cascade do |t|
     t.integer "gestionnaire_id"
     t.integer "procedure_id"
     t.index ["gestionnaire_id"], name: "index_assign_tos_on_gestionnaire_id", using: :btree

lib/tasks/2017_08_01_clean_assign_to.rake

@@ -0,0 +1,12 @@
+namespace :'2017_08_01_clean_assign_to' do
+  task clean: :environment do
+    duplicates = AssignTo.group(:gestionnaire_id, :procedure_id).count.select{ |_gestionnaire_id_procedure_id, count| count > 1 }.keys
+
+    duplicate_ids = duplicates.map { |gestionnaire_id, procedure_id| AssignTo.where(gestionnaire_id: gestionnaire_id, procedure_id: procedure_id).pluck(:id) }
+
+    duplicate_ids.each do |ids|
+      ids.pop
+      AssignTo.where(id: ids).destroy_all
+    end
+  end
+end