idempotent_create -> persist

app/controllers/filters_controller.rb

@@ -2,7 +2,7 @@ class FiltersController < ApplicationController
   before_action :set_filter, :remember_params, only: :destroy
 
   def create
-    @filter = Current.user.filters.idempotent_create!(filter_params).tap(&:touch)
+    @filter = Current.user.filters.persist! filter_params
     redirect_to bubbles_path(@filter.to_params)
   end
 

app/models/filter.rb

@@ -5,12 +5,12 @@ class Filter < ApplicationRecord
   has_one :account, through: :creator
 
   class << self
-    def idempotent_create!(attrs)
+    def persist!(attrs)
       filter = new(attrs)
       filter.save!
       filter
     rescue ActiveRecord::RecordNotUnique
-      find_by! params: filter.params # possible thanks to denormalized params
+      find_by!(params: filter.params).tap(&:touch) # possible thanks to denormalized params
     end
   end
 

test/models/filter_test.rb

@@ -1,10 +1,13 @@
 require "test_helper"
 
 class FilterTest < ActiveSupport::TestCase
-  test "idempotent creation" do
+  test "persistence" do
     assert_difference "Filter.count", +1 do
-      filter = users(:david).filters.idempotent_create!(indexed_by: "most_boosted")
-      assert_equal filter, users(:david).filters.idempotent_create!(indexed_by: "most_boosted")
+      filter = users(:david).filters.persist!(indexed_by: "most_boosted")
+
+      assert_changes "filter.reload.updated_at" do
+        assert_equal filter, users(:david).filters.persist!(indexed_by: "most_boosted")
+      end
     end
   end