René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"when a record is destroyed make sure all \"reactivity\" is turned off during the update","articleBody":"For example this spec will fail:\r\n```ruby\r\n  context \"updating a has_many relationship\" do\r\n\r\n    before(:each) do\r\n\r\n      m = FactoryBot.create(:test_model, test_attribute: 'hello')\r\n      FactoryBot.create(:child_model, test_model: m)\r\n\r\n      mount \"TestComponent3\" do\r\n        class InnerComponent \u003c HyperComponent\r\n          param :child\r\n          render { LI { \"child id = #{@Child.id} #{@Child.test_model.test_attribute}\"} }\r\n        end\r\n        class TestComponent3 \u003c HyperComponent\r\n          render(OL) do\r\n            TestModel.all[0].child_models.each do |child|\r\n              InnerComponent(child: child)\r\n            end\r\n          end\r\n        end\r\n      end\r\n      page.should have_content('child id = 1')\r\n    end\r\n\r\n    it \"will update when sent from the server\" do\r\n      ChildModel.create(child_attribute: :foo, test_model: TestModel.find(1))\r\n      page.should have_content('child id = 2')\r\n      ChildModel.find(1).destroy\r\n      sleep 0.1 # necessary for poltergeist to work with pusher faker\r\n      page.should_not have_content('child id = 1', wait: 2)\r\n      page.should have_content('child id = 2')\r\n    end\r\nend\r\n```\r\nbecause `InnerComponent` accesses the child's `test_model`, which is set to nil when the child is destroyed (because we want to keep all the linkages nicely synchronized) but setting this to nil causes the component to re-rerender.  \r\n\r\nHere is a patch (not fully tested)\r\n\r\n```ruby\r\nmodule ReactiveRecord\r\n  class Base\r\n    alias destroy_associations_before_patch destroy_associations\r\n    def destroy_associations(*args, \u0026block)\r\n      @being_destroyed = true\r\n      destroy_associations_before_patch\r\n    end\r\n\r\n    alias change_status_and_notify_helper_before_patch change_status_and_notify_helper\r\n    def change_status_and_notify_helper(*args, \u0026block)\r\n      return if @being_destroyed\r\n      change_status_and_notify_helper_before_patch(*args, \u0026block)\r\n    end\r\n  end\r\nend\r\n```\r\n\r\nNote that simply wrapping the `destroy_associations` method with the `Base.loading` method will not work, as this will turn off notification for both sides of the relationship.  I.e. the has_many side will never re-render either, which it should.","author":{"url":"https://github.com/catmando","@type":"Person","name":"catmando"},"datePublished":"2019-06-12T20:42:37.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/195/hyperstack/issues/195"}