How to access the current_user inside of my live_component?

djaouen · March 2, 2023, 11:24pm

I generated two sets of scaffolds: one for phx.gen.auth, and one for phx.gen.live for a model called Article. I am using Phoenix 1.7.0. I am trying to access the current_user inside of my live_component (which was generated by phx.gen.live). In particular, I have a reference field on my Article model that I am trying to assign to the current_user in new and edit actions in my form_component.ex file. How can I accomplish this?

BradS2S · March 2, 2023, 11:33pm

When you create the user you can add that to socket.assigns. A live component is on the same process as the live view so you should be able to access the state.

djaouen · March 2, 2023, 11:36pm

Where exactly do I add it to the assigns? I tried assigning it in the mount function of index.ex, but I still can’t seem to access it in the form_component.ex actions. Do I need to assign it in every endpoint along the way as well?

BradS2S · March 2, 2023, 11:39pm

Live components have a callback mount(socket)

github.com

phoenixframework/phoenix_live_view/blob/v0.18.16/lib/phoenix_live_component.ex#L462


      
              @before_compile Phoenix.LiveView.Renderer
          
          
    # Phoenix.Component must come last so its @before_compile runs last
              use Phoenix.Component, Keyword.take(unquote(opts), [:global_prefixes])
          
          
    @doc false
              def __live__, do: %{kind: :component, module: __MODULE__, layout: false}
            end
          end
          
          
@callback mount(socket :: Socket.t()) ::
                      {:ok, Socket.t()} | {:ok, Socket.t(), keyword()}
          
          
@callback preload(list_of_assigns :: [Socket.assigns()]) ::
                      list_of_assigns :: [Socket.assigns()]
          
          
@callback update(assigns :: Socket.assigns(), socket :: Socket.t()) ::
                      {:ok, Socket.t()}
          
          
@callback render(assigns :: Socket.assigns()) :: Phoenix.LiveView.Rendered.t()

djaouen · March 3, 2023, 12:01am

OK, figured it out. Thanks for your help!

BradS2S · March 3, 2023, 2:06am

Happy to help!