mismatch template

[Cuong Truong]

I have a login_controller that renders index.html.drab in templates/login/ with this content:

<%= if @error !== nil do %>
    <p>
      <%= @error %>
    </p>
 <% end %>
<button drab-click="login"  type="button">Login</button>

I also defined the corresponding login_commander with simply:

defhandler login(socket, _sender) do
  poke socket, error: "Test error!"
end

When clicking the button, i got this error

[error] Drab Handler failed with the following exception:
** (Phoenix.Template.UndefinedError) Could not render "lib/tgshop_web/templates/layout/app.html" for TgshopWeb.LoginView, please define a matching clause for render/2 or define a template at "lib/tgshop_web/templates/login/*". The following templates were compiled:

* index.html

Assigns:

%{conn: %Plug.Conn{adapter: {Plug.MissingAdapter, :...}, assigns: %{}, before_send: [], body_params: %Plug.Conn.Unfetched{aspect: :body_params}, cookies: %Plug.Conn.Unfetched{aspect: :cookies}, halted: false, host: "www.example.com", method: "GET", owner: nil, params: %Plug.Conn.Unfetched{aspect: :params}, path_info: [], path_params: %{}, port: 0, private: %{phoenix_action: :index, phoenix_controller: TgshopWeb.LoginController, phoenix_endpoint: TgshopWeb.Endpoint}, query_params: %Plug.Conn.Unfetched{aspect: :query_params}, query_string: "", remote_ip: nil, req_cookies: %Plug.Conn.Unfetched{aspect: :cookies}, req_headers: [], request_path: "", resp_body: nil, resp_cookies: %{}, resp_headers: [{"cache-control", "max-age=0, private, must-revalidate"}], scheme: :http, script_name: [], secret_key_base: nil, state: :unset, status: nil}, error: "Test error!", view_module: TgshopWeb.LoginView, view_template: "lib/tgshop_web/templates/layout/app.html"}

Assigned keys: [:conn, :error, :view_module, :view_template]

    (phoenix 1.4.13) lib/phoenix/template.ex:341: Phoenix.Template.raise_template_not_found/3
    (phoenix 1.4.13) lib/phoenix/view.ex:410: Phoenix.View.render_to_iodata/3
    (phoenix 1.4.13) lib/phoenix/view.ex:417: Phoenix.View.render_to_string/3
    (drab 0.10.3) lib/drab/live.ex:692: Drab.Live.rerender_template/4
    (drab 0.10.3) lib/drab/live.ex:647: Drab.Live.process_poke/9
    (drab 0.10.3) lib/drab.ex:360: anonymous fn/7 in Drab.handle_event/6

What did I do wrong? Do I have to use mix drab.gen.commander Login instead of creating the files by hand?

[OvermindDL1]

Hmm, I'm still learning the internals of Drab's Live processing, so can you try a test for me, try changing your layout's app.html.eex to be app.html.drab and recompile all and see if that works then and tell me the result? If that doesn't work would you be able to replicate it in a new minimized project and give me a git link for it here? :-)

[Cuong Truong]

it is already app.html.drab :-) let me try to create a minimize project...

[OvermindDL1]

Yeah I'm quite curious now. ^.^

Thanks!

[Cuong Truong]

whatt? ok, it is weird that it works now when I changed app.html.drab to app.html.eex. So I guess you dont need the mini project after all?

[OvermindDL1]

Hmm, not weird, that actually might tell me what's going on. Go ahead and leave this open because that should still work regardless. If you want to make a minimized project I'd be very grateful though!

[Cuong Truong]

so, here is the mini project: drab_test
There are two issues with it:

• login handler only works if main layout is app.html.eex, fails when rename the layout to app.html.drab
• CSS is messed up when layout has .eex extension. When changing it back to app.html.drab, CSS looks nice again!

Thanks a lot 👍

[OvermindDL1]

Awesome! I'll look at it when I can, thanks so much!