FunctionClauseError: no function clause matching in Lightning.Projects.projects_for_user_query/1 about lightning

[stuartc]

This is an interesting one, because the router does correctly redirect users that don't have a session anymore - but it seems like the socket is still connected or at least the "request" is a LiveView request.

In InitAssigns we assume the user is logged in; because "hey that's handled upstream". And I'm not convinced that we should handle redirection there either.

However, the actual line where things break is:

def on_mount(:project_scope, %{"project_id" => project_id}, _session, socket) do
  %{current_user: current_user} = socket.assigns

  project = Lightning.Projects.get_project(project_id)

  projects = Lightning.Projects.get_projects_for_user(current_user) # <= HERE
  #...
end

I think there is quite a bit we can improve with our routing/on_mount hooks here.

But for now I think it would be ok for us to redirect inside the :project_scope hook, if there is no current_user on the socket. I'd recommend pattern matching for it in a clause above the current one.