fix: allow prefixing the link paths

Author: yordis

dev.exs

@@ -456,6 +456,13 @@ defmodule DemoWeb.Router do
   use Phoenix.Router
   import Phoenix.LiveDashboard.Router
 
+  forward "/admin", DemoWeb.Router.Admin
+end
+
+defmodule DemoWeb.Router.Admin do
+  use Phoenix.Router
+  import Phoenix.LiveDashboard.Router
+
   pipeline :browser do
     plug :fetch_session
     plug :protect_from_forgery
@@ -470,6 +477,8 @@ defmodule DemoWeb.Router do
     get "/hello/:name", DemoWeb.PageController, :hello
 
     live_dashboard("/dashboard",
+      live_socket_path: "/live",
+      path_prefix: "/admin",
       env_keys: ["USER", "ROOTDIR"],
       metrics: DemoWeb.Telemetry,
       metrics_history: {DemoWeb.History, :data, []},
@@ -518,7 +527,7 @@ defmodule DemoWeb.Endpoint do
     same_site: "Lax"
   ]
 
-  socket "/live", Phoenix.LiveView.Socket, websocket: [connect_info: [session: @session_options]]
+  socket "/admin/live", Phoenix.LiveView.Socket, websocket: [connect_info: [session: @session_options]]
   socket "/phoenix/live_reload/socket", Phoenix.LiveReloader.Socket
 
   plug Phoenix.LiveReloader

lib/phoenix/live_dashboard/page_builder.ex

@@ -96,7 +96,7 @@ defmodule Phoenix.LiveDashboard.PageBuilder do
 
   We currently support `card/1`, `fields_card/1`, `row/1`,
   `shared_usage_card/1`, and `usage_card/1`;
-  and the live components `live_layered_graph/1`, `live_nav_bar/1`, 
+  and the live components `live_layered_graph/1`, `live_nav_bar/1`,
   and `live_table/1`.
 
   ## Helpers
@@ -956,7 +956,9 @@ defmodule Phoenix.LiveDashboard.PageBuilder do
   def live_dashboard_path(socket, route, node, old_params, new_params) when is_atom(node) do
     if function_exported?(socket.router, :__live_dashboard_prefix__, 0) do
       new_params = for {key, val} <- new_params, key not in ~w(page node), do: {key, val}
-      prefix = socket.router.__live_dashboard_prefix__()
+      prefix = socket.router.__live_dashboard_prefix__() |> dbg()
+      # broken due to redirecting in a loop
+      prefix = socket.router.__live_dashboard_path_prefix__() |> dbg()
 
       path =
         if node == node() and is_nil(old_params["node"]) do

lib/phoenix/live_dashboard/router.ex

@@ -97,6 +97,8 @@ defmodule Phoenix.LiveDashboard.Router do
         opts
       end
 
+    route_path_prefix = Keyword.get(opts, :path_prefix, "") <> path
+
     scope =
       quote bind_quoted: binding() do
         scope path, alias: false, as: false do
@@ -126,7 +128,9 @@ defmodule Phoenix.LiveDashboard.Router do
 
         unless Module.get_attribute(__MODULE__, :live_dashboard_prefix) do
           @live_dashboard_prefix Phoenix.Router.scoped_path(__MODULE__, path)
+          @live_dashboard_path_prefix Phoenix.Router.scoped_path(__MODULE__, route_path_prefix)
           def __live_dashboard_prefix__, do: @live_dashboard_prefix
+          def __live_dashboard_path_prefix__, do: @live_dashboard_path_prefix
         end
       end
     else