How to use path_prefixes in Phoenix.VefifiedRoutes for dynamic routers in 1.18?

Phoenix Forum Questions / Help
1

Hello Folks,

How to use Phoenix VefifiedRoutes path_prefixes (Phoenix.VerifiedRoutes — Phoenix v1.8.0-rc.4), when i try something like that on my MyAppWeb like:

  def verified_routes do
    quote do
      use Phoenix.VerifiedRoutes,
        endpoint: MyAppWeb.Endpoint,
        router: MyAppWeb.Router,
        statics: MyAppWeb.static_paths(),
        path_prefixes: [{MyApp.Tenant, :get_path, [@tenant]}]
    end
  end

but the static path lost the host part or add two slashs in prefix and can’t render.
and the @tenant is not understand by the code…

i need some routes like, http://sub.myurl.com/tenant/ ← when the tenant is dynamic
in almost all routes.

2

To do this, you’ll need to store the tenant in the process dictionary

defmodule MyApp.Tenant do
  @tenant_key {__MODULE__, :tenant_id}
  def put_tenant_id(tenant_id) do
    Process.put(@tenant_key, tenant_id)
  end

  def get_tenant_id() do
    Process.get(@tenant_key)
  end
end

def verified_routes do
  quote do
    use Phoenix.VerifiedRoutes,
      endpoint: MyAppWeb.Endpoint,
      router: MyAppWeb.Router,
      statics: MyAppWeb.static_paths(),
      path_prefixes: [{MyApp.Tenant, :get_tenant_id, []}]
  end
end

# Some session plug
def get_and_verify_tenant() do
  #tenant = get_tenant…
  MyApp.Tenant.put_tenant_id(tenant.id)
  #…
end

It can be tricky to work with if you also have “non-tenant” routes.
To deal with that, I still had a tenant_id scope

scope "/:tenant_id" do
  get "/user/log-in"
end

And then did Process.get(@tenant_key, "_") so I ended up with URLs like /_/user/log-in