Using plugs to synchronize child and parent templates

Hello! I have been trying to follow stackoverflow to sync elements in two different templates. I came up with the code below as part of this, but get the following compiler error:

== Compilation error on file lib/plugs.ex ==
** (CompileError) lib/plugs.ex:8: undefined function assign/3

Here is the code:

defmodule LookupPhoenix.Plug.Site do

  def init(default), do: default

  def call(conn, opts) do
    assign conn, :site,  Keyword.get(opts, :site)


And here is how I call it:

plug LookupPhoenix.Plug.Site, site: site


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You are not importing assign, just need to import the correct module that defines it (Plug.Conn maybe). :slight_smile:

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It compiles now!