Im new to elixir & phoenix and try to implement a tagging system inspired from this article: http://blog.plataformatec.com.br/2016/12/many-to-many-and-upserts/.
In the HTML form i use a text input where i enter comma separated keywords.
The new function with the form works fine.
def new(conn, _params, _current_user) do
changeset = Display.change_offer(%Offer{})
render(conn, "new.html", changeset: changeset)
end
But when i click on save with validation errors i get an error message
lists in Phoenix.HTML and templates may only contain integers representing bytes, binaries or other lists, got invalid entry: #Ecto.Changeset<action: :update, changes: %{}, errors: [], data: #MyApp.Display.Tags<>, valid?: true>
My create action looks like this:
def create(conn, %{"offer" => offer_params}, current_user) do
case Display.create_offer(current_user, offer_params) do
{:ok, offer} ->
conn
|> put_flash(:info, "Offer created successfully.")
|> redirect(to: Routes.offer_path(conn, :show, offer))
{:error, %Ecto.Changeset{} = changeset} ->
render(conn, "new.html", changeset: changeset)
end
end
I suppose that my text input field can not handle the data and i need some kind of view helper like
<%= text_input f, :tags, value: format_string(changeset.data.tags) %>
Can someone help me? It seems i just don’t get it working.
