Hello, I’m trying to make a simple multiple selection in an appointment form, so users don’t have to search the ID for a medic, normally I searched a lot on how to implement a multiple_select and carefully followed everything on many forums, but no one gets this error: no function clause matching i…

Oh, You should not use phoenix generator anymore, but phx

It’s not that easy without line numbers… But my guess is here &{&1.id, &1.nombre} You are sending integer to multiple_select instead of atom or binary. Try to replace with &{Integer.to_string(&1.id), &1.nombre}

First time using this forum, sorry about the lines. I tried replacing with your suggestion, but unfortunately it keeps giving me the same error.

No need to be sorry, I just meant it is not an obvious error :slight_smile: Does it works if You remove this? <div class="form-group"> <%= label f, :id_medico, class: "control-label" %> <%= multiple_select f, :medico, Enum.map(@medico, &{&1.id, &1.nombre}) %> <%= error_tag f, :id_med…

It doesn’t, I guess it has something to do with the query?

Also, if I do medico = Repo.all from u in Medico, select: {u.nombre} I get, no function clause matching in Keyword.delete_key/3 Although in both cases, it does get the values I want, but with these errors.

defmodule Medica.Medico do use Medica.Web, :model schema "medico" do field :nombre, :string field :apellido, :string field :especialidad, :string end @doc """ Builds a changeset based on the `struct` and `params`. """ def changeset(struct, params \\ %{}) do struct …

Yes, but what version of Phoenix do You use? model is outdated now

With Phoenix 1.3, it looks like this use Ecto.Schema import Ecto.Changeset

1.3.2, but decided to use: mix phoenix.new X instead of mix phx.new X this created the new model, but as requested we needed to use the old model.

Elixir Programming Language Forum

Error when trying to implement a multiple_select

Questions & Help Questions

kokolegorille June 4, 2018, 7:01am 7

Maybe You can show Medico schema file with the validation part.