Cast_assoc is null?

Magnet already has user_id no need cast assoc user. If you want to create magnet with user changeset cast_assoc(:magnet)

The user id is still null, it’s not adding anything

I added |> changeset cast_assoc(:magnet) but I get

function Magnify.Magnets.Magnet.search/2 is undefined (module Magnify.Magnets.Magnet is not available)

actually cast_assoc :user should work too but maybe belongs to tables doesn’t have that property

|> cast(attrs, [:title, :description, :content, :user_id # add this])

I just did that and tested,

6 is the new item

21%20PM1954×528 109 KB

Are you creating from html form or iex? Can you show code?

From html, is it possble that I have in the wrong place should this be in the controller?

Here is the form

<div class="card">
    <div class="card-body">
        <%= form_for @changeset, @action, fn f -> %>
            <%= if @changeset.action do %>
                <div class="alert alert-danger">
                    <p>Oops, something went wrong! Please check the errors below.</p>
                </div>
                <% end %>
                    <div class="form-group">
                        <%= label f, :title, class: "control-label" %>
                            <%= text_input f, :title, class: "form-control" %>
                                <%= error_tag f, :title %>
                    </div>

                    <div class="form-group">
                        <%= label f, :description, class: "control-label" %>
                            <%= text_input f, :description, class: "form-control" %>
                                <%= error_tag f, :description %>
                    </div>

                    <div class="form-group" style="display: block; height: 425px;">
                     <div id="editormd" data-read-only="false" data-line-numbers="true">
                        <%= label f, :content, class: "control-label" %>
                            <%= textarea f, :content, class: "" %>
                                <%= error_tag f, :content %>
                        </div>
                    </div>

    </div>
    <div class="card-actionbar">
        <div class="card-actionbar-row">
            <%= link dgettext("cancel", "Cancel"), to: magnet_path(@conn, :index), class: "btn btn-flat btn-default ink-reaction" %>
            <%= submit dgettext("submit", "Submit"), class: "btn btn-primary" %>
        </div>
    </div>
    <% end %>
</div>

And the schema

defmodule Magnify.Magnets.Magnet do
  use Ecto.Schema
  import Ecto.Changeset
  import Ecto.Query, only: [from: 2]


  schema "magnets" do
    field :content, :string
    field :description, :string
    field :title, :string
    belongs_to :user, Magnify.Coherence.User
    many_to_many :fluxes, Magnify.Magnets.Flux, join_through: "magnets_fluxes"

    timestamps()
  end

  @doc false
  def changeset(magnet, attrs) do
    magnet
    |> cast(attrs, [:title, :description, :content, :user_id])
    |> cast_assoc(:user)
    |> validate_required([:title, :description, :content,])
  end

  def search(query, search_term) do
    wildcard_search = "%#{search_term}%"

    from magnet in query,
         where: ilike(magnet.title, ^wildcard_search),
         or_where: ilike(magnet.description, ^wildcard_search)
  end

end

controller

def new(conn, _params) do
    changeset = Magnets.change_magnet(%Magnet{})
    render(conn, "new.html", changeset: changeset)
  end

  def create(conn, %{"magnet" => magnet_params}) do
    case Magnets.create_magnet(magnet_params) do
      {:ok, magnet} ->
        conn
        |> put_flash(:info, "Magnet created successfully.")
        |> redirect(to: magnet_path(conn, :show, magnet))
      {:error, %Ecto.Changeset{} = changeset} ->
        render(conn, "new.html", changeset: changeset)
    end
  end

Youd should update magnet_params from controller.

def create(conn, %{"magnet" => magnet_params}) do
 magnet_params = Map.put(magnet_params, "user_id",  conn.assigns.current_user.id)
    case Magnets.create_magnet(magnet_params) do
      {:ok, magnet} ->
        conn
        |> put_flash(:info, "Magnet created successfully.")
        |> redirect(to: magnet_path(conn, :show, magnet))
      {:error, %Ecto.Changeset{} = changeset} ->
        render(conn, "new.html", changeset: changeset)
    end

That code is wrong, getting a syntax error