"I have recently generated authorization using phx.gen and attempted to add an additional field to the table. Subsequently, I implemented a method to update this new field. Then I updated the registration form and added a new form to the settings page. Currently, all functionalities are working as expected, except for the part that allows updating the name.

When i submit form “name_form” i don’t get any errors, but when i look up the database data doesn’t seem to change, i tried using IO.inspect() (probably) everywhere and everything still seems fine.

Form:

    <div>
      <.simple_form
        for={@name_form}
          id="name_form"
          phx-submit="update_name"
          phx-change="validate_name"
        >
          <.input field={@name_form[:name]} type="text" label="Username" autocomplete="off" required />
          <:actions>
            <.button phx-disable-with="Changing...">Change username</.button>
          </:actions>
        </.simple_form>
      </div>

I have two event handlers, one for validation and the other for updating:

   def handle_event("validate_name", %{"user" => user_params}, socket) do
    name_form =
      socket.assigns.current_user
      |> Accounts.change_user_name(user_params)
      |> Map.put(:action, :validate)
      |> to_form()

    {:noreply, assign(socket, name_form: name_form)}
   end

   def handle_event("update_name", %{"user" => user_params}, socket) do
    user = socket.assigns.current_user

    case Accounts.apply_user_name(user, user_params, [validate_name: true]) do
      {:ok, _changeset} ->
        {:noreply, socket}

      {:error, changeset} ->
        {:noreply, assign(socket, :form, to_form(changeset))}
    end
   end

Accounts module, change_user_name returns an %Ecto.Changeset{} for changing the user name:

  def change_user_name(user, attrs \\ %{}, opts \\ []) do
    User.name_changeset(user, attrs, opts)
  end

  def apply_user_name(user, attrs, opts \\ []) do
    user
    |> User.name_changeset(attrs, opts)
    |> Ecto.Changeset.apply_action(:update)
  end

User module contains validate_name changeset which validates name and checks if name in unique:

  def validate_name(changeset, opts) do
    changeset
    |> validate_required([:name])
    |> validate_length(:name, min: 2, max: 36, message: "username must be between 2 and 36 characters")
    |> validate_format(:name, ~r/^[^\s]*$/, message: "cannot have a space at the end")
    |> maybe_validate_unique_name(opts)
  end

  def name_changeset(user, attrs \\ %{}, opts \\ []) do
    user
    |> cast(attrs, [:name])
    |> validate_name(opts)
    |> case do
      %{changes: %{name: _}} = changeset -> changeset
      %{} = changeset -> add_error(changeset, :name, "did not change")
    end
  end

  defp maybe_validate_unique_name(changeset, opts) do
    if Keyword.get(opts, :validate_name, true) do
      changeset
      |> unsafe_validate_unique(:name, Elixirlore.Repo)
      |> unique_constraint(:name)
    else
      changeset
    end
  end

I’d be very grateful for at least some indication where error may be located, thanks in advance.