القائمة المنسدلة · النموذج

    <.form for={@form} phx-submit="save_phoenix">
  <.select
    class="select"
    field={@form[:country]}
    items={Corex.List.new([
      %{label: "France", value: "fra"},
      %{label: "Belgium", value: "bel"},
      %{label: "Germany", value: "deu"},
      %{label: "Netherlands", value: "nld"},
      %{label: "Switzerland", value: "che"},
      %{label: "Austria", value: "aut"}
    ])}
    translation={%Corex.Select.Translation{placeholder: "Select a country"}}
  >
    <:label>Country</:label>
    <:trigger>
      <.heroicon name="hero-chevron-down" class="icon" />
    </:trigger>
    <:error :let={msg}>
      <.heroicon name="hero-exclamation-circle" class="icon" />
      {msg}
    </:error>
  </.select>
  <.action type="submit" class="button button--accent">
    Submit
  </.action>
</.form>

  

    defmodule MyAppWeb.SelectFormLive do
  use MyAppWeb, :live_view

  def mount(_params, _session, socket) do
    phoenix_form =
      Phoenix.Component.to_form(%{"country" => ""}, as: :select_phoenix, id: "select-live-form-phoenix")

    {:ok, assign(socket, :phoenix_form, phoenix_form)}
  end

  def handle_event("save_phoenix", %{"select_phoenix" => params}, socket) do
    country = params["country"] || ""

    {:noreply,
     assign(
       socket,
       :phoenix_form,
       Phoenix.Component.to_form(%{"country" => country}, as: :select_phoenix, id: "select-live-form-phoenix")
     )}
  end
end

  

    <.form
  for={@form}
 
  phx-change="validate_strict"
  phx-submit="save_strict"
>
  <.select
    class="select"
    field={@form[:country]}
    items={Corex.List.new([
      %{label: "France", value: "fra"},
      %{label: "Belgium", value: "bel"},
      %{label: "Germany", value: "deu"},
      %{label: "Netherlands", value: "nld"},
      %{label: "Switzerland", value: "che"},
      %{label: "Austria", value: "aut"}
    ])}
    translation={%Corex.Select.Translation{placeholder: "Select a country"}}
    on_value_change="select_country_changed_strict"
  >
    <:label>Country</:label>
    <:trigger>
      <.heroicon name="hero-chevron-down" class="icon" />
    </:trigger>
    <:error :let={msg}>
      <.heroicon name="hero-exclamation-circle" class="icon" />
      {msg}
    </:error>
  </.select>
  <.action type="submit" class="button button--accent">
    Submit
  </.action>
</.form>

  

    defmodule MyAppWeb.SelectFormLive do
  use MyAppWeb, :live_view

  def mount(_params, _session, socket) do
    ecto_form =
      %MyApp.Forms.CountryForm{}
      |> MyApp.Forms.CountryForm.changeset_validate(%{})
      |> Phoenix.Component.to_form(as: :select_ecto, id: "select-live-form-ecto")

    {:ok, assign(socket, :ecto_form, ecto_form)}
  end

  def handle_event("select_country_changed", %{"value" => value}, socket) do
    country = List.first(value) || ""
    validate_ecto(socket, %{"country" => country})
  end

  def handle_event("validate", %{"select_ecto" => params}, socket) do
    validate_ecto(socket, params)
  end

  def handle_event("save", %{"select_ecto" => params}, socket) do
    case MyApp.Forms.CountryForm.changeset_validate(%MyApp.Forms.CountryForm{}, params) do
      %Ecto.Changeset{valid?: true} = changeset ->
        _data = Ecto.Changeset.apply_changes(changeset)

        {:noreply,
         assign(
           socket,
           :ecto_form,
           Phoenix.Component.to_form(
             MyApp.Forms.CountryForm.changeset_validate(%MyApp.Forms.CountryForm{}, params),
             as: :select_ecto,
             id: "select-live-form-ecto"
           )
         )}

      %Ecto.Changeset{} = changeset ->
        {:noreply,
         assign(
           socket,
           :ecto_form,
           Phoenix.Component.to_form(changeset, action: :insert, as: :select_ecto, id: "select-live-form-ecto")
         )}
    end
  end

  defp validate_ecto(socket, params) do
    changeset =
      %MyApp.Forms.CountryForm{}
      |> MyApp.Forms.CountryForm.changeset_validate(params)
      |> Map.put(:action, :validate)

    {:noreply,
     assign(
       socket,
       :ecto_form,
       Phoenix.Component.to_form(changeset, action: :validate, as: :select_ecto, id: "select-live-form-ecto")
     )}
  end
end

  

    defmodule MyApp.Forms.CountryForm do
  use Ecto.Schema
  import Ecto.Changeset

  embedded_schema do
    field :country, :string
  end

  def changeset(form, attrs \\ %{}) do
    form
    |> cast(attrs, [:country])
    |> validate_required([:country])
  end

  def changeset_validate(form, attrs \\ %{}) do
    form
    |> cast(attrs, [:country])
    |> validate_required([:country], message: "can't be blank")
  end
end