Live Form

    <.form for={@form} phx-submit="save_phoenix"
  class="flex flex-col gap-space-lg w-full max-w-xl"
>
  <.editable field={@form[:text]} placeholder="Enter text" activation_mode="dblclick" select_on_focus class="editable">
    <:label>Text</:label>
    <:edit_trigger><.heroicon name="hero-pencil-square" class="icon" /></:edit_trigger>
    <:submit_trigger><.heroicon name="hero-check" class="icon" /></:submit_trigger>
    <:cancel_trigger><.heroicon name="hero-x-mark" class="icon" /></:cancel_trigger>
    <:error :let={msg}>
      <.heroicon name="hero-exclamation-circle" class="icon" />
      {msg}
    </:error>
  </.editable>
  <.action type="submit" class="button ui-accent">Submit</.action>
</.form>

  

    defmodule MyAppWeb.EditableFormLive do
  use MyAppWeb, :live_view

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

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

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

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

  

    <.form for={@form} phx-change="validate" phx-submit="save"
  class="flex flex-col gap-space-lg w-full max-w-xl"
>
  <.editable field={@form[:text]} on_value_change="value_changed" placeholder="Enter text" activation_mode="dblclick" select_on_focus class="editable">
    <:label>Text</:label>
    <:error :let={msg}>
      <.heroicon name="hero-exclamation-circle" class="icon" />
      {msg}
    </:error>
    <:edit_trigger><.heroicon name="hero-pencil-square" class="icon" /></:edit_trigger>
    <:submit_trigger><.heroicon name="hero-check" class="icon" /></:submit_trigger>
    <:cancel_trigger><.heroicon name="hero-x-mark" class="icon" /></:cancel_trigger>
  </.editable>
  <.action type="submit" class="button ui-accent">Submit</.action>
</.form>

  

    defmodule MyAppWeb.EditableFormLive do
  use MyAppWeb, :live_view

  def mount(_params, _session, socket) do
    ecto_form =
      %MyApp.Form.EditableForm{}
      |> MyApp.Form.EditableForm.changeset(%{})
      |> Phoenix.Component.to_form(as: :editable_ecto, id: "editable-live-form-ecto")

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

  def handle_event("validate", event_params, socket) do
    params =
      Map.get(event_params, "editable_ecto") ||
        socket.assigns.ecto_form.params

    changeset =
      %MyApp.Form.EditableForm{}
      |> MyApp.Form.EditableForm.changeset(params)
      |> Map.put(:action, :validate)

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

  def handle_event("value_changed", %{"value" => value}, socket) do
    params = Map.merge(socket.assigns.ecto_form.params || %{}, %{"text" => to_string(value)})

    changeset =
      %MyApp.Form.EditableForm{}
      |> MyApp.Form.EditableForm.changeset(params)
      |> Map.put(:action, :validate)

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

  def handle_event("save", event_params, socket) do
    params =
      Map.get(event_params, "editable_ecto") ||
        socket.assigns.ecto_form.params

    case MyApp.Form.EditableForm.changeset(%MyApp.Form.EditableForm{}, params) do
      %Ecto.Changeset{valid?: true} = changeset ->
        _data = Ecto.Changeset.apply_changes(changeset)

        {:noreply,
         assign(
           socket,
           :ecto_form,
           Phoenix.Component.to_form(
             MyApp.Form.EditableForm.changeset(%MyApp.Form.EditableForm{}, params),
             as: :editable_ecto,
             id: "editable-live-form-ecto"
           )
         )}

      changeset ->
        {:noreply,
         assign(
           socket,
           :ecto_form,
           Phoenix.Component.to_form(changeset,
             action: :insert,
             as: :editable_ecto,
             id: "editable-live-form-ecto"
           )
         )}
    end
  end
end

  

    defmodule MyApp.Form.EditableForm do
  use Ecto.Schema
  import Ecto.Changeset

  embedded_schema do
    field :text, :string
  end

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