Module that must be used in form types that uses Ecto.

Installation

Just add use Formex.Ecto.Type

Example

defmodule App.ArticleType do
  use Formex.Type
  use Formex.Ecto.Type

  def build_form(form) do
    form
    |> add(:title, :text_input, label: "Title")
    # ...
  end

  # optional
  def fields_casted_manually(_form) do
    # do some fields will be casted later?
    []
  end

  # optional
  def modify_changeset(changeset, form) do
    # Modify changeset. If you change some data here, it will be saved to database
    # You can also add validation rules here
    changeset
  end

Example with Arc.Ecto

defmodule App.ArticleType do
  # ...

  def build_form(form) do
    form
    |> add(:image, :file_input, label: "Image")
    # ...
  end

  # Arc.Ecto.cast_attachments doesn't work if we used Ecto.Changeset.cast/3 on :image
  # (Formex.Ecto.Changest does this automatically), therefore we must indicate that this field
  # will be casted manually
  def fields_casted_manually(_form) do
    [:image]
  end

  # manually use `Arc.Ecto.cast_attachment/3`
  def modify_changeset(changeset, _form) do
    changeset
    |> cast_attachments(changeset.params, [:image])
  end
end