CODEWITHSUNDEEP
file-uploadelixirphoenix-framework
Radz Singh
Radz Singh

Reputation: 78

undefined function cast_attachments/3

New to Elixir and Phoenix. Tried whatever I can do.
defmodule Countdown.Posts.Post do use Ecto.Schema import Ecto.Changeset schema "posts" do field :description, :string field :image, Countdown.PostUploader.Type field :shot, :naive_datetime field :title, :string timestamps() end @doc false def changeset(post, attrs) do post |> cast(attrs, [:title, :shot, :description, :image]) |> cast_attachments(params, [:image]) |> validate_required([:title, :shot, :description, :image]) end end

error:

== Compilation error in file lib/countdown/posts/post.ex == ** (CompileError) lib/countdown/posts/post.ex:19: undefined function cast_attachments/3 (stdlib) lists.erl:1338: :lists.foreach/2 (stdlib) erl_eval.erl:677: :erl_eval.do_apply/6 (elixir) lib/kernel/parallel_compiler.ex:198: anonymous fn/4 in Kernel.ParallelCompiler.spawn_workers/6

Upvotes: 1

Views: 595

Answers (1)

Igor Drozdov
Igor Drozdov

Reputation: 15045

As far as I understand, you're using arc_ecto to upload an image.

Then you might want to use Arc.Ecto.Schema to have the cast_attachments macro included: 

 defmodule Countdown.Posts.Post do
   use Ecto.Schema
   use Arc.Ecto.Schema
   import Ecto.Changeset

    schema "posts" do
      field :description, :string
      field :image, Countdown.PostUploader.Type
      field :shot, :naive_datetime
      field :title, :string
      timestamps()
    end

    @doc false
    def changeset(post, attrs) do
      post
      |> cast(attrs, [:title, :shot, :description, :image])
      |> cast_attachments(params, [:image])
      |> validate_required([:title, :shot, :description, :image])
  end
end

Upvotes: 1

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