Error on migration

[Slavenin]

Hi!
My schema:

defmodule Sandbox.Api.Request do
  use Ecto.Schema
  import Ecto.Changeset


  schema "requests" do
    field :useragent, :string
    field :ip, EctoFields.IP
    timestamps()
  end

  @doc false
  def changeset(request, attrs) do
    request
    |> cast(attrs, [:useragent, :ip])
    |> validate_required([:useragent, :ip])
  end
end

Migration:

defmodule Sandbox.Repo.Migrations.CreateRequests do
  use Ecto.Migration

  def change do
    create table(:requests) do
      add :useragent, :text
      add :ip, EctoFields.IP
      timestamps()
    end

  end
end

But on mix ecto migrate

info] == Running Sandbox.Repo.Migrations.CreateRequests.change/0 forward
** (ArgumentError) EctoFields.IP is not a valid database type, please use an atom like :string, :text and so on
    (ecto) lib/ecto/migration.ex:892: Ecto.Migration.validate_type!/1
    (ecto) lib/ecto/migration.ex:687: Ecto.Migration.add/3
    priv/repo/migrations/20180601072733_create_requests.exs:7: Sandbox.Repo.Migrations.CreateRequests.change/0
    (stdlib) timer.erl:197: :timer.tc/3
    (ecto) lib/ecto/migration/runner.ex:25: Ecto.Migration.Runner.run/6
    (ecto) lib/ecto/migrator.ex:128: Ecto.Migrator.attempt/6
    (ecto) lib/ecto/migrator.ex:73: anonymous fn/4 in Ecto.Migrator.do_up/4
    (ecto) lib/ecto/adapters/sql.ex:576: anonymous fn/3 in Ecto.Adapters.SQL.do_transaction/3
    (db_connection) lib/db_connection.ex:1283: DBConnection.transaction_run/4
    (db_connection) lib/db_connection.ex:1207: DBConnection.run_begin/3
    (db_connection) lib/db_connection.ex:798: DBConnection.transaction/3
    (ecto) lib/ecto/migrator.ex:261: anonymous fn/4 in Ecto.Migrator.migrate/4
    (elixir) lib/enum.ex:1294: Enum."-map/2-lists^map/1-0-"/2
    (ecto) lib/mix/tasks/ecto.migrate.ex:83: anonymous fn/4 in Mix.Tasks.Ecto.Migrate.run/2
    (elixir) lib/enum.ex:737: Enum."-each/2-lists^foreach/1-0-"/2
    (elixir) lib/enum.ex:737: Enum.each/2
    (mix) lib/mix/task.ex:314: Mix.Task.run_task/3
    (mix) lib/mix/cli.ex:80: Mix.CLI.run_task/2

[jerel]

Good day, your schema looks correct but the migration should instead set the column type to the database type such as string or text. If you still have trouble let me know.