access_token.ex

defmodule Kipatest.AccessToken do
  use Kipatest.Web, :model

  @type t :: %{__struct__: atom}

  @primary_key {:id, Ecto.UUID, autogenerate: true}
  schema "access_tokens" do
    field :is_valid, :boolean, default: true
    field :refresh_token, Ecto.UUID, autogenerate: true
    field :expired_at, Timex.Ecto.DateTime
    field :refresh_token_expired_at, Timex.Ecto.DateTime

    belongs_to :user, Kipatest.User

    timestamps()
  end

  @spec new_token(User.t) :: Changeset.t
  def new_token(user) do
    %AccessToken{}
    |> change
    |> put_change(:expired_at, Timex.shift(Timex.now, days: 60))
    |> put_change(:refresh_token_expired_at, Timex.shift(Timex.now, days: 120))
    |> put_assoc(:user, user)
  end

  @spec new_token(AccessToken.t) :: true | false
  def is_expired(token) do
    Timex.diff(Timex.now, token.expired_at) > 0
  end
end

access_token_warning.sh

access_token.ex:19: Function new_token/1 has no local return
access_token.ex:21: The call 'Elixir.Ecto.Changeset':change(#{'__meta__':=#{'__struct__':='Elixir.Ecto.Schema.Metadata', 'context':='nil', 'source':={'nil',<<_:104>>}, 'state':='built'}, '__struct__':='Elixir.Kipatest.AccessToken', 'expired_at':='nil', 'id':='nil', 'inserted_at':='nil', 'is_valid':='true', 'refresh_token':='nil', 'refresh_token_expired_at':='nil', 'updated_at':='nil', 'user':=#{'__cardinality__':='one', '__field__':='user', '__owner__':='Elixir.Kipatest.AccessToken', '__struct__':='Elixir.Ecto.Association.NotLoaded'}, 'user_id':='nil'}) will never return since it differs in the 1st argument from the success typing arguments: ({map(),[{atom(),_}] | map()} | #{'__struct__':=atom(), 'action'=>'delete' | 'insert' | 'nil' | 'replace' | 'update', 'changes'=>#{atom()=>_}, 'constraints'=>[#{'constraint':=binary(), 'field':=atom(), 'match':='exact' | 'suffix', 'message':={_,_}, 'type':='unique'}], 'data'=>'nil' | #{'__struct__':=atom()}, 'empty_values'=>_, 'errors'=>[{atom(),{_,_}}], 'filters'=>#{atom()=>_}, 'params'=>'nil' | #{binary()=>_}, 'prepare'=>[fun((map()) -> map())], 'repo'=>atom(), 'required'=>[atom()], 'types'=>'nil' | #{atom()=>atom() | {'array',_} | {'embed',map()} | {'in',_} | {'map',_}}, 'valid?'=>boolean(), 'validations'=>[{atom(),_}]})
organization.ex:14: Function create_changeset/1 has no local return
organization.ex:15: The call 'Elixir.Ecto.Changeset':change(#{'__meta__':=#{'__struct__':='Elixir.Ecto.Schema.Metadata', 'context':='nil', 'source':={'nil',<<_:104>>}, 'state':='built'}, '__struct__':='Elixir.Kipatest.Organization', 'id':='nil', 'inserted_at':='nil', 'name':='nil', 'owner':=#{'__cardinality__':='one', '__field__':='owner', '__owner__':='Elixir.Kipatest.Organization', '__struct__':='Elixir.Ecto.Association.NotLoaded'}, 'owner_id':='nil', 'updated_at':='nil'},[{'name',_},...]) breaks the contract ('Elixir.Ecto.Schema':t() | t() | {data(),types()},#{atom()=>term()} | 'Elixir.Keyword':t()) -> t() | no_return()

organization.ex

defmodule Kipatest.Organization do
  use Kipatest.Web, :model

  @type t :: %{__struct__: atom}

  schema "organizations" do
    field :name, :string
    belongs_to :owner, Kipatest.User

    timestamps()
  end

  @spec create_changeset(User.t) :: Changeset.t
  def create_changeset(user) do
    %Organization{} |> change(name: user.name) |> put_assoc(:owner, user)
  end
end

This is bug from Ecto 2.0.6

We fix it by change @type t :: %{__struc__: atom} to @type t :: struct in Ecto library