memEx/lib/lokal/accounts/invite.ex

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defmodule Lokal.Accounts.Invite do
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@moduledoc """
An invite, created by an admin to allow someone to join their instance. An
invite can be enabled or disabled, and can have an optional number of uses if
`:uses_left` is defined.
"""
use Ecto.Schema
import Ecto.Changeset
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alias Ecto.{Association, Changeset, UUID}
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alias Lokal.Accounts.User
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@primary_key {:id, :binary_id, autogenerate: true}
@foreign_key_type :binary_id
schema "invites" do
field :name, :string
field :token, :string
field :uses_left, :integer, default: nil
field :disabled_at, :naive_datetime
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belongs_to :created_by, User
has_many :users, User
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timestamps()
end
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@type t :: %__MODULE__{
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id: id(),
name: String.t(),
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token: token(),
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uses_left: integer() | nil,
disabled_at: NaiveDateTime.t(),
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created_by: User.t() | nil | Association.NotLoaded.t(),
created_by_id: User.id() | nil,
users: [User.t()] | Association.NotLoaded.t(),
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inserted_at: NaiveDateTime.t(),
updated_at: NaiveDateTime.t()
}
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@type new_invite :: %__MODULE__{}
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@type id :: UUID.t()
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@type changeset :: Changeset.t(t() | new_invite())
@type token :: String.t()
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@doc false
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@spec create_changeset(User.t(), token(), attrs :: map()) :: changeset()
def create_changeset(%User{id: user_id}, token, attrs) do
%__MODULE__{}
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|> change(token: token, created_by_id: user_id)
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|> cast(attrs, [:name, :uses_left, :disabled_at])
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|> validate_required([:name, :token, :created_by_id])
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|> validate_number(:uses_left, greater_than_or_equal_to: 0)
end
@doc false
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@spec update_changeset(t() | new_invite(), attrs :: map()) :: changeset()
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def update_changeset(invite, attrs) do
invite
|> cast(attrs, [:name, :uses_left, :disabled_at])
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|> validate_required([:name])
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|> validate_number(:uses_left, greater_than_or_equal_to: 0)
end
end