Ecto.Schema.Metadata (Ecto v3.7.0) View Source

Stores metadata of a struct.

State

The state of the schema is stored in the :state field and allows following values:

:built - the struct was constructed in memory and is not persisted to database yet;
:loaded - the struct was loaded from database and represents persisted data;
:deleted - the struct was deleted and no longer represents persisted data.

Source

The :source tracks the (table or collection) where the struct is or should be persisted to.

Prefix

Tracks the source prefix in the data storage.

Context

The :context field represents additional state some databases require for proper updates of data. It is not used by the built-in adapters of Ecto.Adapters.Postgres and Ecto.Adapters.MySQL.

Schema

The :schema field refers the module name for the schema this metadata belongs to.

Link to this section Summary

Types

context()

state()

t()

t(schema)

Link to this section Types

context()

Specs

context() :: any()

state()

Specs

state() :: :built | :loaded | :deleted

t()

Specs

t() :: t(module())

t(schema)

Specs

t(schema) :: %Ecto.Schema.Metadata{
  context: context(),
  prefix: Ecto.Schema.prefix(),
  schema: schema,
  source: Ecto.Schema.source(),
  state: state()
}