@type t() :: %Flop.FieldInfo{
  ecto_type: Flop.Schema.ecto_type() | nil,
  extra: map(),
  operators: [Flop.Filter.op()] | nil
}

Contains the information about a schema field.

• ecto_type - The Ecto type of the field. This value is used to determine which operators can be used on the field and to determine how to cast filter values.
• operators - The allowed filter operators on this field. If nil, the allowed operators are determined based on the ecto_type. If set, the given operator list is used instead.
• extra - A map with additional configuration for the field. The contents depend on the specific adapter.