And groups conditions with the AND operator.

FixedError is a hook returning a fixed error.

HasAddedFields is a condition validating `.AddedField` on fields.

HasClearedFields is a condition validating `.FieldCleared` on fields.

HasFields is a condition validating `.Field` on fields.

HasOp is a condition testing mutation operation.

If executes the given hook under condition.

NewChain creates a new chain of hooks.

Not negates a given condition.

On executes the given hook only for the given operation.

Or groups conditions with the OR operator.

Reject returns a hook that rejects all operations that match op.

Unless skips the given hook only for the given operation.

Chain acts as a list of hooks and is effectively immutable.

Condition is a hook condition function.

The DishAliasFunc type is an adapter to allow the use of ordinary function as DishAlias mutator.

The DishFunc type is an adapter to allow the use of ordinary function as Dish mutator.

The ImageFunc type is an adapter to allow the use of ordinary function as Image mutator.

The LocationFunc type is an adapter to allow the use of ordinary function as Location mutator.

The OccurrenceFunc type is an adapter to allow the use of ordinary function as Occurrence mutator.

The ReviewFunc type is an adapter to allow the use of ordinary function as Review mutator.

The TagFunc type is an adapter to allow the use of ordinary function as Tag mutator.

The UserFunc type is an adapter to allow the use of ordinary function as User mutator.