Transaction class which is created from a call to
DocumentReference documentReference) → Transaction
Deletes the document referred to by the provided
DocumentReference documentReference) → Future< DocumentSnapshot>
- Reads the document referenced by the provided DocumentReference. [...]
Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
DocumentReference documentReference, Map< String, dynamic>data, [SetOptions options]) → Transaction
- Writes to the document referred to by the provided DocumentReference. If the document does not exist yet, it will be created. If you pass SetOptions, the provided data can be merged into the existing document.
) → String
A string representation of this object. [...]
DocumentReference documentReference, Map< String, dynamic>data) → Transaction
Updates fields in the document referred to by
documentReference. The update will fail if applied to a document that does not exist.