A Firestore WriteBatch that can be used to atomically commit multiple write operations at once.
WriteBatch
Package
@google-cloud/firestoreConstructors
(constructor)(firestore)
constructor
(
firestore
:
Firestore
);
Constructs a new instance of the WriteBatch
class
Properties
_opCount
get
_opCount
()
:
number
;
The number of writes in this batch.
Methods
commit()
commit
()
:
Promise<WriteResult
[]>;
Atomically commits all pending operations to the database and verifies all preconditions. Fails the entire write if any precondition is not met.
let
writeBatch
=
firestore
.
batch
();
let
documentRef
=
firestore
.
doc
(
'col/doc'
);
writeBatch
.
set
(
documentRef
,
{
foo
:
'bar'
});
writeBatch
.
commit
().
then
(()
=
>
{
console
.
log
(
'Successfully executed batch.'
);
});
create(documentRef, data)
create<AppModelType
,
DbModelType
extends
firestore
.
DocumentData
> (
documentRef
:
firestore
.
DocumentReference<AppModelType
,
DbModelType
> ,
data
:
firestore
.
WithFieldValue<AppModelType>
)
:
WriteBatch
;
Create a document with the provided object values. This will fail the batch if a document exists at its location.
documentRef
FirebaseFirestore.DocumentReference
<AppModelType, DbModelType>
A reference to the document to be created.
data
FirebaseFirestore.WithFieldValue
<AppModelType>
The object to serialize as the document.
{WriteBatch} This WriteBatch instance. Used for chaining method calls.
AppModelType
DbModelType
let
writeBatch
=
firestore
.
batch
();
let
documentRef
=
firestore
.
collection
(
'col'
).
doc
();
writeBatch
.
create
(
documentRef
,
{
foo
:
'bar'
});
writeBatch
.
commit
().
then
(()
=
>
{
console
.
log
(
'Successfully executed batch.'
);
});
delete(documentRef, precondition)
delete
(
documentRef
:
firestore
.
DocumentReference<any
,
any
> ,
precondition
?:
firestore
.
Precondition
)
:
WriteBatch
;
Deletes a document from the database.
documentRef
FirebaseFirestore.DocumentReference
<any, any>
A reference to the document to be deleted.
precondition
firestore.Precondition
A precondition to enforce for this delete.
{WriteBatch} This WriteBatch instance. Used for chaining method calls.
let
writeBatch
=
firestore
.
batch
();
let
documentRef
=
firestore
.
doc
(
'col/doc'
);
writeBatch
.
delete
(
documentRef
);
writeBatch
.
commit
().
then
(()
=
>
{
console
.
log
(
'Successfully executed batch.'
);
});
set(documentRef, data, options)
set<AppModelType
,
DbModelType
extends
firestore
.
DocumentData
> (
documentRef
:
firestore
.
DocumentReference<AppModelType
,
DbModelType
> ,
data
:
firestore
.
PartialWithFieldValue<AppModelType>
,
options
:
firestore
.
SetOptions
)
:
WriteBatch
;
documentRef
FirebaseFirestore.DocumentReference
<AppModelType, DbModelType>
data
FirebaseFirestore.PartialWithFieldValue
<AppModelType>
options
firestore.SetOptions
AppModelType
DbModelType
set(documentRef, data)
set<AppModelType
,
DbModelType
extends
firestore
.
DocumentData
> (
documentRef
:
firestore
.
DocumentReference<AppModelType
,
DbModelType
> ,
data
:
firestore
.
WithFieldValue<AppModelType>
)
:
WriteBatch
;
documentRef
FirebaseFirestore.DocumentReference
<AppModelType, DbModelType>
data
FirebaseFirestore.WithFieldValue
<AppModelType>
AppModelType
DbModelType
update(documentRef, dataOrField, preconditionOrValues)
update<AppModelType
=
firestore
.
DocumentData
,
DbModelType
extends
firestore
.
DocumentData
=
firestore
.
DocumentData
> (
documentRef
:
firestore
.
DocumentReference<AppModelType
,
DbModelType
> ,
dataOrField
:
firestore
.
UpdateData<DbModelType>
|
string
|
firestore
.
FieldPath
,
...
preconditionOrValues
:
Array
< {
lastUpdateTime
?:
firestore
.
Timestamp
;
}
|
unknown
|
string
|
firestore
.
FieldPath
> )
:
WriteBatch
;
Update fields of the document referred to by the provided [DocumentReference] DocumentReference . If the document doesn't yet exist, the update fails and the entire batch will be rejected.
The update() method accepts either an object with field paths encoded as keys and field values encoded as values, or a variable number of arguments that alternate between field paths and field values. Nested fields can be updated by providing dot-separated field path strings or by providing FieldPath objects.
A Precondition restricting this update can be specified as the last argument.
documentRef
FirebaseFirestore.DocumentReference
<AppModelType, DbModelType>
A reference to the document to be updated.
dataOrField
FirebaseFirestore.UpdateData
<DbModelType> | string | FirebaseFirestore.FieldPath
An object containing the fields and values with which to update the document or the path of the first field to update.
preconditionOrValues
Array
<{
lastUpdateTime?: FirebaseFirestore.Timestamp
;
} | unknown | string | FirebaseFirestore.FieldPath
>
An alternating list of field paths and values to update or a Precondition to restrict this update.
{WriteBatch} This WriteBatch instance. Used for chaining method calls.
AppModelType
DbModelType
let
writeBatch
=
firestore
.
batch
();
let
documentRef
=
firestore
.
doc
(
'col/doc'
);
writeBatch
.
update
(
documentRef
,
{
foo
:
'bar'
});
writeBatch
.
commit
().
then
(()
=
>
{
console
.
log
(
'Successfully executed batch.'
);
});
