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Updates a field configuration. Currently, field updates apply only to single field index configuration. However, calls to FirestoreAdmin.UpdateField should provide a field mask to avoid changing any configuration that the caller isn't aware of. The field mask should be specified as: { paths: "indexConfig" }.
This call returns a google.longrunning.Operation which may be used to track the status of the field update. The metadata for the operation will be the type FieldOperationMetadata.
To configure the default field settings for the database, use the special Field with resource name: projects/{projectId}/databases/{databaseId}/collectionGroups/__default__/fields/*.
A field name of the form projects/{projectId}/databases/{databaseId}/collectionGroups/{collectionId}/fields/{fieldPath}
A field path may be a simple field name, e.g. address or a path to fields within mapValue , e.g. address.city, or a special field path. The only valid special field is *, which represents any field.
Field paths may be quoted using (backtick). The only character that needs
to be escaped within a quoted field path is the backtick character itself,
escaped using a backslash. Special characters in field paths that
must be quoted include:*,.,
``` (backtick),[,]`, as well as any ascii symbolic characters.
Examples: (Note: Comments here are written in markdown syntax, so there is an additional layer of backticks to represent a code block) \address.city`represents a field namedaddress.city, not the map key
cityin the fieldaddress.
`*`represents a field named*`, not any field.
A special Field contains the default indexing settings for all fields. This field's resource name is: projects/{projectId}/databases/{databaseId}/collectionGroups/__default__/fields/* Indexes defined on this Field will be applied to all fields which do not have their own Field index configuration.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-06-20 UTC."],[],[],null,["# Method: projects.databases.collectionGroups.fields.patch\n\nUpdates a field configuration. Currently, field updates apply only to single field index configuration. However, calls to [FirestoreAdmin.UpdateField](/docs/firestore/reference/rest/v1beta2/projects.databases.collectionGroups.fields/patch#google.firestore.admin.v1beta2.FirestoreAdmin.UpdateField) should provide a field mask to avoid changing any configuration that the caller isn't aware of. The field mask should be specified as: `{ paths: \"indexConfig\" }`.\n\nThis call returns a [google.longrunning.Operation](/docs/firestore/reference/rest/Shared.Types/Operation) which may be used to track the status of the field update. The metadata for the operation will be the type `FieldOperationMetadata`.\n\nTo configure the default field settings for the database, use the special `Field` with resource name: `projects/{projectId}/databases/{databaseId}/collectionGroups/__default__/fields/*`.\n\n### HTTP request\n\n`PATCH https://firestore.googleapis.com/v1beta2/{field.name=projects/*/databases/*/collectionGroups/*/fields/*}`\n\nThe URL uses [gRPC Transcoding](https://google.aip.dev/127) syntax.\n\n### Path parameters\n\n| Parameters ||\n|--------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `field.name` | `string` A field name of the form `projects/{projectId}/databases/{databaseId}/collectionGroups/{collectionId}/fields/{fieldPath}` A field path may be a simple field name, e.g. `address` or a path to fields within mapValue , e.g. `address.city`, or a special field path. The only valid special field is `*`, which represents any field. Field paths may be quoted using `(backtick). The only character that needs to be escaped within a quoted field path is the backtick character itself, escaped using a backslash. Special characters in field paths that must be quoted include:`\\*`,`.````, ``` (backtick),````\\[`,`\\]\\`, as well as any ascii symbolic characters. Examples: (Note: Comments here are written in markdown syntax, so there is an additional layer of backticks to represent a code block) `\\`address.city\\``represents a field named`address.city`, not the map key `city`in the field`address`. `\\`\\*\\``represents a field named`\\*\\`, not any field. A special `Field` contains the default indexing settings for all fields. This field's resource name is: `projects/{projectId}/databases/{databaseId}/collectionGroups/__default__/fields/*` Indexes defined on this `Field` will be applied to all fields which do not have their own `Field` index configuration. |\n\n### Query parameters\n\n| Parameters ||\n|--------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `updateMask` | `string (`[FieldMask](https://protobuf.dev/reference/protobuf/google.protobuf/#field-mask)` format)` A mask, relative to the field. If specified, only configuration specified by this field_mask will be updated in the field. This is a comma-separated list of fully qualified names of fields. Example: `\"user.displayName,photo\"`. |\n\n### Request body\n\nThe request body contains an instance of [Field](/docs/firestore/reference/rest/v1beta2/projects.databases.collectionGroups.fields#Field).\n\n### Response body\n\nIf successful, the response body contains an instance of [Operation](/docs/firestore/reference/rest/Shared.Types/Operation).\n\n### Authorization scopes\n\nRequires one of the following OAuth scopes:\n\n- `https://www.googleapis.com/auth/datastore`\n- `https://www.googleapis.com/auth/cloud-platform`\n\nFor more information, see the [OAuth 2.0 Overview](https://developers.google.com/identity/protocols/OAuth2)."]]
