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      • Created at

      Introduction

      In NocoBase, Created at automatically records the time when a record was created.

      It is usually generated by preset fields and is suitable for sorting, filtering, auditing, workflow conditions, and data statistics. For a manually entered business date, such as a signing or expiry date, use Date or DateTime.

      Use cases

      Created at fields are suitable for these business scenarios:

      • Audit and creation-time tracking
      • Sorting and filtering by creation time
      • Workflow conditions
      • Data statistics

      Create and configure

      On the collection's Configure fields page, click Add field and select Created at to create this field.

      Configure a Created at field

      SettingDescription
      Field interfaceThe field interface. Created at uses createdAt, which determines how the field is entered and displayed in pages.
      Field display nameThe name displayed for the field, such as Created at or Creation time. Use a name that business users can recognize.
      Field nameThe field identifier used internally by APIs, relation fields, permissions, and workflows. It usually cannot be changed after creation. It supports only letters, numbers, and underscores, and must begin with a letter.
      Field typeThe data-layer type. Created at uses date by default.
      Default valueThe default value. When a new record has no value, NocoBase can fill this value automatically.
      Validation rulesValidation rules. Is maintained automatically and normally does not require manual validation.
      DescriptionA field description. Record the field meaning, entry requirements, data source, or maintainer.
      Note

      Field names are referenced by page blocks, permissions, workflows, and APIs after creation. Confirm the name before creating the field to avoid later configuration changes.

      Field behavior

      The default behavior of a Created at field is as follows:

      BehaviorDescription
      Default Field interfacecreatedAt.
      Default Field typedate.
      Available Field typesdate.
      Page componentIs maintained automatically by the system.
      FilteringSupports date-time filtering.
      SortingSupports chronological sorting in Table blocks.
      ValidationIs maintained automatically and normally does not require manual validation.

      Edit configuration

      After creation, click Edit beside the field to edit its configuration. Edit fields to adjust how they are displayed and used in NocoBase, such as the display name, description, default value, validation rules, or field-specific settings.

      When a field comes from a synchronized main-database table, editing usually maps the database field to a NocoBase Field type and Field interface.

      SettingCan be editedDescription
      Field display nameYesChanges the name displayed in the interface without changing the field identifier.
      Field nameNoThe field identifier normally cannot be changed in the edit form after creation.
      Field interfaceConditionalMain-database fields and synchronized fields can be adjusted during field mapping. Changes affect page input, display, and validation.
      Field typeConditionalMain-database fields and synchronized fields can be adjusted during field mapping. Confirm that existing values can be used by the new type first.
      Default valueYesAdjusts the default value for new records.
      Validation rulesYesAdjusts field validation rules.
      DescriptionYesAdds the field meaning, entry requirements, data source, or maintainer.
      Note

      Changing a Field type or Field interface is more than changing a display name. It affects field storage, input components, validation rules, filters, and workflow-variable usage. When the field contains substantial existing data, confirm that its data format is compatible first.

      Delete field

      Click Delete beside a Created at field to delete it. You can also select multiple fields and delete them in the main data source.

      Deleting a Created at field created in the main database usually also deletes the actual database column and its values. For a synchronized or external-data-source field, the impact depends on the corresponding data source and field origin.

      Warning

      Deleting a field can affect page blocks, forms, filters, permissions, workflows, APIs, imports and exports, and existing data. Confirm that the field is no longer referenced by business configuration before deleting it.

      Use in pages

      Created at fields are suitable for audit, filters, and workflow conditions.

      Use a Created at field in a page

      ScenarioUse
      Table blockDisplay, sort, and filter records by creation time.
      Details blockDisplay the record creation time.
      Filter blockFilter records by creation date.
      Workflows and permissionsUse the creation time in conditions.
      • Fields - Learn about field categories and mapping.
      • General collection - Create and manage fields in a collection.
      • Date - Store a manually entered business date.
      • DateTime - Store a manually entered business date and time.