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Fields

• Adding Fields to Objects
  • Field Types UI Reference
  • Reserved Field Names
  • Additional Information
• Adding and Managing Custom States
  • Adding a State Field to Object Definitions
  • Setting Up a Flow for State Fields
  • Additional Information
• Aggregation Fields
  • Functions Reference
  • Using Aggregation Filters
  • Additional Information
• Attachment Fields
  • Additional Information

Available Liferay 7.4+

Object fields are data definitions that represent database columns and store different types of values. All objects include default system fields, but you can add custom fields to both draft and published objects.

When you publish an object draft, Liferay creates an initial database table that includes all fields and relationships in the draft at the time of publishing. Fields and relationships added after publishing are added to a side table (i.e., [Initial_Table_Name]_x).

Liferay provides these field types that correspond to specific data types in the back-end:

Field Types (UI)	Data Type (HEADLESS)	Description
Aggregation	String	Stores read-only values calculated using values from a relationship table. Available functions include count, sum, average, min, and max.
Attachment	Relationship > Long	Stores files; by default, uploaded files can be no larger than 100 MB; this field supports all file types accepted by Documents and Media.
Boolean	Boolean	Stores true or false values
Date	Date	Stores date values
Decimal (previously Double)	Double	Stores a decimal number value with a limit of 16 digits. Example: 999.9999999999999 (16 digits total)
Integer	Integer	Stores an integer up to nine digits in length. Maximum value: 2147483647 Minimum value: -2147483648
Long Integer (previously Long)	Long	Stores a large integer up to 16 digits in length. Maximum value: 9007199254740991 Minimum value: -9007199254740991
Long Text (previously Clob)	Clob	Stores a text box value that supports up to 65,000 characters; after creating a Long Text field, you can configure it to limit the number of characters allowed.
Picklist	String	Stores a Picklist string value.
Precision Decimal (previously BigDecimal)	BigDecimal	Stores a high-precision decimal number without rounding and supports up to 16 decimal digits. Maximum Value: 99999999999999.9999999999999999 Minimum value: -99999999999999.9999999999999999
Relationship	Long	Stores the numeric ID for all related object entries. Objects automatically adds relationship fields to objects on the child side of a One to Many relationship. See Defining Object Relationships for more information.
Rich Text	Clob	Stores text with advanced formatting tools and media elements (e.g., images, videos, audio).
Text (previously String)	String	Stores simple text values up to 280 characters; after creating a Text field, you can configure it to limit the number of characters allowed.

Adding Fields to Objects

Adding and Managing Custom States

Aggregation Fields

Attachment Fields

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