4D v18
dataClassAttribute.mandatory
- 4D Language Reference
-
- ORDA - DataClassAttribute
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- dataClassAttribute.autoFilled
- dataClassAttribute.fieldNumber
- dataClassAttribute.fieldType
- dataClassAttribute.indexed
- dataClassAttribute.inverseName
- dataClassAttribute.keyWordIndexed
- dataClassAttribute.kind
- dataClassAttribute.mandatory
- dataClassAttribute.name
- dataClassAttribute.relatedDataClass
- dataClassAttribute.type
- dataClassAttribute.unique
4D v18
dataClassAttribute.mandatory
dataClassAttribute.mandatory
| Parameter | Type | Description | ||||||
| dataClassAttribute.mandatory | Boolean |
|
True if Null values are rejected | |||||
The dataClassAttribute.mandatory contains True if Null value input is rejected for the attribute.
This property is not returned if dataClassAttribute.kind = "relatedEntity" or "relatedEntities".
Note: For generic programming, you can use Bool(dataClassAttribute.mandatory) to get a valid value (false) even if mandatory is not returned.
Warning: This property corresponds to the "Reject NULL value input" field property at the 4D database level. It is unrelated to the existing "Mandatory" property which is a data entry control option for a table.
PROPERTIES
Product: 4D
Theme: ORDA - DataClassAttribute
HISTORY
Created: 4D v17 R5
ARTICLE USAGE
4D Language Reference ( 4D v18)
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