PropertiesComparisonRule

Implements: IValidationRule

Description

The PropertiesComparisonRule class allows you to create a validation rule to compare two object properties.

Constructors

NewPropertiesComparisonRule

Creates a new validation rule and sets its arguments. See ObjectComparator.compare

NewPropertiesComparisonRule(property1 string, operation string, property2 string) *PropertiesComparisonRule

• property1: string - name of the first property to compare.
• operation: string - comparison operation: "==" ("=", “EQ”), “!= " ("<>”, “NE”); “<"/">” (“LT”/“GT”), “<="/">=” (“LE”/“GE”); “LIKE”.
• property2: string - name of the second property to compare.

Methods

Validate

Validates a given value against this rule.

(c *PropertiesComparisonRule) Validate(path string, schema ISchema, value any) []*ValidationResult

• path: string - dot notation path to the value.
• schema: ISchema - schema this rule is called from
• value: any - value to be validated.
• results: []*ValidationResult - list with validation results to add new results.

Examples

var schema = NewObjectSchema().WithRule(NewPropertyComparisonRule("field1", "NE", "field2"))

schema.Validate(struct {
	field1 int
	field2 int
}{field1: 1, field2: 2}) // Result: no errors
schema.Validate(struct {
	field1 int
	field2 int
}{field1: 1, field2: 1}) // Result: field1 shall not be equal to field2
schema.Validate(struct{}{}) // Result: no errors

See also

• IValidationRule