What is the best way to customize the default error object returned by grails domain constraint validation failures?
The current JSON I am getting is
{"errors": [{"object": "com.self.learning.grails.demo.api.Person",
"field": "name",
"rejected-value": "K12332434",
"message": "Property [orgKey] of class [class com.self.learning.grails.demo.api.Person] with value [K123324343432432432432] exceeds the maximum size of [12]"
}]}
I want to get rid of "object" from the above response and want to have "error-code".
I am pretty new to grails and struggling with few basic implementations. Thanks in advance.
You can create a new custom marshaller for validation errors and register it in Bootstrap.groovy as
JSON.registerObjectMarshaller( new MyCustomValidationErrorsMarshaller() )
Just replace this line by your error-code for example:
json.property( "error-code", HttpStatus.UNPROCESSABLE_ENTITY.value() )
A quick way would be to register object marshaller right in the bootstrap but that will bloat bootstrap class. It is cleaner to write a custom marshaller.
Another way would be write an interceptor and intercept response then just replace object from error response with your desired error code.