Grails: How to combine domain objects' errors with command objects' errors?

Question

Suppose I have User domain class and RegistrationCommand class. So when user is registering on website there are two steps for data validation:

RegistrationCommand constraints validation.
User domain object constrains validation.

Controller action receive command object and pass it to view in a model after computing. So, I want to join domain objects' validation errors with command objects' errors and pass them as a part of command object. What is the best way to do that?

score 10 · Accepted Answer · answered Jan 06 '12 at 16:57

I think the full answer is:

if (!user.validate() || !user.save(true))
{
    if (user.errors.hasErrors())
    {
        user.errors.allErrors.each {FieldError error ->
            final String field = error.field?.replace('profile.', '')
            final String code = "registrationCommand.$field.$error.code"
            command.errors.rejectValue(field, code)
        }
    }
    chain(action: 'registration', model: [command: command])
    return
}

score 5 · Answer 2 · edited Mar 06 '14 at 08:05

5

I did the following for my project and found it to be more cleaner!

domain.errors.each {
  cmdObject.errors.reject(it.code, g.message(error: it))
}

edited Mar 06 '14 at 08:05

uladzimir

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answered Aug 15 '12 at 21:51

Karthick AK

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5

score 3 · Answer 3 · edited Jul 19 '12 at 14:40

3

You could probably use the reject mechanism, i.e.

domainObjects.errors.each{
     commandObject.errors.reject( ... )
}

http://grails.org/doc/1.3.7/ref/Domain%20Classes/errors.html

edited Jul 19 '12 at 14:40

Buhake Sindi

87,898
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answered Dec 04 '11 at 19:01

Tomas Lin

3,532
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19

That should be the best way. But I can't think out how to migrate errors' codes from Domain object to Command object. Suppose, in Domain object I have these auto-generated error codes in FieldError object: `com.site.account.Profile.signature.blank.com.site.account.User.profile.signature … com.site.account.Profile.signature.blank … profile.signature.blank blank.com.site.account.User.profile.signature blank.profile.signature blank.signature blank.java.lang.String blank` In result I want to transform them into this code: `RegistrationCommand.signature.blank` How can I achieve that? – Yarovoy Jan 06 '12 at 15:06

Grails: How to combine domain objects' errors with command objects' errors?

3 Answers3

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