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Questions tagged [grails-validation]

Grails validation capability is built on Spring’s Validator API and data binding capabilities. However Grails takes this further and provides a unified way to define validation "constraints" with its constraints mechanism.

Docs: https://docs.grails.org/latest/guide/validation.html

Famous question: Grails domain class: unique constraint for multiple columns

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Grails domain class: unique constraint for multiple columns

Suppose a simple Grails domain class: class Account { String countryId; String userName; String password; static constraints = { ...???... } } It is required that user names are unique for a particular countryId, thus…
rainer198
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Displaying Grails Field Errors

Does anybody know how I could get the fieldError to print out in the example below. for each item with an error, I would like to print custom error messages that I have defined in the messages.properties file at the moment all this does is print the…
mh377
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How can I override the default error message in Grails?

I have a Person object with a lastName field. The lastName field cannot be blank. When the user submits a form blank value in the lastName field, the error message that the user sees is: Property [lastName] of class [com.example.Person] cannot be…
Spike Williams
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Grails Problem with custom error messages

I am currently trying to specify custom error messages in grails for the default constraints but so far all I get back is the default error message. I know that I have to edit the grails-app/i18n/messages.properties file If I change the following…
mh377
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Grails: nested command objects

In my grails app I have an outer command object that contains a list of other command objects: public class OuterCommand { List innerCommands = ListUtils.lazyList([], FactoryUtils.instantiateFactory(InnerCommand)) } class…
Dónal
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Grails min constraint for date validation

I am a newbie in grails and groovy. I have a Project domain-class with start and end date. I want to put in a constraint specifying that the end date needs to be greater than the start date(and then further another child object of project needs to…
Ravindra Sane
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What is the connection between validate() and hasErrors()

This question comes from the problem of another question of mine. In that question, I come across a situation that hasErrors() function doesn't work for non-persistent domain class, even after all the things I did following the instruction, part 7.5…
Hoàng Long
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Rendering command validation errors across a redirect

I cannot render the errors from my command object. It does the job well but my .gsp view does not render the errors I raise. Here is my controller action: def handleModifyProfile2 = { CreditProviderModificationCommand cpmc -> // bind params to the…
Alexandre Bourlier
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Grails: can I make a validator apply to create only (not update/edit)

I have a domain class that needs to have a date after the day it is created in one of its fields. class myClass { Date startDate String iAmGonnaChangeThisInSeveralDays static constraints = { iAmGonnaChangeThisInSeveralDays(nullable:true) …
Mikey
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custom Grails validation

Normally for a Grails domain or command class, you declare your constraints and the framework adds a validate() method that checks whether each of these constraints is valid for the current instance e.g. class Adult { String name Integer age …
Dónal
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Grails client side validation

How do you (if you) manage client side validation with grails ? Do you use a plugin or do you mirror your constraints using a javascript framework ? Cheers
user217975
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grails validate nested command object not working

I'm using grails 2.2.1 and attempting to validate a nested command structure. Here is a simplified version of my command objects: @Validateable class SurveyCommand { SectionCommand useful SectionCommand recommend SurveyCommand() { …
Chris Montgomery
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Grails conditional nullable validation or custom validator with nullable option

I have a form to create a place. Depending of the country, the province (state, region) field is required or not. When is not required, I want to be null, not empty string. I have code that makes all empty form fields, null: def newparams = [:] …
Eduard
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parameterized Grails validation messages

In the messages.properties file in a Grails application I've seen examples of validation messages such as: User.password.size=Size of bar must be between {0} and {1} which applies to class User { String password static constraints = { …
Dónal
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Grails domain class constraints for relation between fields

I need to write Domain class constraint in Grails which says that one integer field must be greater or equal than the other. When I write the code like this: class MyDomain { String title int valueMin = 1 int valueMax = 1 static constraints =…
Pavel P
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