Grails

• Type: Bug
• Status: Reopened
• Priority: Critical
• Resolution: Unresolved
• Affects Version/s: 1.3.2
• Fix Version/s: 2.2
• Component/s: Controllers, Persistence
• Labels:

  None
• Environment:

  MAC OSX 10.6.4 and Windows XP

When trying to persist a User object that has a many-to-many relation with a Role object i am getting unexpected behaviour. This at least to my newbie understanding.

Using a form that submits the User params and trying to persist the user a strange thing occurs. The validation errors on the User object which are there are totally ignored and the User object is persisted.

Example:
I have created a User domain class which has a constraint on the firstname [it may not be blank] and email [must be an email adress].

static constraints = {
   firstname(blank:false)
   email(nullable:false, blank:false, email:true)
}

So I expect when the form params are submited to the controller the .save() or .validate() will complain when i submit a user with NO firstname and NO email.

But what is see in the database is that the user is persisted without any problems. Also the row in the ROLE_USERS table is nicely filled with the correct id's from the role and user.

My GSP create page submits the value's to the controller like this:

<g:textField name="firstname" value="${user?.firstname}" size="12"/>
..

and for the role data:

<g:select name="roles" from="${roles}" value="${user?.roles?.id}" optionKey="id" optionValue="name"/>

I checked the object details using NetBeans debugger and they inspectors tells me that indeed the User object is filled with a blank username, blank email and with a correct role inside it.

I also checked if a incorrect User is saved when there is no many-to-many mapping. So i have a single User object. Then the validation errors are correctly handled. In other words the User is then NOT persisted exactly I expect!

I am having this problem on Grails 1.3.1 and also 1.3.2

I am wondering what i am missing in this scenario?? Do need to persist the data in another way? or am i using the many-to-many in a wrong way?

class Role {

    String name
    String description
    
    static constraints = {
        name(blank:false, unique:true)
        description(nullable:true)
    }

    static hasMany = [users: User]
}

class User {

    String firstname
    String lastname
    String email
    String fogbugzToken

    static constraints = {
        firstname(blank:false)
        //email(email:true)
    }

    static hasMany = [roles: Role]
    static belongsTo = Role
}

class UserController { 
...
    def create = {
        def userInstance = new User()
        userInstance.properties = params
        return [userInstance: userInstance, roles: Role.list()]
    }

    def save = {
        def userInstance = new User(params)
        if (userInstance.save(flush: true)) {
            flash.message = "Created User $userInstance.id"
            redirect(action: "show", id: userInstance.id)
        }
        else {
            render(view: "create", model: [userInstance: userInstance])
        }
    }
...   
}

I generated a new Grails project 1.3.2 and attached it to this issue. Steps to reproduce are as follows:

• start application with 'grails run-app [in the BootStrap.groovy there a already 2 roles that are pre-loaded]
• go to create a user and press save without filling any of the textfield os all field empty

Result will be a saved User object with blank firstName and blank email..

If i can be of any more help please let me know,
see also: http://forum.springsource.org/showthread.php?p=308098#post308098

Kind Regards,
Marco Pas

1. $i18n.getText("admin.common.words.hide")

   

   grailstest.zip

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   192 kB

   Marco Pas

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      grailstest/.../org.codehaus.groovy.eclipse.preferences.prefs 0.1 kB
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       grailstest/grails-app/.../Role.groovy 0.2 kB
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       grailstest/grails-app/.../User.groovy 0.3 kB
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       grailstest/grails-app/views/error.gsp 2 kB
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• Assignee:

  Unassigned

  Reporter:

  Marco Pas

• Created:

  07/Jul/10 8:00 AM

  Updated:

  Today 6:38 AM

  Last Reviewed:

  01/Jan/10