CODEWITHSUNDEEP
grailsenumscommand
Sajeev Zacharias
Sajeev Zacharias

Reputation: 167

Grails Binding between multiselect, enum , command object and domain class

I am working on a project which uses a multiselect field.

My domain class is defined as:

class RoomWanted{

  Set<MateAgeRange> mateAgeRanges

}

Then:

public enum MateAgeRange {
   TWENTIES('18-29')
   ,THIRTIES('30-39')
   ,FOURTIES("40-49")
   ,FIFTIES("50-59")
   ,SIXTIES("60+")



    final String value

    private MateAgeRange(String value) {
        this.value = value
    }

    String toString() { value }
    String getKey() { name() }


    static belongsTo=[roomWanted:RoomWanted]
}

My command object is:

class RoomWantedDetailsCommand implements Serializable {

      Set<MateAgeRange> mateAgeRanges
}

I want to have the create page, edit page, show page

Here is my create page

<g:select name="mateAgeRanges" multiple="true" from="${MateAgeRange?.values()}"  optionKey="key" />

My command object 'cmd' gets the value 

print cmd.mateAgeRanges

gives the value [30-39, 50-59] when I select these two.

But it does not bind to the field in the domain class. In the show page, if I use cmd.mateAgeRanges it returns [].

Upvotes: 0

Views: 1030

Answers (2)

Sajeev Zacharias
Sajeev Zacharias

Reputation: 167

The domain class should be defined as: 

class RoomWantedDetailsCommand implements Serializable {

      Set<MateAgeRange> mateAgeRanges

      static hasMany = [ mateAgeRanges:MateAgeRange ]
}

Enum is defined as:

public enum MateAgeRange {
   TWENTIES('18-29')
   ,THIRTIES('30-39')
   ,FOURTIES("40-49")
   ,FIFTIES("50-59")
   ,SIXTIES("60+")



final String value

private MateAgeRange(String value) {
    this.value = value
}

String toString() { value }
String getKey() { name() }


static belongsTo=[roomWanted:RoomWanted]
}

In the edit page:

  <g:select name="mateAgeRanges" multiple="true" from="${MateAgeRange?.values()}" optionKey="key" value="${roomWanted?.mateAgeRanges}"/>

In the show page: ${roomWanted?.mateAgeRanges }

In the create page

Upvotes: 1

injecteer
injecteer

Reputation: 20717

add hasMany to your RoomWanted class

class RoomWanted{

  Set<MateAgeRange> mateAgeRanges

  static hasMany = [ mateAgeRanges:MateAgeRange ]

}

if you don't, GORM doesn't fill this association in full-auto.

Then you should use roomWanted.addToMateAgeRanges(..) to fill-in the values

Upvotes: 0

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