[SOLVED] How do I render a field in the gsp page from another domain?

How do I render a field in the gsp page from another domain?

Here is my scenario:

Class Domain1 {
  static hasMany=[ tests : Domain2 ]
  static constraints = { tests(nullable: true) }
}

And

Class Domain2 {
  Double t1, String t2
  static constraints={
    t1(nullable:true
    t2(nullable:false,blank:false)
  }
}

I need to display t1 from domain2 in domain1 with the ability to edit.

Solution

I need to display t1 from domain2 in domain1 with the ability to edit.

See the project at https://github.com/jeffbrown/samdomain.

grails-app/domain/samdomain/Domain1.groovy:

package samdomain

class Domain1 {
    static hasMany = [tests: Domain2]
}

grails-app/domain/samdomain/Domain2.groovy:

package samdomain

class Domain2 {
    Double t1
    String t2

    static constraints = {
        t1 nullable: true
    }
}

grails-app/controllers/samdomain/DemoController.groovy:

package samdomain

class DemoController {

    def index() {
        def d1 = new Domain1()
        d1.addToTests t1: 42, t2: 'Fourty Two'
        d1.addToTests t1: 2112, t2: 'Twenty One Twelve'

        [domainInstance: d1]
    }

    def update() {
        render "Updated values: ${params.t1Values}"
    }
}

grails-app/views/demo/index.gsp:

<%@ page contentType="text/html;charset=UTF-8" %>
<html>
<head>
    <meta name="layout" content="main"/>
    <title>Simple Demo</title>
</head>

<body>

<g:form action="update" method="POST">
    <table>
    <g:each var="d2" in="${domainInstance.tests}">
        <tr>
            <td>${d2.t2}</td>
            <td><g:textField name="t1Values" value="${d2.t1}"/></td>
        </tr>
    </g:each>
    </table>
    <g:submitButton name="Update"/>
</g:form>
</body>
</html>