CODEWITHSUNDEEP
grails
John
John

Reputation: 137

passing object across controllers in grails

I have the domain classes TestUnit, TestParameter and ParameterRange as shown below.

class TestUnit {
    static hasMany = [testParameters : TestParameter]
}

class TestParameter {
    static hasMany = [paramRanges : ParameterRange ]
    static belongsTo = [testUnit : TestUnit]
}

class ParameterRange {
    static belongsTo = [testParam : TestParameter]
}

I want to add the TestUnit object (i.e, testUnitInstance.id) in the ParameterRangeController.

Since i'm new to grails i don't know how to do that could anyone please explain it to me?

What I've tried:

def testUnitId = params.testUnitId 
def testUnitInstance = TestUnit.get(testUnitId) 
def testParameterInstance = TestParameter.get(params.id) 
[parameterRangeInstanceList: testParameterInstance.paramRanges, parameterRangeInstance: new ParameterRange(),testParameterInstance:testParameterInstance, page:"Range", testUnitInstance:testUnitInstance]

Upvotes: 0

Views: 121

Answers (1)

user800014
user800014

Reputation:

You can manipulate more than one domain class in a controller or service, there's no restriction to that.

class ParameterRangeController {
  def show() {
    //you can get other domain classes...
    TestUnit theUnit = TestUnit.get(1)
    render view: 'show', model: [theUnit:theUnit, ...]
  }
}

Since TestUnit is related to TestParameter, you can also access it like:

ParameterRange range = ParameterRange.get(1)
println range.testParam.testUnit

I suggest you to take a look in the docs about GORM, there's a lot of useful info.

Upvotes: 2

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