Passing parameters to the View - From Grails to Javascript

Question

From my Controller i am passing a parameter to the view.

When i print the parameter from the Body it gets printed correctly. However, if i try to print the parameter from a Javascript function it doesn't work.

How can i correct this ?

Controller

def showpeople(Long id){
        def pInstance = People.get(id)
        render (view: "showpeople",model: [pInstance: pInstance])

    }

View

<script>
$(document).ready(function(){ 
var str = ${pInstance.stringval}; // <--- DOESN'T WORK  
alert (str); // <--- DOESN'T SHOW ALERT  

)}
</script>

<body>
${pInstance.stringval} <--- PRINTS SUCCESSFULLy 
</body>

var str = '${pInstance.stringval}'; If it's a string you need to wrap it in quotes of some sort or the javascript will choke on it. — Joshua Moore
– Joshua Moore, Commented Oct 7, 2014 at 17:34

Joshua Moore · Accepted Answer · 2014-10-07 17:36:24Z

2

The reason why your alert doesn't show is you are outputting that value as a constant instead of a valid String within javascript. You really need to wrap it in quotes and you should also encode the string value for use with javascript.

For example:

var str = '${pInstance.stringval?.encodeAsJavaScript()}';
alert(str);

answered Oct 7, 2014 at 17:36

Joshua Moore

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