groovy pass map to javascript from controller

Question

I am fairly new to Grails MVC and javascript. I am encountering a problem wherein i want to pass a map object from the controller to a javascript function. Currently two parameters are passed to the javascript function which are comma seperated and this works fine

eg. someControllerFunction() {

    variableLink = "j-javaScriptFunction-${stringArgs1},${stringArgs2}" // This is a link for an ajax call 

}

The javascript function structure looks like this

function someJavaScriptFunction (details) {

    var d = details.split(",");
    var strintArgs1 = d[0];
    var stringArgs2 = d[1];

    ajax":{
                    "url":"${request.contextPath}/controller/methodInController?strintArgs1=" + strintArgs1 + "&stringArgs2=" +stringArgs2 
                    },
}

The Controller function which is called in the ajax currently looks like this

methodInController (String strintArgs1,String strintArgs2){

    //some operation
}

Now i want to pass a map object from the controller function to the javascript function but i am not able to as the javascript considers the map as an invalid String object.

Below are the changes i have made to the three functions but i am getting an error during the ajax call saying "Uncaught SyntaxError: Unexpected string"

eg. someControllerFunction() {

    variableLink = "j-javaScriptFunction-${stringArgs1},${stringArgs2},${mapArg}" // This is a link for an ajax call 

}

The map object looks like this

mapArg = [a:[],b:[],c:[],d:[]]

The javascript function structure looks like this

function someJavaScriptFunction (details) {

    var d = details.split(",");
    var strintArgs1 = d[0];
    var stringArgs2 = d[1];
    var mapArg = d[2];

    ajax":{
                    "url":"${request.contextPath}/controller/methodInController?strintArgs1=" + strintArgs1 + "&stringArgs2=" +stringArgs2 + "&mapArg=" +mapArg 
                    },
}

The Controller function which is called in the ajax currently looks like this

methodInController (String strintArgs1, String strintArgs2, Object mapArg){

    //some operation
}

It might be something to do with the way i am passing it to the javascript function but i am not able to figure out the exact reason. Could anyone please help me to understand what am i doing wrong. Thanks in advance

Community · Accepted Answer · 2017-05-23 11:43:57Z

1

It looks like you might have to cast the map to JSON first (which would explain why its a string). See this answer: https://stackoverflow.com/a/2064341/1902587

edited May 23, 2017 at 11:43

CommunityBot

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answered Jul 1, 2015 at 14:40

Ben March

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