Grails Controller data passed to view is null when accessed on view?

StackOverflow https://stackoverflow.com/questions/13139528

Question

I have an application that has some controllers, views and layouts. I am basically trying to pass some data from the Controller to the view. The view in question uses a layout called main.gsp in the layouts folder. So I used the code below in order to try and passed the data to the view:

def index = {

        String test = "Testing"
                println(test)
        render(view:"index", name: test)
    }

Then on the view it looks like this:

<html>

<head>
    <title>My App</title>
    <meta name="layout" content="main" />
</head>

<body>

        <h1>${name}</h1>
.......

Then when I run the application I can see the print data is fine however there is no data being passed to the view, is this because there is a layout being used? if so how to I get round this? Do I access a meta object instead? Thanks in advance :-)

Was it helpful?

Solution

Try this:

def index = {
    String test = "Testing"
    println(test)
    [name: test]
}

This will render your index view by convention.

From your controller you have to pass a the model (map) to your view.

Now you could use the elements of the returned map within your view:

<h1>${name}</h1>

See the docs for further informations.

OTHER TIPS

The example from aiolos is correct, but when you really need to use the method render() with some data in model, you have to call it tis way:

render( view:'index', model: [ 'name':test ] )
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