Grails: Converting non domain class to JSON

Question

I'm attempting to convert my Map<String, TableEntry> to JSON in my controller as follows

def index() {
        // get tables
        JSON.use('deep')
        render(tables) as JSON
    }

My TableEntry is a non-domain class as I do not wish to persist it

class TableEntry {
    String teamName
    Integer gamesPlayed = 0
    Integer gamesWon = 0
    Integer gamesDrawn = 0
    Integer gamesLost = 0
    Integer points = 0

    // other methods

However, when my JSON is rendered in the client, I get the following:

'Team A':TableEntry@3b52fb28, 'Team Z':TableEntry@44e71d85

How do I get this to convert fully?

th3morg · Accepted Answer · 2014-11-01 18:59:48Z

1

Your render statement is incorrect. You have:

    render(tables) as JSON

However, it should read:

    render tables as JSON

By wrapping the variable "tables" in parenthesis, the render is happening before you can cast "tables" to JSON.

answered Nov 1, 2014 at 18:59

th3morg

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1 Comment

Burt Beckwith Over a year ago

I've had problems with that syntax too, depending on the expression complexity, so I usually use render(tables as JSON) to make sure as is applied correctly

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