How to return specific date format as JSON in Grails?

Question

In Grails, you can use the JSON converters to do this in the controller:

render Book.list() as JSON

The render result is

[
{\"i         


        

Answer 1

Or you could work at the Date level itself. This might not be exactly what you want but it could spark an idea for a solution that would work consistently across your whole app.

def doWithDynamicMethods = {ctx ->

  def customDateToString = {->
        def dateFormat = "dd MMM yyyy"
        def timeFormat = "hh:mm:ss a"

        def timeCheck = new java.text.SimpleDateFormat("hh:mm:ss SSS a")
        def formattedTime = timeCheck.format(delegate)
        def formatString = dateFormat
        if (formattedTime != "12:00:00 000 AM") 
                              formatString = "$formatString $timeFormat"
        def formatter = new java.text.SimpleDateFormat("$formatString")
        formatter.format(delegate)
    }

    Date.metaClass.toString = customDateToString;
    java.sql.Timestamp.metaClass.toString = customDateToString;
}