Grails databinding with decimal delimiter

Question

I have a problem when I use grail automatic databinding \"ex: Test t = new Test(params)\" with decimal delimiter on Double form field. After few search, I\'ve found that it

Answer 1

I have the same problem here. For example a user in Germany will usually enter a , (comma) as a decimal separator but obviously you cannot prevent him from entering a dot instead ;) Also if you fill the value from Javascript it's quite difficult to get a localized number. So I wrote this small helper method for the controller. It might not cover all possible scenarios, but I need it for entering GPS coordinates. Feel free to suggest improvements.

    /**
     * Replaces , in the param with . an converts it to a Double.
     * @param paramName an array of paramater names
     */
    private convertDicimalParamsToDouble(paramName) {
        paramName.each { it
            def val = params[it]
            if(val) {
                val = val.replace(",", ".")
                try {
                    params[it] = Double.parseDouble(val)
                } catch (NumberFormatException) {
                    //ignore
                }
                log.debug("Converted decimal param ${it} with value '${params[it]}' to new value '${val}'")
            }
        }
    }

Then call it like this for example:

def save() {        
    convertDicimalParamsToDouble(["lat", "lng"])
    ...