Question

I’m facing a problem with the syntax for IF conditions in grails.

This is the code:

int ab = 9999
    println(ab+"ab")
    println(params.username+"parameter")


    if (params.username == ab)
    {
        println("hello")
    }
    else
    {
        println("fail")
    }

This is the codes in GSP:

<form>
Username:<g:textField name ="username"></g:textField>
 <g:actionSubmit value="Submit" action="abc" type="button"/>
</form>

The result is:

9999ab
9999parameter
fail

So the problem is, I want the codes to print hello. But whenever I key in the “9999” in username textfield. It just doesn’t go through the condition and immediately goes to else. Anybody knows what is going on?
Thank you so much

Answer 1

You are trying to compare a String with a int, you can do the following:

def ab = "9999"

if (params.username == ab)
{
    println("hello")
}
else
{
    println("fail")
}

Or if you want to compare integers:

int ab = 9999


if (params.int(username) == ab)
{
    println("hello")
}
else
{
    println("fail")
}