On Mon, Jul 4, 2011 at 1:46 PM, Sarah Diehl <di...@immunbio.mpg.de> wrote:
> Hello,
> in the config of a tool I want to integrate into Galaxy I would like to have
> a parameter with the following properties:
> <param name="var" type="integer" label="Var" value="50" optional="true"
> min="10" max="100" />
> So it should be possible to leave this field empty, but when you choose to
> enter a number it should be between 10 and 100.
> The problem now is that Galaxy refuses to accept it when this field is
> empty.

Which version of Galaxy are you running? Optional float and integer
parameters was only recently made possible under issue 403 with an
initial fix committed two weeks ago,


> After encountering this problem I tried to solve the issue within Cheetah
> and tried the following:
> #if $var.value < 10 or $var.value > 100
> #set $var.value = ""
> #end if

You'd need to try something like this:

#if int($var.value) < 10 or int($var.value) > 100
#set $var.value = ""
#end if

but you also have to first exclude the case where is is already empty
as then int would fail.

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