hello, just as additional information:
sev-en [1] allows to validate null values without the need of the required attribute. furthermore, it allows cross-validation. e.g.: @RequiredIf [2] sev-en is ready to use, however, it's still beta. please include that in your considerations. regards, gerhard [1] http://os890.blogspot.com/search/label/sev-en [2] http://os890.blogspot.com/2008/06/sev-en-requiredif.html 2008/6/7 Guy Bashan <[EMAIL PROTECTED]>: > Thanks Simon, > > I implemented this specific validation the action method. > > Guy. > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Friday, June 06, 2008 11:05 AM > To: MyFaces Discussion > Subject: Re: [Faces][Core] > > Guy Bashan schrieb: > > > > Hi All, > > > > > > > > I have two fields that gets integer values. When user inputs data only > > numbers are allowed. When user leaves field, I add grouping seperators > > automatically (with JS). > > > > Now, the fields have one converter that converts the value with > > thousands separator to integer value. If no data entered converter > > returns null, if text data is entered (though I block it with JS, by > > doing copy paste it is still possible), it return Double.NaN. > > > > In addition, each field has a validator (the same validator) that > > checks that data is valid, by testing if value is: Double.NaN and > > setting proper error message. > > > > The second field has an additional validator that validates that BOTH > > fields are not empty. If both are empty it returns an error message. > > > > > > > > It seems like when both fields are empty the validators are not > > activated. I assume this is because my converter returns null value > > for the empty fields (in the getAsObject method). Should I return some > > none-null value in order for validators to be activated? > > > > Validators are never run on null values. The only validation that > applies then is checking the "required" flag. > > So yes if you want your validator to run, your converter will need to > return some non-null value. But doing multiple-field validation within a > validator attached to one field is probably not the right way to do > this; it was not what JSF validators were designed for. I would suggest > doing this sort of validation in your action method instead. > > Check the myfaces wiki; I have a vague memory of a page that talks about > cross-field validation. And also a vague memory that someone wrote a > framework to do this. > > Regards, > Simon > > -- http://www.irian.at Your JSF powerhouse - JSF Consulting, Development and Courses in English and German Professional Support for Apache MyFaces
