Django override default form error messages

Question

How can I overwrite the default form error messages (for example: need them in other language) for the all apps in my project (or at least for 1 app)

Thanks!

Answer 1

from ProDjango book:

from django.forms import fields, util


class LatitudeField(fields.DecimalField):  
    default_error_messages = {
        'out_of_range': u'Value must be within -90 and 90.',
    }


    def clean(self, value):  
        value = super(LatitudeField, self).clean(value)  
        if not -90 <= value <= 90:  
            raise util.ValidationError(self.error_messages['out_of_range'])
        return value