ENH: Fixing login/registration forms and uname/pwd

The login and registration forms are now rendered as tables which looks
much nicer.  The username now can take letters, digits, period and
underscore.  The password can take letters, digits and punctuation.

1 files changed, 8 insertions, 7 deletions

diff --git a/exam/forms.py b/exam/forms.py
index 38466e8..0ae9d65 100644
--- a/exam/forms.py
+++ b/exam/forms.py
@@ -4,10 +4,10 @@ from exam.models import Profile
 from django.contrib.auth import authenticate
 from django.contrib.auth.models import User
 
-from string import letters, punctuation
+from string import letters, punctuation, digits
 
-UNAME_CHARS = letters + "."
-PWD_CHARS = letters + punctuation
+UNAME_CHARS = letters + "._" + digits
+PWD_CHARS = letters + punctuation + digits
 
 class UserRegisterForm(forms.Form):
 
@@ -23,19 +23,20 @@ class UserRegisterForm(forms.Form):
         u_name = self.cleaned_data["username"]
 
         if u_name.strip(UNAME_CHARS):
-            raise forms.ValidationError("Only letters and period character are \
-                                         allowed in username")
+            msg = "Only letters, digits, period and underscore characters are "\
+                  "allowed in username"
+            raise forms.ValidationError(msg)
 
         try:
             User.objects.get(username__iexact = u_name)
-            raise forms.ValidationError("Username already exists")
+            raise forms.ValidationError("Username already exists.")
         except User.DoesNotExist:
             return u_name
 
     def clean_password(self):
         pwd = self.cleaned_data['password']
         if pwd.strip(PWD_CHARS):
-            raise forms.ValidationError("Only letters and punctuation are \
+            raise forms.ValidationError("Only letters, digits and punctuation are \
                                          allowed in password")
         return pwd