Reworked some computes forms and views

computes/validators.py

@@ -0,0 +1,24 @@
+from django.core.exceptions import ValidationError
+
+from django.utils.translation import ugettext_lazy as _
+import re
+
+have_symbol = re.compile('[^a-zA-Z0-9._-]+')
+wrong_ip = re.compile('^0.|^255.')
+wrong_name = re.compile('[^a-zA-Z0-9._-]+')
+
+
+def validate_hostname(value):
+    sym = have_symbol.match(value)
+    wip = wrong_ip.match(value)
+
+    if sym:
+        raise ValidationError(_('Hostname must contain only numbers, or the domain name separated by "."'))
+    elif wip:
+        raise ValidationError(_('Wrong IP address'))
+
+
+def validate_name(value):
+    have_symbol = wrong_name.match('[^a-zA-Z0-9._-]+')
+    if have_symbol:
+        raise ValidationError(_('The host name must not contain any special characters'))