Added IpField and little fixes in basic fields

paramecio/cromosoma/corefields.py

@@ -21,6 +21,7 @@ class IntegerField(PhangoField):
                 self.error=True
         except:
             
+            value=""
             self.error=True
 
         return value

paramecio/cromosoma/extrafields/emailfield.py

@@ -13,6 +13,7 @@ class EmailField(CharField):
         if not mail_pattern.match(value):
             
             self.error=True
+            value=""
             self.txt_error='No valid format'
             
         return value

paramecio/cromosoma/extrafields/ipfield.py

@@ -0,0 +1,18 @@
+from paramecio.cromosoma.corefields import CharField
+import ipaddress
+
+class IpField(CharField):
+    
+    def check(self, value):
+        
+        try:
+        
+            value=str(ipaddress.ip_address(value))
+        
+        except:
+            
+            self.error=True
+            value=""
+
+            
+        return value