Don't filter inputs, add a validator for RF Gain

owrx/form/input/validator.py

@@ -12,3 +12,15 @@ class RequiredValidator(Validator):
     def validate(self, key, value):
         if value is None or value == "":
             raise ValidationError(key, "Field is required")
+
+class RangeValidator(Validator):
+    def __init__(self, minValue, maxValue):
+        self.minValue = minValue
+        self.maxValue = maxValue
+
+    def validate(self, key, value):
+        if value is None or value == "":
+            return # Ignore empty values
+        n = float(value)
+        if n < self.minValue or n > self.maxValue:
+            raise ValidationError(key, 'Value must be between %s and %s'%(self.minValue, self.maxValue))