Avoid translation of error messages in field init with min/max value.

rest_framework/fields.py

@@ -738,11 +738,9 @@ class CharField(Field):
         self.min_length = kwargs.pop('min_length', None)
         super(CharField, self).__init__(**kwargs)
         if self.max_length is not None:
-            message = self.error_messages['max_length'].format(max_length=self.max_length)
-            self.validators.append(MaxLengthValidator(self.max_length, message=message))
+            self.validators.append(MaxLengthValidator(self.max_length))
         if self.min_length is not None:
-            message = self.error_messages['min_length'].format(min_length=self.min_length)
-            self.validators.append(MinLengthValidator(self.min_length, message=message))
+            self.validators.append(MinLengthValidator(self.min_length))
 
     def run_validation(self, data=empty):
         # Test for the empty string here so that it does not get validated,
@@ -893,11 +891,9 @@ class IntegerField(Field):
         self.min_value = kwargs.pop('min_value', None)
         super(IntegerField, self).__init__(**kwargs)
         if self.max_value is not None:
-            message = self.error_messages['max_value'].format(max_value=self.max_value)
-            self.validators.append(MaxValueValidator(self.max_value, message=message))
+            self.validators.append(MaxValueValidator(self.max_value))
         if self.min_value is not None:
-            message = self.error_messages['min_value'].format(min_value=self.min_value)
-            self.validators.append(MinValueValidator(self.min_value, message=message))
+            self.validators.append(MinValueValidator(self.min_value))
 
     def to_internal_value(self, data):
         if isinstance(data, six.text_type) and len(data) > self.MAX_STRING_LENGTH:
@@ -927,11 +923,9 @@ class FloatField(Field):
         self.min_value = kwargs.pop('min_value', None)
         super(FloatField, self).__init__(**kwargs)
         if self.max_value is not None:
-            message = self.error_messages['max_value'].format(max_value=self.max_value)
-            self.validators.append(MaxValueValidator(self.max_value, message=message))
+            self.validators.append(MaxValueValidator(self.max_value))
         if self.min_value is not None:
-            message = self.error_messages['min_value'].format(min_value=self.min_value)
-            self.validators.append(MinValueValidator(self.min_value, message=message))
+            self.validators.append(MinValueValidator(self.min_value))
 
     def to_internal_value(self, data):
 
@@ -980,11 +974,9 @@ class DecimalField(Field):
         super(DecimalField, self).__init__(**kwargs)
 
         if self.max_value is not None:
-            message = self.error_messages['max_value'].format(max_value=self.max_value)
-            self.validators.append(MaxValueValidator(self.max_value, message=message))
+            self.validators.append(MaxValueValidator(self.max_value))
         if self.min_value is not None:
-            message = self.error_messages['min_value'].format(min_value=self.min_value)
-            self.validators.append(MinValueValidator(self.min_value, message=message))
+            self.validators.append(MinValueValidator(self.min_value))
 
     def to_internal_value(self, data):
         """
@@ -1534,11 +1526,9 @@ class ListField(Field):
         super(ListField, self).__init__(*args, **kwargs)
         self.child.bind(field_name='', parent=self)
         if self.max_length is not None:
-            message = self.error_messages['max_length'].format(max_length=self.max_length)
-            self.validators.append(MaxLengthValidator(self.max_length, message=message))
+            self.validators.append(MaxLengthValidator(self.max_length))
         if self.min_length is not None:
-            message = self.error_messages['min_length'].format(min_length=self.min_length)
-            self.validators.append(MinLengthValidator(self.min_length, message=message))
+            self.validators.append(MinLengthValidator(self.min_length))
 
     def get_value(self, dictionary):
         if self.field_name not in dictionary:

tests/test_bound_fields.py

@@ -39,7 +39,7 @@ class TestSimpleBoundField:
         serializer.is_valid()
 
         assert serializer['text'].value == 'x' * 1000
-        assert serializer['text'].errors == ['Ensure this field has no more than 100 characters.']
+        assert serializer['text'].errors == ['Ensure this value has at most 100 characters (it has 1000).']
         assert serializer['text'].name == 'text'
         assert serializer['amount'].value is 123
         assert serializer['amount'].errors is None