Validation fixes for tracks/color and session_types/length (#9006)

Author: norbusan

app/api/schema/session_types.py

@@ -26,6 +26,11 @@ class Meta:
 
     @validates_schema
     def validate_length(self, data):
+        if 'length' not in data:
+            raise UnprocessableEntityError(
+                {'pointer': '/data/attributes/length'},
+                "Length attribute is missing",
+            )
         try:
             datetime.strptime(data['length'], '%H:%M')
         except ValueError:

app/api/schema/tracks.py

@@ -26,6 +26,11 @@ class Meta:
 
     @validates_schema
     def valid_color(self, data):
+        if 'color' not in data:
+            raise UnprocessableEntityError(
+                {'pointer': '/data/attributes/color'},
+                "Color attribut is required",
+            )
         if not re.search(r'^#(?:[0-9a-fA-F]{3}){1,2}$', data['color']):
             raise UnprocessableEntityError(
                 {'pointer': 'data/attributes/color'},