Less verbose form errors

{{cookiecutter.repo_name}}/{{cookiecutter.repo_name}}/utils.py

@@ -2,9 +2,9 @@
 '''Helper utilities and decorators.'''
 from flask import flash
 
-def flash_errors(form):
+def flash_errors(form, category="warning"):
     '''Flash all errors for a form.'''
     for field, errors in form.errors.items():
         for error in errors:
-            flash("Error in {0} field - {1}"
+            flash("{0} - {1}"
-                    .format(getattr(form, field).label.text, error), 'warning')
+                    .format(getattr(form, field).label.text, error), category)