Willian questions

Willian answers

• Get previous value of a field in post_save signal
• Persisting session variables across login
• Making email field unique with Django User admin
• Load balance (or http proxy) by the logged in user of a Django app?
• Passing Instance to Django formset
• Mongoengine creation_time attribute in Document
• Convert, or unformat, a string to variables (like format(), but in reverse) in Python
• How to download a file uploaded using django-filebrowser?