title: How to customize Django loaddata so can perform logic before loading the model data
body: <p>I backed up DB with <code>manage.py dumpdata</code>, I now have a file I wish to use with <code>manage.py loaddata</code>, but I wish to perform some customised logic to the data before loading it. This is because I am migrating the data to a different structure. How does one get the data into python objects so I can perform my customised logic?</p>