Django migration error :you cannot alter to or from M2M fields, or add or remove through= on M2M fields

Question

I\'m trying to modify a M2M field to a ForeignKey field. The command validate shows me no issues and when I run syncdb :

ValueError: Cannot alter field xxx i         


        

Answer 1

I literally had the same error for days and i had tried everything i saw here but still didn'y work. This is what worked for me:

• I deleted all the files in migrations folder exceps init.py
• I also deleted my database in my case it was the preinstalled db.sqlite3 After this, i wrote my models from the scratch, although i didn't change anything but i did write it again.
• Apply migrations then on the models and this time it worked and no errors.