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This Readme provides the errors I fetched during doing my project and solutions.

• Problem

  • Everything was fine. My migration file already had proper foreign keys, but still occured the same error again and again. Well, after a long run, I have just figured out something. I made my parent model's migration after making the child model's migration.

• Solution

  • Don't make the child migration first. Make Parent Model's Migration, then go to the Child.
  • Ex. Profile belongs to a User. If you make Profile migration at first and then User migration, then you will get the error. Copy all migration's code, delete them, and again create the migrations- User and Profile respectively.
  • But if You did wrong already, Just rename so that parent can be the first