Migration to create table raises Mysql2::Error: Table doesn't exist

Question

I wrote a migration with the following:

class CreateTableSomeTable < ActiveRecord::Migration[5.1]
  def change
    create_table :some_tables do |t|
               


        

Answer 1

This drove me nuts, I think I was seeing a different reason for this than what others suggested. In my case it happened because my migration file names didn't exactly match the migration class therein. For example, I had a migration file named 20171205232654_bonus.rb but inside the class was declared as class CreateBonus < ActiveRecord::Migration[5.1]. Once I changed the file name to 20171205232654_create_bonus.rb everything worked.

This might have something to do with the fact that I've been creating migrations only, not full scaffolds, and maybe I did something wrong. I really don't know how I wound up with that mismatch.