rails change column type string to integer

To change a column type from string to integer in Ruby on Rails, follow these steps:

  1. Generate a migration file: Run the following command in the terminal to create a new migration file: rails generate migration ChangeColumnType

  2. Open the migration file: Navigate to the newly generated migration file located in the db/migrate directory. The file should be named something like timestamp_change_column_type.rb.

  3. Modify the migration file: Inside the migration file, add the following code within the change method: ruby def change change_column :table_name, :column_name, 'integer USING CAST(column_name AS integer)' end Replace table_name with the name of the table containing the column you want to change, and column_name with the name of the actual column.

  4. Run the migration: Execute the following command in the terminal to apply the migration and update the column type: rails db:migrate

After running the migration, the column type should be successfully changed from string to integer. Remember to adapt the code to your specific table and column names.