In this article, we’ll assist you through a step by step approach to drop a table in rails using migration and the console approach. Firstly, let’s explore the migration method.
Drop Table in Rails with Migrations
Step 1: Generate a migration
Run rails generate migration RemoveYourTable in the terminal to create a new migration file.
rails generate migration RemoveYourTable
Step 2: Edit the Migration
Open the generated migration file and use drop_table command
class RemoveYourTable < ActiveRecord::Migration[6.0]
def change
drop_table :your_table_name
end
endStep 3: Run the Migration
Type rails db:migrate in terminal to apply the changes and drop table from your database.
rails db:migrate
Step 4: Confirm Removal
Check your schema file or use the Rails console to confirm the table removal.
Step 5: Update Codebase
Find and remove any references to the dropped table in your Rails application code.
Step 6: Restart Server
Restart your Rails server to ensure changes are made in database.
rails server
Second method of dropping a table using the Rails console.
Drop a Table through rails console
Step 1: Open Your Rails Console
Open Rails console in your terminal
rails console
Step 2: Navigate To Database
Navigate to your database in terminal
ActiveRecord::Base.connection
Step 3: List Existing Tables
Type ActiveRecord::Base.connection.tables in rails console and click enter.
ActiveRecord::Base.connection.tables
Step 4: Confirm Table Presence
Double-check to ensure your target table is in the list.
Step 5: Drop The Table
Type ActiveRecord::Migration.drop_table(:your_table_name)
in rails console and click enter.
ActiveRecord::Migration.drop_table(:your_table_name)
Step 6: Confirm Deletion
Double check the tables the desired table is removed from database.
ActiveRecord::Base.connection.tables
Step 7: Exit Console
Type exit to leave the Rails console
Step 8: Update Your Codebase
Remove references to the dropped table in your Rails code.
Step 9: Restart Your Server
rails server
For other queries checkout rails documentation for dropping a table or need any assistance from our developers visit evolwix