Rails daily usage cheat sheet

Task	Command
Start server	rails s
Start console	rails c
Generate a db migration to add columns	rails generate migration add_column_to_some_table column_name:string... class AddColumnBankAccountNameToRequests < ActiveRecord::Migration def self.up add_column :direct_debit_requests, :bank_account_name, :string end def self.down remove_column :direct_debit_requests, :bank_account_name end end
Generate a db migration to add index	rails generate migration add_index_to_some_table class AddIndexToActionAudits < ActiveRecord::Migration def self.up add_index :action_audits, [:controller, :action, :action_failed] end def self.down remove_index :action_audits, [:controller, :action, :action_failed] end end
Generate new model	rails generate model loan_charge product:references listener_reference:string  fixed_charge:integer min_charge:integer  max_charge:integercharge_percentage:float  class CreateLoanCharges < ActiveRecord::Migration def self.up create_table :loan_charges do |t| t.references :product t.string :listener_reference t.integer :fixed_charge t.integer :min_charge t.integer :max_charge t.float :percentage_change t.timestamps end end def self.down drop_table :loan_charges end end