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

Git daily usage cheat sheet

Task	Command
Initialize a new git repository	git init
View local branches	git branch
Create new local branch	git branch [new_branch_name]
Delete local branch	git branch -d [branch_name]
Switch to a branch	git checkout [branch_name]
Add files to git	git add .
Undo all current changes.	git checkout .
Commit changes	git commit -a -m "Log message"
Show git logs	git log
Push local to remote	git push origin [branch_name]
Pull from remote	git pull origin [branch_name]
Merge branch	git merge [from_branch]
Show diff	git diff
Show all branches	git branch -a
Fix a tagged release	git checkout -b [tag_name]_fixes [tag_name] OR (for getting a remote branch) git checkout -b [new_local_branch] origin/[remote_branch] e.g. git checkout -b myfeature origin/myfeature
Create a new tag	git tag [tag_name]
Push tags to remote	git push --tags
Overwrite existing tag	git tag -f [tag_name]
Delete tag	git tag -d 12345 git push origin :refs/tags/12345
Merge individual commits	git cherry-pick [commit_hash]
Stashing	git stash git stash apply git stash list
Create an empty repository	git --bare init
Adding a remote repository	git remote add origin [server_name]:[directory_name]

Checkout a single file on another branch:
$ git checkout branch_name file_full_path

More on: http://gitref.org/index.html

Capistrano cheat sheet

Description	Command
List cap details	cap -T
backup database	cap bullitt db:backup:adhoc
Deployment without migration	cap bullitt deploy
Deployment with migrations	cap bullitt deploy:migrations