Fantastic4

Project Description

Fantastic visual voting application for events. Create an event-based online polling platform that allow users to share, vote and discover interesting things.

Members

Yuxi Chen	Niyan Ying	Yao-Jen Chang	Qianyun Zhu
@muxin	@Tiffanyyny	@autekroy	@sunnyuny

Pivotal Tracker Link

https://www.pivotaltracker.com/n/projects/1321156

Dev Memo

Common rake commands

• rake db:migrate VERSION=20080906120000
  • run the required migrations until it has reached the specified version
• rake db:rollback
  • rollback the last migration
• rake db:setup
  • create the database, load the schema and initialize it with the seed data
• rake db:reset
  • drop the database and set it up again. equivalent to rake db:drop db:setup
• rake db:migrate
  • runs the change method for all the migrations that have not yet been run

Change an existing table schema

1. Generate new migration file under db/migrate

• rails g migration ChangeTableOnSomeAttributes

2. Modify db/migrate/XXXXXXXX_change_table_on_some_attributes.rb file to include the changes

class ChangeTableOnSomeAttributes < ActiveRecord::Migration
  def change
    change_column :posts, :vote_count, :integer
    change_column_null :posts, :vote_count, false
    change_column_default :posts, :vote_count, 0
  end
end

3. rake db:migrate
4. Check corresponding changes in file db/schema.rb
5. Modify file db/seeds.rb to follow new table schema
6. rake db:reset