Rails 控制台：项目（表不存在？） - Sqlite3

Question

我遇到了一个问题。我最近在 github 上克隆了一个应用程序并尝试使用 Rails 控制台启动它。当我输入其中一张表的名称时，我收到了这条消息。

Project
=> Project(Table doesn't exist)

这里是 Schema.rb 文件

ActiveRecord::Schema.define(version: 20120504152649) do

  create_table "projects", force: true do |t|
    t.string   "name"
    t.string   "point_scale",         default: "fibonacci"
    t.date     "start_date"
    t.integer  "iteration_start_day", default: 1
    t.integer  "iteration_length",    default: 1
    t.datetime "created_at"
    t.datetime "updated_at"
    t.integer  "default_velocity",    default: 10
  end

  create_table "projects_users", id: false, force: true do |t|
    t.integer "project_id"
    t.integer "user_id"
  end
end

这里是项目迁移

class CreateProjects < ActiveRecord::Migration
  def self.up
    create_table :projects do |t|
      t.string :name
      t.string :point_scale, :default => 'fibonacci'
      t.date :start_date
      t.integer :iteration_start_day, :default => 1
      t.integer :iteration_length, :default => 1

      t.timestamps
    end
  end

  def self.down
    drop_table :projects
  end
end

宝石文件

source 'http://rubygems.org'

ruby '2.1.0'

gem 'rails', '4.0.2'
gem 'sass-rails', '~> 4.0.1'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.0.1'
gem 'jquery-rails'
gem 'jbuilder', '~> 1.2'
gem 'ejs'
gem "compass-rails", "~> 1.1.2"
gem "devise", "~> 3.2.0"
gem 'transitions', '0.1.9', :require => ["transitions", "active_record/transitions"]
gem 'rails-i18n'
gem 'configuration'
gem 'rails-observers', '~> 0.1.2'
# gem 'protected_attributes'
gem 'jquery-ui-rails'

group :production do
  gem 'pg'
  # This helps with serving assets and log files on the heroku platform.
  # See https://github.com/heroku/rails_12factor
  # https://devcenter.heroku.com/articles/rails4#logging-and-assets
  gem 'rails_12factor'
end

group :development, :test do
  gem 'sqlite3'
  gem 'rspec-rails'
  gem 'factory_girl_rails'
  gem 'jasmine', '~> 1.3.2'
  gem 'capybara'

  gem 'database_cleaner'
end

这是我的 database.yml 文件

# SQLite
development:
  adapter: sqlite3
  database: db/development.sqlite3
  pool: 5
  timeout: 5000

test:
  adapter: sqlite3
  database: db/test.sqlite3
  pool: 5
  timeout: 5000

production:
  adapter: sqlite3
  database: db/production.sqlite3
  pool: 5
  timeout: 5000

我已经尝试过迁移数据库

rake db:migrate
=>undefined method `database_authenticatable' for #<ActiveRecord::ConnectionAdapters::TableDefinition:0x007fd7832ed418>/Users/richardhamilton/MyProjects/fulcrum/db/migrate/20110210082458_devise_create_users.rb:4:in `block in up'

我已经尝试过创建数据库

rake db:create
db/development.sqlite3 already exists

我已尝试加载架构

rake db:schema::load
rake aborted!
Don't know how to build task 'db:schema::load'

不知道为什么找不到表。

Answer 1

运行rake db:drop db:create db:schema:load，您应该可以正常运行了。