无法运行heroku rake db:migrate

时间:2017-03-09 13:37:14

标签: ruby-on-rails ruby postgresql heroku ruby-on-rails-5

我的应用程序完全适用于开发,但当我尝试在Heroku上提供它时,我收到以下错误:

PG::UndefinedTable: ERROR:  relation "users" does not exist
: CREATE TABLE "games" ("id" serial primary key, "title" character varying, "image" character varying, "description" character varying, "user_id" integer, "created_at" timestamp NOT NULL, "updated_at" timestamp NOT NULL, CONSTRAINT "fk_rails_de9e6ea7f7"
FOREIGN KEY ("user_id")
  REFERENCES "users" ("id")
)

当我尝试运行heroku rake db:drop, heroku rake db:reset, heroku rake db:migrate时会出现该错误。

这是我的数据库架构:

ActiveRecord::Schema.define(version: 20170305021159) do

  create_table "comments", force: :cascade do |t|
    t.string   "body"
    t.integer  "user_id"
    t.integer  "game_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.index ["game_id"], name: "index_comments_on_game_id"
    t.index ["user_id"], name: "index_comments_on_user_id"
  end

  create_table "games", force: :cascade do |t|
    t.string   "title"
    t.string   "image"
    t.string   "description"
    t.integer  "user_id"
    t.datetime "created_at",         null: false
    t.datetime "updated_at",         null: false
    t.string   "image_file_name"
    t.string   "image_content_type"
    t.integer  "image_file_size"
    t.datetime "image_updated_at"
    t.index ["user_id"], name: "index_games_on_user_id"
  end

  create_table "users", force: :cascade do |t|
    t.string   "email",                  default: "", null: false
    t.string   "encrypted_password",     default: "", null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",          default: 0,  null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string   "current_sign_in_ip"
    t.string   "last_sign_in_ip"
    t.datetime "created_at",                          null: false
    t.datetime "updated_at",                          null: false
    t.index ["email"], name: "index_users_on_email", unique: true
    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
  end

end

这是我的环境:

Rails version             5.0.2
Ruby version              2.3.1-p112 (x86_64-linux-gnu)
RubyGems version          2.5.1
Rack version              2.0.1
JavaScript Runtime        Node.js (V8)

此项目是使用rails 4创建的,后来更新为rails 5。

如何在Heroku中迁移我的数据库?

感谢阅读。

1 个答案:

答案 0 :(得分:3)

建议的方法是运行

heroku rake db:schema:load

因为它将工作模式从开发数据库加载到生产服务器。不建议使用迁移,这来自官方指南

  

迁移,尽管可能很强大,但并不是权威来源   对于您的数据库架构。该角色属于db / schema.rb或   Active Record通过检查数据库生成的SQL文件。他们   不是为了编辑而设计的,它们只代表当前的状态   数据库。

http://edgeguides.rubyonrails.org/active_record_migrations.html#schema-dumping-and-you