ruby-on-rails – 设置默认数据库连接Rails

我的rails应用程序有自己的 MySql数据库(并且需要mysql2 gem),但也需要与一个特定模型的外部MongoDB数据库连接(因此我在Gemfile中包含了mongoid和bson_ext).现在,当我尝试为一个新的模型生成一个迁移时,它告诉我

$rails g migration CreateLocations
       error  mongoid [not found]

当我生成位置模型时,它包含了Mongoid :: Document,所以Rails显然认为它正在使用外部数据库作为主数据库.

databse.yml：

development:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: associalize_development
  pool: 5
  username: root
  password:
  socket: /tmp/mysql.sock

mongoid.yml：

development:
  host: pearl.mongohq.com
  port: 27019
  username: asfasdf
  password: sadfasdf
  database: app4574678

test:
  host: pearl.mongohq.com
  port: 27019
  username: asdfadhasdfa
  password: hadsadfas
  database: app4574678

production:
  host: pearl.mongohq.com
  port: 27019
  username: asdfdfsasda
  password: afdasdfdasdf
  database: app4574678

UPDATE
使用Mongo的模型

class ExternalMongoModel
  include Mongoid::Document

  field :title
  field :long_title
  field :deal_type
  field :merchandise_type
  field :market_id
  field :market_name
  field :market_location,type: Array
  field :featureType
  field :country_code
  field :subtitle
  field :offer_ends_at
  field :price
  field :value
  field :merchant_type
  field :content
  field :merchant

  index(
    [[:division_latlon,Mongo::GEO2D]],background: true
  )

end

解决方法

将其添加到config / application.rb中的应用程序块中：

config.generators do |g|
  g.orm :active_record
end

(找到的解决方案here)