我的rails应用程序有自己的MySql数据库(并且需要mysql2 gem),但是还需要为一个特定模型连接外部MongoDB数据库(因此我在Gemfile中包含了mongoid和bson_ext)。现在,当我尝试为新模型生成迁移时,它告诉我
$ rails g migration CreateLocations
error mongoid [not found]
当我生成Location模型时,它包含Mongoid :: Document,因此Rails显然认为它使用外部数据库作为我的主数据存储区。
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
更新 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
答案 0 :(得分:27)
将其添加到config / application.rb中的Application块:
config.generators do |g|
g.orm :active_record
end
(找到解决方案here)
答案 1 :(得分:19)
如果您不想更改config / application.rb,可以在生成模型时使用它:
rails generate active_record:migration
如果更改application.rb文件,要调用mongoid生成器,比如模型“contacts”,可以使用:
rails g mongoid:model contacts
答案 2 :(得分:4)
首先检查以下块是否存在于rails应用程序的config / application.rb文件中
config.generators do |g|
g.orm :active_record
end
如果没有添加,或者你可以运行
rails g active_record:migration