MongoMapper 试用小记
1. 安装mongo db2. sudo mkdir -p /data/db#默认的数据库读取目录
3. 启动 mongo 服务器
sudo bin/mongod
4. gem list
mongo (0.19.1)
mongo_ext (0.19.1)
mongo_mapper (0.7.0)
5. # config/environment.rb
config.gem "mongo_mapper"
注册安装 mongo_mapper
6. 指名使用mongo数据库
# config/initializers/mongo_config.rb
MongoMapper.database = "todo-#{Rails.env}"
7. 在model中修改
class Project
include MongoMapper::Document
key :name
end
8. 数据查询tips
Project.all(:priority => 3)
Project.all(:priority.gte => 2)
Project.all(:priority.in => )
不能使用sql查询语句了，.eql .gte .in .lte
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