不使用MongoMapper范围的投掷的错误列表数据<勇敢的::查询状态：“活动”>

Question

其实我已经创建使用mongomapper概念两型我为主动获取作者，但是像

其投掷的错误提到范围

模型1：

class Author 
    include MongoMapper::Document   

    key :name, String 
    key :status, String 

    validates_presence_of :name 
    many :books 

    scope :active, where(:status => 'Active') 

end 

模型2：

class Book 
    include MongoMapper::Document   

    key :title 
    key :author_id, ObjectId 
    key :status, :default => 'Active' 

    validates_presence_of :title 

    belongs_to :author 

    scope :active, where(:status => 'Active') 

end 

检视：

Author.active.collect{|a| [a.name,a.id]} 

Answer 1

随着您提供的模型，查看查询适用于我的一个简单的例子。

测试/单位/ author_test.rb

require 'test_helper' 

class AuthorTest < ActiveSupport::TestCase 
    def setup 
    Author.delete_all 
    Book.delete_all 
    end 

    test "scope active" do 
    puts "\nMongoMapper::Version:#{MongoMapper::Version}" 
    Author.create(name: 'J. K. Rowling', status: 'Active') 
    a = Author.active.collect{|a| [a.name,a.id]} 
    assert_equal("J. K. Rowling", a.first.first) 
    p a 
    end 
end 

$耙测试

运行选项：

# Running tests: 

[1/1] AuthorTest#test_scope_active 
MongoMapper::Version:0.12.0 
[DEPRECATED] The 'safe' write concern option has been deprecated in favor of 'w'. 
[["J. K. Rowling", BSON::ObjectId('535966d77f11ba2632000001')]] 
Finished tests in 0.058895s, 16.9794 tests/s, 16.9794 assertions/s. 
1 tests, 1 assertions, 0 failures, 0 errors, 0 skips