Question

所以我有课程＆＃39;范围＆＃39;由Datamapper创建（这是在Ruby / Sinatra项目中）：

class Range
  include DataMapper::Resource
  #properties
  property :id, Serial, :key => true
  property :default_gateway, String
  property :subnetmask, String
  property :main_ip, String
  property :backup_ip, String
  property :dhcp, String
  #relations
  belongs_to :vlan, :required => true
  has n, :dhcp
end #class Range

我还有一个文件＆＃39; initdata＆＃39;我在我的主要班级打电话。此文件的一部分尝试使用一些虚拟数据填充数据库。问题是类Ranges它给我一个ArgumentError。

Initdata ruby文件：

#CREATE RANGES
if Range.count == 0
  puts '----- ADDING RANGES -----'
  range1 = Range.first_or_create(:default_gateway => '10.1.2.44', :subnetmask => '0.0.255.255', :main_ip => '10.1.0.1', :backup_ip => '10.1.0.2', :dhcp => '192.168.1.2', :vlan_id => 1)
  range1.errors.each do |error|
    puts error
  end
end

我在终端中运行时出现以下错误：

----- ADDING RANGES -----
/home/bene/.rvm/gems/ruby-2.1.3/gems/dm-validations-1.2.0/lib/dm-validations.rb:129:in `initialize': wrong number of arguments (1 for 2..3) (ArgumentError)
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/dm-validations-1.2.0/lib/dm-validations.rb:129:in `new'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/dm-validations-1.2.0/lib/dm-validations.rb:129:in `create'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/dm-core-1.2.0/lib/dm-core/model.rb:444:in `first_or_create'
    from /home/bene/project/development_sam/lan_portal/dal/initdata.rb:328:in `<top (required)>'
    from /home/bene/project/development_sam/lan_portal/app.rb:6:in `require'
    from /home/bene/project/development_sam/lan_portal/app.rb:6:in `<top (required)>'
    from /home/bene/project/development_sam/lan_portal/config.ru:1:in `require'
    from /home/bene/project/development_sam/lan_portal/config.ru:1:in `block in <main>'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
    from /home/bene/project/development_sam/lan_portal/config.ru:in `new'
    from /home/bene/project/development_sam/lan_portal/config.ru:in `<main>'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/builder.rb:49:in `eval'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/builder.rb:49:in `new_from_string'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/server.rb:277:in `build_app_and_options_from_config'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/server.rb:199:in `app'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/server.rb:314:in `wrapped_app'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/server.rb:250:in `start'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/lib/rack/server.rb:141:in `start'
    from /home/bene/.rvm/gems/ruby-2.1.3/gems/rack-1.5.2/bin/rackup:4:in `<top (required)>'
    from /home/bene/.rvm/gems/ruby-2.1.3/bin/rackup:23:in `load'
    from /home/bene/.rvm/gems/ruby-2.1.3/bin/rackup:23:in `<main>'
    from /home/bene/.rvm/gems/ruby-2.1.3/bin/ruby_executable_hooks:15:in `eval'
    from /home/bene/.rvm/gems/ruby-2.1.3/bin/ruby_executable_hooks:15:in `<main>'

有谁知道我可能做错了什么？我已经搜索过了，但大多数解决方案都是因为人们自己写了“初始化”。函数，就像我的情况一样，它已经由DataMapper定义

Answer 1

有一个核心Ruby类Range（顺便提一下，它有一个2..3参数构造函数）;显然，如果构造函数已经存在，DataMapper不会重新定义构造函数。

您需要重命名您的课程。

在'initialize'中：参数数量错误（1为2..3）（ArgumentError）

1 个答案: