Ruby on rails 如何实例化具有多个属性的Mongoid模型
我不确定如何实例化属于多个对象的对象:Ruby on rails 如何实例化具有多个属性的Mongoid模型,ruby-on-rails,ruby-on-rails-4,mongoid4,Ruby On Rails,Ruby On Rails 4,Mongoid4,我不确定如何实例化属于多个对象的对象: class Project ... belongs_to :project_lead, :class_name => 'User' has_many :users, :class_name => 'User' has_many :comments end class Comment ... belongs_to :
class Project
...
belongs_to :project_lead, :class_name => 'User'
has_many :users, :class_name => 'User'
has_many :comments
end
class Comment
...
belongs_to :author, :class_name => 'User', inverse_of: :comments
belongs_to :project, :class_name => 'Project', inverse_of: :projects
embeds_many :replies, :class_name => 'Reply'
end
class User
...
has_many :comments, :class_name => 'Comment', inverse_of: :author
has_many :projects, :class_name => 'Project', inverse_of: :project_lead
has_many :replies, :class_name => 'Reply'
end
class Reply
...
belongs_to :author, :class_name 'User'
embedded_in :comment
end
基本上,项目必须属于用户。一个项目可以有许多评论(必须属于一个用户),反过来,每个评论可以有许多回复(也必须属于一个用户)
在我的projects\u controller.rb中,我有以下内容:
def new
@user = current_user #that works fine
@project = @user.projects.new # works fine
@comment = @user.projects.comments.new #doens't work
end
然而,我不知道如何使这项工作。我见过很多Mongoid模型的例子,但没有这种连接/复杂性。有可能/可以看到吗?如果没有,还有什么选择?谁能给我指出正确的方向吗
非常感谢如何@comment=@project.comments.new
您可以使用@project以注释形式构建注释对象
您可以将用户id作为隐藏值存储在comments视图中,如
#comments/_form.html.erb
<%= form_for([@project, @project.comments.build]) do |f| %>
<%= f.hidden_field :user_id, value: current_user.id %>
#注释/_form.html.erb
当您执行@comment=@user.projects.comments.new
@user.projects是数组时。
希望它对你有用