has_many :through 关联的 Rails 复选框
一个人可以参加各种赛事，但他们必须输入该赛事的合作伙伴的名字。该关联存储在一个条目中，该条目包含一个合作伙伴姓名字段。
class Person < ActiveRecord::Base
has_many :entries
has_many :events, :through => :entries
validates_presence_of :name
end
class Event < ActiveRecord::Base
end
class Entry < ActiveRecord::Base
belongs_to :person
belongs_to :event
validates_presence_of :partner_name
end
问题是：如何创建一个单页表单，允许一个人在多个事件中输入自己并输入其合作伙伴的姓名？我尝试在人员模型中实现一个 all_entries 方法，该方法将返回所有可用事件的条目对象数组，以及一个 all_entries_attributes 方法，该方法将更新、创建，并删除条目对象，但我似乎找不到一个好的、干净的方法来做到这一点。我知道这是一个相当开放式的问题，但这一定是 Rails 社区中其他人以前遇到过的模式，所以我希望有一个好的解决方案。
A person can compete in various events, but they must enter a partner's name for that event. This association is stored in an entry, which contains a field for the partner's name.
class Person < ActiveRecord::Base
has_many :entries
has_many :events, :through => :entries
validates_presence_of :name
end
class Event < ActiveRecord::Base
end
class Entry < ActiveRecord::Base
belongs_to :person
belongs_to :event
validates_presence_of :partner_name
end
The question is: How do you create a single page form that allows a person to enter themselves in multiple events and input their partners' names? I've tried to implement an all_entries method in the person model that will return an array of entry objects for all the available events, and an all_entries_attributes method that will update, create, and delete entry objects, but I can't seem to find a good, clean way to do this. I know this is a rather open ended question, but this must be a pattern that someone else in the rails community has encountered before, so I'm hoping there is a good solution to it.
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如果您仍在寻找答案，您可能需要查看我的 问题 和 答案< /a> 我发现的。
If you are still looking for the answer you might want to check out my question and answer that I found.
因此，您需要一个页面，您可以在其中为用户创建事件，并将人员添加到这些事件中，
我不会给您一个简单的解决方案，因为需要执行一些工作，但我建议您查看这些有关嵌套的railscast模型表单
part1 和 第 2 部分
So you want a page in which you can create events for a user, and add people to those events
I won't give you a plain solution because there's some work to an implementation for this, but I will recommend checking out these railscasts about nested model forms
part1 and part2