Ruby on Rails，从多个模型实例获取属性

Question

In my Ruby on Rails project, I have a Country model class and a Proposal model class. A country has many proposals and a proposal belongs to a specific country. Each proposal consists of 30 questions. I want to display each question for every proposal for that specific country.

My initial idea for syntax was:

<% @country.proposal.each do |proposal| %>

<% end %>

However, this resulted in an error message

undefined method `proposal' for #Country:0x007f67b51cf178

Any ideas?

Answer 1

According to yous associations, just replace @country.proposal.each with @country.proposals.each . has_many association define method with a name in plural form.