Question

我的模型关系设置如下：

# User model
class User < ActiveRecord::Base
  belongs_to :company
  has_many :answers
  # groups
  has_many :group_memberships
  has_many :group_questions, through: :groups, source: :questions
  has_many :groups, through: :group_memberships
  # question
  has_many :question_participants, as: :questionable
  has_many :questions, through: :question_participants

# questions created by admin
class Question < ActiveRecord::Base
  belongs_to :company
  has_many :question_participants
  has_many :answers
  has_many :users, through: :question_participants,
                   source: :questionable, source_type: 'User'
  has_many :groups, through: :question_participants,
                    source: :questionable, source_type: 'Group'
  has_many :companies, through: :question_participants,
                       source: :questionable, source_type: 'Company'

end

# user answers to questions
class Answer < ActiveRecord::Base
  belongs_to :user
  belongs_to :question
end

现在我的答案存储了user_id，回复（他们的回答）和问题ID。我现在想要创建的是一个表单，允许用户回答向他们提出的所有问题，并提交答案。

我在视图文件上设置了这样的表单（回答#new）：

<%= form_for @answer do |f| %>
  <% current_user.all_questions.each do |question| %>
    <%= f.hidden_field :question_id, value: question.id %>
    <p><%= question.name %>
    <%= f.text_field :reply %>
  <% end %>
<% end %>

哪个不起作用，我明白了 - 问题是我不知道如何让它与多次保存一起工作。

Answer 1

我希望我能解决你的问题。以下是我的建议：

<%= form_for @answer do |f| %>
  <% current_user.all_questions.each do |question| %>
    <%= hidden_field_tag 'questions[][id]', question.id %>
    <p><%= question.name %>
    <%= text_field_tag 'questions[][reply]' %>
  <% end %>
<% end %>

现在，在控制器操作中，您可以访问params[:questions]，并且您可以像这样得到：[{"id"=>"1", "reply"=>"some text 1"}, {"id"=>"2", "reply"=>"some text 2"}]：

# your_controller.rb
def create_answers
  answers = params[:questions].map do |question|
    current_user.answers.create(question_id: question[:id], reply: question[:reply])
  end

  if answers.any(&:invalid?)
    flash[:error] = 'Some answers were not accepted'
    redirect_to :back
  else
    redirect_to home_path
  end
end

允许用户以一种形式创建多个问题的答案

1 个答案: