Question

我有两个模型：Activity和Comment。 Comment belongs_to :activity和Activity has_many :comments。对于建筑活动，我已经遵循了Railscast (Activity feed from scratch)

所以，我正在使用activity_presenter.rb

class ActivityPresenter < SimpleDelegator
  attr_reader :activity

  def initialize(activity, view)
    super(view)
    @activity = activity
  end

  def render_activity
    div_for activity do
      link_to((gravatar_for activity.user, {size: 20}) + activity.user.name, activity.user) + ' ' + render_partial
    end
  end

  def render_partial
    locals = {activity: activity, presenter: self}
    locals[activity.trackable_type.underscore.to_sym] = activity.trackable
    render partial_path, locals
  end

  def partial_path
    partial_paths.detect do |path|
      lookup_context.template_exists? path, nil, true
    end || raise("No partial found for activity in #{partial_paths}")
  end

  def partial_paths
    [
        "activities/#{activity.trackable_type.underscore}/#{activity.action}",
        "activities/#{activity.trackable_type.underscore}",
        "activities/activity"
    ]
  end
end

使用_activities_feed.rb条件呈现@activities.each do |activity|部分。

在这部分我有3个街区：

activity form for activity用于更新目的
activity.comments阻止each do |comment|
activity.comments.new（表格）

这是一个问题。我需要渲染Activity.comments和表单以便从comments控制器创建新评论，因为我在一个视图中有2个表单，有2个submit按钮，它们调用2 update或create行动。当然，我需要它来改善应用程序逻辑。

但是我无法从activity发送@activities.each do |activity| comments_controller，我在这部分地方使用了@activity = Activity.find(params[:id])。

我尝试将@comment = Activity.comments.new(params[:activity_id])，@comments = Activity.comments.all，activities添加到comments和activity控制器，并将@activity更改为{ {1}}和activity.comments.new到@comment。但它没有帮助。我想，我不理解控制器之间交互的基本逻辑，但找不到我的错误。

因此，我的activities_controller index行动是：

@activities = Activity.order('updated_at DESC')

在comments_controller我只有create和destroy行动，这些行动都可以。

感谢您的帮助！

UPD：

这是我的_activities_feed.rb结构：

<% @activities.each do |activity| %>
  <%= form_for activity, remote: true do |a| %>
    <%= ActivityPresenter.new(activity, self).render_activity %>
    .
    .         
    .
    <%= link_to ... class: 'add_comment', remote: true %> # Shows activity.new.comment form
    <%= link_to ... 'Edit' ... %> # edit activity link
    <%= a.submit 'Update' %> # first submit button for submitting activity changes
    .
    .
    .
    <% activity.comments.each do |comment| %> # activity.comments block
       <%= comment.text %>
       <%= link_to comment.user.name, comment.user %>
    <% end %>
    .
    .
    .
    <%= form_for activity.comments.new, remote: true do |f| %> # form for adding comment
       <%= f.text_area :text, 'rows' => '2', class: 'comment_text' %>
       <%= f.button 'Cancel', class: 'btn comment_cancel', type: 'button' %>
       <%= f.submit 'Post', class: 'btn btn-primary', controller: 'comments' %> # second submit button
       <%= f.hidden_field :activity_id, value: activity.id %>
    <% end %>
  <% end %>
<% end %>

Answer 1

问题出在嵌套表格上。因此，当我提交表单以进行新评论时，它还提交了更新活动的父表单。

在控制器之间发送数据

1 个答案: