Ruby on Rails：Form不会创建hidden_​​field

Question

我正在尝试在Rails中创建一个带帮助器的表单，但我的所有字段都没有创建。我有一个帮助，我包括在我的视图中（我将它们都包括在内）。但由于我是铁杆新手，我甚至不确定我是以正确的方式做到这一点。

当我像这样写它时，它首先看起来像是有效的，因为按钮被创建但是当我点击它时没有传递任何值并且在DB中创建一个空行（id和timestamp除外）。

users_helper.rb

module UsersHelper

    def sub_button(u)
        @current_user = User.find session[:user_id]
        @temp_user = u
        @sub = Subscription.where("userID = ? AND followingID = ?", @current_user.id, @temp_user.id)
        if @sub.blank?
            @following = false
        else
            @following = true
        end
        if(u.username != @current_user.username)
            if @following
                form_for(:subscription, :url => { :controller => "subscriptions", :action => "unsubscribe" }) do |s|
                    s.hidden_field(:userID, :value => @current_user.id)
                    s.hidden_field(:followingID, :value => u.id)
                    s.submit "Unfollow"
                end
            else
                form_for(:subscription, :url => { :controller => "subscriptions", :action => "subscribe" }) do |s|
                    s.hidden_field(:userID, :value => @current_user.id)
                    s.hidden_field(:followingID, :value => u.id)
                    s.submit "Follow"
                end
            end
        end
    end
end

index.html.erb

<h2>All users</h2>

<table>
    <tr>
        <th>Username</th>
        <th>Email</th>
    </tr>

    <% @user.each do |u| %>
        <tr>
            <td><%= u.username %></td>
            <td><%= u.email %></td>
            <td><%= sub_button(u) %></td>
        </tr>
    <% end %>
</table>

所以我在想，如果我错过了创造领域的东西......任何线索？

Answer 1

我不确定，但我认为这应该是如何组织的：

module UserHelper
  def sub_button u
    @current_user = User.find session[:user_id]
    @temp_user = u
    @sub = Subscription.where("userID = ? AND followingID = ?", @current_user.id, @temp_user.id)
    if @sub.blank?
        @following = false
    else
        @following = true
    end
    if(u.username != @current_user.username)
        if @following
          render partial: 'shared/unfollow', locals: { current_user: @current_user, u: u }
        else
          render partial: 'shared/follow', locals: { current_user: @current_user, u: u }
        end
    end
end

视图/共享/ _unfollow.html.erb

<%= form_for(:subscription, url: { controller: "subscriptions", action: "unsubscribe" }) do |s| %>
   <%= s.hidden_field(:userID, value: current_user.id) %>
   <%= s.hidden_field(:followingID, value: u.id) %>
   <%= s.submit "Unfollow" %>
<% end %>

视图/共享/ _follow.html.erb

<%= form_for(:subscription, url: { controller: "subscriptions", action: "subscribe" }) do |s| %>
  <%= s.hidden_field(:userID, :value => current_user.id) %>
  <%= s.hidden_field(:followingID, :value => u.id) %>
  <%= s.submit "Follow" %>
<% end %>