ruby-on-rails - 将参数传递给局部 View -Rails 4/postgresql/json

我有一个名为'Deal_info'的列/属性的交易模型，它是一个json列。
比如这个

deal1.deal_info = [ { "modal_id": "4", "text1":"lorem" },
          { "modal_id": "6", "video2":"yonak" },
          { "modal_id": "9", "video2":"boom" } ]
deal2.deal_info = [ { "modal_id": "10", "text1":"lorem" },
          { "modal_id": "11", "video2":"yonak" },
          { "modal_id": "11", "image4":"boom" } ]

在我的view deal.html.erb上，我有：

<%= for deal_nb in [email protected]_of_deals do %>
  <div class="modal fade" id="myInfoModal<%= modal_nb %>" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <!-- render the right modal type -->
    <%= render "layouts/modal_type_partials/mt#{ @deal.deal_info[deal_nb]['modal_id'] }", parameter_i_want_to_pass: deal_nb  %>
  </div>
<% end %>

上面，如您所见，我想为参数“我要”中的循环的每次迭代传递迭代循环的编号（例如，第二次迭代将是参数“我要”传递=2）。
就部分而言，我有：

<div class="modal-dialog">
  <div class="modal-content">
    <div class="modal-header">
      <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
      <h4 class="modal-title" id="myModalLabel">this is mt4</h4>
    </div>
    <div class="modal-body">
      this is the text: <%= @deal.deal_info[parameter_i_want_to_pass]['text1'] %>

    </div>
  </div>

我得到以下错误：

no implicit conversion of String into Integer (on line "this is the text: <%= @deal.deal_info[parameter_i_want_to_pass]")

实际上，我甚至试图通过传递一个设置的数字而不是变量“deal-nb”来更容易地检测到错误

<%= render "layouts/modal_type_partials/mt#{ @deal.deal_info[deal_nb]['modal_id'] }", parameter_i_want_to_pass: 2  %>

但我还是犯了同样的错误。
编辑
为了帮助识别问题，如果我在部分视图中替换@deal.deal\u info[parameter\u I\u want\u pass]['text1'][email protected]\u info[2]['text1']，则它可以工作，因此问题必须是部分视图不希望接收我在deal.html.erb中设置的数字

<div class="modal-dialog">
      <div class="modal-content">
        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
          <h4 class="modal-title" id="myModalLabel">this is mt4</h4>
        </div>
        <div class="modal-body">
          this is the text: <%= @deal.deal_info[2]['text1'] %>

        </div>
      </div>
   </div>

编辑2
为了更新问题，我设法解决了一部分问题。我用这个方法把字符串转换成一个数字
因此，上面的代码现在可以工作了，它将信息（parameter_i_want_to_pass=2）传递给部分视图。我查过了。

<%= render "layouts/modal_type_partials/mt#{ @deal.deal_info[deal_nb]['modal_id'] }", parameter_i_want_to_pass: 2  %>

但剩下的问题是，如何不将其设置为2，而是传递迭代循环的数目

<%= for deal_nb in [email protected]_of_deals do %>
      <div class="modal fade" id="myInfoModal<%= modal_nb %>" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
        <!-- render the right modal type -->
        <%= render "layouts/modal_type_partials/mt#{ @deal.deal_info[deal_nb]['modal_id'] }", parameter_i_want_to_pass: deal_nb  %>
      </div>
<% end %>

这里我遇到了一个错误

undefined local variable or method `modal_number'

最佳答案

你的变量名有点混乱，但我想这就是你要做的。我正在使用each_with_index方法遍历deal的deal_info中的每个模式。然后为locals: { }使用render partial:参数，以便将变量传递给partial。然后部分引用这些变量，就像它们是在本地定义的一样。partial甚至不需要index变量，但我展示了如何传递它。
查看

<% @deal.deal_info.each_with_index do |modal, index| %>
  <div class="modal fade" id="myInfoModal<%= index %>" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <!-- render the right modal type -->
    <%= render partial: "layouts/modal_type_partials/mt#{ modal['modal_id'] }", locals: { modal: modal, index: index }  %>
  </div>
<% end %>

部分

<div class="modal-dialog">
  <div class="modal-content">
    <div class="modal-header">
      <button type="button" class="close" data-dismiss="modal" aria-label="Close">
        <span aria-hidden="true">&times;</span>
      </button>
      <h4 class="modal-title" id="myModalLabel">this is mt4</h4>
    </div>
    <div class="modal-body">
      this is the text: <%= modal['text1'] %>
    </div>
  </div>
...

关于ruby-on-rails - 将参数传递给局部 View -Rails 4/postgresql/json，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/31100358/