Question

我想使用单个更新按钮在单个视图中使用批量更新每个操作。使用以下代码，Rails会出现此错误

Showing /home/vincent/git/gestion/app/views/operations/tag.html.erb where line #23 raised:

undefined method `merge' for 1:Fixnum
Extracted source (around line #23):

20:         <td>
21:             <% @tags.each do |elem| %>
22:             <%= f.label elem.tag %>
23:             <%= f.check_box "operation[tag_ids][]", elem.id, operation.tags.include?(elem) %>
24:             <% end %>
25:         </td>
26:         <td><%= f.submit %></td>

模型

class Operation < ActiveRecord::Base
  attr_accessible :credit, :date_operation, :debit, :libelle, :tag_ids
  has_and_belongs_to_many :tags
  accepts_nested_attributes_for :tags, :allow_destroy=>true
end

class Tag < ActiveRecord::Base
  attr_accessible :id, :tag
  has_and_belongs_to_many :operations
end

控制器

  def tag
    @operations = Operation.limit(100)
    @tags = Tag.all
    respond_to do |format|
      format.html { "tag" }# tag.html.erb
#      format.json { render json: @operations }
    end
  end

查看

<% @operations.each do |operation| %>
    <tr>

        <td><%= operation.date_operation %></td>
        <td><%= operation.libelle %></td>
        <td><%= operation.credit %></td>
        <td><%= operation.debit %></td>
        <%= form_for operation do |f| %>
        <td>
            <% @tags.each do |elem| %>
            <%= f.label elem.tag %>
            <%= f.check_box "operation[tag_ids][]", elem.id, operation.tags.include?(elem) %>
            <% end %>
        </td>
        <td><%= f.submit %></td>
        <% end %>
    </tr>
    <% end %>

你对这个问题有任何线索/帮助吗？

提前谢谢

编辑1：添加完整堆栈跟踪

Answer 1

您需要更改f.check_box的{{1}}，例如：

check_box_tag

这种情况下的问题是<%= check_box_tag "operation[tag_ids][]", elem.id, operation.tags.include?(elem) %>期望值被限制在不包含这种情况的形式。

Answer 2

在这种情况下使用nested_form gem我认为它会起作用。

有关nested_form的更多信息，请点击here

Rails 3：批量更新

2 个答案: