Question

我有一个'RootProduct'属于'Subgroup2'和has_and_belongs_to_many'Measure'，以及其他关系。我正在使用jQuery-select2和Simple_form来构建表单。它与简单的关联工作正常，但我无法管理它与多个标记。这是我的模特：

class RootProduct < ActiveRecord::Base

  attr_accessible :name, :subgroup2_id, :measure_ids
  has_many :market_products
  belongs_to :subgroup2
  validates_presence_of :name
  validates_uniqueness_of :name
  validates_presence_of :subgroup2
  validates_presence_of :measure_ids
  has_many :favorite_products
  has_many :users, :through => :favorite_products
  has_many :generic_market_produc_images, :dependent => :destroy, :class_name => 'GenericMarketProductImage'
  has_and_belongs_to_many :measures

end

这是我的表格，

<body>
  <%= simple_form_for(@root_product) do |f| %>
    <%= f.error_notification %>
    <%= f.input :subgroup2_id, label: false %><br />
    <%= f.input :measure_ids, label: false, multiple: 'multiple' %><br />
    <%= f.input :name, label: false %><br />
    <div class="form-actions">
      <%= f.button :submit %>
    </div>

  <% end %>
</body>

这是我的select2脚本，

$("#root_product_measure_ids").select2({
        width: "500px",
        placeholder: "Choose measures",
        tokenSeparators: [",", " "],
        multiple: true,
        ajax: {
          url: '/measures',
          dataType: "json",
          data: function(term, page) {
            return {
              q: term
            };
          },
          results: function(data, page) {
            return {
              results: data
            };
          }
        },
        initSelection: function(element, callback) {
            console.log("entrou 2");
            //console.log(element.val());
            var data = [];
            $(element.val().replace('[', '').replace(']', '').replace(/ /g,'').split(",")).each(function(i) {
                //console.log(this);
                $.ajax("/measures/"+this+".json", {
                dataType: "json"
                }).done(function(measure) {
                  data.push({
                    id: measure.id,
                    name: measure.name
                  });
                  callback(data);
                });
            }); 
        },
        formatResult: FormatResult,
        formatSelection: FormatSelection,
        dropdownCssClass: "bigdrop", // apply css that makes the dropdown taller
        escapeMarkup: function (m) { return m; },
        allowClear: true
      })
      .on("selected", function(e) { 
        MeasureSelected();
        })
      .on("removed", function(e) { 
        MeasureRemoved();
        })
      ;
    })

从我的控制台日志中可以看到，当启动新的“RootProduct”的POST时，带有measure_ids的数组为空，后跟应该已经进入数组的度量的id。

enter image description here 我在这里遗漏了一些东西。我试图用simple_form和select2调整很多选项而没有成功。任何建议都会非常有用。

Answer 1

我以前遇到过这个。这是我的解决方案：

在root_product.rb中，添加以下内容：

class RootProduct < ActiveRecord::Base
  attr_accessible :ac_measure_ids
  attr_accessor :ac_measure_ids

  before_save :set_measures

  private

  def set_measures
    self.measure_ids = @ac_measure_ids.split(',')
  end

  def ac_measure_ids
    self.measure_ids.blank? ? "" : self.measure_ids.join(',')
  end

end

在表单中，替换

<%= f.input :measure_ids, label: false, multiple: 'multiple' %>

到

 <%= f.input :ac_measure_ids, label: false, multiple: 'multiple' %>

Rails Simple_form和Select2带标签

1 个答案: