Question

我得到“没有方法”结果'backbone.marionette.js：402错误“。这是跟踪：

Uncaught TypeError: Object function (obj) { return new wrapper(obj); } has no method 'result' backbone.marionette.js:402

Marionette.CollectionView.Marionette.View.extend.buildItemView backbone.marionette.js:402
Marionette.CollectionView.Marionette.View.extend.addItemView backbone.marionette.js:360
Marionette.CollectionView.Marionette.View.extend.showCollection backbone.marionette.js:314

...

在backbone.marionette.js中：

// Build an `itemView` for every model in the collection. 
buildItemView: function(item, ItemView){
var itemViewOptions = _.result(this, "itemViewOptions");
    ***Uncaught TypeError: Object function (obj) { return new wrapper(obj); } has no method 'result' ***
var options = _.extend({model: item}, itemViewOptions);
var view = new ItemView(options);
return view;
backbone. },

我的通话代码：

MyApp.module("CatalogsApp.Pasteboard", function(Pasteboard, MyApp, Backbone, Marionette, $, _) {
    var CatalogListView, CatalogView;
    CatalogView = Marionette.ItemView.extend({
      tagName: "div",
      className: "catalog-cell",
      template: "catalogs/catalog"
    });
    CatalogListView = Marionette.CollectionView.extend({
      tagName: "div",
      className: "paste-board",
      itemView: catalogView
    });
    Pasteboard.showCatalogs = function(catalogList) {
      var catalogListView;
      catalogListView = new CatalogListView({
        collection: catalogList
      });
      return MyApp.layout.main.show(catalogListView);
    };
  });

如果有人有任何线索可能导致类型错误的问题 - 很高兴得到想法。我几乎可以告诉他。 catalogList集合似乎很好 - 从服务器填充。我知道这可能很难破译，但也许有人知道如何解决问题。

Answer 1

确保您拥有最新的underscore.js版本。 '结果'功能已添加到v1.3.3

中

Answer 2

执行此操作时，您将覆盖您的班级定义var catalogListView;。

惯例是为您的类定义大写名称，如下所示：

MyApp.module("CatalogsApp.Pasteboard", function(Pasteboard, MyApp, Backbone, Marionette, $, _) {
    var CatalogListView, CatalogView;
    CatalogView = Marionette.ItemView.extend({
      tagName: "div",
      className: "catalog-cell",
      template: "catalogs/catalog"
    });
    CatalogListView = Marionette.CollectionView.extend({
      tagName: "div",
      className: "paste-board",
      itemView: CatalogView
    });
    Pasteboard.showCatalogs = function(catalogList) {
      var catalogListView;
      catalogListView = new CatalogListView({
        collection: catalogList
      });
      return MyApp.layout.main.show(catalogListView);
    };
  });

Marionette / Backbone应用程序中没有方法错误

2 个答案: