Question

我尝试使用dgrid（使用他们的示例）为网格布局实现一个类，但是在加载网格时出现此错误（ subRows未定义）。我的代码看起来像这样：

define([
    "dojo/_base/declare",
    "dojo/_base/lang",
    "dgrid/Grid",
    "dgrid/Keyboard", 
    "dgrid/Selection"
], function(
    declare,
    lang,
    Grid,
    Keyboard, 
    Selection
){

    return declare([Grid, Keyboard, Selection], {

            columns: {
                first: "First Name",
                last: "Last Name",
                age: "Age"
            },
            selectionMode: "single", // for Selection; only select a single row at a time
            cellNavigation: false, // for Keyboard; allow only row-level keyboard navigation

         constructor: function() {
              var data = [
            { first: "Bob", last: "Barker", age: 89 },
            { first: "Vanna", last: "White", age: 55 },
            { first: "Pat", last: "Sajak", age: 65 }
            ];

            this.renderArray(data);
        }
    });
});

并像这样调用/创建

app.gridLayout = new GridLayout().placeAt(document.body);

Answer 1

将constructor代码放入postCreate方法：

return declare([Grid, Keyboard, Selection], {

    columns: {
        first: "First Name",
        last: "Last Name",
        age: "Age"
    },

    selectionMode: "single",
    cellNavigation: false,

    postCreate: function() {
        var data = [
            { first: "Bob", last: "Barker", age: 89},
            { first: "Vanna", last: "White", age: 55},
            { first: "Pat", last: "Sajak", age: 65}
        ];

        this.renderArray(data);
    }
});

另请注意dgrid不是 dijit 以最小化其依赖关系，因此它没有placeAt()方法。你有两个选择：

将占位符的 DOM节点或id string 提供给构造函数作为第二个参数：
```
var gridLayout = new GridLayout({}, "placeholder");
```
通过将dgrid子类化为dijit/_WidgetBase，使gridLayout.placeAt("placeholder")成为 dijit ：
```
declare([_WidgetBase, Grid, Keyboard, Selection], {});
```

运行dojo dgrid：子行是未定义的

1 个答案: