我有一个父组件,它有一个手风琴面板(有多个/动态行数)
{{#my-accordion accordionPanels=accordionPanels as |accordion| }}
{{my-details-row section=accordion.props.section removeRow='removeRow'}}
{{/my-accordion}}
相应的JS如下;
accordionPanels: function() {
var accordionPanels = [];
var self = this;
var myRows = this.get('section').myRows;
myRows.forEach(function(myRow) {
accordionPanels.pushObject({
panel: {
name: myRow.rowId,
props: {
section: myRow
}
}
});
});
return accordionPanels;
}.property('section.myRows'),
actions: {
removeRow: function(row){
var numberContainers = this.get('section').myRows.length;
for (var i = 0; i < numberContainers; i++){
if(this.get('section').myRows.contains(row.name)){
console.log("row found!");
this.get('section').myRows.removeObject(row.name);
}
}
},
}
子组件(my-details-row)代码如下
actions: {
removeRow: function(row){
this.sendAction('removeRow', row);
}
}
儿童hbs如下;
<div class="dataBlockItem">
{{my-field field=(field-from-section section "SECTION_NAME" "FIELD_NAME") }}
</div>
{{my-button label="Remove" action="removeRow"}}
现在,当单击“删除”按钮时,我希望删除相应的行。虽然我确实在父母那里得到了行动(从孩子那里传来), 甚至在执行
之后this.get(&#39;节&#39)。myRows.removeObject(row.name);
UI未更新(即父级中的数据更改未反映在子组件中)
我是否需要编写其他代码/逻辑才能反映UI上的更改?
答案 0 :(得分:1)
你走在正确的轨道上。您应该能够使用闭包操作来帮助简化父和子组件操作的连接。请在下面的链接中查看以下代码和一个非常基本的例子Ember Twiddle。此外,您可能已经看过这个,但以下是这里是Ember.js指南的链接,它提供了组件操作的说明。 Ember Component Actions -version 2.15
父component.hbs
{{#my-accordion accordionPanels=accordionPanels as |accordion| }}
{{my-details-row section=accordion.props.section removeRow=(action 'removeRow' accordion)}}
{{/my-accordion}}
父组件.js
- 这里可以通过简单地传递行对象本身.removedObject(row)
actions: {
removeRow: function(row){
var numberContainers = this.get('section.myRows').length;
for (var i = 0; i < numberContainers; i++){
if(this.get('section.myRows').includes(row.name)){
console.log("row found!");
this.get('section.myRows').removeObject(row);
}
}
},
}
Child component.hbs
- 此处将removeRow
操作绑定到按钮组件的点击事件
<div class="dataBlockItem">
{{my-field field=(field-from-section section "SECTION_NAME" "FIELD_NAME") }}
</div>
{{my-button label="Remove" click=removeRow}}
Child component.js
- 此处不必定义removeRow
函数。
actions: {
// No need to define the removeRow function
}
Example Ember Twiddle --using ember.js@2.2.2 to show the rough compatibility of the above approach