我试图为ember组件添加一些outter功能。该组件如下:
app / templates / programmers.hbs
{{echo-hlabel-tf
id= "id-test-hlabel"
class="class-test-hlabel-mio"
label="Horizontal textfield"
textValue="..."
regExp="^([a-z0-9]{5})$"
errorMsg="Text hasn't five characters"
fnActionButtonClicked = "sayHello"
}}
我正在玩参数' fnActionButtonClicked' 。此参数表示它执行的函数,并且它不在组件的功能内(例如将javascript函数作为参数传递)。我是新手,而且我并不完全清楚这种方式。该组件的模板是:
app / templates / components / echo-hlabel-tf.hbs
<div id="echo-hlabel-tf">
<span id="{{id}}-echo-hlabel-tf-label"
class="{{class}}-echo-hlabel-tf-hlabel">
{{label}}
</span>
<span id="{{id}}-echo-hlabel-tf-value"
class="{{class}}-echo-hlabel-tf-value">
{{input id='input-id' class='input-class' value=textValue
focus-out = (action 'validateRegExp' textValue regExp)
}}
</span>
<span id="{{id}}-echo-hlabel-tf-error-msg"
class="{{class}}-echo-hlabel-tf-error-msg">
<p id='error-msg' class="error-msg">
{{errorMsg}}
</p>
</span>
<div>
<h2>Testing passing functions to the component</h2>
<input type="button" {{action "actionButtonClicked"}}/>
</div>
</div>
正如您所看到的,在模板的底部,有一个输入类型=&#34;按钮&#34;它被&#34; actionButtonClicked&#34;绑定了。组件的控制器是:
app / components / echo-hlabel-tf.js
import Ember from 'ember';
export default Ember.Component.extend({
classNameBindings:['error'],
error:false,
actions: {
validateRegExp(text,regExpStr,event){
let regExpObj = new RegExp(regExpStr)
if(regExpObj.test(text)){
this.set('error',false);
}else{
this.set('error',true);
}
},
actionButtonClicked(){
console.log('Arrives to the component');
var action = this.get('fnActionButtonClicked');
console.log(action);
// How can I call the function in another controller
// With parameter fnActionButtonClicked name
}
}
});
因此,模板&#39; fnActionButtonClicked&#39; (SayHello)的参数将在 actionButtonClicked()中通过 var action = this检索.get(&#39; fnActionButtonClicked&#39;); 。
所以,在这一点上,怀疑来了。由于我无法将javascript函数作为模板的参数传递(或者至少,我认为它不是正确的做事方式),因此我创建了一个控制器&#39; sampleController&#39; 使用以下代码创建操作&#39; sayHello&#39; (请参阅参数fnActionButtonClicked值):
app / controllers / sample-controller.js
从&#39; ember&#39;;
导入Emberexport default Ember.Controller.extend({
actions:{
sayHello(){
console.log("I'm saying hello this time");
}
}
});
我怎样才能从 app / components / echo-hlabel-tf.js:actionButtonClicked()执行 app / controllers / sample-controller.js的代码:sayHello() ?如何从组件控制器访问另一个控制器?这是实现我的目标的正确方法吗?
提前致谢
答案 0 :(得分:1)
您需要为特定路由programmers
创建控制器,而不是sample-controller.js。所以创建app / controllers / programmers.js
文件,
export default Ember.Controller.extend({
actions:{
sayHello(){
console.log("I'm saying hello this time");
}
}
})
并在组件app / components / echo-hlabel-tf.js
内部。
actionButtonClicked(){
console.log('Arrives to the component');
this.sendAction('fnActionButtonClicked');
}