记录废物中单选按钮的值 [英] Recording values of radio buttons in ember
问题描述
导出默认Component.extend({
loanAmount:200000,
可扣除:0,
debtInt:5,
getLoanCosts:computed('loanAmount','debtInt',function(){
return(get(this,'debtInt ')/ 12)* get(this,'loanAmount');
})
在我的template.hbs上,我有一个输入字段 {{input value = loanAmount}}
,我可以调用 {{getLoanCosts}}
我的template.hbs,以显示计算的成本,这对于文本/数字输入非常有用。
但是,我需要一个单选按钮输入有两个值(是和否),这应该符合我的组件中的可扣除的
值(即这笔贷款是否可以扣除?),但是如果我这样做: p>
是{{input type =radioname =deductiblevalue = deductible}}
否{{input type =radioname =deductiblevalue = deductible}}
我无法为这两个输入设置值,就像我可以用直接的HTML一样。如果我设置value = 0和value = 1,它们不会在我的组件中更新。
是的,所以Ember没有内置支持单选按钮。尝试制作自己的组件!而且,让自己的意思是无耻的从互联网窃取。
从ember导入Ember;
导出默认值Ember.Component.extend({
tagName:'input',
type:'radio',
attributeBindings:['type','htmlChecked :check','value','name','disabled'],
htmlChecked:function(){
return this.get('value')=== this.get ('checked');
} .property('value','checked'),
更改:function(){
this.set('checked' .get('value'));
},
_updateElementValue:function(){
Ember.run.next(this,function(){
this 。$()。prop('checked',this.get('htmlChecked'));
});
} .observes('htmlChecked')
});
在组件中,单选按钮仍然有值,但选择的绑定是传递的在检查的属性中:
是{{radio-button value ='1'checked = choice}}
否{ {radio-button value ='0'checked = choice}}
I am fairly new to Ember (using version 0.2.3). I have a component with a few computed values. They gather these computed values from input fields:
export default Component.extend({
loanAmount : 200000,
deductible : 0,
debtInt : 5,
getLoanCosts: computed('loanAmount', 'debtInt', function(){
return (get(this, 'debtInt')/12) * get(this, 'loanAmount');
})
On my template.hbs, I have an input field {{ input value=loanAmount }}
and I can call {{getLoanCosts}}
in my template.hbs, to show the computed cost. This works great for text/number inputs.
However, I need to have a radio button input with two values (Yes and No). This should line up with the deductible
value in my component (i.e. is this loan deductible?). However, if I do:
Yes {{ input type="radio" name="deductible" value=deductible }}
No {{ input type="radio" name="deductible" value=deductible }}
I can't set values for these two inputs, like I can with straight HTML. If I set value=0 and value=1, they never update in my component. How can I update my deductible
in the component based on whether Yes or No is selected?
Yeah so Ember doesn't have built in support for a radio button. Try making your own component! And by make your own I mean shameless steal one from the internet.
import Ember from 'ember';
export default Ember.Component.extend({
tagName: 'input',
type: 'radio',
attributeBindings: ['type', 'htmlChecked:checked', 'value', 'name', 'disabled'],
htmlChecked: function() {
return this.get('value') === this.get('checked');
}.property('value', 'checked'),
change: function() {
this.set('checked', this.get('value'));
},
_updateElementValue: function() {
Ember.run.next(this, function() {
this.$().prop('checked', this.get('htmlChecked'));
});
}.observes('htmlChecked')
});
And in component, the radio buttons still have values, but the binding of the selection is to the passed in checked property:
Yes{{radio-button value='1' checked=choice}}
No{{radio-button value='0' checked=choice}}
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