pass all fields value into onFieldsChange method

[anson0370]

Sometimes I want to do something when one field changing but use another field's value. So I make this PR.

We can use onChange prop at most of the time. But when we use package like Antd, there is no way to use a custom onChange prop（the onChange is generated by getFieldDecorator()）.

Or we can add an option for getFieldDecorator() to do this? Or there is another solution I do not know? Please discuss.

[coveralls]

Coverage decreased (-0.5%) to 87.554% when pulling a9aa789 on anson0370:pass-all-fieldsvalue-in-onchange into 616ddd3 on react-component:master.

[benjycui]

You can get other fields from props

[coveralls]

Coverage decreased (-0.5%) to 87.554% when pulling c8f7a3f on anson0370:pass-all-fieldsvalue-in-onchange into 616ddd3 on react-component:master.

[anson0370]

@benjycui Sometimes the component will be wrapped. I can't get other fields use props.form or props.getForm() or something like these.

In my case. I must use code like props.refs.wrappedComponent.getForm().getFieldsValue() what is really ugly.

Maybe I do things wrong?

[benjycui]

You can get fields from this props，for you had pass fields to upper component by onChange

[anson0370]

@benjycui 我决定还是打中文吧……
我就是指的这个 props ，你的意思是用 <input/> 的 onChange 传递给上层组件或者 redux store 再传回 props 里来获取别的 field 对吧？
但 AntD 的 onChange 是不建议自己实现的，所以我就直接用 form 的 onFieldsChange 来做这件事？

可是很多时候我就只是简单想获取一下，没有强烈的需求要传给 redux store 或上层组件。还是说从规范上来说我就不应该这样做？
其实我这个需求并不一定要在这里处理，可以在 AntD 中类似这样

getFieldDecorator('field', {
  onChange(value) {
    // do something
  }
});

[benjycui]

并没有不建议自行实现 onChange...

[benjycui]

ant-design/ant-design@4d2bdfd

[anson0370]

@benjycui sorry 我没看仔细

[benjycui]

我刚更新的 😄