绑定H：selectBooleanCheckbox值INT /整数代替布尔/布尔 [英] Bind h:selectBooleanCheckbox value to int/Integer instead of boolean/Boolean

问题描述

我有一个＆LT; H：selectBooleanCheckbox值=＃{someBean.prop}＆GT; ，其中道具的类型 INT 的属性。难道真的不起作用直线距离？我一定要实现自定义转换器转换成布尔到 INT ？有没有人正好有转换器code表示，在股票？我看有JSF​​ 2.0中的一些错误，prevents转换器＆LT; H：selectBooleanCheckbox＆GT; 进行处理。谁能证实？

I have a <h:selectBooleanCheckbox value="#{someBean.prop}"> where prop is a property of type int. Is it really not working straight away? Do I have to implement a custom converter to convert Boolean to int? Does anyone happen to have converter code for that at stock? I read that there is some bug in JSF 2.0 that prevents converters for <h:selectBooleanCheckbox> to be processed. Can anyone confirm that?

我使用的MyFaces 2，战斧和Tomcat 6。

I use MyFaces 2, Tomahawk and Tomcat 6.

推荐答案

的＆LT; H：selectBooleanCheckbox＆GT; 应，正如它的名字说，被绑定到布尔或布尔属性。没有其他的。它允许一个转换属性实际上是在规范中的一个错误。它绝不会允许的。

The <h:selectBooleanCheckbox> should, as its name say, be bound to a boolean or Boolean property. Nothing else. That it allows a converter attribute is actually a bug in the spec. It should never have allowed it.

问题更多的是你的模型，你为什么会使用 INT 重新present一个布尔状态？改变你的模型，让它成为一个fullworthy 布尔。

The problem is more in your model, why would you use an int to represent a boolean state? Change your model to let it be a fullworthy boolean.

如果改变模型是不是出于某种原因的选项（第三方API，一个愚蠢的建筑师，或者愚蠢的业务限制等），然后换行模式的getter / setter在后端bean中像如下

If changing the model isn't an option for some reason (a 3rd party API, a stupid architect, or stupid business restrictions, etc), then wrap the model getter/setter in the backing bean like follows

public boolean isChecked() {
    return someModel.getSomeInt() != 0;
}

public void setChecked(boolean checked) {
    someModel.setSomeInt(checked ? 1 : 0);
}

和使用它来代替为＆LT; H：selectBooleanCheckbox值=＃{} bean.checked/＆GT;

这篇关于绑定H：selectBooleanCheckbox值INT /整数代替布尔/布尔的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！