Javascript 如何在 ui-router 中使用 ui-sref 将参数传递给控制器
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How to pass parameters using ui-sref in ui-router to controller
提问by skip
I need to pass and recieve two parameters to the state I want to transit to using ui-srefof ui-router.
我需要传递和接收两个参数到我想转换到使用ui-srefui-router 的状态。
Something like using the link below for transitioning the state to homewith fooand barparameters:
类似于使用下面的链接将状态转换为homewithfoo和bar参数：
<a ui-sref="home({foo: 'fooVal', bar: 'barVal'})">Go to home state with foo and bar parameters </a>
Receiving fooand barvalues in a controller:
在控制器中接收foo和bar取值：
app.controller('SomeController', function($scope, $stateParam) {
//..
var foo = $stateParam.foo; //getting fooVal
var bar = $stateParam.bar; //getting barVal
//..
});
I get undefinedfor $stateParamin the controller.
我在控制器中得到undefined了$stateParam。
Could somebody help me understand how to get it done?
有人可以帮助我了解如何完成它吗？
Edit:
编辑：
.state('home', {
url: '/',
views: {
'': {
templateUrl: 'home.html',
controller: 'MainRootCtrl'
},
'A@home': {
templateUrl: 'a.html',
controller: 'MainCtrl'
},
'B@home': {
templateUrl: 'b.html',
controller: 'SomeController'
}
}
});
回答by Radim K?hler
I've created an exampleto show how to. Updated statedefinition would be:
我创建了一个示例来展示如何操作。更新的state定义是：
$stateProvider
.state('home', {
url: '/:foo?bar',
views: {
'': {
templateUrl: 'tpl.home.html',
controller: 'MainRootCtrl'
},
...
}
And this would be the controller:
这将是控制器：
.controller('MainRootCtrl', function($scope, $state, $stateParams) {
//..
var foo = $stateParams.foo; //getting fooVal
var bar = $stateParams.bar; //getting barVal
//..
$scope.state = $state.current
$scope.params = $stateParams;
})
What we can see is that the state home now has url defined as:
我们可以看到 state home 现在的 url 定义为：
url: '/:foo?bar',
which means, that the params in url are expected as
这意味着，url 中的参数预期为
/fooVal?bar=barValue
These two links will correctly pass arguments into the controller:
这两个链接将正确地将参数传递给控制器：
<a ui-sref="home({foo: 'fooVal1', bar: 'barVal1'})">
<a ui-sref="home({foo: 'fooVal2', bar: 'barVal2'})">
Also, the controller does consume $stateParamsinstead of $stateParam.
此外，控制器确实消耗$stateParams而不是$stateParam.
Link to doc:
链接到文档：
You can check it here
你可以在这里查看
params : {}
params : {}
There is also new, more granular setting params : {}. As we've already seen, we can declare parameters as part of url. But with params : {}configuration - we can extend this definition or even introduce paramters which are not part of the url:
还有新的、更精细的设置params : {}。正如我们已经看到的，我们可以将参数声明为url. 但是通过params : {}配置 - 我们可以扩展这个定义，甚至引入不属于 url 的参数：
.state('other', {
url: '/other/:foo?bar',
params: {
// here we define default value for foo
// we also set squash to false, to force injecting
// even the default value into url
foo: {
value: 'defaultValue',
squash: false,
},
// this parameter is now array
// we can pass more items, and expect them as []
bar : {
array : true,
},
// this param is not part of url
// it could be passed with $state.go or ui-sref
hiddenParam: 'YES',
},
...
Settings available for params are described in the documentation of the $stateProvider
$stateProvider的文档中描述了可用于参数的设置
Below is just an extract
以下只是摘录
- value - {object|function=}: specifies the default value for this parameter. This implicitly sets this parameter as optional...
- array - {boolean=}:(default: false) If true, the param value will be treated as an array of values.
- squash - {bool|string=}:squash configures how a default parameter value is represented in the URL when the current parameter value is the same as the default value.
- value - {object|function=}：指定此参数的默认值。这隐式地将此参数设置为可选...
- 数组 - {boolean=}：（默认值：false）如果为 true，则参数值将被视为值数组。
- squash - {bool|string=}：当当前参数值与默认值相同时，squash 配置如何在 URL 中表示默认参数值。
We can call these params this way:
我们可以这样称呼这些参数：
// hidden param cannot be passed via url
<a href="#/other/fooVal?bar=1&bar=2">
// default foo is skipped
<a ui-sref="other({bar: [4,5]})">
Check it in action here
在这里检查它的行动
回答by Paul Mougel
You don't necessarily need to have the parameters inside the URL.
您不一定需要在 URL 中包含参数。
For instance, with:
例如，与：
$stateProvider
.state('home', {
url: '/',
views: {
'': {
templateUrl: 'home.html',
controller: 'MainRootCtrl'
},
},
params: {
foo: null,
bar: null
}
})
You will be able to send parameters to the state, using either:
您将能够使用以下任一方法将参数发送到状态：
$state.go('home', {foo: true, bar: 1});
// or
<a ui-sref="home({foo: true, bar: 1})">Go!</a>
Of course, if you reload the page once on the homestate, you will loose the state parameters, as they are not stored anywhere.
当然，如果您在home状态上重新加载页面一次，您将丢失状态参数，因为它们没有存储在任何地方。
A full description of this behavior is documented here, under the paramsrow in the state(name, stateConfig)section.
此处记录了此行为的完整描述，params位于state(name, stateConfig)部分中的行下方。
回答by felixfbecker
You simply misspelled $stateParam, it should be $stateParams(with an s). That's why you get undefined ;)
您只是拼错了$stateParam，它应该是$stateParams（带有 s）。这就是为什么你得到 undefined ;)
