Angularjs纳克级的动态值 [英] Angularjs ng-class dynamic value
问题描述
我想申请一个类名这是同一个范围的变量。
例如:
< DIV纳克级={item.name:item.name}>
让的值item.name
添加到类。这似乎并不尽管做任何事情。如何做到这一点有什么建议?
谢谢!
编辑:
这实际上是被内选择完成,采用NG选项。例如:
<选择NG选项=C code作为c.name在国家C>< /选择>
现在,我想申请一个具有价值的类名角code
我发现下面的指令,这似乎是工作,但不能与价值的插补:
angular.module('directives.app')。指令(optionsClass',['$解析',函数($解析){
使用严格的; 返回{
要求:'选择',
链接:功能(范围,ELEM,ATTRS,ngSelect){
//获取项目阵列用于填充选择源。
变种optionsSourceStr = attrs.ngOptions.split('').pop(),
//使用$解析从选项-class属性得到一个功能
//你可以使用后评估。
getOptionsClass = $解析(attrs.optionsClass); 范围。$腕表(optionsSourceStr,功能(项目){
//当选择源通过改变其项目环。
angular.forEach(项功能(项指数){
//评估对项目得到了一个映射对象
//你的班。
VAR类= getOptionsClass(项目)
//还可以得到你要需要的选项。此,可以发现
//通过寻找与在合适的索引选项
// value属性。
选项= elem.find('选项[值='+指数+']'); //现在通过在映射对象中的键/值对环
//并应用评价为truthy类。
angular.forEach(类,函数(添加,的className){
如果(添加){
angular.element(可选).addClass(类名);
}
});
});
});
}
};}]);
晚来总比不来。
< DIV纳克级={'{{item.name}}':item.condition}>
是的。
和 {{
的类名。
I'm trying to apply a class name that's the same as a scope variable.
For example:
<div ng-class="{item.name : item.name}">
So that the value of item.name
is added to the class. This doesn't seem to do anything though. Any suggestions on how to do this?
Thanks!
EDIT:
This is actually being done within a select, using ng-options. For example:
<select ng-options="c.code as c.name for c in countries"></select>
Now, I want to apply a class name that has the value of c.code
I found the following directive, which seems to work, but not with interpolation of the value:
angular.module('directives.app').directive('optionsClass', ['$parse', function ($parse) {
'use strict';
return {
require: 'select',
link: function(scope, elem, attrs, ngSelect) {
// get the source for the items array that populates the select.
var optionsSourceStr = attrs.ngOptions.split(' ').pop(),
// use $parse to get a function from the options-class attribute
// that you can use to evaluate later.
getOptionsClass = $parse(attrs.optionsClass);
scope.$watch(optionsSourceStr, function(items) {
// when the options source changes loop through its items.
angular.forEach(items, function(item, index) {
// evaluate against the item to get a mapping object for
// for your classes.
var classes = getOptionsClass(item),
// also get the option you're going to need. This can be found
// by looking for the option with the appropriate index in the
// value attribute.
option = elem.find('option[value=' + index + ']');
// now loop through the key/value pairs in the mapping object
// and apply the classes that evaluated to be truthy.
angular.forEach(classes, function(add, className) {
if(add) {
angular.element(option).addClass(className);
}
});
});
});
}
};
}]);
Better later than never.
<div ng-class="{'{{item.name}}' : item.condition}">
yes. '
and {{
for classname.
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