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[英]How to pre-populate a list with selected items using multi-select, knockout, and objects
[英]How to pre-populate select options custom directive using angularjs
我是新創建的指令,該指令將在整個應用程序中為我提供幫助。 我基本上想創建一個預填充選項的獨立選擇元素指令。 對於最終結果,我要做的就是將ngModel與其綁定以進行設置和檢索。 我的html標記如下所示:
<div family-drop-down
humans-only="true"
ng-model="vm.selectedFamilyMember"></div>
這是角度代碼:
(function(){
'use strict';
angular.module('app', [])
.controller('familyController', function(){
var self = this;
self.title = '';
self.selectedFamilyMember = {};
function init(){
self.title = 'drop down example';
}
init();
})
.directive('familyDropDown', function(){
function helperController(){
var self = this;
self.family = [];
self.init = function() {
self.family = [
{id: 1, firstName: 'John', lastName: 'Doe', human: true},
{id: 2, firstName: 'Jane', lastName: 'Doe', human: true},
{id: 3, firstName: 'Baby', lastName: 'Doe', human: true},
{id: 4, firstName: 'Dog', lastName: 'Doe', human: false}
];
};
}
return {
restrict: 'AE',
replace: true,
required: '^ngModel',
scope: {
humansOnly: '@',
ngModel: '='
},
controller : helperController,
controllerAs: 'vm',
template: [
'<select ',
'id = "ddlFamily" ',
'name = "family" ',
'class = "form-control" ',
'ng-options = "(fam.firstName + " " + fam.lastName + " (" + fam.id + ")") for fam in vm.family" ',
'required ',
'title= "select family member in drop-down-list"> ',
'<option value="">select member</value> ',
'</select>'
].join(''),
link: function(scope, element, attrs, ctrl){
attrs('ng-model', scope.ngModel);
ctrl.init();
}
};
});
})();
柱塞: http ://plnkr.co/edit/XfLRD8pzBISvQgV1mRqd?p = preview
在此先感謝您的時間和幫助。
您在ngOption
屬性中使用了不正確的引號"
。”正確的選擇是:
template: [
'<select ',
'name="family" ',
'class="form-control" ',
'ng-options="(fam.firstName + \' \' + fam.lastName + \' (\' + fam.id + \')\') for fam in vm.family" ',
'required ',
'title= "select family member in drop-down-list"> ',
'<option value="">select member</value> ',
'</select>'
].join(''),
演示: http : //plnkr.co/edit/RLGc9dAElD1wpLN8uPm0?p = preview
還要注意的是它的require
並不required
。 而且由於您鍵入了錯誤的代碼-您可以將其一起刪除,因此在您的情況下不需要使用它(您正在使用范圍ngModel: '='
綁定)。
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