javascript - Typeahead 从 url json 值获取数据不起作用

Question

下面是我的 Angular typeahead 的 HTML 代码:

<div class="form-group">
 <select name="" class="form-control" ng-model="city" ng-change="onChange(e)" id="city">
    <option value="DELHI">DELHI</option>
    <option value="BANGALORE">BANGALORE</option>
    <option value="GOA">GOA</option>
    <option value="KOLKATA">KOLKATA</option>
    <option value="PUNJAB">PUNJAB</option>
 </select>
</div>

<input type="search" name="" ng-model="bankName" typeahead='bank_name as bankName | filter:$viewValue | limitTo:8'  id="input" class="form-control" value="" placeholder="Search" required="required" title="">

<table class="table table-hover">
    <thead>
        <tr>
            <th>IFSC</th>
            <th>BANK ID</th>
            <th>BANK NAME</th>
            <th>BRANCH</th>
            <th>ADDRESS</th>
            <th>CITY</th>
            <th>DISTRICT</th>
            <th>STATE</th>
        </tr>
    </thead>
    <tbody>
        <tr ng-repeat="service in services">
            <td>{{service.ifsc}}</td>
            <td>{{service.bank_id}}</td>
            <td>{{service.bank_name}}</td>
            <td>{{service.branch}}</td>
            <td>{{service.address}}</td>
            <td>{{service.city}}</td>
            <td>{{service.district}}</td>
            <td>{{service.state}}</td>
        </tr>
    </tbody>
</table>

下面是JS文件:

var app = angular.module('bankBranch', ['ui.bootstrap'])


.controller('ServicesCtrl', ['$scope', '$http', function($scope, $http){
    $scope.bankUrl = "https://someweb.com/api/bank_branches?offset=0&limit=50&city=";
    $scope.city = 'BANGALORE';
    var bankName = '$scope.bank_name';  
    var cities = '$scope.city';
    $scope.getdata = function(){
        $http.get($scope.bankUrl+$scope.city).then(function(response){
            $scope.services = response.data;
        });
    }

    $scope.onChange = function(e){
        $scope.getdata();
    }
    $scope.getdata();
}]);

问题是我正在尝试获取输入字段中的分支名称，当我输入下表数据时，应该根据该名称进行过滤。 onChange 函数适用于选择框。 api url的JSON格式如下:

[{
"ifsc": "asdads",
"bank_id": 110,
"bank_name": "abc bank",
"branch": "BANGALORE",
"address": "ewrwerewr",
"city": "BANGALORE",
"district": "BANGALORE URBAN",
"state": "KARNATAKA"
}]

知道如何修改它吗？被卡住了。请帮助我。

Answer 1

您在使用 typeahead 指令时犯了一个错误，它的工作方式是，它需要一个 Promise 对象，您将在该对象上应用 $viewValue 过滤器

<input type="search" name="" ng-model="bankName" 
   typeahead='bank_name for bankName in getdata()'
   id="input" class="form-control" value="" 
   placeholder="Search" required="required" title=""/>

因此，让我们更改您的 $scope.getData 函数以从中返回 Promise 对象。

$scope.getdata = function(){
    return $http.get($scope.bankUrl+$scope.city).then(function(response){
        $scope.services = response.data;
        return $scope.services;
    });
}

$scope.onChange = function(e){
    return $scope.getdata();
}

Note: If you are using Angular ui-bootstrap version 1.X+ then you have to use uib- prefix before each ui-bootstrap directive like in your case it would be uib-typeahead instead of typeahead.