Upon receiving data from the server request, I am unable to update the color of the knob to match the image provided at this link screencast. Below is my code:
JavaScript Code
$scope.options = { /* knob option */ };
$http
.get(url)
.then(function(res) {
$scope.details = res.data.rating // need to display $scope.details in the knob
}, function(err) {});
HTML Code
<ui-knob value="details" options="options"></ui-knob>
Note: I am utilizing ng-knob
Here is my solution to the problem using the code below:
app.controller('MainCtrl', function($scope, $http) {
$scope.options = { /* settings for knob */ };
$scope.value = 0; // initializing value
$http
.get(apiUrl)
.then(function(response) {
setTimeout(function() {
$scope.value = response.data.score; // fetching data from server
}, 1000);
}, function(error) {});
});
//1. The code you have is async //2. You need to use either a promise, resolve in your router, or $scope.apply() after receiving a response in your controller
//Option 1 (Promise):
//Code in Controller
var vm = this;
vm.asyncGreet = function () {
var deferred = $q.defer();
$http({
method: 'post',
data: $httpParamSerializerJQLike({
//***your-send-data***
}),
headers: {'Content-Type': 'application/x-www-form-urlencoded'},
url: ''//***your-url***
}).
success(function (data, status) {
deferred.resolve('true');
});
return deferred.promise;
};
var promise = vm.asyncGreet();
promise.then(function (greeting) {
//alert('Success: ' + greeting);
//YOUR CODE AFTER SERVER REQUEST
$scope.details = res.data.rating;
}, function (reason) {
//alert('Failed: ' + reason);
}, function (update) {
//alert('Got notification: ' + update);
});
//Option 2 (Resolve in your Route)
(function (angular) {
'use strict';
// route-config.js
angular
.module('app')
.config(config);
config.$inject = ['$routeProvider'];
function config($routeProvider) {
console.log('routeConfig');
$routeProvider
.when('/requests', {
templateUrl: '/tpl.html',
controller: 'requestController',
controllerAs: 'vm',
//(Promise) IS REQUEST TO SERVER, AFTER START requestController
resolve: {
requestPrepService: requestPrepService
}
});
}
requestPrepService.$inject = ['requestService'];
function requestPrepService(requestService) {
//This $http response
return requestService.getRequests();
}
})(window.angular);
//in Controller
.$inject = ['requestPrepService'];
vm.request = {
data: requestPrepService.data,
}
//Addition
1. If you use promise do not forget $inject = ['$q']
2. Please, read https://docs.angularjs.org/api/ng/directive/ngCloak
(
how use:
<div ng-controller="yourController" ng-cloak></div>
)
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