get selected checkbox values from tree in angularjs - javascript

I would like to know how can we get the selected checkbox values from tree in controller from the below example? On click of a button i want to display all the checkbox names in an array. Here is my plnkr- https://plnkr.co/edit/OSpLLl9YrlzqhM7xsYEv?p=preview
//code goes here,
//Controller
Controller to display the tree.
(function (ng) {
var app = ng.module('tree', ['tree.service', 'tree.directives']);
app.controller("TreeController", ["TreeService", function (TreeService) {
var tc = this;
buildTree();
function buildTree() {
TreeService.getTree().then(function (result) {
tc.tree = result.data;
}, function (result) {
alert("Tree no available, Error: " + result);
});
}
}]);
})(angular);
//Tree Directive
Directive used for creating tree node.
(function (ng) {
var app = ng.module('tree.directives', []);
app.directive('nodeTree', function () {
return {
template: '<node ng-repeat="node in tree"></node>',
replace: true,
restrict: 'E',
scope: {
tree: '=children'
}
};
});
app.directive('node', function ($compile) {
return {
restrict: 'E',
replace: true,
templateUrl: 'node.html', // HTML for a single node.
link: function (scope, element) {
/*
* Here we are checking that if current node has children then compiling/rendering children.
* */
if (scope.node && scope.node.children && scope.node.children.length > 0) {
scope.node.childrenVisibility = true;
var childNode = $compile('<ul class="tree" ng-if="!node.childrenVisibility"><node-tree children="node.children"></node-tree></ul>')(scope);
element.append(childNode);
} else {
scope.node.childrenVisibility = false;
}
},
controller: ["$scope", function ($scope) {
// This function is for just toggle the visibility of children
$scope.toggleVisibility = function (node) {
if (node.children) {
node.childrenVisibility = !node.childrenVisibility;
}
};
// Here We are marking check/un-check all the nodes.
$scope.checkNode = function (node) {
node.checked = !node.checked;
function checkChildren(c) {
angular.forEach(c.children, function (c) {
c.checked = node.checked;
checkChildren(c);
});
}
checkChildren(node);
};
}]
};
});
})(angular);

Hello: Look at this plunker link. It works here
https://plnkr.co/edit/vaoCzUJZBf31wtLNJ5f5?p=preview
(function (ng) {
var app = ng.module('tree', ['tree.service', 'tree.directives']);
app.controller("TreeController", ["TreeService", "$scope", function (TreeService, $scope) {
var tc = this;
buildTree();
function buildTree() {
TreeService.getTree().then(function (result) {
tc.tree = result.data;
}, function (result) {
alert("Tree no available, Error: " + result);
});
}
$scope.selectedItems = [];
$scope.getSelected = function(){
$scope.selectedItems = [];
function checkChildren(c) {
angular.forEach(c.children, function (c) {
if (c.checked){
$scope.selectedItems.push({"selected":c.name});
}
checkChildren(c);
});
}
angular.forEach(tc.tree, function(value, key) {
if (value.checked){
$scope.selectedItems.push({"selected":value.name});
}
checkChildren(value);
});
};
}]);})(angular);

Related

Can't update view from $timeout

I'm loading a page with 3 collapsible panels, all containing a grid.
I can successfully load the panel as expanded (also tested with collapsed), using this code:
var component = {
bindings: {
configurationMigrationLogs: '<'
},
template: require("./reMigrationConfiguration.template.html"),
controller: ControllerFn,
controllerAs: 'vm'
};
ControllerFn.$inject = ['$timeout'];
function ControllerFn($timeout) {
const vm = this;
vm.isCardOpen = true; //Does work.
$timeout(function (vm) {
vm.isCardOpen = false; //Doesn't work.
console.log(vm);
}, 3000, true, vm);
}
export default function (app) {
app.component('reMigrationConfiguration', component);
}
However, when I try to collapse the panel in the $timeout function, it doesn't work.
I can see the vm.isCardOpen property is updated to false, in the console window.
But the panel remains expanded.
Here's the HTML:
<re-card is-collapsed="true" is-open="vm.isCardOpen" ng-repeat="configurationMigrationLog in vm.configurationMigrationLogs">
<!--grid code here-->
</re-card>
The re-card component is set up in this .js:
(function() {
'use strict';
angular.module('app.components')
.directive('reCard', directiveFn);
directiveFn.$inject = ['$timeout'];
function directiveFn($timeout) {
var directive = {
restrict:'EA',
scope:true,
priority:10,
controller:controllerFn,
transclude:true,
controllerAs:'reCard',
template: '<div>' +
'<div re-blocked="isBlocked" re-loading="isBusy"> ' +
'<div class="grid simple fadeIn animated" ' +
'ng-class="{collapsible:isCollapsible, \'is-open\':!isCollapsed }" ' +
're-transclude></div>' +
'</div></div>',
link:{
pre:preLinkFn,
post:postLinkFn
}
};
return directive;
function preLinkFn(scope, ele, attrs) {
if (attrs.isCollapsed) {
scope.isCollapsed = scope.$eval(attrs.isCollapsed);
scope.isCollapsible = attrs.isCollapsed;
scope.isOpen = scope.$eval(attrs.isOpen);
}
}
function postLinkFn(scope, ele, attrs, ctrl) {
var blockWatcher, obsv;
scope.isBusy = false;
if (attrs.notifyOfToggle) {
ctrl.registerNotifyOfToggle(attrs.notifyOfToggle);
}
if (attrs.isBlocked) {
blockWatcher = scope.$parent.$watch(attrs.isBlocked, function(val) {
scope.isBlocked = val;
});
}
if (attrs.hasOwnProperty('isBusy')) {
obsv = attrs.$observe('isBusy', function(val) {
if (val && scope.$eval(val)) {
scope.isBusy = true;
}
else {
scope.isBusy = false;
}
});
}
scope.$on('destroy', function() {
blockWatcher();
});
attrs.$observe('isOpen', function(val) {
if (typeof(val) !== 'undefined') {
ctrl.toggleCollapsed(!scope.$eval(val));
}
});
}
}
controllerFn.$inject = ['$scope'];
function controllerFn($scope) {
var notifyOfToggle = null;
this.getScope = function() {
return $scope;
};
this.toggleCollapsed = function(val) {
if (typeof($scope.isCollapsed) !== 'undefined') {
if (angular.isDefined(val)) {
$scope.isCollapsed = val;
} else {
$scope.isCollapsed = !$scope.isCollapsed;
}
if (notifyOfToggle) {
$scope.$eval(notifyOfToggle);
}
}
};
this.registerNotifyOfToggle = function(notifyOfToggleFromAttrs) {
notifyOfToggle = notifyOfToggleFromAttrs;
};
}
})();
Binding your is-open attribute should fix it:
<re-card is-collapsed="true" is-open="{{vm.isCardOpen}}" ng-repeat="configurationMigrationLog in vm.configurationMigrationLogs">
<!--grid code here-->
</re-card>

Angular service return undefined

I have a problem with my service in angular.
My service has the next code:
app.service("Utilidades", ['$http', '$window', function ($http, $window) {
return {
Get: function (urlAbsoluta, parametros, callback) {
var Utilidades = this;
$http
.get(app.UrlBase + urlAbsoluta, parametros)
.then(function (data) {
var Datos = angular.fromJson(data);
Utilidades.GuardarToken(Datos.Token);
callback(Datos);
});
},
ObtenerMenu: function () {
var Utilidades = this;
Utilidades.Get("Administracion/Api/Usuarios/Menu", {}, function (Datos) {
Datos = angular.fromJson(Datos.data);
if (Datos.Error == "") {
return Datos.Resultado;
} else {
return "";
}
});
}
}
}]);
Then, in my controller i have the next code:
app.controller('LoginCtrl', ['$scope', '$http', '$location', 'Utilidades',
function Iniciador($scope, $http, $location, Utilidades) {
var Li = this;
Li.Usuario = "";
Li.Contrasena = "";
Li.Error = "";
Li.MenuItems = [];
Li.Menu = function () {
Li. MenuItems = Utilidades.ObtenerMenu();
}
}]
);
When i run this, Li.MenuItems have undefined value and i don't know why.
Your return statements are in a function inside your ObtenerMenu method so the ObtenerMenu method is not actually returning anything. You need to provide a way to access the resulting value:
Service
app.service("Utilidades", ['$http', '$window', function ($http, $window) {
return {
Get: function (urlAbsoluta, parametros) {
var Utilidades = this;
// v------------ return statement here
return $http
.get(app.UrlBase + urlAbsoluta, parametros)
.then(function (data) {
var Datos = angular.fromJson(data);
Utilidades.GuardarToken(Datos.Token);
// v------------ return statement here
return Datos;
});
},
ObtenerMenu: function () {
var Utilidades = this;
// v------------ return statement here
return Utilidades.Get("Administracion/Api/Usuarios/Menu", {})
.then(function (Datos) {
if (Datos.Error == "") {
return Datos.Resultado;
} else {
return "";
}
});
}
};
}]);
In Controller
Li.Menu = function () {
Utilidades.ObtenerMenu()
.then(function (resultado) {
Li. MenuItems = resultado;
});
}
It's because ObtenerMenu function is asynchronous function. This function doesn't return anything initially (so undefined) and later, after some time when ajax request finishes, this function is already finished its execution stack

Why can't i access directive's scope in jasmine test?

Here's my directive:
angular.module('app')
.directive('statusFilter',statusFilter);
function statusFilter() {
return {
restrict: 'E',
replace: true,
templateUrl: 'app/directives/status-filter.html',
scope: {
flags: '='
},
controller: function($scope, $element, $timeout, $document) {
function isChildElement(el) {
return $.contains($element[0], el);
}
function close(event) {
if (!isChildElement(event.target)) {
$scope.$apply(function() {
$scope.isOpen = false;
});
$document.off('mouseup', close);
}
}
function updateFlags(value) {
for (var prop in $scope.flagsClone) {
$scope.flagsClone[prop] = value;
}
}
function pullFlags() {
$scope.flagsClone = $.extend(true, {}, $scope.flags);
}
function pushFlags() {
for (var prop in $scope.flagsClone) {
$scope.flags[prop] = $scope.flagsClone[prop];
}
}
$scope.isOpen = false;
$scope.flagsClone = {};
pullFlags();
$scope.apply = function() {
pushFlags();
$scope.isOpen = false;
};
$scope.selectAll = function() {
updateFlags(true);
};
$scope.selectNone = function() {
updateFlags(false);
};
$scope.open = function() {
if (!$scope.isOpen) {
pullFlags();
$scope.isOpen = true;
$timeout(function() {
$document.on('mouseup', close);
});
}
};
}
};
}
Here's a simple test i wrote for it:
describe('status-filter directive', function() {
beforeEach(module('app'));
var template = '<status-filter flags="filters"></status-filter>';
var scope, element;
beforeEach(inject(function($rootScope, $compile) {
scope = $rootScope.$new();
var ngElement = angular.element(template);
element = $compile(ngElement)(scope);
scope.$digest();
}));
it('Should open when isOpen is true', function() {
scope.open();
scope.$digest();
expect(scope.isOpen).toBe(true);
});
});
I cannot access the directive's scope no matter how i try. Like in the example above, .isolateScope(), element.scope(). With anything i try i get open() is undefined error. What is wrong in my code?
The reason why I couldn't access the scope was that I didn't create the filters variable. So this will work:
describe('status-filter directive', function() {
beforeEach(module('app'));
var template = '<status-filter flags="filters"></status-filter>';
var scope, element;
beforeEach(inject(function($rootScope, $compile) {
scope = $rootScope.$new();
scope.filters = {
filter1:true;
}
var ngElement = angular.element(template);
element = $compile(ngElement)(scope);
scope.$digest();
}));
it('Should open when isOpen is true', function() {
scope.open();
scope.$digest();
expect(scope.isOpen).toBe(true);
});
});

$watch is not called in angularjs

Hi I am newbie to angular I am trying to update using ng-click directive and $watch function. On first click it is getting updated but second time it doesn't get updated. Bare my english and little knowledge Here is my code.
angular.module('charts', [])
.factory('socket', ['$rootScope', function ($rootScope) {
var safeApply = function(scope, fn) {
if (scope.$$phase) {
fn(); // digest already in progress, just run the function
} else {
scope.$apply(fn); // no digest in progress, run with $apply
}
};
var socket = io.connect('http://localhost:5000/');
return {
on: function (eventName, callback) {
socket.on(eventName, function () {
var args = arguments;
safeApply($rootScope, function () {
callback.apply(socket, args);
});
});
},
emit: function (eventName, data, callback) {
socket.emit(eventName, data, function () {
var args = arguments;
safeApply($rootScope, function () {
if (callback) {
callback.apply(socket, args);
}
});
})
},
disconnect: function () {
socket.disconnect();
},
socket: socket
};
}])
.controller('mainCtrl',['$scope','socket', function AppCtrl ($scope, socket) {
$scope.options = {width: 500, height: 300, 'bar': 'aaa'};
$scope.data = {"angular":12,"js":15};
$scope.hovered = function(d){
$scope.barValue = d.name;
//$scope.$apply();
};
$scope.barValue = 'None';
}])
.directive('barChart', function(){
var chart = d3.custom.barChart();
return {
restrict: 'E',
replace: true,
template: '<div class="chart"></div>',
scope:{
height: '=height',
data: '=data',
hovered: '&hovered'
},
link: function(scope, element, attrs) {
var chartEl = d3.select(element[0]);
chart.on('customHover', function(d, i){
scope.hovered({args:d});
});
scope.$watch('data', function (newVal, oldVal) {
console.log(newVal);
chartEl.datum(newVal).call(chart);
});
scope.$watch('height', function(d, i){
chartEl.call(chart.height(scope.height));
})
}
}
})
.directive('chartForm', function(){
return {
restrict: 'E',
replace: true,
controller: function AppCtrl ($scope, socket) {
$scope.start = function(d, i) {
$scope.btnIsDisabled = true;
socket.on("connected",function(r){ console.log('breakpoint 1');/*console.log(r);*/ });
socket.on("new tweet", function(tweet) {
var hashtags = tweet.entities.hashtags;
if(hashtags.length) {
_.each(hashtags, function(hashtag) {
hashtag = hashtag.text.toLowerCase();
// if(hashtag == 'food' || hashtag == 'pizza' || hashtag == 'samosa') {
// console.log(hashtag);
if(_hashtags[hashtag]) {
_hashtags[hashtag]++;
}
else {
_hashtags[hashtag] = 1;
}
//}
});
}
num_tweets++;
});
};
$scope.update = function(d, i) {
$scope.safeApply = function(fn) {
var phase = this.$root.$$phase;
if(phase == '$apply' || phase == '$digest') {
if(fn && (typeof(fn) === 'function')) {
fn();
}
} else {
this.$apply(fn);
}
};
$scope.safeApply( function() {
console.log(JSON.stringify(_hashtags));
$scope.data = _hashtags;
});
};
},
template: '<div class="form">' +
'Height: {{options.height}}<br />' +
'<input type="range" ng-model="options.height" min="100" max="800"/>' +
'<br /><button ng-click="start()" ng-disabled="btnIsDisabled">Start</button>'+
'<button ng-click="update()" ng-disabled="false">Update Data</button>' +
'<br />Hovered bar data: {{barValue}}</div>'
}
});

Strange behavior passing scope to directive

I have created a directive below:
html:
<div image-upload></div>
directive:
angular.module('app.directives.imageTools', [
"angularFileUpload"
])
.directive('imageUpload', function () {
// Directive used to display a badge.
return {
restrict: 'A',
replace: true,
templateUrl: "/static/html/partials/directives/imageToolsUpload.html",
controller: function ($scope) {
var resetScope = function () {
$scope.imageUpload = {};
$scope.imageUpload.error = false;
$scope.imageUpload['image_file'] = undefined;
$scope.$parent.imageUpload = $scope.imageUpload
};
$scope.onImageSelect = function ($files) {
resetScope();
$scope.imageUpload.image_file = $files[0];
var safe_file_types = ['image/jpeg', 'image/jpg']
if (safe_file_types.indexOf($scope.imageUpload.image_file.type) >= 0) {
$scope.$parent.imageUpload = $scope.imageUpload
}
else {
$scope.imageUpload.error = true
}
};
// Init function.
$scope.init = function () {
resetScope();
};
$scope.init();
}
}
});
This directive works fine and in my controller I access $scope.imageUpload as I required.
Next, I tried to pass into the directive a current image but when I do this $scope.imageUpload is undefined and things get weird...
html:
<div image-upload current="project.thumbnail_small"></div>
This is the updated code that gives the error, note the new current.
angular.module('app.directives.imageTools', [
"angularFileUpload"
])
.directive('imageUpload', function () {
// Directive used to display a badge.
return {
restrict: 'A',
replace: true,
scope: {
current: '='
},
templateUrl: "/static/html/partials/directives/imageToolsUpload.html",
controller: function ($scope) {
var resetScope = function () {
$scope.imageUpload = {};
$scope.imageUpload.error = false;
$scope.imageUpload['image_file'] = undefined;
$scope.$parent.imageUpload = $scope.imageUpload
if ($scope.current != undefined){
$scope.hasCurrentImage = true;
}
else {
$scope.hasCurrentImage = true;
}
};
$scope.onImageSelect = function ($files) {
resetScope();
$scope.imageUpload.image_file = $files[0];
var safe_file_types = ['image/jpeg', 'image/jpg']
if (safe_file_types.indexOf($scope.imageUpload.image_file.type) >= 0) {
$scope.$parent.imageUpload = $scope.imageUpload
}
else {
$scope.imageUpload.error = true
}
};
// Init function.
$scope.init = function () {
resetScope();
};
$scope.init();
}
}
});
What is going on here?
scope: {
current: '='
},
Everything works again but I don't get access to the current value.
Maybe I'm not using scope: { correctly.
in your updated code you use an isolated scope by defining scope: {current: '=' } so the controller in the directive will only see the isolated scope and not the original scope.
you can read more about this here: http://www.ng-newsletter.com/posts/directives.html in the scope section

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