Develop Reference

How activate ng-class only on one element?

I have ng-repeat and ng-class for each element. I use it for selecting elements (add border for selected).
<div class="main-block_channel_create">
<section class="parent_messageList cancelDelete">
<div id="section_animate" class="messagesList_block cancelDelete" infinite-scroll='messagelist.nextSet()' infinite-scroll-listen-for-event='anEvent' infinite-scroll-distance='100'>
<!-- User Images List -->
<a href="" class="messageBl message_preview animated" ng-repeat='preview in messagelist.previewList'>
<div class="image_container_preview" ng-class="{community_select: item.isSelected}" ng-click='communitySelect(preview)' attr="{{preview.preview_id}}">
<img class="deleteMessageBtn" src="images/close_icon.svg" ng-click="deleteMessage(preview.message_id)">
<div class="spinner_container">
<!--<img src="/images/logo-80.svg" class='spinner_img'>-->
<img class="spinner_logo_vertical" src="images/logo_vertical-part.svg" alt="">
<img class="spinner_logo_left" src="images/logo_left-part.svg" alt="">
<img class="spinner_logo_right" src="images/logo_right-part.svg" alt="">
</div>
<img class="message_preview-image" src="{{preview.image}}" alt="">
<!-- Tсли нет изображения — показываем текст -->
<div class="message_preview-text MediumNormalJunior" ng-if="!preview.image">
<div class="message_preview-text-inner" ng-if='preview.name'>
{{preview.name}}
</div>
<!-- если нету и текста показываем empty-->
</div>
<div class="empty_message" ng-if='!preview.text && !preview.image'>
<!--<h4>Empty</h4> -->
</div>
</div>
<div class="stats" ng-show='preview.total_score > 0'>
<p>{{preview.total_score}}</p>
</div>
</a>
<footer class="listFooter">
</footer>
</div>
</section>
sass
.community_select
border: 3px solid white
directive
(function(){
'use strict';
angular
.module('buzz')
.directive('channelcreate', channelcreate);
function channelcreate($rootScope, $location, $timeout, $cookies, $window, communityApiService, getCommunities){
return{
restrict: "E",
replace: true,
scope: true,
templateUrl: '/templates/channelCreate/channelCreate.html',
link: function($scope){
// $rootScope.showChannelCreate = null;
// Select communities for create new channel
$scope.communityList = [];
$scope.communitySelect = function(communityId){
$scope.selected = false;
if ($scope.communityList.indexOf(communityId) == -1){
$scope.communityList.push(communityId);
} else {
$scope.communityList.pop(communityId)
}
console.log($scope.communityList);
};
// all messages preview are loaded from messagesLoadFactory
$scope.messagelist = new getCommunities();
}
};
};
})();
I can identify each div by id when it is clicked. How can I change only one element, but not all of them?

Following your login... an option can be to check if the element's id is in the list of selected elements with communityList.indexOf(preview.id) != -1 so your ng-class would look like:
ng-class="{community_select: communityList.indexOf(preview.id) != -1}"
Edit
Also, when deleting an id from the $scope.communityList make sure you first find its index and then remove it with splice.
Now the portion for removing/adding the id would look like this:
// ... content omitted
$scope.communitySelect = function(communityId) {
$scope.selected = false;
var index = $scope.communityList.indexOf(communityId);
if (index == -1) {
$scope.communityList.push(communityId);
} else {
$scope.communityList.splice(index, 1)
// ^^^ ^
// remove starting_here one_element
}
console.log($scope.communityList);
};
// ... content omitted

I guess you want to keep selection on screen to highlighted, for the same I don't think so you need to maintain extra collection list. Rather you can add flag isSelected on that record and toggle it based on user click.
HTML
I have and ng-repeat and ng-class for each element. I use it for selecting elements (add border for selected).
<a href="" class="messageBl message_preview animated"
ng-repeat='preview in messagelist.previewList'>
<div class="image_container_preview"
ng-class="{community_select: item.isSelected}"
ng-click='communitySelect(preview)'
attr="{{preview.preview_id}}">
</a>
Code
$scope.communitySelect = function(communityId) {
item.isSelected = !item.isSelected;
};
And whenever you need list of selected previews, you can easily loop over the previews collection and grab those ones who have isSelected flag ticked.
var selected = $scope.previews.map(i => i.isSelected);

Change div content dynamically on ng-click AngularJS

I want to display some data and tables in the content div which depends on which category you choose on the left hand side navigation.
So if I change the category also the displayed content of the content div should change.
Here is my code on Plunkr.
But it seems that not even this simple example is working.
So I have two Questions:
1.) How can I fix this example code to run ?
But more important:
2.) Is there a better way to change the content div when you change the category ?

I removed 'this' elements from code and also changed ng-view to ng-show.
<div>
<div ng-show="showApple">{{content}}</div>
<div ng-show="showBanana">{{content}}</div>
<div ng-show="showOrange">{{content}}</div>
</div>
There was something wrong with that you named your div class "content" so I removed that also.
I am sure it isn't a perfect solution but now it works.
link to plnkr

To be honest your best bet is to use $states/views. With a data-ui-view on the content div and a data-ui-sref link on the button on your menu, you can easily switch out content. Take a look at the ui-router page to get a better understanding of it. With templates for each 'view' that your menu will click to, your code will not just be much easier to manage, but probably more understandable.

You can use ng-include to show your contents but you have to keep them in seperate files e.g contentForApple, contentForBanana and contentForOrange.
Here I can show you a little change in your div
<div class="content">
<div ng-show="MainCtrl.showApple" ng-include ="'contentForApple.html'"></div>
<div ng-show="MainCtrl.showBanana" ng-include = "'contentForBanana.html'"></div>
<div ng-show="MainCtrl.showOrange" ng-include = "'contentForOrange.html'"></div>
</div>

Hope this help you. Take one json array for category and data and get details of json data which index is clicked
<!DOCTYPE html>
<html>
<link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css">
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body ng-app="myApp" ng-controller="MyController">
<div class="container">
<div class="row">
<div class="col-lg-3">
<ANY ng-repeat="x in category" ng-click="getData($index)">
{{x.category}}<br>
</ANY>
</div>
<div class="col-lg-6">
{{data}}
</div>
</div>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('MyController', function ($scope)
{
$scope.data = '';
$scope.category = [{category:'Apple',data:'Apple Data'},{category:'Banana',data:'Banana Data'},{category:'Orange',data:'Orange Data'}];
$scope.getData = function(index)
{
$scope.data = $scope.category[index]['data'];
}
});
</script>
</body>
</html>

I did it with simple ngif
1) Keep an Index of Page which needs to be is loaded now
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.name = 'World';
$scope.pageIndex = 0;
/*
* Updates current Page index
*/
$scope.changeIndex= function(indexToChange){
$scope.pageIndex = indexToChange;
}
});
2) Load content based on selected index
<body ng-controller="MainCtrl">
<div class="mainframe">
<div class="navigation">
<ul class="list-group">
<li class="list-group-item" ng-click="changeIndex(0)">Home<span class="status-icon"></span></li>
<li class="list-group-item" ng-click="changeIndex(1)">Sign Up<span class="status-icon"></span></li>
<li class="list-group-item" ng-click="changeIndex(2)">About<span class="status-icon"></span></li>
</ul>
</div>
<div class="content">
<div ng-if="pageIndex == 0" ng-include ="'Home.html'"></div>
<div ng-if="pageIndex == 1" ng-include = "'SignUp.html'"></div>
<div ng-if="pageIndex == 2" ng-include = "'About.html'"></div>
</div>
</div>
Final Result:
https://embed.plnkr.co/ic0eY2vwiOnChN2ahrEt/

How do I access ng-show directive with ng-click? AngularJS

I just started learning so I'm creating a todo app.
I'm trying to show a div when I click on the edit button to edit my task.
this is my html
<div ng-controller='TasksCtrl'>
<div ng-repeat='(key, task) in tasksList' class='task-list'>
<div class='easy'>
<div class='div-list-style'></div>
<div id='task-{{key}}' style='cursor:pointer;z-index:5'
ng-click='editTask()' data-key='{{key}}' class='options
pull-right glyphicon glyphicon-pencil'>
</div>
<div class='task-desc' ng-bind='task.description'></div>
<div ng-hide='taskEdit = true'>FORM</div>
</div>
</div>
</div
This is my controller
todoApp.controller('TasksCtrl',['$scope', 'saveTaskService', function($scope, saveTaskService){
$scope.editTask= function(){
todoApp.directive('taskEdit', function(){
return function(scope, element){
//so I guess over here I need do ngHide = 'false' ? //
alert(element.attr('data-key'));
};
});
};
}]);

Here is a quick solution, you have a scope variable called taskShow that will tell ng-hide when to show it, then on ng-click you will trigger a function that will toggle that value:
<div ng-controller='TasksCtrl'>
<div ng-repeat='(key, task) in tasksList' class='task-list'>
<div class='easy'>
<div class='div-list-style'></div>
<div id='task-{{key}}' style='cursor:pointer;z-index:5'
ng-click='toggleHide(key)' data-key='{{key}}' class='options
pull-right glyphicon glyphicon-pencil'>
</div>
<div class='task-desc' ng-bind='task.description'></div>
<div ng-show='taskShow[key]'>FORM</div>
</div>
</div>
</div>
Controller:
todoApp.controller('TasksCtrl',['$scope', 'saveTaskService', function($scope, saveTaskService){
$scope.taskShow = {};
$scope.toggleHide = function (key) {
$scope.taskShow[key] = !$scope.taskShow[key];
};
}]);
Edit: switched ng-hide to ng-show so the divs are hidden by default and only shown when the other is clicked.

Adding objects to the DOM after adding new data to the list

I have an array of objects which i populate on a button click.
When populating this array i make sure that i only add 10 objects to it.
When this is all loaded in the dom i give the user the oppertunity to add a few more objects.
I do this like this:
$scope.Information = [];
$.each(data, function (i, v) {
if (i<= 9)
$scope.Information.push(data[i]);
if(i >= 10) {
cookieList.push(data[i]);
}
}
if (cookieList.length) {
localStorage.setItem("toDoList", JSON.stringify(cookieList));
$(".showMore").removeClass("hidden");
}
$(".showMore").on("click", function() {
var obj = JSON.parse(localStorage.getItem("toDoList"));
console.log(obj);
console.log(obj.length);
SetSpinner('show');
$scope.Information.push(obj);
SetSpinner('hide');
//$.removeCookie("toDoList2");
});
part of the HTML:
<div ng-repeat="info in Information" class="apartment container" style="padding-right:35px !important">
<div class="row" style="height:100%">
<div class="col-md-1 col-xs-12">
<div>
<h4 class="toDoListHeadings">Nummer</h4>
<div style="margin-top: -15px; width:100%">
<span class="toDoListItems number">
{{info.orderraderid}}
</span>
</div>
</div>
</div>
</div>
</div>
My issue: When i add objects to my array of objects "$scope.Information.push(obj);" I assumed that they would get added in the DOM but they do not, how do i do this the angular way?
EDIT MY SOLOUTION:
edited the HTML to use ng-click and the method is as follows:
$scope.addMore = function() {
var obj = JSON.parse(localStorage.getItem("toDoList"));
SetSpinner('show');
$.each(obj, function(i,v) {
$scope.Information.push(v);
});
SetSpinner('hide');
}

Here is the angular way:
 The view
<!-- Reference your `myapp` module -->
<body data-ng-app="myapp">
<!-- Reference `InfoController` to control this DOM element and its children -->
<section data-ng-controller="InfoController">
<!-- Use `ng-click` directive to call the `$scope.showMore` method binded from the controller -->
<!-- Use `ng-show` directive to show the button if `$scope.showMoreButton` is true, else hide it -->
<button data-ng-click="showMore()" data-ng-show="showMoreButton">
Show more
</button>
<div ng-repeat="info in Information" class="apartment container" style="padding-right:35px !important">
<div class="row" style="height:100%">
<div class="col-md-1 col-xs-12">
<div>
<h4 class="toDoListHeadings">Nummer</h4>
<div style="margin-top: -15px; width:100%">
<span class="toDoListItems number">
{{info.orderraderid}}
</span>
</div>
</div>
</div>
</div>
</div>
</section>
</body>
The module and controller
// defining angular application main module
var app = angular.module('myapp',[])
// defining a controller in this module
// injecting $scope service to the controller for data binding with the html view
// (in the DOM element surrounded by ng-controller directive)
app.controller('InfoController',function($scope){
$scope.Information = [];
$scope.showMoreButton = false;
// Bind controller method to the $scope instead of $(".showMore").on("click", function() {});
$scope.showMore = function(){
var obj = JSON.parse(localStorage.getItem("toDoList"));
console.log(obj);
console.log(obj.length);
SetSpinner('show');
$scope.Information.push(obj);
SetSpinner('hide');
//$.removeCookie("toDoList2");
};
$.each(data, function (i, v) {
if (i<= 9) $scope.Information.push(data[i]);
if(i >= 10) cookieList.push(data[i]);
});
if (cookieList.length) {
localStorage.setItem("toDoList", JSON.stringify(cookieList));
//$(".showMore").removeClass("hidden");
$scope.showMoreButton = true; // use $scope vars and ng-class directive instead of $(".xyz").blahBlah()
}
});

You should not use JQuery, use ng-click to detect the click, because angular has no idea when JQuery is done and when it needs to refresh the interface

Reset data on click for a different controller

I have two divs - the first contains the second. The contained div has its own controller. When I click an icon button in the container, I change a variable which then affects the visibility of the contained div.
It looks like this:
<div ng-controller="BarController">
<div class="navbar navbar-default navbar-fixed-top">
<div class="container-fluid">
<div class="col-lg-2 page-title">My Page</div>
<div class="col-lg-10">
<span class="actions">
<i class="fa fa-lg fa-download fa-inverse" tooltip="Download"
ng-click="showSecondaryBar=!showSecondaryBar"></i>
</span>
</div>
</div>
</div>
<div class="download navbar download-in download-out"
ng-class="{'myhidden': !showSecondaryBar}"
ng-cloak>
<div class="col-lg-offset-4 col-lg-4 form-inline form-group" ng-controller="TagsController">
<div class="download-label col-lg-6">
<label>Download by tags:</label>
</div>
<div class="download-tags col-lg-6">
<tags-input class="bootstrap" spellcheck="false" min-length="1" ng-model="tags" add-from-autocomplete-only="true">
<auto-complete source="loadTags($query)" min-length="1" load-on-down-arrow="true"
load-on-focus="true" max-results-to-show="5"
highlight-matched-text="false"></auto-complete>
</tags-input>
</div>
</div>
</div>
</div>
The <tags-input> is taken from ng-tags-input and I would like to reset the tags that were already typed to it whenever the icon button is clicked (which changes the visilibyt of the div that contains the ng-tags-input).
Problem is, because I have the TagsController which contains the data (tags) and this data is not visible in the BarController, I'm not sure how I can reset the tags array to become empty.
I thought of using a service but it fills like too much of a coupling. I would prefer to have a function in TagsController which is called upon click. But I can't figure out how to do it from another controller

You are right you have to use a service.
Why don't you use a broadcast as your TagsController is included in BarController?
You can include a scope.broadcast("Event") in BarController
Then a "on" listener on TagsController who will reset the tags array when "Event" Occur.
I would personnaly to this.
https://docs.angularjs.org/api/ng/type/$rootScope.Scope

You can use $broadcast on $rootScope to send an event to TagsController. So TagsController can receive this event by registering an event listener for it. See following example.
Refer to $rootScope API docs
angular.module('app',[])
.controller('ParentController', function($rootScope) {
var parentCtrl = this;
parentCtrl.someFlag = true;
parentCtrl.changeFlag = function() {
parentCtrl.someFlag = !parentCtrl.somFlag;
$rootScope.$broadcast('resettags', {'defaultTags': 'whatever_tag'});
}
})
.controller('ChildController', function($rootScope){
var childCtrl = this;
childCtrl.tags = "Some tags entered by user";
$rootScope.$on('resettags', function(event, args) {
childCtrl.tags = args.defaultTags;
});
});
.myHidden {
display: none;
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app">
<div id="main" ng-controller="ParentController as parentCtrl">
<button type="button" ng-click="parentCtrl.changeFlag()">Toggle</button>
<div ng-class="{'myHidden' : !parentCtrl.someFlag}">
<div ng-controller="ChildController as childCtrl">
<h1>{{childCtrl.tags}}</h1>
</div>
</div>
</div>
</div>