AngularJS: nested array and view update - angularjs

I'm having problems updating the view after an Array inside an Array is updated in the $scope.
First i check if the Array member already exists:
$scope.myArray = [];
if(typeof $scope.myArray[someIndex] == 'undefined') {
$scope.myArray[someIndex] = {
name: someName,
data: []
};
}
Then push to $scope.myArray[someIndex].data:
$scope.myArray[someIndex].data.push(dataContent);
At this point the view does not update.
Of course if i directly push to $scope.myArray it does. Any suggestions?
Edit: Fiddle here

It was simpler than it looked.
Based on the response here i am setting an associative array which allows set string keys. If you declare your array as =[] you simply cannot set strings as keys.
So i just changed my declaration $scope.myArray=[] to $scope.myArray={} and voilà, it works.

Try:
if(typeof $scope.myArray[someIndex] == 'undefined') {
$scope.$eval(function(){
$scope.myArray[someIndex] = {
name: someName,
data: []
};
$scope.myArray[someIndex].data.push(dataContent);
});
}

This works:
HTML,
<div ng-app>
<div ng-controller="NestedCtrl">
<article ng-repeat="member in myArray">
{{member.name}}
<article ng-repeat="next in member.data">
{{next.nested}}
</article>
</article>
</div>
</div>
Angular JS:
function NestedCtrl($scope) {
$scope.myArray = [];
var callMe = function(){
if(typeof $scope.myArray[0] == 'undefined') {
$scope.myArray[0] = {
name: 'Hello',
data: []
};
}
$scope.myArray[0].data.push({nested : 'yay'});
}
callMe();
}

Related

Angularjs Filter by an Array of values

i've checqued this :
AngularJS filter based on array of strings?
But i've still got difficulties to know how to do :
My data model is this, they are footballers :
$scope.footballers = [
{'identifiant':1,'prenom':'Jean','nom':'Valjean','categorie':1,'ville':'Détroit','age':12,'date_embauche':'','salaire':25,'photo':'1.jpg','vitesse':55,'agilite':3,'deduction':25,'choisi':false},
{'identifiant':2,'prenom':'Aziz','nom':'Jojo','categorie':2,'ville':'Paris','age':14,'date_embauche':'','salaire':25,'vitesse':57,'agilite':31,'deduction':25,'choisi':false},
{'identifiant':3,'prenom':'Thierry','nom':'Goubert','categorie':1,'ville':'Paris','age':17,'date_embauche':'','salaire':28,'photo':'2.jpg','vitesse':45,'agilite':3,'deduction':2,'choisi':false},
{'identifiant':4,'prenom':'Roland','nom':'Grondin','categorie':2,'ville':'Paris','age':14,'date_embauche':'','salaire':25,'vitesse':5,'agilite':34,'deduction':2,'choisi':false},
{'identifiant':5,'prenom':'Gogok','nom':'Rodolphe','categorie':1,'ville':'Paris','age':17,'date_embauche':'','salaire':28,'photo':'3.jpg','vitesse':68,'agilite':75,'deduction':2,'choisi':false},
{'identifiant':6,'prenom':'Thierry','nom':'Chalamerto','categorie':1,'ville':'Paris','age':17,'date_embauche':'','salaire':28,'vitesse':55,'agilite':57,'deduction':75,'choisi':false},
{'identifiant':7,'prenom':'Gawivk','nom':'Gonzogues','categorie':2,'ville':'Paris','age':14,'date_embauche':'','salaire':25,'vitesse':10,'agilite':44,'deduction':2,'choisi':false},
{'identifiant':8,'prenom':'Thomas','nom':'Choubal','categorie':1,'ville':'Paris','age':12,'date_embauche':'','salaire':28,'vitesse':5,'agilite':3,'deduction':2,'choisi':false}
];
Now, I would like to display only the footballer who has the identifiant 2,3 and 8 for example.
Let's say I 've got this array :
var iwanttofilter = [2,3,8];
How could i do to filter with angularJs, firstly, in my ng-repeat, and secondly directly into my controller ?
Thank you.
In pure angular way
var filteredList = $filter('filter')($scope.footballers, function (i) {
return (i.identifiant === 2 || i.identifiant === 3 || i.identifiant === 8);
});
you can create a custom filter like this
.filter('cust',function(){
var iwanttofilter = [2,3,8];
return function(item){
return item.filter(o=>iwanttofilter.find(k=> o.identifiant == k))
}
})
in here array will filter according the iwanttofilter array and return the result
Demo
angular.module("app",[])
.controller("ctrl",function($scope){
$scope.footballers = [
{'identifiant':1,'prenom':'Jean','nom':'Valjean','categorie':1,'ville':'Détroit','age':12,'date_embauche':'','salaire':25,'photo':'1.jpg','vitesse':55,'agilite':3,'deduction':25,'choisi':false},
{'identifiant':2,'prenom':'Aziz','nom':'Jojo','categorie':2,'ville':'Paris','age':14,'date_embauche':'','salaire':25,'vitesse':57,'agilite':31,'deduction':25,'choisi':false},
{'identifiant':3,'prenom':'Thierry','nom':'Goubert','categorie':1,'ville':'Paris','age':17,'date_embauche':'','salaire':28,'photo':'2.jpg','vitesse':45,'agilite':3,'deduction':2,'choisi':false},
{'identifiant':4,'prenom':'Roland','nom':'Grondin','categorie':2,'ville':'Paris','age':14,'date_embauche':'','salaire':25,'vitesse':5,'agilite':34,'deduction':2,'choisi':false},
{'identifiant':5,'prenom':'Gogok','nom':'Rodolphe','categorie':1,'ville':'Paris','age':17,'date_embauche':'','salaire':28,'photo':'3.jpg','vitesse':68,'agilite':75,'deduction':2,'choisi':false},
{'identifiant':6,'prenom':'Thierry','nom':'Chalamerto','categorie':1,'ville':'Paris','age':17,'date_embauche':'','salaire':28,'vitesse':55,'agilite':57,'deduction':75,'choisi':false},
{'identifiant':7,'prenom':'Gawivk','nom':'Gonzogues','categorie':2,'ville':'Paris','age':14,'date_embauche':'','salaire':25,'vitesse':10,'agilite':44,'deduction':2,'choisi':false},
{'identifiant':8,'prenom':'Thomas','nom':'Choubal','categorie':1,'ville':'Paris','age':12,'date_embauche':'','salaire':28,'vitesse':5,'agilite':3,'deduction':2,'choisi':false}
];
var iwanttofilter = [2,3,8];
$scope.cust = function(){
return function(item){
return iwanttofilter.find(k=> item.identifiant == k)
}
}
})
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app" ng-controller="ctrl">
<div ng-repeat="item in footballers | filter:cust() track by $index ">{{item.identifiant}} </div>
</div>
You pass the iwanttofilter into the filter, and filter your list based on each item.
MyApp.filter("fewerFootballers", [
function() {
return function(footballers, iwanttofilter) {
return arrayIntersection(footballers, iwanttofilter);
function arrayIntersection(a, b) {
return a.filter(function(x) {
return b.indexOf(x.identifiant) != -1;
});
}
}
}]);
In your html you use the filter.
{{ $scope.footballers | fewerFootballers: $scope.iwanttofilter }}

Compare two arrays and concat without duplicates

I have two arrays. I can push and splice by clicking on a word in searchWords, which adds or removes a word to the currentWordlist.
What I want to have is a button that transfers all the searchWords to the currentWordlist, without overwriting the words that are actually on the currentWordlist.
I came up with this code:
$scope.addAll = function () {
var searchWords = [];
var currentWords = [];
// safes all searchwords to the array
for (var i = 0; i < $scope.searchWords.length; i++) {
searchWords.push($scope.searchWords[i]);
}
// safes all currentwords to the array
for (var j = 0; j < $scope.currentWordlist.length; j++) {
currentWords.push($scope.currentWordlist[j]);
}
console.log("searchWords " + searchWords.length);
console.log("currentWords " + currentWords.length);
angular.forEach(searchWords, function(value1, key1) {
angular.forEach(currentWords, function(value2, key2) {
if (value1._id !== value2._id) {
$scope.currentWordlist.push(value1);
}
});
});
};
I go through both of the arrays and safe them so that I can use the arrays inside my two angular.forEach to check if there are duplicates. If I don't push to the currentWordlist. But it's not working. I get an [ngRepeat:dupes] error, but I cannot use track by $index because otherwise removing from the list removes the wrong word. I think I am doing something critically wrong here, but I couldn't find out what so far (hours of trial and error :0)
I would suggest to use angular unique filter with ng-repeat directive. The code could be as follows:
$scope.addAll = function () {
// use angular.copy to create a new instance of searchWords
$scope.combinedWords = angular.copy($scope.searchWords).concat($scope.currentWordlist);
};
And then in your view:
<div ng-repeat="word in combinedWords | unique:'_id'">
{{word}}
</div>
Usage:
colection | uniq: 'property'
It also possible to filter by nested properties:
colection | uniq: 'property.nested_property'
You can simply do like this
angular.forEach($scope.searchWords, function(value1, key1) {
var temp=true;
angular.forEach($scope.currentWordlist, function(value2, key2) {
if (value1.id === value2.id)
temp=false;
});
if(temp)
$scope.currentWordlist.push(value1);
});
var app = angular.module("app", []);
app.controller("ctrl", function($scope) {
$scope.searchWords=[{id:1,name:'A'},{id:2,name:'B'},{id:1,name:'A'},{id:4,name:'D'}];
$scope.currentWordlist=[];
$scope.addAll = function() {
angular.forEach($scope.searchWords, function(value1, key1) {
var temp=true;
angular.forEach($scope.currentWordlist, function(value2, key2) {
if (value1.id === value2.id)
temp=false;
});
if(temp)
$scope.currentWordlist.push(value1);
});
console.log($scope.currentWordlist);
};
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app" ng-controller="ctrl">
<button ng-click="addAll(newWord)">Add</button>
<div>{{currentWordlist}}</div>
</div>

$filter with OR [duplicate]

I want to use the filter in angular and want to filter for multiple values, if it has either one of the values then it should be displayed.
I have for example this structure:
An object movie which has the property genres and I want to filter for Action and Comedy.
I know I can do filter:({genres: 'Action'} || {genres: 'Comedy'}), but what to do if I want to filter it dynamically. E.g. filter: variableX
How do I set variableX in the $scope, when I have an array of the genres I have to filter?
I could construct it as a string and then do an eval() but I don't want to use eval()...
I would just create a custom filter. They are not that hard.
angular.module('myFilters', []).
filter('bygenre', function() {
return function(movies,genres) {
var out = [];
// Filter logic here, adding matches to the out var.
return out;
}
});
template:
<h1>Movies</h1>
<div ng-init="movies = [
{title:'Man on the Moon', genre:'action'},
{title:'Meet the Robinsons', genre:'family'},
{title:'Sphere', genre:'action'}
];" />
<input type="checkbox" ng-model="genrefilters.action" />Action
<br />
<input type="checkbox" ng-model="genrefilters.family" />Family
<br />{{genrefilters.action}}::{{genrefilters.family}}
<ul>
<li ng-repeat="movie in movies | bygenre:genrefilters">{{movie.title}}: {{movie.genre}}</li>
</ul>
Edit here is the link: Creating Angular Filters
UPDATE: Here is a fiddle that has an exact demo of my suggestion.
You can use a controller function to filter.
function MoviesCtrl($scope) {
$scope.movies = [{name:'Shrek', genre:'Comedy'},
{name:'Die Hard', genre:'Action'},
{name:'The Godfather', genre:'Drama'}];
$scope.selectedGenres = ['Action','Drama'];
$scope.filterByGenres = function(movie) {
return ($scope.selectedGenres.indexOf(movie.genre) !== -1);
};
}
HTML:
<div ng-controller="MoviesCtrl">
<ul>
<li ng-repeat="movie in movies | filter:filterByGenres">
{{ movie.name }} {{ movie.genre }}
</li>
</ul>
</div>
Creating a custom filter might be overkill here, you can just pass in a custom comparator, if you have the multiples values like:
$scope.selectedGenres = "Action, Drama";
$scope.containsComparator = function(expected, actual){
return actual.indexOf(expected) > -1;
};
then in the filter:
filter:{name:selectedGenres}:containsComparator
Here is the implementation of custom filter, which will filter the data using array of values.It will support multiple key object with both array and single value of keys. As mentioned inangularJS API AngularJS filter Doc supports multiple key filter with single value, but below custom filter will support same feature as angularJS and also supports array of values and combination of both array and single value of keys.Please find the code snippet below,
myApp.filter('filterMultiple',['$filter',function ($filter) {
return function (items, keyObj) {
var filterObj = {
data:items,
filteredData:[],
applyFilter : function(obj,key){
var fData = [];
if (this.filteredData.length == 0)
this.filteredData = this.data;
if (obj){
var fObj = {};
if (!angular.isArray(obj)){
fObj[key] = obj;
fData = fData.concat($filter('filter')(this.filteredData,fObj));
} else if (angular.isArray(obj)){
if (obj.length > 0){
for (var i=0;i<obj.length;i++){
if (angular.isDefined(obj[i])){
fObj[key] = obj[i];
fData = fData.concat($filter('filter')(this.filteredData,fObj));
}
}
}
}
if (fData.length > 0){
this.filteredData = fData;
}
}
}
};
if (keyObj){
angular.forEach(keyObj,function(obj,key){
filterObj.applyFilter(obj,key);
});
}
return filterObj.filteredData;
}
}]);
Usage:
arrayOfObjectswithKeys | filterMultiple:{key1:['value1','value2','value3',...etc],key2:'value4',key3:[value5,value6,...etc]}
Here is a fiddle example with implementation of above "filterMutiple" custom filter.
:::Fiddle Example:::
If you want to filter on Array of Objects then you can give
filter:({genres: 'Action', key :value }.
Individual property will be filtered by particular filter given for that property.
But if you wanted to something like filter by individual Property and filter globally for all properties then you can do something like this.
<tr ng-repeat="supp in $data | filter : filterObject | filter : search">
Where "filterObject" is an object for searching an individual property and "Search" will search in every property globally.
~Atul
I've spent some time on it and thanks to #chrismarx, I saw that angular's default filterFilter allows you to pass your own comparator. Here's the edited comparator for multiple values:
function hasCustomToString(obj) {
return angular.isFunction(obj.toString) && obj.toString !== Object.prototype.toString;
}
var comparator = function (actual, expected) {
if (angular.isUndefined(actual)) {
// No substring matching against `undefined`
return false;
}
if ((actual === null) || (expected === null)) {
// No substring matching against `null`; only match against `null`
return actual === expected;
}
// I edited this to check if not array
if ((angular.isObject(expected) && !angular.isArray(expected)) || (angular.isObject(actual) && !hasCustomToString(actual))) {
// Should not compare primitives against objects, unless they have custom `toString` method
return false;
}
// This is where magic happens
actual = angular.lowercase('' + actual);
if (angular.isArray(expected)) {
var match = false;
expected.forEach(function (e) {
e = angular.lowercase('' + e);
if (actual.indexOf(e) !== -1) {
match = true;
}
});
return match;
} else {
expected = angular.lowercase('' + expected);
return actual.indexOf(expected) !== -1;
}
};
And if we want to make a custom filter for DRY:
angular.module('myApp')
.filter('filterWithOr', function ($filter) {
var comparator = function (actual, expected) {
if (angular.isUndefined(actual)) {
// No substring matching against `undefined`
return false;
}
if ((actual === null) || (expected === null)) {
// No substring matching against `null`; only match against `null`
return actual === expected;
}
if ((angular.isObject(expected) && !angular.isArray(expected)) || (angular.isObject(actual) && !hasCustomToString(actual))) {
// Should not compare primitives against objects, unless they have custom `toString` method
return false;
}
console.log('ACTUAL EXPECTED')
console.log(actual)
console.log(expected)
actual = angular.lowercase('' + actual);
if (angular.isArray(expected)) {
var match = false;
expected.forEach(function (e) {
console.log('forEach')
console.log(e)
e = angular.lowercase('' + e);
if (actual.indexOf(e) !== -1) {
match = true;
}
});
return match;
} else {
expected = angular.lowercase('' + expected);
return actual.indexOf(expected) !== -1;
}
};
return function (array, expression) {
return $filter('filter')(array, expression, comparator);
};
});
And then we can use it anywhere we want:
$scope.list=[
{name:'Jack Bauer'},
{name:'Chuck Norris'},
{name:'Superman'},
{name:'Batman'},
{name:'Spiderman'},
{name:'Hulk'}
];
<ul>
<li ng-repeat="item in list | filterWithOr:{name:['Jack','Chuck']}">
{{item.name}}
</li>
</ul>
Finally here's a plunkr.
Note: Expected array should only contain simple objects like String, Number etc.
you can use searchField filter of angular.filter
JS:
$scope.users = [
{ first_name: 'Sharon', last_name: 'Melendez' },
{ first_name: 'Edmundo', last_name: 'Hepler' },
{ first_name: 'Marsha', last_name: 'Letourneau' }
];
HTML:
<input ng-model="search" placeholder="search by full name"/>
<th ng-repeat="user in users | searchField: 'first_name': 'last_name' | filter: search">
{{ user.first_name }} {{ user.last_name }}
</th>
<!-- so now you can search by full name -->
You can also use ngIf if the situation permits:
<div ng-repeat="p in [
{ name: 'Justin' },
{ name: 'Jimi' },
{ name: 'Bob' }
]" ng-if="['Jimi', 'Bob'].indexOf(e.name) > -1">
{{ p.name }} is cool
</div>
The quickest solution that I've found is to use the filterBy filter from angular-filter, for example:
<input type="text" placeholder="Search by name or genre" ng-model="ctrl.search"/>
<ul>
<li ng-repeat="movie in ctrl.movies | filterBy: ['name', 'genre']: ctrl.search">
{{movie.name}} ({{movie.genre}}) - {{movie.rating}}
</li>
</ul>
The upside is that angular-filter is a fairly popular library (~2.6k stars on GitHub) which is still actively developed and maintained, so it should be fine to add it to your project as a dependency.
I believe this is what you're looking for:
<div>{{ (collection | fitler1:args) + (collection | filter2:args) }}</div>
Please try this
var m = angular.module('yourModuleName');
m.filter('advancefilter', ['$filter', function($filter){
return function(data, text){
var textArr = text.split(' ');
angular.forEach(textArr, function(test){
if(test){
data = $filter('filter')(data, test);
}
});
return data;
}
}]);
Lets assume you have two array, one for movie and one for genre
Just use the filter as: filter:{genres: genres.type}
Here genres being the array and type has value for genre
I wrote this for strings AND functionality (I know it's not the question but I searched for it and got here), maybe it can be expanded.
String.prototype.contains = function(str) {
return this.indexOf(str) != -1;
};
String.prototype.containsAll = function(strArray) {
for (var i = 0; i < strArray.length; i++) {
if (!this.contains(strArray[i])) {
return false;
}
}
return true;
}
app.filter('filterMultiple', function() {
return function(items, filterDict) {
return items.filter(function(item) {
for (filterKey in filterDict) {
if (filterDict[filterKey] instanceof Array) {
if (!item[filterKey].containsAll(filterDict[filterKey])) {
return false;
}
} else {
if (!item[filterKey].contains(filterDict[filterKey])) {
return false;
}
}
}
return true;
});
};
});
Usage:
<li ng-repeat="x in array | filterMultiple:{key1: value1, key2:[value21, value22]}">{{x.name}}</li>
Angular Or Filter Module
$filter('orFilter')([{..}, {..} ...], {arg1, arg2, ...}, false)
here is the link: https://github.com/webyonet/angular-or-filter
I had similar situation. Writing custom filter worked for me. Hope this helps!
JS:
App.filter('searchMovies', function() {
return function (items, letter) {
var resulsts = [];
var itemMatch = new RegExp(letter, 'i');
for (var i = 0; i < items.length; i++) {
var item = items[i];
if ( itemMatch.test(item.name) || itemMatch.test(item.genre)) {
results.push(item);
}
}
return results;
};
});
HTML:
<div ng-controller="MoviesCtrl">
<ul>
<li ng-repeat="movie in movies | searchMovies:filterByGenres">
{{ movie.name }} {{ movie.genre }}
</li>
</ul>
</div>
Here is my example how create filter and directive for table jsfiddle
directive get list (datas) and create table with filters
<div ng-app="autoDrops" ng-controller="HomeController">
<div class="row">
<div class="col-md-12">
<h1>{{title}}</h1>
<ng-Multiselect array-List="datas"></ng-Multiselect>
</div>
</div>
</div>
my pleasure if i help you
Too late to join the party but may be it can help someone:
We can do it in two step, first filter by first property and then concatenate by second filter:
$scope.filterd = $filter('filter')($scope.empList, { dept: "account" });
$scope.filterd = $scope.filterd.concat($filter('filter')($scope.empList, { dept: "sales" }));
See the working fiddle with multiple property filter
OPTION 1:
Using Angular providered filter comparator parameter
// declaring a comparator method
$scope.filterBy = function(actual, expected) {
return _.contains(expected, actual); // uses underscore library contains method
};
var employees = [{name: 'a'}, {name: 'b'}, {name: 'c'}, {name: 'd'}];
// filter employees with name matching with either 'a' or 'c'
var filteredEmployees = $filter('filter')(employees, {name: ['a','c']}, $scope.filterBy);
OPTION 2:
Using Angular providered filter negation
var employees = [{name: 'a'}, {name: 'b'}, {name: 'c'}, {name: 'd'}];
// filter employees with name matching with either 'a' or 'c'
var filteredEmployees = $filter('filter')($filter('filter')(employees, {name: '!d'}), {name: '!b'});
My solution
ng-repeat="movie in movies | filter: {'Action'} + filter: {'Comedy}"
the best answer is :
filter:({genres: 'Action', genres: 'Comedy'}

Angular filter match by character?

I have angular 1.3, and i have the following array:
data : [
{
id :2,
name : "danny davids",
age :9
},
{
id :3,
name : "sanny gordon",
age :9
}
]
I want the filter to do the follwing:
When i start writing the word "s", i want the danny davids to disappear, right now the default behavior is, both of them are still shown (the s is in the end of the last name of danny).
strict mode is something that i dont want to use, the behavior i want is:
if there is no value in the input, i want to see all, if i start to write i want to see the exact one by firstName/lastName.
is there a default filter for this in angular 1.3?
You can filter match by any characters:
Sample condition:
yourDataList.display.toLowerCase().indexOf(searchData) !== -1;
Example:
function createFilterForAnycharacters(searchData) {
var lowercaseQuery = query.toLowerCase();
return function filterFn(yourDataList) {
return (yourDataList.display.toLowerCase().indexOf(searchData) !== -1);
};
}
I suggest using $filter by a custom filter function for you ng-repeat. According to the documentation, $filter expects
function(value, index, array): A predicate function can be used to write arbitrary filters. The function is called for each element of the array, with the element, its index, and the entire array itself as arguments.
And only elements that return true with be shown. So all you have to do is write that function.
Your filter function might look like this:
$scope.filterData = function (obj) {
return anyNameStartsWith(obj.name, $scope.searchFilter);
};
function anyNameStartsWith (fullname, search) {
//validate if name is null or not a string if needed
if (search === '')
return true;
var delimeterRegex = /[ _-]+/;
//split the fullname into individual names
var names = fullname.split(delimeterRegex);
//do any of the names in the array start with the search string
return names.some(function(name) {
return name.toLowerCase().indexOf(search.toLowerCase()) === 0;
});
}
Your HTML might look something like this:
<input type="text" ng-model="searchFilter" />
<div ng-repeat="obj in data | filter : filterData">
Id: {{obj.id}}
Name: {{obj.name}}
</div>
A demo via plnkr
Use this custom filter to get result match starting characters
app.filter('startsWithLetter', function () {
return function (items, letter) {
var filtered = [];
for (var i = 0; i < items.length; i++) {
var item = items[i];
if (item.substr(0,letter.length).toLowerCase() == letter.toLowerCase()) {
filtered.push(item);
}
}
return filtered;
};
});
it works for your scenario, you can create custom filter
below is html code
<div ng-app="app">
<div ng-controller="PersonCtrl as person">
<input type="text" ng-model="letter" placeholder="Enter a letter to filter">
<ul>
<li ng-repeat="a in person.data | startsWithLetter:letter">
{{a.name}}
</li>
</ul>
</div>
</div>
js code
var app = angular.module('app', []);
app.filter('startsWithLetter', function () {
return function (items, letter) {
var filtered = [];
var letterMatch = new RegExp(letter, 'i');
for (var i = 0; i < items.length; i++) {
var item = items[i];
if (letterMatch.test(item.name.substring(0, 1))) {
filtered.push(item);
}
}
return filtered;
};
});
app.controller('PersonCtrl', function () {
this.data = [
{
id :2,
name : "danny davids",
age :9
},
{
id :3,
name : "sanny gordon",
age :9
}
]
});
Need to create a custom filter function to do this. There is no default method to match first character in angular.
https://docs.angularjs.org/guide/filter

Angularjs "this" is undefined in normal object

I am creating a quiz in angular and i use this code:
<ul>
<li ng-repeat="choice in choices" class="choices" ng-click="setSelection(choice)">{{choice}}</li>
</ul>
var choiceSelection = {
isSelected: false,
userAnswers: [],
setSelection: function(choice) {
this.userAnswers.push(choice);
console.log(this.userAnswers);
}
};
$scope.setSelection = choiceSelection.setSelection;
I want to store the users choice in the userAnswers array, but the this in setSelection is undefined and therefore this.userAnswers nor this.isSelected works. This code works in normal JS, I just tested it.
What's going on here?
You could bind the proper value for this to your setSelection function:
var choiceSelection = new function ( ) {
this.isSelected = false;
this.userAnswers = [];
this.setSelection = function(choice) {
this.userAnswers.push(choice);
console.log(this.userAnswers);
}.bind( this );
} ;
$scope.setSelection = choiceSelection.setSelection;

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