I am new to angularjs and is using code sample in book "pro-angularjs" to do some test run (it has an initial list of items, but then use Ajax to update list):
<!DOCTYPE html>
<html ng-app="todoApp">
<head>
<title>TO DO List</title>
<link href="bootstrap.css" rel="stylesheet" />
<link href="bootstrap-theme.css" rel="stylesheet" />
<script src="angular.js"></script>
<script>
var model = {
user: "Adam",
items: [{ action: "Buy Flowers", done: false },
{ action: "Get Shoes", done: false },
{ action: "Collect Tickets", done: true },
{ action: "Call Joe", done: false }],
};
var todoApp = angular.module("todoApp", []);
todoApp.run(function ($http) {
$http.get("todo.json").then(function successCallback(data) {
model.items = data;
});
});
todoApp.filter("checkedItems", function () {
return function (items, showComplete) {
var resultArr = [];
angular.forEach(items, function (item) {
if (item.done == false || showComplete == true) {
resultArr.push(item);
}
});
return resultArr;
}
});
todoApp.controller("ToDoCtrl", function ($scope) {
$scope.todo = model;
$scope.incompleteCount = function () {
var count = 0;
angular.forEach($scope.todo.items, function (item) {
if (!item.done) { count++ }
});
return count;
}
$scope.warningLevel = function () {
return $scope.incompleteCount() < 3 ? "label-success" : "label-warning";
}
$scope.addNewItem = function (actionText) {
$scope.todo.items.push({ action: actionText, done: false });
}
});
</script>
</head>
<body ng-controller="ToDoCtrl">
<div class="page-header">
<h1>
{{todo.user}}'s To Do List
<span class="label label-default" ng-class="warningLevel()"
ng-hide="incompleteCount() == 0">
{{incompleteCount()}}
</span>
</h1>
</div>
<div class="panel">
<div class="input-group">
<input class="form-control" ng-model="actionText" />
<span class="input-group-btn">
<button class="btn btn-default"
ng-click="addNewItem(actionText)">Add</button>
</span>
</div>
<table class="table table-striped">
<thead>
<tr>
<th>Description</th>
<th>Done</th>
</tr>
</thead>
<tbody>
<tr ng-repeat=
"item in todo.items | checkedItems:showComplete | orderBy:'action'">
<td>{{item.action}}</td>
<td><input type="checkbox" ng-model="item.done" /></td>
</tr>
</tbody>
</table>
<div class="checkbox-inline">
<label><input type="checkbox" ng_model="showComplete"> Show Complete</label>
</div>
</div>
</body>
</html>
the only change i made was:
todoApp.run(function ($http) {
$http.get("todo.json").then(function successCallback(data) {
model.items = data;
});
});
it was initially:
$http.get("todo.json").success(function (data) {
model.items = data;
});
which does not run with the latetest version angularjs, and so i made the change.
when debugging, i found that the initial value of model.items is:
and it is correctly showing in UI (see left side of screenshot).
After the ajax, its value is updated to 'data' whose value is:
the value of data looks fine to me (same as initial value of items).
But after i let go the debugger, finally in UI all items are gone.
I do understand why? it seems 'items' is the same as 'data'. Anyone has a clue on how i can debug further to find out the root cause?
Thanks,
btw, the 'todo.json' i used is below:
[{ "action": "Buy Flowers", "done": false },
{ "action": "Get Shoes", "done": false },
{ "action": "Collect Tickets", "done": true },
{ "action": "Call Joe", "done": false }]
You are not updating your model correctly. As you can see from your screenshot, data contains an object data which should be assigned to your model.
todoApp.run(function ($http) {
$http.get("todo.json").then(function successCallback(data) {
model.items = data.data;
});
});
Related
Is it possible to show/hide an element after a function call that returns a boolean? Scenario is, to show "Ready" when all n-items have an "agreed" flag. If not, show something else. Value of agreed flag is changed with a radio button.
$scope.data = [
{
title: "Agreement #1",
agreed: false,
},
{
title: "Agreement #2",
agreed: false,
},
];
$scope.ready = function()
{
var go = true;
angular.forEach($scope.data, function(item, key) {
go &= item.agreed==true;
});
return go;
}
Then, calling:
<div ng-show="ready()">Go!</div>
<div ng-hide="ready()">Missing the points.</div>
Problem with this code: If all radio buttons are checked, ie. all values of agreed flag are set to true, the ready() is not auto updated.
You can bind the boolean value of agreed to the ng-model of the radio button and use ng-value for setting true/false for each agreement.
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.data = [
{
title: "Agreement #1",
agreed: false,
},
{
title: "Agreement #2",
agreed: false,
}
]
$scope.ready = function()
{
var go = true;
angular.forEach($scope.data, function(item, key) {
go &= item.agreed==true;
});
return go;
}
});
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<div ng-show="ready()">Go!</div>
<div ng-show="!ready()">Missing the points.</div>
<table>
<tr>
<th>Agreement </th>
<th>Status</th>
</tr>
<tr ng-repeat="value in data">
<td>{{value.title}}</td>
<td>
Yes <input type="radio" ng-model="value.agreed" ng-value="true" />
No <input type="radio" ng-model="value.agreed" ng-value="false" />
</td>
</tr>
</table>
<span>{{data}}</span>
</div>
</body>
</html>
i think u missed the data variable square bracket
$scope.data = [
{
title: "Agreement #1",
agreed: true,
},
{
title: "Agreement #2",
agreed: false,
},
];
https://plnkr.co/edit/xWdro1SCUTeLbRVbEMWi?p=preview
here is the fiddle to my problem http://jsfiddle.net/gxbwk6dk/7/
I have one service to find the element of a json ,
and I am calling that service from the controller twice but the results i am getting from both calls are the same.
in the example elementObj1 and elementObj2 has the same data
Any solution will be welcome.
var app=angular.module("myapp",[]);
app.controller("myctrl",function($scope,myservice)
{
console.log("add of two "+myservice.addTwo(5,7));
$scope.sum=myservice.addTwo(5,7);
$scope.sampleObj={
"glossary": {
"title": "example glossary",
"GlossDiv": {
"title": "S",
"GlossList": {
"GlossEntry": {
"ID": "SGML",
"SortAs": "SGML",
"GlossTerm": "Standard Generalized Markup Language",
"Acronym": "SGML",
"Abbrev": "ISO 8879:1986",
"GlossDef": {
"para": "A meta-markup language, used to create markup languages such as DocBook.",
"GlossSeeAlso": ["GML", "XML"]
},
"GlossSee": "markup"
}
}
}
}
};
myservice.findElement($scope.sampleObj,'GlossEntry').then(function(data){
$scope.elementObj1=data;
console.log("find element object1 ", $scope.elementObj1);
});
myservice.findElement($scope.sampleObj,'GlossList').then(function(data){
$scope.elementObj2=data;
console.log("find element object2 ", $scope.elementObj2);
});
}
);
app.factory("myservice",function($q,$timeout){
var deferred = $q.defer();
return{
addTwo:addTwo,
findElement:findEle,
sample:sample
};
function sample(jsObject)
{
var deferred = $q.defer();
$timeout(function(){deferred.resolve(jsObject)},5000);
return deferred.promise;
}
function addTwo(a,b)
{
return a+b;
}
function findEle(jsObject,searchEle)
{
for(obj in jsObject)
{
console.log("obj "+obj+" mapobj "+jsObject[obj]);
if(obj===searchEle)
{
console.log("element found "+obj);
deferred.resolve(jsObject[obj]);
}
if(typeof jsObject[obj]==="object")
findEle(jsObject[obj],searchEle);
}
return deferred.promise;
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="myapp" ng-controller="myctrl">
<input type="text" ng-model="name" />
<h2 ng-bind="name"></h2>
display object 1
<table>
<tr ng-repeat="(key, value) in elementObj1">
<td> {{key}} </td> <td> {{ value }} </td>
</tr>
</table>
display object 2
<table>
<tr ng-repeat="(key, value) in elementObj2">
<td> {{key}} </td> <td> {{ value }} </td>
</tr>
</table>
</body>
Here are one working solution: http://jsfiddle.net/gxbwk6dk/9/
You are returning same object, I have modified when you have a hit:
if (obj === searchEle) {
deferred = $q.defer();
deferred.resolve(jsObject[obj]);
}
Is there a way to detect whether or not ngTable currently has a sort applied? Binding to the sorting table parameter does not work correctly.
<!--- Never shows---->
<label ng-if="tableParams.$params.sorting === {}">No sort applied</label>
<!--- Never shows---->
<label ng-if="tableParams.$params.sorting() === {}">No sort applied</label>
Oddly enough this simple binding example works as expected:
<label>settings={{ tableParams.$params.sorting }}</label>
When a sort is applied a value of: {"sortColumn":"sortDirection"} appears:
{"Id":"desc"}
or if a sort is not applied:
{}
Any help would be appreciated.
You can do something like this:
var app = angular.module('app', []);
app.controller('myController', function($scope) {
$scope.angular = angular;
$scope.tableParams = {
$params: {
sorting: {}
}
};
$scope.sort = function() {
$scope.tableParams.$params.sorting[1] = true;
};
$scope.unsort = function() {
delete $scope.tableParams.$params.sorting[1];
};
$scope.isSorted = function(tableParams) {
return !angular.equals({}, tableParams.$params.sorting);
};
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
<div ng-app="app">
<div ng-controller="myController">
<div ng-show="!isSorted(tableParams)">No sort applied</div>
<button ng-click=sort()>sort</button>
<button ng-click=unsort()>unsort</button>
<br>{{ tableParams }}
</div>
</div>
You can also make the angular object accessible in templates by making it available to the scope.
var app = angular.module('app', []);
app.controller('myController', function($scope) {
$scope.angular = angular;
$scope.tableParams = {
$params: {
sorting: {}
}
};
$scope.sort = function() {
$scope.tableParams.$params.sorting[1] = true;
};
$scope.unsort = function() {
delete $scope.tableParams.$params.sorting[1];
};
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
<div ng-app="app">
<div ng-controller="myController">
<div ng-show="angular.equals({}, tableParams.$params.sorting)">No sort applied</div>
<div>
<button ng-click=sort()>sort</button>
<button ng-click=unsort()>unsort</button>
</div>
<div><br>{{ tableParams }}</div>
</div>
</div>
var app = angular.module('app', []);
app.controller('myController', function($scope) {
$scope.angular = angular;
$scope.tableParams = {
$params: {
sorting: {}
}
};
$scope.sort = function() {
$scope.tableParams.$params.sorting[1] = true;
};
$scope.unsort = function() {
delete $scope.tableParams.$params.sorting[1];
};
$scope.strictlyEqualsEmptyObject = function(obj) {
return {} === obj;
};
$scope.equalsEmptyObject = function(obj) {
return {} == obj;
};
$scope.angularEqualsEmptyObject = function(obj) {
return angular.equals({}, obj);
};
$scope.objectKeysLength = function(obj) {
return Object.keys(obj).length === 0;
};
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
<div ng-app="app">
<div ng-controller="myController">
<div>{{ tableParams }}</div>
<div>
<button ng-click=sort()>sort</button>
<button ng-click=unsort()>unsort</button>
</div>
<table>
<th>Not sorted check using:</th>
<tr>
<td>strict </td>
<td>{{ strictlyEqualsEmptyObject(tableParams.$params.sorting) }}</td>
</tr>
<tr>
<td>equals </td>
<td>{{ equalsEmptyObject(tableParams.$params.sorting) }}</td>
</tr>
<tr>
<td>angular </td>
<td>{{ angularEqualsEmptyObject(tableParams.$params.sorting) }}</td>
</tr>
<tr>
<td>Object.keys </td>
<td>{{ objectKeysLength(tableParams.$params.sorting) }}</td>
</tr>
</table>
</div>
</div>
I have a textbox with autocomplete capability and after clicking on click me button the text in autocomplete is added as in the table , here is the link that works perfectly fine,
var app = angular.module('app', []);
app.factory('Service', function() {
var typesHash = [ {
id :1,
name : 'lemon',
price : 100,
unit : 2.5
}, {
id : 2,
name : 'meat',
price : 200,
unit : 3.3
} ];
var localId = 3;
availableTags = [
"ActionScript",
"AppleScript",
"Asp",
"BASIC",
"C",
"C++",
"Clojure",
"COBOL",
"ColdFusion",
"Erlang",
"Fortran",
"Groovy",
"Haskell",
"Java",
"JavaScript",
"Lisp",
"Perl",
"PHP",
"Python",
"Ruby",
"Scala",
"Scheme"
];
var service = {
addTable : addTable,
getData : getData,
complete:complete
};
return service;
function complete($scope){
$( "#txt" ).autocomplete({
source: availableTags,
messages: {
noResults: '',
results: function() {}
}
});
$("#txt" ).on( "autocompleteselect", function( event, ui ) {
$scope.tableTools.inputData=ui.item.value;
} );
}
function addTable(name,price) {
typesHash.push({id:localId++, name:name, price:price,unit:1});
}
function getData() {
return typesHash;
}
});
app.controller('table', function(Service,$scope) {
//get the return data from getData funtion in factory
this.typesHash = Service.getData();
//get the addtable function from factory
this.addTable = Service.addTable;
this.complete=Service.complete($scope);
});
working link
but as soon as I put ng-controller="table as tableTools" in the div instead of body then autocompleting of text box start acting funny and it does not work properly
not working link
can anyone explain the reason and tell me how I can fix it in a way that even by putting ng-controller="table as tableTools" inside div it works?
Update:
here is the error:
Uncaught TypeError: Cannot set property 'inputData' of undefined
for this line:
$scope.tableTools.inputData = ui.item.value;
(remember the problem starts after you click on suggested text)
The issue is hidden in missunderstanding of the angularjs object life-cycles.
The most important here to know is:
services (factory/provider ... different creation, but at the end the same) are singletons
controllers are instantiated per each view. (There are many, multi instances of one controller through the angular app life time..)
So what happened?
There is one service:
app.factory('Service', function() {
...
and there is one controller passing its scope into that service
app.controller('table', function(Service,$scope) {
...
this.complete=Service.complete($scope);
And on the page we can see:
// first usage of controller
// its first instance is created, $scope is passed
<div class="row commonRow" ng-controller="table as tableTools">
// second usage
// different instance is created... and it also passes the §scope
<tbody ng-controller="table as iterateTb">
But as described above - service is only one. While first controller passes its $scope, the second does after while as well.. and that is causing the issue.
We can use services inside of controllers. That is the design principle of angular. But we should not pass the $scope...
This is happening because you have two controller on the same page with two differenct element therefore scope is not binding properly.
The best code for you to do this is :-
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
<link data-require="bootstrap#*" data-semver="3.3.1" rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" />
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.26/angular.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.2/themes/smoothness/jquery-ui.css">
<title>Insert title here</title>
<script>
var app = angular.module('app', []);
app.factory('Service', function() {
var typesHash = [ {
id :1,
name : 'lemon',
price : 100,
unit : 2.5
}, {
id : 2,
name : 'meat',
price : 200,
unit : 3.3
} ];
var localId = 3;
availableTags = [
"ActionScript",
"AppleScript",
"Asp",
"BASIC",
"C",
"C++",
"Clojure",
"COBOL",
"ColdFusion",
"Erlang",
"Fortran",
"Groovy",
"Haskell",
"Java",
"JavaScript",
"Lisp",
"Perl",
"PHP",
"Python",
"Ruby",
"Scala",
"Scheme"
];
var service = {
addTable : addTable,
getData : getData,
complete:complete
};
return service;
function complete($scope){
$( "#txt" ).autocomplete({
source: availableTags,
messages: {
noResults: '',
results: function() {}
}
});
$("#txt" ).on( "autocompleteselect", function( event, ui ) {
console.log($scope);
$scope.tableTools.inputData=ui.item.value;
} );
}
function addTable(name,price) {
typesHash.push({id:localId++, name:name, price:price,unit:1});
}
function getData() {
return typesHash;
}
});
app.controller('table', function(Service,$scope) {
//get the return data from getData funtion in factory
this.typesHash = Service.getData();
//get the addtable function from factory
this.addTable = Service.addTable;
this.complete=Service.complete($scope);
});
</script>
</head>
<body ng-app="app" ng-controller="table as tableTools" >
<form >
<div class="row commonRow" >
<div class="col-xs-1 text-right">
item:
</div>
<div class="col-xs-5">
<input id="txt" type="text" style="width: 100%;" ng-keyup="tableTools.complete()" ng-model="tableTools.inputData">
</div>
<div class="col-xs-2">
<button class="btn btn-primary" ng-click="tableTools.addTable(tableTools.inputData);tableTools.inputData=''">
click me
</button>
</div>
</div>
</form>
<div class="row commonRow">
<div class="col-xs-1"></div>
<div class="col-xs-10">
<table class="table table-hover">
<thead>
<tr>
<th>item</th>
</tr>
</thead>
<tbody> <!--No need for controller here-->
<tr ng-repeat="x in tableTools.typesHash track by x.id">
<td>
<div>{{x.name}}</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</body>
</html>
Plunker
If you add
$scope.tableTools={}
right below
function complete($scope){
the second one works as expected.
can anyone explain the reason
As long as the object ‘$scope.tableTools‘ has not been defined, you cannot successfully add attributes to it
I have the following code :
http://plnkr.co/edit/RqLurBaCsgjQjOYMtl8r?p=preview
here there is a textbox and when user add something to the textbox and push add button then the entered text should be added to the table Here is my javaScript code:
var app = angular.module('app', []);
app.factory('Service', function() {
var typesHash = [ {
id : '1',
name : 'lemon',
price : 100,
unit : 2.5
}, {
id : '2',
name : 'meat',
price : 200,
unit : 3.3
} ];
var service = {
addTable : addTable,
getData : getData,
};
return service;
function addTable(data) {
typesHash.push(data);
}
function getData() {
return typesHash;
}
});
app.controller('table', function(Service) {
//get the return data from getData funtion in factory
this.typesHash = Service.getData();
this.testData = {
id : '1',
name : "test",
price : 100,
unit : 2.5
};
//get the addtable function from factory
this.addTable = Service.addTable;
});
here as far as testData is static as follow it works:
this.testData = {
id : '1',
name : "test",
price : 100,
unit : 2.5
};
but here the text in the textbox is not added so I changed the above code as follow:
this.testData = {
id : '1',
name : $("#txt").val(),
price : 100,
unit : 2.5
};
the name gets nothing and row is added but name spot is empty?
Just a quick note that this is a simpler version of my real code and I have a reason to use factory.
Can ahyone help me to find out why this table does not connect to textbox correctly?
Modified version of the plnkr (ooo nice design changes SO).
Updated pasted a bad plnkr link before.
http://plnkr.co/edit/4g7LGRLBNEH2LeuEm1qN?p=preview
code from the post, let me know if this doesn't cover some scenario you were imagining. I tried getting rid of all the style cruft, that should be done in CSS or using things like text-right or text-center provided by bootstrap.
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<link data-require="bootstrap#*" data-semver="3.3.1" rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" />
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.26/angular.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<title>Insert title here</title>
<script>
var app = angular.module('app', []);
app.factory('Service', function() {
var typesHash = [ {
id :1,
name : 'lemon',
price : 100,
unit : 2.5
}, {
id : 2,
name : 'meat',
price : 200,
unit : 3.3
} ];
var localId = 3;
var service = {
addTable : addTable,
getData : getData,
};
return service;
function addTable(name) {
typesHash.push({id:localId++, name:name, price:100,unit:1});
}
function getData() {
return typesHash;
}
});
app.controller('table', function(Service) {
//get the return data from getData funtion in factory
this.typesHash = Service.getData();
//get the addtable function from factory
this.addTable = Service.addTable;
});
</script>
</head>
<body ng-app="app" ng-controller="table as tableTools">
<form>
<div class="row commonRow">
<div class="col-xs-1 text-right">
item:
</div>
<div class="col-xs-5">
<input id="txt" type="text" style="width: 100%;" ng-model="tableTools.inputData" />
</div>
<div class="col-xs-2">
<button class="btn btn-primary" ng-click="tableTools.addTable(tableTools.inputData);tableTools.inputData=''">
click me
</button>
</div>
</div>
</form>
<div class="row commonRow">
<div class="col-xs-1"></div>
<div class="col-xs-10">
<table class="table table-hover">
<thead>
<tr>
<th>item</th>
</tr>
</thead>
<tbody ng-controller="table as iterateTb">
<tr ng-repeat="x in iterateTb.typesHash track by x.id">
<td>
<div>{{x.name}}</div>
</td>
<td>
<input type="text" ng-model="x.name"/>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</body>
</html>
here is the updated plunker :-
http://plnkr.co/edit/uDIEAjRtpM7MnQu72LAA?p=preview
I just added data.name=$("#txt").val(); before pushing the data into array.
function addTable(data) {
data.name=$("#txt").val();
typesHash.push(data);
}
Hope it helps :-)