ng-repeat is showing data that is not there - javascript

I am using data load dynamically through a function and then populate using ng-repeat.
Below is the controller code.
$scope.loadproducts = function(item_id) {
var pdata = $.param({
item_id : item_id,
});
$http({
method: 'POST',
url: baseurl + 'api/get_items_in_category_cart',
data: pdata,
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
}).then(function successCallback(response) {
$scope.items = response.data.products;
$scope.description = response.data.description;
console.log($scope.items);
$timeout(apply_tooltip, 500);
}, function errorCallback(response) {
});
};
View
<div class="container col-md-6" ng-repeat="item in items">
<div class="panel panel-primary">
<div class="panel-heading">
<h4 class="panel-title">{{ item.title }}</h4>
</div>
<div class="panel-body">
<div class="col-md-3 col-xs-5"><img ng-src="{{ item.thumbnail }}"></div>
<div class="col-md-9" style="">
<div class="row">
<div class="col-md-12">
<span style="font-size: 14px; font-weight: 500;">{{ item.description }}</p>
</div>
</div>
<div class="row">
<div class="col-md-4 text-right" style=" text-align: left;">
<p>{{item.price | currency:"NZ $"}}</p>
</div>
<div class="col-md-8" style=" text-align: left;">
<input type="text" value="{{item.qty}}" style="width:50px; height: 28px; line-height: 28px;" readonly id="qty_{{item.id}}"/>
</div>
</div>
</div>
</div>
</div>
</div>
Upon initial page load the the code does what it is supposed to do.
There is a proceed button where the user gets taken to another page.
If the user goes back, the items are supposed to reload again.
The issue is during the reload the text box that is supposed to show the quantity for each item ->> value="{{item.qty}}" seems to show the same qty for all qty text boxes regardless of the original qty they had.
The console.log($scope.items) shows the proper value that it is supposed to have. It's just the display that is showing the wrong qty.
Any idea guys?

If your data is loaded correctly, you can go in two ways:
1 - Try to use a ng-model in your input
<input type="text" ng-model="item.qty" style="width:50px; height: 28px; line-height: 28px;" readonly id="qty_{{item.id}}"/>
You can either remove the 'readonly' property and add a ng-disabled="true".
2 - You can try to clear your list before you get the new values. So, before you load again your values from back-end you could just clear your data:
$scope.items = [];
And put the data again when the request is completed.
Note that this second solution it isn't conventional, and should be used in case that you can't find out another solution.

Related

Filter users by data-attribute Jquery

I am trying to filter users by its data attribute , I have main div called user-append which contains users that I get from ajax get request , there can be 3 users or 100 users, its dynamical , this is my div with one user for the moment
<div id="user-append">
<div class="fc-event draggable-user" data-profesion="'+user.profesion+'" id="user_'+user.id+'" style="z-index: 9999;">
<div class="container-fluid">
<input type="hidden" value="'+user.id+'" id="user_'+ user.id + '_value" class="userId">
<div class="row" style="justify-content: center;">
<div class="col-xs-3 avatar-col">
<div class="innerAvatarUserLeft">
<img src="'+getUserImage(user.avatar)+'" width="100%" style="margin: 0 auto;">
</div>
</div>
<div class="col-xs-9 data-col">
<p class="fullName dataText">'+user.fullName+'</p>
<p class="usr_Gender dataText">Male</p>
<div style="position: relative">
<li class="availableUnavailable"></li>
<li class="usr_profesion dataText">AVAILABLE</li>
</div>
<p class="user_id" style="float:right;margin: 3px">'+user.employee_id+'</p>
</div>
</div>
</div>
</div>
</div>
as you can see I have data-profesion attribute from which I am trying to filter users depend on the profession that they have , I get the ajax request like this
$.ajax({
url: "/rest/users",
success: function (users) {
var options = [];
$user = $("#append_users");
$.each(users, function (i, user) {
options.push({
'profession': user.prof.Profession,
'gender': user.prof.Gender
});
userArr.push({
'id': user.id,
'firstName': user.prof.FirstName,
'lastName': user.prof.LastName,
'fullName': user.prof.FirstName + ' ' + user.profile.LastName,
'email': user.email,
'avatar': user.prof.Photo,
'profesion': user.prof.Profession
});
$('#filterByProfession').html('');
$('#filterByGender').html(''); // FIRST CLEAR IT
$.each(options, function (k, v) {
if (v.profession !== null) {
$('#filterByProfession').append('<option>' + v.profession + '</option>');
}
if (v.gender !== null) {
$('#filterByGender').append('<option>' + v.gender + '</option>');
}
});
});
});
and now I am trying to filter the users by its data-profesion, on change of my select option which I populate from the ajax get request , It should show only the users that contain that data-profesion value , something like this
$('#filterByProfession').change(function () {
var filterVal = $(this).val();
var userProfVal = $(".fc-event").attr("data-profesion");
if (filterVal !== userProfVal) {
}
});
You can use a CSS selector to find those users, and then hide them:
$('#filterByProfession').change(function () {
// first hide ALL users
$('.draggable-user').hide()
// then filter out the ones with the correct profession:
// (you need to escape the used quote)
.filter('[data-profesion="' + $(this).val().replace(/"/g, '\\"') + '"]')
// ... and show those
.show();
});
You're trying to get the userProfVal throughout a className selector which can return more than one element.
var userProfVal = $(".fc-event").attr("data-profesion");
^
Use the jQuery function .data() to get data attributes.
Look at this code snippet using the .each to loop over all elements returned by this selector .fc-event:
$('#filterByProfession').change(function() {
var filterVal = $(this).val();
$(".fc-event").hide().each(function() {
if ($(this).data("profesion") === filterVal) {
$(this).show();
}
});
});
Example with static data
$('#filterByProfession').change(function() {
var filterVal = $(this).val();
$(".fc-event").hide().each(function() {
if ($(this).data("profesion") === filterVal) {
$(this).show();
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select id='filterByProfession'>
<option>-----</option>
<option>Developer</option>
<option>Cloud computing</option>
</select>
<div id="user-append">
<div class="fc-event draggable-user" data-profesion="Developer" id="user_1" style="z-index: 9999;">
<div class="container-fluid">
<input type="hidden" value="1" id="user_1_value" class="userId">
<div class="row" style="justify-content: center;">
<div class="col-xs-3 avatar-col">
<div class="innerAvatarUserLeft">
<img src="'+getUserImage(user.avatar)+'" style="margin: 0 auto;">
</div>
</div>
<div class="col-xs-9 data-col">
Developer
<p class="fullName dataText">Ele</p>
<p class="usr_Gender dataText">Male</p>
<div style="position: relative">
<li class="availableUnavailable"></li>
<li class="usr_profesion dataText">AVAILABLE</li>
</div>
<p class="user_id" style="float:right;margin: 3px">11</p>
</div>
</div>
</div>
</div>
</div>
<div id="user-append">
<div class="fc-event draggable-user" data-profesion="Cloud computing" id="user_2" style="z-index: 9999;">
<div class="container-fluid">
<input type="hidden" value="2" id="user_2_value" class="userId">
<div class="row" style="justify-content: center;">
<div class="col-xs-3 avatar-col">
<div class="innerAvatarUserLeft">
<img src="'+getUserImage(user.avatar)+'" style="margin: 0 auto;">
</div>
</div>
<div class="col-xs-9 data-col">
Cloud computing
<p class="fullName dataText">Enri</p>
<p class="usr_Gender dataText">Male</p>
<div style="position: relative">
<li class="availableUnavailable"></li>
<li class="usr_profesion dataText">AVAILABLE</li>
</div>
<p class="user_id" style="float:right;margin: 3px">11</p>
</div>
</div>
</div>
</div>
</div>
See? the sections are being hidden according to the selected option.
Try using this
$(".fc-event[data-profesion='" + filterVal + "']").show();
$(".fc-event[data-profesion!='" + filterVal + "']").hide();

Knockout why does my first form.submit work but not the others?

I have three views which posts a JSON-object to backend to generate a PDF. The first in the hierarchy works, not the two others. The code is practically identical, and uses the same method to programmatically add a hidden input-field with the JSON-data.
I cannot for the life of me figure out what the problem is.
First i thought Knockout was creating the problem since the form-elements are added in a foreach-loop, in a AJAX-success-event, but every view is identical in this respect.
I've tried all variations of renaming, also I've tried to create the form and input programatically, appending them to the body and submitting. Still only the first works.
WORKING VIEW:
<div data-bind="visible: rep.messages().length > 0">
<div data-bind="foreach: rep.messages">
<div id="error" data-bind="css: color">
<div><span data-bind="css: icon"></span></div>
<div><div data-bind="html: text"></div></div>
<div>
<form action="/createPDF.html" method="POST" id="individlonpdf" name="loneandringar" target="_blank">
<span onclick=""></span>
Skriv ut
</form>
</div>
</div>
</div>
</div>
NOT WORKING VIEW:
<div data-bind="visible: rem.newEmployeeMessages().length > 0" id="rem-msg-area">
<div data-bind="foreach: rem.newEmployeeMessages">
<div id="error" data-bind="css: color">
<div><span data-bind="css: icon"></span></div>
<div><div data-bind="html: text"></div></div>
<div>
<form action="/createPDF.html" method="POST" id="ateranstallpdf" name="avanmalan" target="_blank">
<span onclick=""></span>
Skriv ut
</form>
</div>
</div>
</div>
</div>
JAVASCRIPT
Each click event-method is then directed towards the same print-method
Not-working:
rem.print = function(){
mainPdfPrint("ateranstallpdf", data, "avanmalan");
}
Working:
rep.print = function () {
mainPdfPrint("individlonpdf", data, "loneandringar");
}
The main-method:
function mainPdfPrint(formid, datasource, name, stringified) {
formid = "#" + formid;
var url = $(formid).attr("action");
var data = stringified ? datasource : JSON.stringify(datasource);
var inp = $("<input>", { "value": data, "name": name, "type": "hidden" });
if ($(formid + " input:hidden").length) {
$(formid + " input:hidden").remove();
}
$(formid).append(inp);
IK.global.logAnalytics(url);
document.forms[name].submit();
}
Both working and non-working form-elements are part of the document.forms-collection as they should be.
Any suggestions would be greatly appreciated!
UPDATE
After suggestions here, I've tried a different approach:
<div class="col-xs-12" id="" data-bind="visible:messages().length > 0">
<div data-bind="foreach: messages">
<div class="col-xs-12" id="error" data-bind="css:color">
<div class="col-xs-12 msg-templates">
<div class="col-xs-1 no-pad-l info-sign">
<span class="glyphicon" data-bind="css:icon"></span>
</div>
<div class="col-xs-9 no-pad-l">
<div class="col-xs-12 no-pad-lr msg" data-bind="html:text"></div>
</div>
<div class="col-xs-2 no-pad-lr text-right print">
<form class="col-xs-12 no-pad-l" action="/foretag/individkort/skapaPdfAvanmalan.html" method="POST" id="avanmalanpdf" name="avanmalan" target="_blank">
<span class="glyphicon glyphicon-print" onclick=""></span>
<input type="hidden" name="avanmalan" data-bind="value:ko.toJSON($root.printableEmployee)" />
Skriv ut
</form>
</div>
</div>
</div>
</div>
</div>
The problem still persists however, but setting a delay in the print-method triggers the submit-event:
self.print = function () {
setTimeout(function () {
document.forms.avanmalan.submit();
}, 600);
}
Your approach indicates that you seem to be not really familiar with knockout and try to do too much in a "jQuery" kind of way.
With knockout, your user interface is a function of your view model. All changes in the DOM have to be a result of changes in the underlying data. The task of manually adding input fields with JS code is not part of this approach.
In the following, there is no custom code that modifies the DOM. Everything is done by knockout.
var vm = {
rep: {
messages: [
{ color: '', icon: '', text: '<b>Message 1</b> - Text', data: 'some data here 1' },
{ color: '', icon: '', text: '<b>Message 2</b> - Text', data: 'some data here 2' },
{ color: '', icon: '', text: '<b>Message 3</b> - Text', data: 'some data here 3' }
]
},
catchPost: function () {
// dummy function to prevent an actual form POST
console.log("...would send the following data to the server:");
console.log(ko.toJSON(this.data, null, 2));
return false;
}
};
ko.applyBindings(vm);
button.submit {
border: 0px none;
padding: 0;
margin: 0;
text-decoration: underline;
background-color: transparent;
color: blue;
cursor: pointer;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script>
<div data-bind="with: rep">
<div data-bind="foreach: messages">
<div id="error" data-bind="css: color">
<div><span data-bind="css: icon"></span></div>
<div><div data-bind="html: text"></div></div>
<div>
<form action="/createPDF.html" method="POST" target="_blank" data-bind="submit: $root.catchPost">
<input type="hidden" name="loneandringar" data-bind="value: ko.toJSON(data)">
<button class="submit" id="print-tgl">Skriv ut</button>
</form>
</div>
</div>
</div>
</div>
There is no need for any custom code in such a simple scenario. Unless you have an explicit dependency on jQuery UI (or a similar library), I suggest you remove jQuery from your application altogether. You can use a dedicated Ajax library if you require it - such as reqwest - but generally speaking, jQuery is more of a hindrance than a help in knockout applications.

How to add divs with some classess to another div (inside each other) in html / javascript

I want to list my products from database by clicking on category in html/view.
Firstly I created it in HTML (static) just to check how this is going to look, and it looks lik this:
Here is my html:
<div class="col-md-8" style="margin-top: -15px;">
<div class="products row">
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coke.png">
<p class="product-title">
Product no1
</p>
</div>
</div>
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/pepsi.png">
<p class="product-title">
Product no2
</p>
</div>
</div>
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coffe.png">
<p class="product-title">
Product no3
</p>
</div>
</div>
</div>
</div>
And now I want to create this block dynamically:
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coffe.png">
<p class="product-title">
Product no N
</p>
</div>
</div>
Here is what I've tried so far:
<script>
function onSelectGroup(Id) {
$.ajax({
method: "GET",
url: "Products/GetProductsByCategoryId",
data: { categoryId: Id }
})
.done(function (response) {
//In response I am getting my products, looping through them to create divs like in code above
for (var i = 0; i < response.length; i++) {
//<div class="col-md-3">
// <div class="article-holder">
// <img class="img-responsive" src="images/picture_not_available_400-300.png">
// <p class="product-title">
// Product no 1
// </p>
// </div>
// </div>
//Trying to append it to my .product class because it's parent of this divs above
$(".products").append('<div class="col-md-3"></div>');
$(".products).appendChild('<div class="article-holder"></div>');
}
})};
</script>
But this is not working unfortunatelly... I tried few another things, but this appendings are not working as expected :/
Thanks guys for any help
Cheers
There are many answers posted for the question which might solve the issue with the javascript code. I am posting a different approach as OP specifically requested for it in the comments.
At times, i do not like to build complex HTML markup in javascript with jQuery ( i afraid i might make typos (missing "" or ' etc..). In that case, i would like to have my action method return a view result (the HTML markup) as the response of my ajax call and i can simply update the DOM with that as needed.
public ActionResult GetProductsByCategoryId(int categoryId)
{
var p = db.Products.Where(a=>a.CategoryId==categoryId).ToList();
return PartialView("ProductList",p);
}
Now i will have a partial view called ProductList.cshtml, which is strongly typed to a list of products and i can loop through the items passed to it and render whatever markup i want.
Here is a simple example where i am rendering a div with css class col-md-3 for each item in the collection passed to it. You can update it to render whatever markup you want to render.
#model List<Product>
#foreach (var item in Model)
{
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="#item.ImageUrl">
<p class="product-title">
#item.Name
</p>
</div>
</div>
}
Now all i have to do is, call this action method, and use the response to update my DOM. Let's give an Id to the container div which we will update
<div class="col-md-8" >
<div id="product-list" class="products row">
</div>
</div>
Now when the ajax call receives a response from server, update the inner html of the DOM element with Id product-list
$.ajax({
method: "GET",
url: "#Url.Action("GetProductsByCategoryId","Products")",
data: { categoryId: 2345 }
})
.done(function(response) {
$("#product-list").html(response);
}).fail(function(a, a, e) {
alert(e);
});
Keep in mind that, now you are getting a bigger payload (the resulting HTML)
from the server compared to the JSON data. So use this approach as you feel appropriate to do so. With this approach, i can use the C# methods in my partial view (For example, to build the path to an image in a location/ use Html helper methods etc)
I you create the dom element like any string, and append it to the container
function onSelectGroup(Id) {
//In response I am getting my products, looping through them to create divs like in code above
for (var i = 0; i <10; i++) {
let item = `<div class="col-md-3">
<div class="article-holder">
<img class="img-responsive" src="images/picture_not_available_400-300.png">
<p class="product-title">
Product no ${i}
</p>
</div>
</div>`
//Trying to append it to my .product class because it's parent of this divs above
$(".products").append(item);
}
};
onSelectGroup();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="col-md-8" style="margin-top: -15px;">
<div class="products row">
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coke.png">
<p class="product-title">
Product no1
</p>
</div>
</div>
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/pepsi.png">
<p class="product-title">
Product no2
</p>
</div>
</div>
<div class="col-md-3">
<div class="product-holder">
<img class="img-responsive" src="images/coffe.png">
<p class="product-title">
Product no3
</p>
</div>
</div>
</div>
</div>
You can create a new element with jquery and fill it properly
for (var i = 0; i < response.length; i++) {
//<div class="col-md-3">
// <div class="article-holder">
// <img class="img-responsive" src="images/picture_not_available_400-300.png">
// <p class="product-title">
// Product no 1
// </p>
// </div>
// </div>
//Trying to append it to my .product class because it's parent of this divs above
var newelem = $('<div class="col-md-3"></div>');
var artholder = $('<div class="article-holder"></div>');
newelem.append(artholder);
artholder.append(<your-image><your article title>);
}
You was close; all you needed to do was create an element for each item in the results object. I've used test data in the example.
https://jsfiddle.net/tw0vrpyy/
var response = {
item1: {
id: "id1",
title: "title1",
img: "img_src1.jpg"
},
item2: {
id: "id2",
title: "title2",
img: "img_src2.jpg"
}
};
var product = document.getElementsByClassName('response')[0];
Object.keys(response).forEach(function(key) {
var el = '<div class="col-md-3">' +
'<div class="article-holder">' +
'<img class="img-responsive" src="'+ response[key].img +'">' +
'<p class="product-title">' +
response[key].title +
'</p>' +
'</div>' +
'</div>';
product.innerHTML += el;
});

Issues rendering handlebars to HTML

When I render my handlebars template in html, it looks like it's essentially skipping filling in the "handle bars" portion. I'm essentially printing messages with a title and content, and I'm using a "!each" helper to display all of my messages. I originally thought it was because it was because it was escaping the html around it, so I tried using a triple handle bar {{{ on each part however using the each helper with the triple stash gave me an error. Am I possibly using the handlebars incorrectly?
the typescript I used to render the HTML and my handlebars template is below:
public static refreshData(data: any) {
$("#indexMain").html(Handlebars.templates['main.hbs'](data));
//helper function for upvote button
Handlebars.registerHelper('getUButton', function (id) {
id = Handlebars.escapeExpression(id);
return new Handlebars.SafeString(
"<button type='button' class='btn btn-default up-button' id='u" + id + "'>Upvote</button>"
);
});
//helper function for downvote button
Handlebars.registerHelper("getDButton", function (id) {
id = Handlebars.escapeExpression(id);
return new Handlebars.SafeString(
"<button type='button' class='btn btn-default down-button' id='d" + id + "'>DownVote</button>"
);
});
// Grab the template script
var theTemplateScript = $("#main-template").html();
// Compile the template
var theTemplate = Handlebars.compile(theTemplateScript);
//get messages from server and add them to the context
// This is the default context, which is passed to the template
var context = {
messages: data
}
console.log("context:")
console.log(context);
// Pass data to the template
var theCompiledHtml = theTemplate(context);
console.log(theCompiledHtml);
// Add the compiled html to the page
$("#messages-placeholder").html(theTemplate(context));
//add all click handlers
//get all buttons with id starting with u and set the click listerer
$(".up-button").click((event) => {
var id = $(event.target).attr("id").substring(1);
main.upvote(id)
});
//get all buttons with id starting with d and set the click listerer
$(".down-button").click((event) => {
var id = $(event.target).attr("id").substring(1);
main.downvote(id)
});
}
<script id="main-template" type="text/x-handlebars-template">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Current Messages</h3>
</div>
<div class="panel-body">
<div class="list-group" id="message-list">
<!-- for each message, create a post for it with title, content, upvote count, and upvote button -->
{{#each messages}}
<li class="list-group-item">
<span class="badge">Vote Count: {{likeCount}}</span>
<h4 class="list-group-item-heading">{{title}}</h4>
<p class="list-group-item-text">{{content}}</p>
<div class="btn-group btn-group-xs" role="group" aria-label="upvote">
{{getUButton id}}
</div>
<div class="btn-group btn-group-xs" role="group" aria-label="downvote">
{{getDButton id}}
</div>
</li>
{{/each}}
</div>
</div>
</div>
</script>
<div id="messages-placeholder"></div>
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Post New Message</h3>
</div>
<div class="input-group">
<span class="input-group-addon">Title</span>
<input id="newTitle" type="text" class="form-control" placeholder="Title" aria-describedby="newTitle">
</div>
<div class="input-group">
<span class="input-group-addon">Message</span>
<input id="newMessage" type="text" class="form-control" placeholder="Message" aria-describedby="newMessage">
</div>
<div class="btn-group" role="group" aria-label="create">
<button type="button" class="btn btn-default" id="postNewMessage">Post Message</button>
</div>
<span class="label label-danger" id="incompleteAcc"></span>
</div>
Okay, then it is likely the data provided to your template is not in the correct form. Here's a working snippet (with non-essentials stripped out). The data passed to your refreshData template must be an array. Make sure it isn't an object containing an array.
<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/2.0.0/handlebars.js"></script>
</head>
<body>
<script>
let refreshData = (data) => {
// Grab the template script
var theTemplateScript = $("#main-template").html();
// Compile the template
var theTemplate = Handlebars.compile(theTemplateScript);
//get messages from server and add them to the context
// This is the default context, which is passed to the template
var context = {
messages: data
};
console.log("context:", context);
// Add the compiled html to the page
$("#messages-placeholder").html(theTemplate(context));
}
$(() => {
var data = [
{ likeCount: 3, title: 'My Title', content: 'Some content'},
{ likeCount: 0, title: 'My 2nd Title', content: 'Some other content'}
];
refreshData(data);
})
</script>
<script id="main-template" type="text/x-handlebars-template">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Current Messages</h3>
</div>
<div class="panel-body">
<div class="list-group" id="message-list">
<!-- for each message, create a post for it with title, content, upvote count, and upvote button -->
{{#each messages}}
<li class="list-group-item">
<span class="badge">Vote Count: {{likeCount}}</span>
<h4 class="list-group-item-heading">{{title}}</h4>
<p class="list-group-item-text">{{content}}</p>
</li>
{{/each}}
</div>
</div>
</div>
</script>
<div id="messages-placeholder"></div>
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Post New Message</h3>
</div>
<div class="input-group">
<span class="input-group-addon">Title</span>
<input id="newTitle" type="text" class="form-control" placeholder="Title" aria-describedby="newTitle">
</div>
<div class="input-group">
<span class="input-group-addon">Message</span>
<input id="newMessage" type="text" class="form-control" placeholder="Message" aria-describedby="newMessage">
</div>
<div class="btn-group" role="group" aria-label="create">
<button type="button" class="btn btn-default" id="postNewMessage">Post Message</button>
</div>
<span class="label label-danger" id="incompleteAcc"></span>
</div>
</body>
</html>
When I am faced with issues like this, I eliminate different things until I either get clarity or something I removed fixes the problem. Now I have isolated where the problem lies. In your situation, the issue is likely the data being passed so verify that. Then try stripping out your helpers to see if they are causing issues.

Using ngInfiniteScroll to output JSON from a remote source

I have made a small app using AngularJS 1.4, that outputs JSON data from a remote source.
Here is the JSON data in question.
Here is my view - the link to ngInfiniteScroll comes in at the top of the container:
<body ng-app="cn" ng-controller="MainCtrl as main">
<div id="header" class="container-fluid">
<p>Camper News</p>
</div>
<div class="container">
<div infinite-scroll="feed.loadMore()" infinite-scroll-distance="3">
<div ng-repeat="newsItem in myData" class="news-row col-sm-12 col-xs-12">
<div class="col-sm-2 col-xs-12">
<div id="img-container">
<img ng-src={{newsItem.author.picture}} id="user-avatar" />
</div>
</div>
<div class="news-text col-sm-10 col-xs-12">
<a href={{newsItem.link}}><em>{{newsItem.headline}}</em></a>
</div>
<div class="col-sm-10 col-xs-12" id="link-description">
{{newsItem.metaDescription}}
</div>
<div class="col-sm-12 col-xs-12" id="bottom-text">
<div class="col-sm-4 col-xs-12" id="author">
<a href='http://www.freecodecamp.com/{{newsItem.author.username}}'>{{newsItem.author.username}}</a>
</div>
<div class="col-sm-4 col-xs-12" id="likes">
<i class="fa fa-thumbs-o-up"></i> {{newsItem.upVotes.length}}
</div>
<div class="col-sm-4 col-xs-12" id="timestamp">
<span am-time-ago={{newsItem.timePosted}} | amFromUnix></span>
</div>
</div>
</div>
</div>
</div>
</body>
I am attempting to stagger the loading and outputting of the data using ngInfiniteScroll. I'm just not sure how it would work:
app.controller('MainCtrl', function($scope, Feed) {
$scope.feed = new Feed();
});
app.factory('Feed', function($http) {
var Feed = function() {
this.items = [];
this.after = '';
};
Feed.prototype.loadMore = function() {
var url = "http://www.freecodecamp.com/news/hot";
$http.get(url).success(function(data) {
var items = data;
// Insert code to append to the view, as the user scrolls
}.bind(this));
};
return Feed;
});
Here is a link to the program on Codepen. The code that relates to ngInfiniteScroll (controller and factory) is currently commented out in favour of a working version, but this of course loads all links at once.
What do I need to insert in my factory in order to make the JSON load gradually?
From what I can tell, by looking at FreeCodeCamps' story routes, there is no way to query for specific ranges of the "hot news" stories.
It looks to just return json with a fixed 100 story limit.
function hotJSON(req, res, next) {
var query = {
order: 'timePosted DESC',
limit: 1000
};
findStory(query).subscribe(
function(stories) {
var sliceVal = stories.length >= 100 ? 100 : stories.length;
var data = stories.sort(sortByRank).slice(0, sliceVal);
res.json(data);
},
next
);
}
You can use infinite scroll for the stories it does return to display the local data you retrieve from the request in chunks as you scroll.

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