I recently decided to try Ember.js.
I set up a small application, but I can't get something to work.
I have a file app.html
<!doctype>
<html>
<head>
...
</head>
<body>
<script type="text/x-handlebars">
...
</script>
</body>
</html>
Now, of course, this doesn't render anything. I include handlebars.js, ember.js, and app.js and now then everything renders properly.
The problem is that when I try to add something with curly braces, the output is blank. For example, if I set some variables in my JS files and want to display it in my app, like <h1>{{title}}</h1>, I get <h1></h1>. When I try to put {{input value="Username"}}, nothing gets displayed.
I get no error messages, except when I use closing tags. For example, this
{{#link-to "http://google.ca"}}Link{{/link-to}}
Will make my whole web page simply display
line 117: interleaved closing tag: link-to
I have no idea what is wrong. Even googling the error message doesn't help much.
Any hint?รง
UPDATE
This code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Ember Starter Kit</title>
<link rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/normalize/2.1.0/normalize.css">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="http://builds.handlebarsjs.com.s3.amazonaws.com/handlebars-v1.3.0.js"></script>
<script src="http://builds.emberjs.com/tags/v1.8.0/ember.js"></script>
<script type="text/javascript">
App = Ember.Application.create();
App.Router.map(function() {
// put your routes here
});
App.IndexRoute = Ember.Route.extend({
model: function() {
return ['red', 'yellow', 'blue'];
}
});
</script>
</head>
<body>
<script type="text/x-handlebars">
<h2>Welcome to Ember.js</h2>
{{outlet}}
</script>
<script type="text/x-handlebars" data-template-name="index">
Link
<ul>
{{#each item in model}}
<li>{{item}}</li>
{{/each}}
</ul>
</script>
</body>
</html>
Renders a blank page with this error message:
line 36: interleaved closing tag: each
I'm not sure that's normal.
link-to is meant for ember routes only. (http://emberjs.com/guides/templates/links/)
In your case I would just write the html for the link in the template directly.
Here is a small sample ember.js app with the google.ca link, I have a feeling that your html may not be setup correctly with an outlet and a template:
http://emberjs.jsbin.com/qivunivabo/3/edit
I found the problem and this is really stupid.
My HTML files are delivered by a framework that uses Mustache as its template engine (server side) and therefore it renders all the {{something}} tags before sending the output to the broswer.
:/
Related
I have an Ember application running with hadlebars. I have several ember templates in my HTML page, but I ran into a slight dilemma - I can't escape an HTML code within script tag. I am looking to insert a non-working raw HTML into script tag for illustrative purposes. Will it be of help by using .hbs file method? I would prefer not to use .hbs method.
<script type="text/x-handlebars" data-template-name="name">
<html>
<head>
so on....
</head>
</html>
</script>
Thank you.
You can do this exactly the same way you would do it in normal HTML: escape the HTML entities:
<script type="text/x-handlebars" data-template-name="name">
<html>
<head>
so on....
</head>
</html>
</script>
I'm new to ember.js (but I know MVC from my CakePHP experiences and JS as well)
and in the last 2 weeks I build a little app at work which loads
sideloaded JSON data with the REST-Adapter. I added some buttons with actions
and everything works fine and I learned a lot, but it takes time to figure out the details.
All my controllers, routes and models are not organised at the moment in a folderstruture
which is described in the ember.js-Guide: http://guides.emberjs.com/v1.12.0/concepts/naming-conventions/
Now I want to move the files to the folderstructure. But then the application does not work.
It seems to my that the resolver can not finde the files at runtime. But why?
An easy example which does not work:
in "app.js" (loaded with -tag in "index.html"):
App = Ember.Application.create({
LOG_RESOLVER: true // just for debugging
});
in "router.js" (loaded with -tag after "app.js" in "index.html"):
App.Router.map(function(){
this.route('mytest');
});
in "routes/mytest.js":
export default Ember.Route.extend({
setupController: function(controller) {
controller.set('title', "Hello world!");
}
});
in "controllers/mytest.js":
export default Ember.Controller.extend({
appName: 'mytest'
});
in "indes.html":
<script type="text/x-handlebars">
{{#link-to 'mytest' }}Mytest{{/link-to}}<br/>
{{outlet}}
</script>
<script type="text/x-handlebars" id="mytest">
mytest Template
<h1>appName: {{appName}}</h1>
<h2>title: {{title}}</h2>
</script>
The Handlebar-template "mytest" is showen, but {{appName}} and {{title}} are empty.
If I moved the "mytest"-Template to "templates/mytest.hbs" nothing is showen.
Seems to my that the resolver does not work. Or something wrong with the naming-conventions Guide?
My another assumption:
Resolver-Stuff only works when using a buildprocess like in ember-cli.
Using "ember-1.12.1.debug", "ember-template-compiler-1.12.1"
Thanks for help.
-update-
Here the "index.html" - simple example:
<!doctype html>
<html class="no-js" lang="">
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title></title>
</head>
<body>
<script type="text/x-handlebars">
{{#link-to 'mytest' }}Mytest{{/link-to}}<br/>
{{outlet}}
</script>
<script type="text/x-handlebars" id="mytest">
mytest Template
<h1>appName: {{appName}}</h1>
<h2>title: {{title}}</h2>
</script>
<script src="libs/jquery-2.1.4.js"></script>
<script src="libs/ember-template-compiler-1.12.1.js"></script>
<script src="libs/ember-1.12.1.debug.js"></script>
<script src="app.js" ></script>
<script src="router.js" ></script>
</body>
</html>
At the moment I guess that the ember.js guide about naming conventions (guides.emberjs.com/v1.12.0/concepts/naming-conventions) left out, that "Ember.js uses a runtime resolver to wire up your objects without a lot of boilerplate" only works with "ember-cli" or the older "ember app kit" or another tool, but not when the application is running. So no JS-Files will be loaded from the server from while running the JS-application.
I have seen this work in previous versions of Ember but I cannot get it to work in version 1.8
I would like the addNewView method in the index controller to create and add new App.ReusableView with its designated template as an element to the DOM div. I have tried several combinations and none work with this ember version.
OR, am I approaching this wrong and have the template using an {{#each}} to read from a model and have the controller just add elements to the controller?
jsbin: http://jsbin.com/xidoqo/1/edit?html,js,console,output
error
Error: Assertion Failed: You cannot append to an existing Ember.View. Consider using Ember.ContainerView instead.
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Playground Ember</title>
<link rel="stylesheet" href="css/normalize.css">
<link rel="stylesheet" href="css/style.css">
<link rel="stylesheet" type="text/css" href="css/bootstrap-v3.1.1.min.css">
</head>
<body>
<script type="text/x-handlebars">
<h2>main page</h2>
{{outlet}}
</script>
<script type="text/x-handlebars" id="index">
<button {{action 'addNewView'}}>addNewView</button>
<div id='divHolderId'></div>
</script>
<script type='text/x-handlebars' data-template-name='reusable'>
my reusable view content
</script>
<script src="js/libs/jqueryv1.11.0.min.js"></script>
<script src="js/libs/bootstrapv3.1.1.min.js"></script>
<script src="js/libs/handlebars-v1.3.0.js"></script>
<script src="js/libs/ember-1.8.1.js"></script>
<script src="js/app.js"></script>
</body>
</html>
app.js
App = Ember.Application.create();
App.IndexController = Ember.Controller.extend({
actions: {
addNewView: function() {
console.log('addNewView called');
var view = App.ReusableView.create();
view.appendTo('#divHolderId'); // error:
}
}
});
App.ReusableView = Ember.View.extend({
templateName: 'reusable'
});
edit1: (also tried instantiating a ContainerView with the same error)
addNewView: function() {
console.log('addNewView called');
var container = Ember.ContainerView.create({
childViews: [App.ReusableView.create()]
});
container.appendTo('#divHolderId');
}
If you absolutely must use views, then this will work: http://jsbin.com/zufomiweqe/2/edit
It's a little strange, though, the Ember.ContainerView's API didn't really get too much love when it was implemented. One of the bad things is that any actions to be triggered on the ContainerView have to be triggered via view.parentView, since the child views don't directly have access to the ContainerView's context.
Try that out, though, I hope it works out for you :-)
Have you checked out components at all? What you're describing feels very much like the way that we did things in Ember before components existed, and it was all very unwieldy and error-prone.
I'm not sure about your specific use-case, but I would have an array that represents the contexts for your views, and clicking addNewView would simply push a context to the array. In your template:
{{#each thing in contexts}}
{{my-new-component thing}}
{{/each}}
I am just starting with the bare-bones starter kit, trying to do something very basic.
In my end result app, there will be a list of categories and subcategories that serve as the nav for the app. My solution being an Ember novice, and just to get something working, was to start with the tutorial by Tom Dale and try moving from there. So, I set up a variable to hold some dummy models to use just to get something on the screen.
When I try to run the app, I get the error Uncaught TypeError: Cannot set property 'dataSourceBinding' of undefined
EDIT--
I have tried moving the declaration of the categories variable to the top of the app.js file, but still get the same error.
My question is really two questions:
What am I missing/doing incorrectly?
I realize that ultimately setting up the app with the categories as a model on the index action is probably not the best approach. This list needs to be dynamic as it will be configurable by users. Is there a better way to have this dynamic nav included in the main template?
app.js:
MSSWApp = Ember.Application.create();
MSSWApp.Router.map(function() {
this.resource('categories', function() {
this.resource('category', { path: ':category_id' });
});
});
MSSWApp.IndexRoute = Ember.Route.extend({
model: function() {
return categories;
}
});
var categories = [{
id: 1,
title: "Auto & Mechanical"
}, {
id: 2,
title: "Beauty & Fashion"
}, {
id: 3,
title: "Careers & Education"
}];
index.html:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="initial-scale=1.0">
<title>Test Ember Model on Index</title>
<link rel="stylesheet" href="css/normalize.css">
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<script type="text/x-handlebars">
<h1>Categories</h1>
<ul>
{{#each in model}}
<li>
<h2>
{{#link-to 'category' this}}
{{title}}
{{/link-to}}
</h2>
<ul>
<li>
Sub 1-1
</li>
<li>
Sub 1-2
</li>
<li>
Sub 1-3
</li>
</ul>
</li>
{{/each}}
</ul>
{{outlet}}
</script>
<script src="js/libs/jquery-1.10.2.js"></script>
<script src="js/libs/handlebars-1.1.2.js"></script>
<script src="js/libs/ember-1.5.1.js"></script>
<script src="js/app.js"></script>
<!-- to activate the test runner, add the "?test" query string parameter -->
<script src="tests/runner.js"></script>
</body>
</html>
Turns out that the template needs a name, otherwise Ember assumes that's the application template.
setting up the script tag like this:
<script type="text/x-handlebars" data-template-name="index">
did the trick
I'm trying to create a simple TODO app based on the one in the Getting Started Ember.js tutorials, but with persistence to a backend.
I've had everything working until I wanted to look at wrapping my markup for rendering a todo in a view (called 'todo-element'), to enable drag & drop sorting.
Then, my view refused to render. I've simplified the markup for the view just to render the text 'Hello', to try to debug things. The instance of the view sets the tagName to 'li'. So I should be getting a list of lis with the text 'Hello' in them. However, all I get is a list of empty lis.
This is the markup:
<!DOCTYPE html>
<html>
<head>
<title>Todos</title>
</head>
<body>
<script type="text/x-handlebars">
{{outlet}}
</script>
<script type="text/x-handlebars" data-template-name="todos">
<section id="todos">
<header>
<h1>The TODOs</h1>
{{input type="text" placeholder="Enter new TODO description here ..."
value=newDescription action="createTodo"}}
<button {{action "createTodo"}} id="add-todo">Add</button>
</header>
<ul id="todos">
{{#each itemController="todo"}}
{{todo-element}}
{{/each}}
</ul>
</section>
</script>
<script type="text/x-handlebars" data-template-name="todo-element">
<span>Hello</span>
</script>
<script type="text/javascript" src="javascripts/jquery"></script>
<script type="text/javascript" src="javascripts/handlebars-1.0.0.js"></script>
<script type="text/javascript" src="javascripts/ember.js"></script>
<script type="text/javascript" src="javascripts/ember-data.js"></script>
<script type="text/javascript" src="javascripts/todos/app.js"></script>
<script type="text/javascript" src="javascripts/todos/todo.js"></script>
<script type="text/javascript" src="javascripts/todos/router.js"></script>
<script type="text/javascript" src="javascripts/todos/todos_controller.js"></script>
<script type="text/javascript" src="javascripts/todos/todo_controller.js"></script>
<script type="text/javascript" src="javascripts/todos/todo_element_view.js"></script>
<script type="text/javascript" src="javascripts/todos/edit_todo_view.js"></script>
</body>
</html>
And this is the code for the view:
Todos.TodoElementView = Ember.View.extend( {
templateView : 'todo-element',
tagName : 'li'
} );
Ember.Handlebars.helper( 'todo-element', Todos.TodoElementView );
My best guess is that the 'todo-element' markup is not getting associated with the TodoElementView, as I get exactly the same empty list of lis if I change the 'todo-element' markup's data-template-name to something random.
If anybody could help me with where I'm going wrong here, I'd be very grateful.
Cheers,
Doug.
think you are little confused between ember components and ember views
1. A view is called with view helper {{view App.ViewName}}. Your code {{todo-element}} looks more like a component.
In your component you have a static tag span hello so I guess it's showing only hello. Put dynamic data in it using {{}}