I have the following structure in my Ember app:
App.Router.map(function() {
this.route('shop', { path: '/shop' });
});
App.ShopRoute = Ember.Route.extend({
model: function() {
return $.getJSON( "/fruits"); // this returns a json like this: { apples: [...], oranges: [...]}
}
});
App.AppleListItemView = Ember.View.extend({
templateName: 'apple-list-item',
tagName: 'li',
classNames: ['apple']
});
App.AppleListItemController = Ember.ArrayController.extend({
color: "green",
});
Next, when I try to use {{color}} in the apple-list-item template, it prints nothing. How should I fix this?
You need to worry about your naming. A shop route in your router, expects a ShopRoute and a ShopController, but we can leave that out ember will generate one for you. and a shop template. You should consider your view an optional extension of your template. Ember always has an index route so you need an index template:
<script type="text/x-handlebars" data-template-name="index">
{{#link-to 'shop'}}shop!{{/link-to}}
</script>
And a shop template with an itemController in the each adding a controller to each element in the apples list:
<script type="text/x-handlebars" data-template-name="shop">
SHOP! {{color}}
<ul>
{{#each apple in model.apples itemController='apple'}}
<li class="apple">{{apple.model}} {{apple.color}}</li>
{{/each}}
</ul>
</script>
And then your application would look somehting like:
App = Ember.Application.create();
App.Router.map(function() {
this.route('shop', { path: '/shop' });
});
With a ShopRoute:
App.ShopRoute = Ember.Route.extend({
model: function() {
return { apples: [ 'grannysmith', 'pinklady' ], oranges: [ 'clementines' ]};
}
});
And a AppleController to be used as itemController:
App.AppleController = Ember.Controller.extend({
color: function() {
if (this.get('model') === 'grannysmith') {
return 'green';
}
return 'purple';
}.property('model'),
});
See this jsbin.
Related
How can you filter a data-list to render into multiple outlets in emberjs.
What I have now in not really working, but may help you understand what I want to achieve.
I can solve this by making multiple file-list.hbs template-files ( where I change file in the each to fileList1 or fileList2, ...), but that doesn't seem right.
What I want to achieve
I have a documents page where I want to list all of the document in the file list (see fixtures file). But instead of printing out one files-list, I want to split the lists so I have multiple lists according to the filter.
Please look at the code to understand it better ^^
Can anyone help? :)
File.FIXTURES
App.File.FIXTURES = [
{
id: 1,
showHomepage: false,
filter: 'filter1',
url: '/file1.pdf',
description: 'file1'
},
{
id: 2,
showHomepage: false,
filter: 'filter2',
url: '/file2.pdf',
description: 'file2'
},
{
id: 3,
showHomepage: true,
filter: 'filter2',
url: '/file3.pdf',
description: 'file3'
},
{
id: 4,
showHomepage: true,
filter: 'filter3',
url: '/file4.pdf',
description: 'file4'
}
];
Route
App.InfoDocumentenRoute = Ember.Route.extend({
model: function() {
var store = this.store;
return Ember.RSVP.hash({
fileList1: store.find('file' , { filter: "filter1" }),
fileList2: store.find('file' , { filter: "filter2" }),
fileList3: store.find('file' , { filter: "filter3" })
});
},
renderTemplate: function() {
this.render('file-list', { // the template to render
into:'info.documenten', // the route to render into
outlet: 'file-list-filter1', // the name of the outlet in the route's template
controller: 'file' // the controller to use for the template
});
this.render('file-list', { // the template to render
into:'info.documenten', // the route to render into
outlet: 'file-list-filter2', // the name of the outlet in the route's template
controller: 'file' // the controller to use for the template
});
this.render('file-list', { // the template to render
into:'info.documenten', // the route to render into
outlet: 'file-list-filter3', // the name of the outlet in the route's template
controller: 'file' // the controller to use for the template
});
}
});
info/documents.hbs
{{ outlet file-list-filter1 }}
{{ outlet file-list-filter2 }}
{{ outlet file-list-filter3 }}
file-list.hbs
<ul class="download-list">
{{#each file in file}}
<li class="download-list__item">
<a {{bind-attr href=file.url}} target="_blank" class="download-list__link">
<i class="icon-download download-list__link__icon"></i>
{{file.description}}
</a>
</li>
{{else}}
<li>
Geen documenten beschikbaar.
</li>
{{/each}}
I think the best way to go about this would be to declare your file-list.hbs as a partial and include it within your other templates where needed as: {{partial "file-list"}}. In your showHomepage where you only want to use it a single time, merely include the {{partial "file-list"}} within your showHomepage.hbs.
Then, for your InfoDocumentRoute, put the following to declare your model as an array of filelists:
App.InfoDocumentenRoute = Ember.Route.extend({
model: function() {
var store = this.store;
return [
store.find('file' , { filter: "filter1" }),
store.find('file' , { filter: "filter2" }),
store.find('file' , { filter: "filter3" })
];
}
});
And your InfoDocument.hbs as:
{{#each file in model}}
{{partial "file-list"}}
{{/each}}
Which will then render the file-list template for each item in the model array.
More info about partials
So from what i gather about your question you want to filter your model on your filter property on the model. I am sure there are a few ways to accomplish this but here is another possible solution that could spark another solution.
So in the route I returned the models. Then in the controller I created properties that are filtering the array of models from the route. Then in the template I loop over the array that filter property gives me in the controller and output in the template.
Heres JSBin. http://emberjs.jsbin.com/vunugida/5/edit
App.IndexRoute = Ember.Route.extend({
model: function() {
return this.store.findAll('File');
}
});
App.IndexController = Ember.ArrayController.extend({
filter1: function() {
return this.filter(function(item) {
return item.get('filter') === "filter1";
});
}.property(),
filter2: function() {
return this.filter(function(item) {
return item.get('filter') === "filter2";
});
}.property(),
filter3: function() {
return this.filter(function(item){
return item.get('filter') === "filter3";
});
}.property()
});
TEMPLATE:
<script type="text/x-handlebars" data-template-name="index">
<h1>Index Template</h1>
<ul>
{{#each}}
<li>{{url}}</li>
{{/each}}
</ul>
<p>Filter 1</p>
{{#each filter1}}
<li>{{url}}</li>
{{/each}}
<p>Filter 2</p>
{{#each filter2}}
<li>{{url}}</li>
{{/each}}
<p>Filter 3</p>
{{#each filter3}}
<li>{{url}}</li>
{{/each}}
</script>
I have an ember application with a model called users.js with associated controllers and routing. In my usersController.js, I have a function which counts the number of users in the system. I can then display this figure in my users template. However, I want to display that figure in my index template instead, is this possible? How would I go about it- right now the figure doesn't seem to be available for use outside of my users model.
Here's my usersController-
App.UsersController = Ember.ArrayController.extend({
sortProperties: ['name'],
sortAscending: true,
numUsers: function() {
return this.get('model.length');
}.property('model.[]')
});
And my html-
<script type = "text/x-handlebars" id = "index">
<h2>Homepage</h2>
//This is where I would like the figure to be
<h3>There are {{numUsers}} users </h3>
</script>
<script type = "text/x-handlebars" id = "users">
<div class="col-md-2">
{{#link-to "users.create"}}<button type="button" class="btn btn-default btn-lg"><span class="glyphicon glyphicon-plus"></button> {{/link-to}}
//This works fine
<div>Users: {{numUsers}}</div>
</div>
<div class="col-md-10">
<ul class="list-group">
{{#each user in controller}}
<li class="list-group-item">
{{#link-to "user" user}}
{{user.name}}
{{/link-to}}
</li>
{{/each}}
</ul>
{{outlet}}
</div>
</script>
You can just load all users in the IndexRoute, something like this:
App.IndexRoute = Ember.Route.extend({
model: function() {
return this.store.find('user');
}
});
And extract the shared logic, in that case user count, to a mixin, and use where needed:
App.UsersCountMixin = Ember.Mixin.create({
numUsers: function() {
return this.get('model.length');
}.property('model.[]')
});
App.IndexController = Ember.ArrayController.extend(App.UsersCountMixin, {
});
App.UsersController = Ember.ArrayController.extend(App.UsersCountMixin, {
sortProperties: ['name'],
sortAscending: true
});
So {{numUsers}} will be avaliable in your index template.
To share logic with more than one model, you will need to create some alias for model property to avoid ambiguity:
App.IndexRoute = Ember.Route.extend({
model: function() {
return Ember.RSVP.hash({
users: this.store.find('user'),
subjects: this.store.find('subject'),
})
}
});
App.UsersCountMixin = Ember.Mixin.create({
users: Ember.required(),
numUsers: function() {
return this.get('users.length');
}.property('users.[]')
});
App.SubjectsCountMixin = Ember.Mixin.create({
subjects: Ember.required(),
numSubjects: function() {
return this.get('subjects.length');
}.property('subjects.[]')
});
App.UsersController = Ember.ArrayController.extend(App.UsersCountMixin, {
users: Ember.computed.alias('model'),
sortProperties: ['name'],
sortAscending: true
});
App.SubjectsController = Ember.ArrayController.extend(App.SubjectsCountMixin, {
subjects: Ember.computed.alias('model'),
sortProperties: ['name'],
sortAscending: true
});
App.IndexController = Ember.ArrayController.extend(App.UsersCountMixin, App.SubjectsCountMixin, {});
Of course this is a lot of code to just show the data length, since you can just use:
<h3>There are {{users.length}} users </h3>
<h3>There are {{subjects.length}} subjecst </h3>
But I think you will have more complex computed properties to share. In that cases, mixins is a good way to achieve it.
How should i change the following code to work as expected, so doesnt change the completedness of other todos if i completed one?
itemController="todo" claimed to wrap each item in an own controllers but fails to do so.
index.html
<script type="text/x-handlebars" id="todos">
<ul>
{{#each controller itemController="todo"}}
<li>{{#link-to 'todo' this}}{{job}} -- {{#if isCompleted}}Completed{{else}}Incomplete{{/if}}{{/link-to}}</li>
{{/each}}
</ul>
{{outlet}}
</script>
<script type="text/x-handlebars" id="todo">
<p>Job: {{job}} -- {{#if isCompleted}}Completed{{else}}Incomplete{{/if}}</p>
<button {{action 'complete' controller}}>Complete</button>
</script>
app.js
App = Ember.Application.create();
App.Router.map(function() {
this.resource('todos', function() {
this.resource('todo', { path: ':todo_id' })
});
});
App.IndexRoute = Ember.Route.extend({
redirect: function() { this.transitionTo('todos'); }
});
App.TodosRoute = Ember.Route.extend({
model: function() {
return todos;
}
});
App.TodoRoute = Ember.Route.extend({
model: function(params) {
return todos.findBy('id', params.todos_id);
}
});
App.TodosController = Ember.ArrayController.extend({
});
App.TodoController = Ember.ObjectController.extend({
isCompleted: false,
actions: {
complete: function() {
this.set('isCompleted',true);
}
}
});
var todos = [{id: '1', job: 'running'}, {id: '2', job: 'swimming'}, {id: '3', job: 'study'}];
I believe that you are mixing things
1 you have a list of todos each backed by ist own controller in the App.TodosRoute but in the App.TodoRoute you have another instance of the todoController, since the property is at the controller level, you are viewving the property setted for the 4th instance of the controller, the one reponsible for the todoRoute that is singleton.
You can move the property to the model and everything will goes well.
App.TodoController = Ember.ObjectController.extend({
actions: {
complete: function() {
this.set('isCompleted',true);
}
}
});
var todos = [{id: '1', job: 'running',isCompleted: false}, {id: '2', job: 'swimming',isCompleted: false}, {id: '3', job: 'study',isCompleted: false}];
This is model
App.Store = DS.Store.extend({
revision: 12,
adapter: DS.FixtureAdapter
});
App.Markets = DS.Model.extend({
ids: DS.attr("string"),
name: DS.attr("string"),
created: DS.attr("string")
});
App.Markets.FIXTURES = [
{ids:"312", name:"joy", created:"2012/1/1"},
{ids:"412", name:"adel", created:"2012/1/2"},
{ids:"512", name:"john", created:"2012/1/3"}
];
App.Sources = DS.Model.extend({
source_channel: DS.attr("string"),
handle: DS.attr("handle")
});
App.Sources.FIXTURES = [
{source_channel:"sc1", handle: "hn1"},
{source_channel:"sc2", handle: "hn2"}
];
This is route.
var App = Ember.Application.create();
App.Router.map(function() {
this.resource('markets', {path: '/markets'}, function() {
this.resource("sources", { path: "/:market_id" });
});
});
App.MarketsRoute = Ember.Route.extend({
model: function () {
return App.Markets.find();
}
});
App.SourcesRoute = Ember.Route.extend({
model: function(){
return App.Sources.find();
}
});
This is template
<script type="text/x-handlebars" id="_sources">
{{#each sources in content}}
<span>{{sources.handle}}</span>
<span>{{sources.sources_channel}}</span>
{{/each}}
</script>
<script type="text/x-handlebars" id="markets">
{{#each markets in content }}
{{#linkTo 'sources' markets.ids class="test" }}<span>Source</span>{{/linkTo}}
<span>{{markets.name}}</span>
<span>{{markets.created}}</span>
{{/each}}
<div class="sources">
{{partial "sources"}}
</div>
</script>
When I go to /#/markets, I can see the markets lists. This is correct.
Focus in {{#linkTo 'sources' markets.ids class="test" }}Source{{/linkTo}} of markets template.
In here, markets.ids doesn't work.
I'd like to go to /#/markets/markets_id when I click the link.
Along with passing the object to the sources route in linkTo,
define serialize method in your App.SourcesRoute.
The template:
{{#linkTo 'sources' markets class="test" }}<span>Source</span>{{/linkTo}}
The Route:
App.SourcesRoute = Ember.Route.extend({
model: function(){
return App.Sources.find();
},
serialize: function(model) {
return { market_id: model.ids };
}
});
You want to use linkTo 'sources' markets instead. ie:- pass the model in the each loop to the `linkTo.
Note: Regarding your naming conventions. Ember likes models to be singular, and Routes/Controllers plural or singular depending on whether the route points to one or more models.
Edit: Clarification.
Change the linkTo to this,
{{#linkTo 'sources' markets class="test" }}<span>Source</span>{{/linkTo}}
Given the following code, I thought the person.index and nested person.finish routes would use the PersonController content/model property since theirs was empty/undefined? What am I doing wrong? http://jsfiddle.net/EasyCo/MMfSf/5/
To be more concise: When you click on the id, the {{id}} and {{name}} are blank? How do I fix that?
Functionality
// Create Ember App
App = Ember.Application.create();
// Create Ember Data Store
App.Store = DS.Store.extend({
revision: 11,
adapter: 'DS.FixtureAdapter'
});
// Create parent model with hasMany relationship
App.Person = DS.Model.extend({
name: DS.attr( 'string' ),
belts: DS.hasMany( 'App.Belt' )
});
// Create child model with belongsTo relationship
App.Belt = DS.Model.extend({
type: DS.attr( 'string' ),
parent: DS.belongsTo( 'App.Person' )
});
// Add Person fixtures
App.Person.FIXTURES = [{
"id" : 1,
"name" : "Trevor",
"belts" : [1, 2, 3]
}];
// Add Belt fixtures
App.Belt.FIXTURES = [{
"id" : 1,
"type" : "leather"
}, {
"id" : 2,
"type" : "rock"
}, {
"id" : 3,
"type" : "party-time"
}];
App.Router.map( function() {
this.resource( 'person', { path: '/:person_id' }, function() {
this.route( 'finish' );
});
});
// Set route behaviour
App.IndexRoute = Ember.Route.extend({
model: function() {
return App.Person.find();
},
renderTemplate: function() {
this.render('people');
}
});
Templates
<script type="text/x-handlebars">
<h1>Application</h1>
{{outlet}}
</script>
<script type="text/x-handlebars" id="people">
<h2>People</h2>
<ul>
{{#each controller}}
<li>
<div class="debug">
Is the person record dirty: {{this.isDirty}}
</div>
</li>
<li>Id: {{#linkTo person this}}{{id}}{{/linkTo}}</li>
<li>Name: {{name}}</li>
<li>Belt types:
<ul>
{{#each belts}}
<li>{{type}}</li>
{{/each}}
</ul>
</li>
{{/each}}
</ul>
</script>
<script type="text/x-handlebars" id="person">
<h2>Person</h2>
Id from within person template: {{id}}<br><br>
{{outlet}}
</script>
<script type="text/x-handlebars" id="person/index">
Id: {{id}}<br>
Name: <a href="#" {{action "changeName"}}>{{name}}</a><br><br>
{{#linkTo index}}Go back{{/linkTo}}<br>
{{#linkTo person.finish}}Go to finish{{/linkTo}}
</script>
<script type="text/x-handlebars" id="person/finish">
<h2>Finish</h2>
{{id}}
</script>
You can use this in your router:
model: function() {
return this.modelFor("person");
}
Instead of your's:
controller.set('content', this.controllerFor('person'));
Your views were served through different controllers, either Ember's generated one or the one you defined PersonIndexController and that contributed to the issue you were facing. Instead of patching your original example to make it work, i instead reworked it to show you how you should structure your views/routes to leverage Emberjs capabilities.
You should design your application/example as a series of states working and communicating with each other and captured in a Router map. In your example, you should have a people, person resource and a finish route with corresponding views and controllers, either you explicitly create them or let Ember do that for you, providing you're following its convention.
Here's a working exemple and below I highlighted some of the most important parts of the example
<script type="text/x-handlebars" data-template-name="people">
<h2>People</h2>
<ul>
{{#each person in controller}}
<li>
<div class="debug">
Is the person record dirty: {{this.isDirty}}
</div>
</li>
<li>Id: {{#linkTo 'person' person}}{{person.id}}{{/linkTo}}</li>
<li>Name: {{person.name}}</li>
<li>Belt types:
<ul>
{{#each person.belts}}
<li>{{type}}</li>
{{/each}}
</ul>
</li>
{{/each}}
</ul>
</script>
<script type="text/x-handlebars" data-template-name="person">
<h2>Person</h2>
Id from within person template: {{id}}<br><br>
Id: {{id}}<br>
Name: <a href="#" {{action "changeName"}}>{{name}}</a><br><br>
{{#linkTo index}}Go back{{/linkTo}}<br>
{{#linkTo person.finish}}Go to finish{{/linkTo}}
{{outlet}}
</script>
Models, Views, Controllers and Route definitions
DS.RESTAdapter.configure("plurals", { person: "people" });
App.Router.map( function() {
this.resource('people',function() {
this.resource('person', { path: ':person_id' }, function() {
this.route( 'finish');
});
})
});
App.PeopleController = Ember.ArrayController.extend();
App.PeopleRoute = Ember.Route.extend({
model: function() {
return App.Person.find();
}
})
App.IndexRoute = Ember.Route.extend({
redirect: function() {
this.transitionTo('people');
}
});
App.PersonRoute = Ember.Route.extend({
model: function(params) {
debugger;
return App.Person.find(params.client_id);
},
renderTemplate: function() {
this.render('person',{
into:'application'
})
}
})
App.PersonFinishRoute = Ember.Route.extend({
renderTemplate: function() {
this.render('finish',{
into:'application'
})
}
})