I am working on a contact bar which renders all contacts of a user in a html list.
What I have:
- UserModel - This is a simple Backbone.Model with username and email
- UserCollection - This is used as the contact list
- ContactsView - This is the ul contact list
- ContactView - This is a single contact model rendered as li
I am currently breaking my head about a solution how (and where) I can fetch my UserCollection and how I pass the single models down to a single ContactView item.
Specific hurdles are:
- Where should I fetch, store the UserCollection
- How do I render the contact list
- How do I render the contact items
- How do I prevent fetch({ success: callback }) from breaking my code structure
My current code is this:
entrance point:
// create a new instance of the contact list view
var view = new ContactsView();
// insert the rendered element of the contact list view in to the dom
$('div.contacts-body').html(view.render().el);
view.fetch({ success: view.loadContacts });
ContactsView:
define(
['jquery', 'underscore', 'backbone', 'text!templates/conversations/contacts.html', 'collections/users', 'views/conversations/contact'],
function($, _, Backbone, ContactsTemplate, UserCollection, ContactView) {
var ContactsView = Backbone.View.extend({
tagName: "ul",
className: "contacts unstyled",
attributes: "",
// I am feeling uneasy hardcoding the collection into the view
initialize: function() {
this.collection = new UserCollection();
},
// this renders our contact list
// we don't need any template because we just have <ul class="contacts"></ul>
render: function() {
this.$el.html();
return this;
},
// this should render the contact list
// really crappy and unflexible
loadContacts: function() {
this.collection.each(function(contact) {
// create a new contact item, insert the model
var view = new ContactView({ model: contact });
// append it to our list
this.$el.append(view.render().el);
});
}
});
return ContactsView;
});
ContactView
define(
['jquery', 'underscore', 'backbone', 'text!templates/conversations/contact.html'],
function($, _, Backbone, ContactTemplate) {
var ContactView = Backbone.View.extend({
tagName: "li",
className: "contact",
attributes: "",
template:_.template(ContactTemplate),
initialize: function() {
this.model.bind('change', this.render, this);
this.model.bind('destroy', this.remove, this);
},
render: function() {
this.$el.html(this.template(this.model.toJSON()));
return this;
}
});
return ContactView;
});
Could somebody help me about my four hurdles.
Good example links are welcome. I oriented my code style at the todos list unfortunatly the todos list isn't that advanced...
UPDATED CODE:
define(
['jquery', 'underscore', 'backbone', 'text!templates/conversations/contacts.html', 'collections/users', 'views/conversations/contact'],
function($, _, Backbone, ContactsTemplate, UserCollection, ContactView) {
var ContactsView = Backbone.View.extend({
tagName: "ul",
className: "contacts unstyled",
attributes: "",
events: {
},
initialize: function() {
this.collection = new UserCollection();
this.collection.on('reset', this.render);
this.collection.fetch();
},
render: function() {
// in chromium console
console.log(this.el); // first: html, second: undefined
console.log(this.$el); // first: html in array, second: undefined
this.$el.empty(); // error on the called that this.$el is undefined
this.collection.each(function(contact) {
var view = new ContactView({ model: contact });
this.$el.append(view.el);
}.bind(this));
return this;
}
});
return ContactsView;
Can it be that reset is triggering this.render twice?