![]() If you want to get what data is in your model, you can use the function model.toJSON() When you input a new string, the model will be updated. var SampleView=() Īfter connecting the view, model and controller, the page should be able render different views with different fragment. Create a viewīenefit: If the view changes, the model is going to be updated as well. The Following Example requires jQuery.js, Backbone.js and Underscore.js. It means we can change the fragment at the end of the URL to render different views without refreshing a page. ![]() One of the great things about backbone is the localized router. As most developers know that pattern, they could make code to be much easier to maintain in the future. Backbone is a great framework for them to separate the model, view and router. Watch out.Many frontend developers might face code management problems when they are working on a huge web application that has a page containing lots of features without refreshing the page. More to follow on other interesting aspects of backbone pagination and real time event handling. This approach if you are consuming bunch of JSON and don’t want to go whole hog single page. To have proper frontend architecture (rather than jquery callback spaghetti), it made unit testing frontendįeatures easier without resorting to a integration test framework (like Cucumber), we totally recommend Using backbone.js outside single page application is easy and worked pretty well for us. We used listenTo instead of on and all the events were unbound when Or model events but then we found that it does not release the event handlers when the remove function Leaks if the event binding is not done in a correct manner. One important lesson we learnt is to be careful with handling events in Backbone. The rest is then handled by onFormSuccess or onFormError. So we decided to use regular ajaxįorm submission where the data is sent using form-url-encoded (or multipart/form-data for file uploads)Ĭontent-type and the server returning JSON. The format of input attributes were different than the models. We did not use JSON format for submitting the data since we had to support file uploads. OnFormError: (event, xhr, status, error) => # Handles server-side errors # In both the cases the `ModelView` automatically renders the changes. # For update, it updates the model attributes. OnFormSuccess: (event, data)=> # Here we add the newly created resource to the collection. View # Since we were using twitter-bootstrap modal, we set the dom attributes here.Ĭlass : "modal hide fade" tabindex: "-1" "data-backdrop" : "static" "data-keyboard" : "false" events: -> "submit form" : "onFormSubmit" "ajax:success form" : "onFormSuccess" "ajax:error form" : "onFormError" onFormSubmit: => # It does client-side validation if required and then submits the To begin with we created a ListView class with common features to fetch and dispalyĬlass CloudGui. Create and update forms are managed using a FormView.Each row in the table itself is rendered with a ModelView.ListView then fetches the resources through collection and renders in a tabular.When the page is loaded it initializes the code to create a ListView.In base classes and subclass our views and models to share the same code. Using similar code and logic so we decided to abstract common behaviour and logic It was all working fine in terms of performance, but then we found a few challengesĪs the code-base was growing and becoming complex. Later we started to use backbone for forms and other pages as well. Did we mention we used jasmine for testing all our javascriptĬode :). Not only the filtering code was easier to maintain, it became quiteĮasy to test as well. Implement client-side filtering of tabular data. We were using backbonejs only for pages where we needed to Also we didn’t use the router as this was not a single page app Were using the generated code but as we became more confident we stopped using Since we were already using coffeescript we added the rails-backbone gemĪs it has generators for creating scaffolds in coffeescript. This encouraged us to find aīetter alternative where we could use javascript in more modular fashion andĪlso test it. Javascript code, and tests used to break often. As a result testing became more complex, DOM changes used to break Soon application became moreĬomplex because of lots of server side javascript code directly interacting Like creation, updation and deletion of resources. Resources will be displayed in tabular form and ajax requests for management Think about this app as GUI for Amazon AWS. Recently we worked on a cloud resouces management application written on railsįor one of our clients.
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