BackboneJS - View Render

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Note that Backbone depends on the arity of your comparator function to determine between the two styles, so be careful if your comparator function is bound. If you have an example I can try to go into more detail about how I handle it... That way, if a customer asks if we have a board from a particular manufacturer, or an exact model of board, or both, we can do a quick look up. Uses event delegation for efficiency.

To make this clean and easy the flag should be added to your very own View which should extend the Backbone Base View. The following is the result:.

BackboneJS - View Render

Rendering a View is simple. This works great for any top-level view. The problem is in the child view. This means the child is no longer displaying data to the page or getting data from it. The web application is broken, and the programmer sits there frustrated. There are several ways to handle this situation. It has static content and serves as a container of child views. The child view container elements are never re-rendered, so they never go stale. Your view can now re-render appropriately, but its events will still be broken, as they are still stale. This second piece can be fixed with a call to delegateEvents. This method of handling stale sub views is effective and gets right at the heart of the problem. However, I find it messy, hacky, and non intuitive — which leaves me desiring a better solution. ChildView , render : function { this. ChildView , render: function { this. Use a Region My favorite way of handling this is with Marionette. Marionette addresses several of the pitfalls of Backbone — one of which is the issue of sub views. Using the Marionette object, you can declare a region with an element inside the parent view. To render the child view into the region, invoke region. This means that when the parent view is rendered, the views that are displayed in its regions update themselves automatically. No reassigning elements or delegate events calls are required. Marionette objects also have a way of defining regions in a hash, much like the backbone events hash. Edit — in Marionette version 2, Layout was renamed to LayoutView Example. What strategies do you use? A layout is a specialized item view. The regions hash in a layout can be thought of as a specialized way to assign elements to sub views. Instead of initializing the sub views by sending them an el, you can show them in a region that already has an element specified. Using setElement on the child view instead of delegateEvents seems to be a nice shorthand method. Great link and response — thanks for sharing! CollectionViews, Layouts, Regions, and Behaviors make managing views so much less painful. I had a bad experience with Rails and some of its components, so I was really keen on Backbone since it is less opinionated. But more opinionated is OK and can be useful as long as it gets along with my opinion. Thank you for the post!

Really curious to get your guys' take on this. The events property may also be defined as a function that jesus an events hash, to make it easier to programmatically define your events, as well as inherit backbone render function from parent views. It is up to their child views to handle any re-rendering when the model s change. When the two are entangled, change is hard; when logic doesn't depend on UI, your el becomes easier to work with. Let's create 3 very simple views. Client ids are handy when the model has not yet been saved to the server, and does not yet have its eventual true id, but already needs to be visible in the UI. We will also piece on responsibilities and separation of concerns, ultimately paving the way for us to build a scalable application with a sane code base. Stripe's was recently rewritten from scratch in CoffeeScript using Backbone. Your view can now re-render appropriately, but its events will still be broken, as they are still north. If you'd like to have Backbone use jQuery from Node, assign it like so: Backbone. An admin panel and partner CMS have also been extracted into their own API-consuming Backbone projects.