Comments Hello! Are you currently developing with Knockout? Much has changed in the landscape of client-side libraries since Knockout was considered a popular choice, but there still seem to be many successful projects using it today. I would love to hear about the interesting things that you are building with Knockout in For the last several years, I have been working with React on the front-end and Node on the server-side while working on LeanKit.
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Create an index. ViewModel using the kb. Model using kb. ViewModel This step shows how to render a Backbone. Model with a relations in a collection-typed attribute named friends. ViewModel in ko. A shared implementation for both a kb.
ViewModel and a kb. NodeViewModel name, opened, node kbi. Note: the node needs to be unwrapped because when Knockback generates kb. ViewModels and kb.
Collection observables for nested Backbone. Models and Backbone. Collections, it wraps them in ko. Observables in case the underlying relationship changes.
NodeViewModel Next, we will add the attribute functionality used for Backbone. ViewModels: class kbi. ViewModel indicates the node is a Backbone. Model if node instanceof kb. Model if this. ViewModel for its type rather than performing this check directly in the template. Views Next, we will finalize the View templates for each node type as started in the Control Flow and Library Architecture sections.
Because Knockout handles all of the dynamic aspects of the template, we can simply use a static string for our templates. CollectionObservable is actually a ko. ViewModels for each Backbone. StringTemplateEngine extends ko. StringTemplateSource kbi.
CollectionNodeView else return ko. CollectionNodeView ; default: return ko. StringTemplateSource class simply stores a string and returns it when text is called. The kbi. StringTemplateEngine class is derived from ko. Register kbi. StringTemplateEngine with Knockout Setting the template engine is done in the index. For this tutorial, add the following to index. You can use kbi.
FetchedModel generates kbi. FetchedCollection when it encounters a JSON array, and otherwise, it just stores the simple type in the attribute.
We can use the kbi. FetchedCollection and a kb. Model with the url string and collection kbi. FetchedCollection attributes and we use Knockback to create a kb. We initialize the url value after everything is set up so the first fetch is triggered. Future Enhancements The inspector works for the most part, but as with anything it can always be improved!
Specific attribute editors could be rendered depending on the attribute type. Handling attributes being added or removed: currently, the attribute names are stored in the kbi. NodeViewModel when the model is initially checked. We could watch for change events and update the attributes lists accordingly Customized Styling:when I initially implemented the inspector, I used Twitter Bootstrap to provide styling and icons, but in the released version, I removed the dependency.
Perhaps there should be hooks in the templates to customize more styling aspects of the inspector? Some action buttons or functionality could be added. If you would like to implement these enhancements or any others that would be generally useful and contribute them back to the project, please just submit a pull request.
Can another provide examples of where one would be superior over the other? Getting Started with Knockback. ModelBinder which has proven to be faster, and easier-to-understand. Backbone to the rescue! What does this allow?
Tutorial: Getting Started with Knockback.js
Of course, this is just a simple example, but hopefully you get the picture. Conventions and useful tips Knockback and kb are aliased so you can use kb. What 2. Observable is the class it creates and from which you derive if you want to override behavior.
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