backbone.validation | validation plugin for Backbone.js | Validation library
kandi X-RAY | backbone.validation Summary
kandi X-RAY | backbone.validation Summary
Good client side validation is an important part of giving your users a great experience when they visit your site. Backbone provides a validate method, but it is left undefined and it is up to you to override it with your custom validation logic. Too many times I have seen validation implemented as lots of nested ifs and elses. This quickly becomes a big mess. One other thing is that with libraries like Backbone, you hold your state in a Model, and don't tie it to the DOM. Still, when validating your models you probably want to inform your users about errors etc., which means modifying the DOM. Backbone.Validation tries to solve both these problems. It gives you a simple, extensible way of declaring validation rules on your model, and overrides Backbone's validate method behind the scene. And, it gives you a nice hook where you can implement your own way of showing the error messages to your user. If you are using node.js on the server you can also reuse your models and validation on the server side. How cool is that?. Backbone.Validation is a bit opinionated, meaning that you have to follow some conventions in order for it to work properly.
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backbone.validation Key Features
backbone.validation Examples and Code Snippets
Community Discussions
Trending Discussions on backbone.validation
QUESTION
I am using Backbone validation for validating some input fields, like so...
...ANSWER
Answered 2019-Feb-17 at 07:48What if I want to validate the input as the user is typing?
You will need to add an event listener to the user typing, and call the isValid
method:
QUESTION
I have inherited older backbone app with master-details scenario. On master view I have list of items (project) and when I click on an item I can edit it on details view (ProjectFormView).
The problemWhen I edit the project on ProjectFormView, all the previously opened project are edited with the same values as well.
Details:I've discovered, that the UI events like input change are triggered also on previously opened ProjectFormViews, so it look like some kind of memory leak.
This is how the view is instantiated:
...ANSWER
Answered 2018-Apr-23 at 15:27Looks like all the views are attached to $content
. Whenever you create a new view to this element, a new set of event listeners would be attached to this element.
Ideally you should remove existing views before creating new ones to free up memory using view's remove
method.
If you can't do this for some reason and want to keep all view objects created in memory at the same time, they need to have their own elements to bind events to.
You can do this by removing el: $content,
This let's backbone create an element for each view.
Then do $content.append(view.el)
after the view creation.
You'll have to detach these element from $content
while creating new views.
QUESTION
I have a really weird error where my registration form is not validating new input fields (gender, date of birth) when deployed. But that exact same code is validating on my local SCA Mont Blanc.
I have done a full deploy, ie, gulp deploy
.
I have overridden the Account
module. And my Account/Javascript/Account.Register.Model.js
file has the following validation added:
ANSWER
Answered 2017-Apr-13 at 00:17Well after dozens of hours trying to fix this, it turns out the error was down to the case of the 's' in my JavaScript
module folder.
In ns.package.json
I had:
QUESTION
I'm using the Backbone Validation plugin and would like to selectively validate different sets of model attributes at different times, is this possible?
My test model has validation for name
, age
and address
and if I wanted to validate only address
, how would I do this?
I thought it was a case of calling this.model.validate('address');
but all the validation rules seem to run?
JS
...ANSWER
Answered 2017-Jan-31 at 22:33isValid
To validate only certain fields, Backbone.Validation offers a modified version of isValid
.
If you pass the name of an attribute or an array of names, you can check whether or not the attributes are valid:
QUESTION
I try to to use Backbone.validation plugin.
Here is a link to this plugin.
https://github.com/thedersen/backbone.validation.
I want to start a validation, when I create a new model instance. Normally in Backbone should implement a validate function and then when we should pass {validate:true}
How achieve the same result with this plugin?
ANSWER
Answered 2017-Jan-08 at 14:08Problem solved
So in a plugin documentation is information about validation on model without binding with a view.
Using model validation
The philosophy behind this way of using the plugin, is to give you an easy way to implement validation across all your models without the need to bind to a view. Of course, if you use this option the callbacks to update the view is not executed, since there is no way of knowing what view a model belongs to.
Validation mix-in
To add validation to your models, mix in the validation on the Model's prototype.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install backbone.validation
Development: backbone-validation.js 22.7kb
Production: backbone-validation-min.js 2.7kb gzipped
Development: backbone-validation-amd.js 24.2kb
Production: backbone-validation-amd-min.js 2.8kb gzipped
It's easy to get up and running. You only need to have Backbone (including underscore.js) in your page before including the Backbone.Validation plugin. If you are using the default implementation of the callbacks, you also need to include jQuery. The plugin is tested with, and should work with the following versions of.
Backbone >= 1.0.0
Underscore >= 1.4.3
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