Client Side Validations

Client Side Validations Brian Cardarella @bcardarella http://bcardarella.com

Problems...Extracted code, a real mess to maintainSupporting both Rails 2 & 3 is hardNo nested attributesInconsistent validation modeletc...

RewriteClient side validation best practicesNested attributesSer ver side fallbackValidation message rendering consistencyCustom validatorsCustom FormBuildersInternationalized messagesRails 3 onlyjQuery only

Installinclude in your Gemﬁlerun ‘rails g client_side_validations:install’include ‘rails.validations.js’ in your layoutif you’re not using a custom FormBuilder (i.e.Formtastic or SimpleForm) uncomment theﬁeld_error_proc in the initializer

ZOMG LIVE CODING!

Supported ValidatorsAll Rails 3 ValidatorsConditionals fallback to ser ver (:if, :unless)State taken into account (:create, :update)

Custom ValidatorsProperly write a Rails 3 Validator

How most do it...http://railscasts.com/episodes/211-validations-in-rails-3

The better way

Remote Validators

ZOMG Moar Live Coding!

CallbacksclientSideValidations.callbacks.element.after(element, eventData)clientSideValidations.callbacks.element.before(element, eventData)clientSideValidations.callbacks.element.fail(element, message, callback, eventData)clientSideValidations.callbacks.element.pass(element, callback, eventData)clientSideValidations.callbacks.form.after(form, eventData)clientSideValidations.callbacks.form.before(form, eventData)clientSideValidations.callbacks.form.fail(form, eventData)clientSideValidations.callbacks.form.pass(form, eventData)

Use Case: Gemcutter

Use Case: jQuery Mobile

Use Case: Multi-step form

Filter Validators

Rails 3.1Engines - Assets ser ved via Sprockets

Client Side Validations Brian Cardarella @bcardarella http://bcardarella.com https://github.com/bcardarellahttps://github.com/bcardarella/client_side_validations

Client Side Validations

by bcardarella on May 12, 2011

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Client Side Validations — Presentation Transcript