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What is the best way to validate a cost/price input by a user, validation rules below:
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Rails validation defines valid states for each of your Active Record model classes. They are used to ensure that only valid details are entered into your database. Rails make it easy to add validations to your model classes and allows you to create your own validation methods as well.
So remember folks, validates is for Rails validators (and custom validator classes ending with Validator if that's what you're into), and validate is for your custom validator methods.
The purpose of this distinction is that with save! , you are able to catch errors in your controller using the standard ruby facilities for doing so, while save enables you to do the same using standard if-clauses.
#rails 3 validates :price, :format => { :with => /\A\d+(?:\.\d{0,2})?\z/ }, :numericality => {:greater_than => 0, :less_than => 10} #rails 2 validates_numericality_of :price, :greater_than => 0, :less_than => 10 validates_format_of :price, :with => /\A\d+(?:\.\d{0,2})?\z/ If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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