Module: Fend::Plugins::ObjectValidation

Defined in:

lib/fend/plugins/object_validation.rb

Overview

‘object_validation` plugin adds support for validating object attributes and methods.

class UserModelValidation < Fend
  plugin :object_validation
  plugin :validation_options

  validate do |user|
    user.attrs(:username, :email) do |username, email|
      username.validate(presence: true, max_length: 20, type: String)
      email.validate(presence: true, format: EMAIL_REGEX, type: String)
    end
  end
end

user = User.new(username: "", email: "invalid@email")
validation = UserModelValidation.call(user)

validation.success? #=> false
validation.messages #=> { username: ["must be present"], email: ["is in invalid format"] }

As the example shows, the only change is that instread of the ‘#params` you should use `#attrs` method.

## Handling hash values

If attribute value should be a hash, you can still use the ‘#params` method:

# user.address #=> { city: "My city", street: "My street" }
user.attrs(:address) do |address|
  address.params(:city, :street) do |city, street|
    # ...
  end
end

Defined Under Namespace

Modules: ParamMethods