How to compare an input value with database value in rails model?

Question

I have a model called CustomizedBooking where I need to validate paid amount value equal to the price column of the database. Following is code snippet

validate :paid_amount_and_price
def paid_amount_and_price_check
    if paid_amount == price column value of the database
    errors.add(:paid_amount, "Must be equal to the price to process further!")
end

Please! somebody, suggest me

Ritesh Ranjan · Accepted Answer · 2017-12-12 10:44:44Z

1

We don't have to use any custom validation here, try this:

validates_numericality_of :paid_amount,
                          equal_to: ->(object) { object.price.to_f },
                          message: "Must be equal to the price to process further!"

or

validates :paid_amount, 
          :numericality => { equal_to: ->(object) { object.price.to_f },
                             message: "Must be equal to the price to process further!" }

edited Dec 12, 2017 at 10:44

answered Dec 12, 2017 at 10:30

Ritesh Ranjan

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Comments

puneet18 · Accepted Answer · 2017-12-12 10:11:24Z

0

try below code in model:

validate :paid_amount_and_price
def paid_amount_and_price_check
    unless paid_amount.to_f == price.to_f
      errors.add(:paid_amount, "Must be equal to the price to process further!")
    end
end

answered Dec 12, 2017 at 10:11

puneet18

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