FEBRUARY 15, 2020
Validate Users Model Password
Alright lets re invent the wheel for funsies. Why? because its saturday night and i want something fun to do- before all these people come trash my house.
Assumptions
- you know how to Ruby on Rails
- you have a user model set up with a password field
Why?
I wrote this because i wanted to throw individual errors for each requirement they were missing. Thank you stack overflow ! I didn't cite my sources , but check the stack youll find them.
What we are building:
Code
class User < ApplicationRecord
validate :password_lower_case
validate :password_uppercase
validate :password_special_char
validate :password_contains_number
def password_uppercase
return if !!password.match(/\p{Upper}/)
errors.add :password, ' must contain at least 1 uppercase '
end
def password_lower_case
return if !!password.match(/\p{Lower}/)
errors.add :password, ' must contain at least 1 lowercase '
end
def password_special_char
special = "?<>',?[]}{=-)(*&^%$#`~{}!"
regex = /[#{special.gsub(/./){|char| "\\#{char}"}}]/
return if password =~ regex
errors.add :password, ' must contain special character'
end
def password_contains_number
return if password.count("0-9") > 0
errors.add :password, ' must contain at least one number'
end
end
We use errors.add
to add message to the error messages on attribute. More than one error can be added to the same attribute. If no message is supplied, :invalid is assumed. ruby docs
Notice we have some sick regular expressions i got off stack overflow
in each of these validations, we return if the field matches the requirements, if it doesn't we use errors.add
to bubble up some sick errors.
This shit is so open source, please use as you will my friends!
happy coding!
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