thoughtbot/paperclip

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lib/paperclip/validators/attachment_presence_validator.rb

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Prefer double-quoted strings unless you need single quotes to avoid extra backslashes for escaping.
Open

require 'active_model/validations/presence'

Checks if uses of quotes match the configured preference.

Example: EnforcedStyle: single_quotes (default)

# bad
"No special symbols"
"No string interpolation"
"Just text"

# good
'No special symbols'
'No string interpolation'
'Just text'
"Wait! What's #{this}!"

Example: EnforcedStyle: double_quotes

# bad
'Just some text'
'No special chars or interpolation'

# good
"Just some text"
"No special chars or interpolation"
"Every string in #{project} uses double_quotes"

Line is too long. [81/80]
Open

      # * +unless+: Same as +if+ but validates if lambda or method returns false.

Unused method argument - value. If it's necessary, use _ or _value as an argument name to indicate that it won't be used.
Open

      def validate_each(record, attribute, value)

This cop checks for unused method arguments.

Example:

# bad

def some_method(used, unused, _unused_but_allowed)
  puts used
end

Example:

# good

def some_method(used, _unused, _unused_but_allowed)
  puts used
end

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