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Use the return of the conditional for variable assignment and comparison.
Open

      if @target.respond_to?(:tempfile)
        @tempfile = copy_to_tempfile(@target.tempfile)
      else
        @tempfile = copy_to_tempfile(@target)
      end
Severity: Minor
Found in lib/paperclip/io_adapters/uploaded_file_adapter.rb by rubocop

Line is too long. [84/80]
Open

      @interpolators_cache ||= all.reverse!.map! { |method| [method, ":#{method}"] }
Severity: Minor
Found in lib/paperclip/interpolations.rb by rubocop

Use def with parentheses when there are parameters.
Open

    def content_type_extension attachment, style_name
Severity: Minor
Found in lib/paperclip/interpolations.rb by rubocop

This cops checks for parentheses around the arguments in method definitions. Both instance and class/singleton methods are checked.

Example: EnforcedStyle: require_parentheses (default)

# The `require_parentheses` style requires method definitions
# to always use parentheses

# bad
def bar num1, num2
  num1 + num2
end

def foo descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name
  do_something
end

# good
def bar(num1, num2)
  num1 + num2
end

def foo(descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name)
  do_something
end

Example: EnforcedStyle: requirenoparentheses

# The `require_no_parentheses` style requires method definitions
# to never use parentheses

# bad
def bar(num1, num2)
  num1 + num2
end

def foo(descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name)
  do_something
end

# good
def bar num1, num2
  num1 + num2
end

def foo descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name
  do_something
end

Example: EnforcedStyle: requirenoparenthesesexceptmultiline

# The `require_no_parentheses_except_multiline` style prefers no
# parantheses when method definition arguments fit on single line,
# but prefers parantheses when arguments span multiple lines.

# bad
def bar(num1, num2)
  num1 + num2
end

def foo descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name
  do_something
end

# good
def bar num1, num2
  num1 + num2
end

def foo(descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name)
  do_something
end

Use def with parentheses when there are parameters.
Open

    def attachment attachment, style_name
Severity: Minor
Found in lib/paperclip/interpolations.rb by rubocop

This cops checks for parentheses around the arguments in method definitions. Both instance and class/singleton methods are checked.

Example: EnforcedStyle: require_parentheses (default)

# The `require_parentheses` style requires method definitions
# to always use parentheses

# bad
def bar num1, num2
  num1 + num2
end

def foo descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name
  do_something
end

# good
def bar(num1, num2)
  num1 + num2
end

def foo(descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name)
  do_something
end

Example: EnforcedStyle: requirenoparentheses

# The `require_no_parentheses` style requires method definitions
# to never use parentheses

# bad
def bar(num1, num2)
  num1 + num2
end

def foo(descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name)
  do_something
end

# good
def bar num1, num2
  num1 + num2
end

def foo descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name
  do_something
end

Example: EnforcedStyle: requirenoparenthesesexceptmultiline

# The `require_no_parentheses_except_multiline` style prefers no
# parantheses when method definition arguments fit on single line,
# but prefers parantheses when arguments span multiple lines.

# bad
def bar(num1, num2)
  num1 + num2
end

def foo descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name
  do_something
end

# good
def bar num1, num2
  num1 + num2
end

def foo(descriptive_var_name,
        another_descriptive_var_name,
        last_descriptive_var_name)
  do_something
end

Prefer single-quoted strings inside interpolations.
Open

    RIGHT_HERE = "#{__FILE__.gsub(%r{\A\./}, "")}:#{__LINE__ + 3}"
Severity: Minor
Found in lib/paperclip/interpolations.rb by rubocop

This cop checks that quotes inside the string interpolation match the configured preference.

Example: EnforcedStyle: single_quotes (default)

# bad
result = "Tests #{success ? "PASS" : "FAIL"}"

# good
result = "Tests #{success ? 'PASS' : 'FAIL'}"

Example: EnforcedStyle: double_quotes

# bad
result = "Tests #{success ? 'PASS' : 'FAIL'}"

# good
result = "Tests #{success ? "PASS" : "FAIL"}"

Line is too long. [82/80]
Open

        if allowed_types.present? && allowed_types.none? { |type| type === value }
Severity: Minor
Found in lib/paperclip/validators/attachment_content_type_validator.rb by rubocop

Use the new Ruby 1.9 hash syntax.
Open

        @url_generator.for(style_name, default_options.merge(:timestamp => options))
Severity: Minor
Found in lib/paperclip/attachment.rb by rubocop

This cop checks hash literal syntax.

It can enforce either the use of the class hash rocket syntax or the use of the newer Ruby 1.9 syntax (when applicable).

A separate offense is registered for each problematic pair.

The supported styles are:

  • ruby19 - forces use of the 1.9 syntax (e.g. {a: 1}) when hashes have all symbols for keys
  • hash_rockets - forces use of hash rockets for all hashes
  • nomixedkeys - simply checks for hashes with mixed syntaxes
  • ruby19nomixed_keys - forces use of ruby 1.9 syntax and forbids mixed syntax hashes

Example: EnforcedStyle: ruby19 (default)

# bad
{:a => 2}
{b: 1, :c => 2}

# good
{a: 2, b: 1}
{:c => 2, 'd' => 2} # acceptable since 'd' isn't a symbol
{d: 1, 'e' => 2} # technically not forbidden

Example: EnforcedStyle: hash_rockets

# bad
{a: 1, b: 2}
{c: 1, 'd' => 5}

# good
{:a => 1, :b => 2}

Example: EnforcedStyle: nomixedkeys

# bad
{:a => 1, b: 2}
{c: 1, 'd' => 2}

# good
{:a => 1, :b => 2}
{c: 1, d: 2}

Example: EnforcedStyle: ruby19nomixed_keys

# bad
{:a => 1, :b => 2}
{c: 2, 'd' => 3} # should just use hash rockets

# good
{a: 1, b: 2}
{:c => 3, 'd' => 4}

Redundant RuntimeError.new call can be replaced with just the message.
Open

        raise RuntimeError.new("Style #{name} has no processors defined.") if style.processors.blank?
Severity: Minor
Found in lib/paperclip/attachment.rb by rubocop

This cop checks for RuntimeError as the argument of raise/fail.

It checks for code like this:

Example:

# Bad
raise RuntimeError, 'message'

# Bad
raise RuntimeError.new('message')

# Good
raise 'message'

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

      require 'openssl' unless defined?(OpenSSL)
Severity: Minor
Found in lib/paperclip/attachment.rb by rubocop

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"

Surrounding space missing in default value assignment.
Open

    def hash attachment=nil, style_name=nil
Severity: Minor
Found in lib/paperclip/interpolations.rb by rubocop

Checks that the equals signs in parameter default assignments have or don't have surrounding space depending on configuration.

Example:

# bad
def some_method(arg1=:default, arg2=nil, arg3=[])
  # do something...
end

# good
def some_method(arg1 = :default, arg2 = nil, arg3 = [])
  # do something...
end

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

    def updated_at attachment, style_name
Severity: Minor
Found in lib/paperclip/interpolations.rb by rubocop

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

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

    def id attachment, style_name
Severity: Minor
Found in lib/paperclip/interpolations.rb by rubocop

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

Redundant else-clause.
Open

      else
Severity: Minor
Found in lib/paperclip/interpolations.rb by rubocop

Checks for empty else-clauses, possibly including comments and/or an explicit nil depending on the EnforcedStyle.

Example: EnforcedStyle: empty

# warn only on empty else

# bad
if condition
  statement
else
end

# good
if condition
  statement
else
  nil
end

# good
if condition
  statement
else
  statement
end

# good
if condition
  statement
end

Example: EnforcedStyle: nil

# warn on else with nil in it

# bad
if condition
  statement
else
  nil
end

# good
if condition
  statement
else
end

# good
if condition
  statement
else
  statement
end

# good
if condition
  statement
end

Example: EnforcedStyle: both (default)

# warn on empty else and else with nil in it

# bad
if condition
  statement
else
  nil
end

# bad
if condition
  statement
else
end

# good
if condition
  statement
else
  statement
end

# good
if condition
  statement
end

Use the new Ruby 1.9 hash syntax.
Open

                  :max => max_value_in_human_size(record),
Severity: Minor
Found in lib/paperclip/validators/attachment_size_validator.rb by rubocop

This cop checks hash literal syntax.

It can enforce either the use of the class hash rocket syntax or the use of the newer Ruby 1.9 syntax (when applicable).

A separate offense is registered for each problematic pair.

The supported styles are:

  • ruby19 - forces use of the 1.9 syntax (e.g. {a: 1}) when hashes have all symbols for keys
  • hash_rockets - forces use of hash rockets for all hashes
  • nomixedkeys - simply checks for hashes with mixed syntaxes
  • ruby19nomixed_keys - forces use of ruby 1.9 syntax and forbids mixed syntax hashes

Example: EnforcedStyle: ruby19 (default)

# bad
{:a => 2}
{b: 1, :c => 2}

# good
{a: 2, b: 1}
{:c => 2, 'd' => 2} # acceptable since 'd' isn't a symbol
{d: 1, 'e' => 2} # technically not forbidden

Example: EnforcedStyle: hash_rockets

# bad
{a: 1, b: 2}
{c: 1, 'd' => 5}

# good
{:a => 1, :b => 2}

Example: EnforcedStyle: nomixedkeys

# bad
{:a => 1, b: 2}
{c: 1, 'd' => 2}

# good
{:a => 1, :b => 2}
{c: 1, d: 2}

Example: EnforcedStyle: ruby19nomixed_keys

# bad
{:a => 1, :b => 2}
{c: 2, 'd' => 3} # should just use hash rockets

# good
{a: 1, b: 2}
{:c => 3, 'd' => 4}

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

require 'active_model/validations/numericality'
Severity: Minor
Found in lib/paperclip/validators/attachment_size_validator.rb by rubocop

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. [125/80]
Open

        raise Paperclip::Errors::CommandNotFoundError.new("Could not run the `convert` command. Please install ImageMagick.")
Severity: Minor
Found in lib/paperclip/thumbnail.rb by rubocop

Freeze mutable objects assigned to constants.
Open

    MULTI_FRAME_FORMATS = %w(.mkv .avi .mp4 .mov .mpg .mpeg .gif)
Severity: Minor
Found in lib/paperclip/thumbnail.rb by rubocop

This cop checks whether some constant value isn't a mutable literal (e.g. array or hash).

Example:

# bad
CONST = [1, 2, 3]

# good
CONST = [1, 2, 3].freeze

Unused method argument - base. If it's necessary, use _ or _base as an argument name to indicate that it won't be used. You can also write as included(*) if you want the method to accept any arguments but don't care about them.
Open

    def self.included(base)
Severity: Minor
Found in lib/paperclip/schema.rb by rubocop

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

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

require 'active_support/deprecation'
Severity: Minor
Found in lib/paperclip/schema.rb by rubocop

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"

Use Hash#key? instead of Hash#has_key?.
Open

            if options.has_key?(validator_kind)
Severity: Minor
Found in lib/paperclip/validators.rb by rubocop

This cop (by default) checks for uses of methods Hash#haskey? and Hash#hasvalue? where it enforces Hash#key? and Hash#value? It is configurable to enforce the inverse, using verbose method names also.

Example: EnforcedStyle: short (default)

# bad Hash#haskey? Hash#hasvalue?

# good Hash#key? Hash#value?

Example: EnforcedStyle: verbose

# bad Hash#key? Hash#value?

# good Hash#haskey? Hash#hasvalue?

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