Module: Paperclip::Helpers

Included in:
Paperclip
Defined in:
lib/paperclip/helpers.rb

Instance Method Summary (collapse)

Instance Method Details

- (Object) class_for(class_name)



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# File 'lib/paperclip/helpers.rb', line 42

def class_for(class_name)
  class_name.split('::').inject(Object) do |klass, partial_class_name|
    if klass.const_defined?(partial_class_name)
      klass.const_get(partial_class_name, false)
    else
      klass.const_missing(partial_class_name)
    end
  end
end

- (Object) configure {|_self| ... }

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/paperclip/helpers.rb', line 3

def configure
  yield(self) if block_given?
end

- (Object) each_instance_with_attachment(klass, name)

Find all instances of the given Active Record model klass with attachment name. This method is used by the refresh rake tasks.



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# File 'lib/paperclip/helpers.rb', line 36

def each_instance_with_attachment(klass, name)
  class_for(klass).unscoped.where("#{name}_file_name IS NOT NULL").find_each do |instance|
    yield(instance)
  end
end

- (Object) interpolates(key, &block)



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# File 'lib/paperclip/helpers.rb', line 7

def interpolates key, &block
  Paperclip::Interpolations[key] = block
end

- (Object) reset_duplicate_clash_check!



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# File 'lib/paperclip/helpers.rb', line 52

def reset_duplicate_clash_check!
  @names_url = nil
end

- (Object) run(cmd, arguments = "", interpolation_values = {}, local_options = {})

The run method takes the name of a binary to run, the arguments to that binary and some options:

:command_path -> A $PATH-like variable that defines where to look for the binary
                 on the filesystem. Colon-separated, just like $PATH.

:expected_outcodes -> An array of integers that defines the expected exit codes
                      of the binary. Defaults to [0].

:log_command -> Log the command being run when set to true (defaults to true).
                This will only log if logging in general is set to true as well.

:swallow_stderr -> Set to true if you don't care what happens on STDERR.


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# File 'lib/paperclip/helpers.rb', line 25

def run(cmd, arguments = "", interpolation_values = {}, local_options = {})
  command_path = options[:command_path]
  Cocaine::CommandLine.path = [Cocaine::CommandLine.path, command_path].flatten.compact.uniq
  if logging? && (options[:log_command] || local_options[:log_command])
    local_options = local_options.merge(:logger => logger)
  end
  Cocaine::CommandLine.new(cmd, arguments, local_options).run(interpolation_values)
end