Module: Paperclip::Helpers

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

Instance Method Summary collapse

Instance Method Details

#class_for(class_name) ⇒ Object 



46
47
48
49
50
51
52
53
54
 
# File 'lib/paperclip/helpers.rb', line 46

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

#configure {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



3
4
5
 
# File 'lib/paperclip/helpers.rb', line 3

def configure
  yield(self) if block_given?
end

#each_instance_with_attachment(klass, name) ⇒ Object

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



40
41
42
43
44
 
# File 'lib/paperclip/helpers.rb', line 40

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

#interpolates(key, &block) ⇒ Object 



7
8
9
 
# File 'lib/paperclip/helpers.rb', line 7

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

#reset_duplicate_clash_check! ⇒ Object 



56
57
58
 
# File 'lib/paperclip/helpers.rb', line 56

def reset_duplicate_clash_check!
  @names_url = nil
end

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

The run method takes the name of a binary to run, the arguments to that binary, the values to interpolate and some local options.

:cmd -> The name of a binary to run.

:arguments -> The command line arguments to that binary.

:interpolation_values -> Values to be interpolated into the arguments.

:local_options -> The options to be used by Cocain::CommandLine.
                  These could be: runner
                                  logger
                                  swallow_stderr
                                  expected_outcodes
                                  environment
                                  runner_options



28
29
30
31
32
33
34
35
36
 
# File 'lib/paperclip/helpers.rb', line 28

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