module ActiveScaffold::Bridges::FileColumn::FileColumnHelpers

Public Instance Methods

field_has_image_version?(field, version="thumb") click to toggle source
# File lib/active_scaffold/bridges/file_column/file_column_helpers.rb, line 39
def field_has_image_version?(field, version="thumb")
  begin
    # the only way to get to the options of a particular field is to use the instance method
    options = options_for_file_column_field(field)
    versions = options[:magick][:versions]
    raise unless versions.stringify_keys[version]
    true
  rescue
    false
  end
end
file_column_fields() click to toggle source
# File lib/active_scaffold/bridges/file_column/file_column_helpers.rb, line 31
def file_column_fields
  @file_column_fields||=FileColumnHelpers.file_column_fields(self)
end
generate_delete_helpers() click to toggle source
# File lib/active_scaffold/bridges/file_column/file_column_helpers.rb, line 51
def generate_delete_helpers
  FileColumnHelpers.generate_delete_helpers(self)
end
options_for_file_column_field(field) click to toggle source
# File lib/active_scaffold/bridges/file_column/file_column_helpers.rb, line 35
def options_for_file_column_field(field)
  self.allocate.send("#{field}_options")
end

Public Class Methods

file_column_fields(klass) click to toggle source
# File lib/active_scaffold/bridges/file_column/file_column_helpers.rb, line 6
def file_column_fields(klass)
  klass.instance_methods.grep(%r_just_uploaded\?$/).collect{|m| m[0..-16].to_sym }
end
generate_delete_helpers(klass) click to toggle source
# File lib/active_scaffold/bridges/file_column/file_column_helpers.rb, line 10
          def generate_delete_helpers(klass)
            file_column_fields(klass).each { |field|
              klass.send :class_eval, "                attr_reader :delete_#{field}
                
                def delete_#{field}=(value)
                  value = (value=="true") if String===value
                  return unless value
                  
                  # passing nil to the file column causes the file to be deleted.  Don't delete if we just uploaded a file!
                  self.#{field} = nil unless self.#{field}_just_uploaded?
                end
", __FILE__, __LINE__ + 1  unless klass.methods.include?("#{field}_with_delete=")
            }
          end
klass_has_file_column_fields?(klass) click to toggle source
# File lib/active_scaffold/bridges/file_column/file_column_helpers.rb, line 26
def klass_has_file_column_fields?(klass)
  true unless file_column_fields(klass).empty?
end