Module: ActiveScaffold::Bridges::FileColumn::FileColumnHelpers

Defined in:
lib/active_scaffold/bridges/file_column/file_column_helpers.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.file_column_fields(klass) ⇒ Object 



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# File 'lib/active_scaffold/bridges/file_column/file_column_helpers.rb', line 8

def file_column_fields(klass)
  klass.instance_methods.select { |m| m.to_s =~ /_just_uploaded\?$/ }.collect { |m| m[0..-16].to_sym }
end

.generate_delete_helpers(klass) ⇒ Object 



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# File 'lib/active_scaffold/bridges/file_column/file_column_helpers.rb', line 12

def generate_delete_helpers(klass)
  file_column_fields(klass).each do |field|
    next if klass.method_defined?(:"#{field}_with_delete=")

    klass.attr_reader :"delete_#{field}"
    klass.define_method "delete_#{field}=" do |value|
      value = (value == 'true') if value.is_a?(String)
      return unless value

      # passing nil to the file column causes the file to be deleted.  Don't delete if we just uploaded a file!
      send("#{field}=", nil) unless send("#{field}_just_uploaded?")
    end
  end
end

.klass_has_file_column_fields?(klass) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_scaffold/bridges/file_column/file_column_helpers.rb', line 27

def klass_has_file_column_fields?(klass)
  true unless file_column_fields(klass).empty?
end

Instance Method Details

#field_has_image_version?(field, version = 'thumb') ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_scaffold/bridges/file_column/file_column_helpers.rb', line 40

def field_has_image_version?(field, version = 'thumb')
  options = options_for_file_column_field(field)
  versions = options[:magick][:versions]
  raise unless versions.stringify_keys[version]

  true
rescue StandardError
  false
end

#file_column_fields ⇒ Object 



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# File 'lib/active_scaffold/bridges/file_column/file_column_helpers.rb', line 32

def file_column_fields
  @file_column_fields ||= FileColumnHelpers.file_column_fields(self)
end

#generate_delete_helpers ⇒ Object 



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# File 'lib/active_scaffold/bridges/file_column/file_column_helpers.rb', line 50

def generate_delete_helpers
  FileColumnHelpers.generate_delete_helpers(self)
end

#options_for_file_column_field(field) ⇒ Object 



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# File 'lib/active_scaffold/bridges/file_column/file_column_helpers.rb', line 36

def options_for_file_column_field(field)
  allocate.send(:"#{field}_options")
end