lib/paperclip/schema.rb
require 'active_support/deprecation'
module Paperclip
# Provides helper methods that can be used in migrations.
module Schema
COLUMNS = {:file_name => :string,
:content_type => :string,
:file_size => :bigint,
:updated_at => :datetime}
def self.included(base)
ActiveRecord::ConnectionAdapters::Table.send :include, TableDefinition
ActiveRecord::ConnectionAdapters::TableDefinition.send :include, TableDefinition
ActiveRecord::ConnectionAdapters::AbstractAdapter.send :include, Statements
ActiveRecord::Migration::CommandRecorder.send :include, CommandRecorder
end
module Statements
def add_attachment(table_name, *attachment_names)
raise ArgumentError, "Please specify attachment name in your add_attachment call in your migration." if attachment_names.empty?
options = attachment_names.extract_options!
attachment_names.each do |attachment_name|
COLUMNS.each_pair do |column_name, column_type|
column_options = options.merge(options[column_name.to_sym] || {})
add_column(table_name, "#{attachment_name}_#{column_name}", column_type, column_options)
end
end
end
def remove_attachment(table_name, *attachment_names)
raise ArgumentError, "Please specify attachment name in your remove_attachment call in your migration." if attachment_names.empty?
attachment_names.each do |attachment_name|
COLUMNS.keys.each do |column_name|
remove_column(table_name, "#{attachment_name}_#{column_name}")
end
end
end
def drop_attached_file(*args)
ActiveSupport::Deprecation.warn "Method `drop_attached_file` in the migration has been deprecated and will be replaced by `remove_attachment`."
remove_attachment(*args)
end
end
module TableDefinition
def attachment(*attachment_names)
options = attachment_names.extract_options!
attachment_names.each do |attachment_name|
COLUMNS.each_pair do |column_name, column_type|
column_options = options.merge(options[column_name.to_sym] || {})
column("#{attachment_name}_#{column_name}", column_type, column_options)
end
end
end
def has_attached_file(*attachment_names)
ActiveSupport::Deprecation.warn "Method `t.has_attached_file` in the migration has been deprecated and will be replaced by `t.attachment`."
attachment(*attachment_names)
end
end
module CommandRecorder
def add_attachment(*args)
record(:add_attachment, args)
end
private
def invert_add_attachment(args)
[:remove_attachment, args]
end
end
end
end