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Markus Schirp
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Jul 19, 2010
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Original file line number | Diff line number | Diff line change |
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module Paperclip | ||
module Validate | ||
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module ClassMethods | ||
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# Places ActiveRecord-style validations on the size of the file assigned. The | ||
# possible options are: | ||
# * +in+: a Range of bytes (i.e. +1..1.megabyte+), | ||
# * +less_than+: equivalent to :in => 0..options[:less_than] | ||
# * +greater_than+: equivalent to :in => options[:greater_than]..Infinity | ||
# * +message+: error message to display, use :min and :max as replacements | ||
def validates_attachment_size(*fields) | ||
validates_with Paperclip::Validate::SizeValidator, _merge_attributes(fields) | ||
end | ||
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# Adds errors if thumbnail creation fails. The same as specifying :whiny_thumbnails => true. | ||
def validates_attachment_thumbnails name, options = {} | ||
self.attachment_definitions[name][:whiny_thumbnails] = true | ||
end | ||
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# Places ActiveRecord-style validations on the presence of a file. | ||
def validates_attachment_presence(*fields) | ||
validates_with Paperclip::Validate::RequiredFieldValidator, _merge_attributes(fields) | ||
end | ||
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# Places ActiveRecord-style validations on the content type of the file assigned. The | ||
# possible options are: | ||
# * +content_type+: Allowed content types. Can be a single content type or an array. Allows all by default. | ||
# * +message+: The message to display when the uploaded file has an invalid content type. | ||
def validates_attachment_content_type(*fields) | ||
validates_with Paperclip::Validate::ContentTypeValidator, _merge_attributes(fields) | ||
end | ||
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end | ||
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class SizeValidator < ActiveModel::EachValidator #:nodoc: | ||
#def initialize(field_name, options={}) | ||
# super | ||
# attribute, @options = field_name, options | ||
#end | ||
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def validate_each(target, attribute, value) | ||
field_value = target.send(:"#{attribute}_file_size") | ||
return true if field_value.nil? | ||
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@options[:in] = (@options[:greater_than]..(1/0)) unless @options[:greater_than].nil? | ||
@options[:in] = (0..@options[:less_than]) unless @options[:less_than].nil? | ||
return true if @options[:in].include? field_value.to_i | ||
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target.errors.add(attribute, :less_than, :value => @options[:less_than]) unless @options[:less_than].nil? | ||
target.errors.add(attribute, :greater_than, :value => @options[:greater_than]) unless @options[:greater_than].nil? | ||
target.errors.add(attribute, :between, :first => @options[:in].first, :last => @options[:in].last) | ||
return false | ||
end | ||
end | ||
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class RequiredFieldValidator < ActiveModel::EachValidator #:nodoc: | ||
#def initialize(field_name, options={}) | ||
# super | ||
# attribute, @options = field_name, options | ||
#end | ||
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def validate_each(target, attribute, value) | ||
field_value = target.send(attribute) | ||
if field_value.nil? || field_value.original_filename.blank? | ||
target.errors.add(attribute, :must_be_set) | ||
return false | ||
end | ||
return true | ||
end | ||
end | ||
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class ContentTypeValidator < ActiveModel::EachValidator #:nodoc: | ||
#def initialize(field_name, options={}) | ||
# super | ||
# attribute, @options = field_name, options | ||
#end | ||
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def validate_each(target, attribute, value) | ||
valid_types = [@options[:content_type]].flatten | ||
field_value = target.send(attribute) | ||
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unless field_value.nil? || field_value.original_filename.blank? | ||
unless @options[:content_type].blank? | ||
content_type = target.send(:"#{attribute}_content_type") | ||
unless valid_types.any?{|t| t === content_type } | ||
target.errors.add(attribute, :not_a_valid_content_type,:content_type => content_type) | ||
return false | ||
end | ||
end | ||
end | ||
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return true | ||
end | ||
end | ||
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class CopyAttachmentErrors < ActiveModel::EachValidator #:nodoc: | ||
def validate_each(target, attribute, value) | ||
field_value = target.send(attribute) | ||
unless field_value.nil? || field_value.original_filename.blank? | ||
return true if field_value.errors.length == 0 | ||
field_value.errors.each { |error| target.errors.add(attribute, error.first, :message => error.last.join(", ")) } | ||
return false | ||
end | ||
return true | ||
end | ||
end | ||
end | ||
end | ||
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