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.
# File lib/dm-paperclip/validations.rb, line 30 def validates_attachment_content_type(*fields) validators.add(Paperclip::Validate::ContentTypeValidator, *fields) end
Places ActiveRecord-style validations on the geometry of the file assigned. The required options are:
height: a Range of pixels (i.e. 100..300+),
width: a Range of pixels (i.e. 100..300+)
# File lib/dm-paperclip/validations.rb, line 38 def validates_attachment_geometry(*fields) validators.add(Paperclip::Validate::GeometryValidator, *fields) end
Places ActiveRecord-style validations on the presence of a file.
# File lib/dm-paperclip/validations.rb, line 22 def validates_attachment_presence(*fields) validators.add(Paperclip::Validate::RequiredFieldValidator, *fields) end
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
greater_than: equivalent to :in => options..Infinity
message: error message to display, use :min and :max as replacements
# File lib/dm-paperclip/validations.rb, line 12 def validates_attachment_size(*fields) validators.add(Paperclip::Validate::SizeValidator, *fields) end
Adds errors if thumbnail creation fails. The same as specifying :whiny_thumbnails => true.
# File lib/dm-paperclip/validations.rb, line 17 def validates_attachment_thumbnails name, options = {} self.attachment_definitions[name][:whiny_thumbnails] = true end
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