mastodon/app/models/media_attachment.rb

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class MediaAttachment < ApplicationRecord
IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif']
VIDEO_MIME_TYPES = ['video/webm']
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belongs_to :account, inverse_of: :media_attachments
belongs_to :status, inverse_of: :media_attachments
has_attached_file :file, styles: lambda { |f| f.instance.image? ? { small: '510x680>' } : { small: { convert_options: { output: { vf: 'scale="min(510\, iw):min(680\, ih)":force_original_aspect_ratio=decrease' } }, format: 'png', time: 1 } } }, processors: lambda { |f| f.video? ? [:transcoder] : [:thumbnail] }
validates_attachment_content_type :file, content_type: IMAGE_MIME_TYPES + VIDEO_MIME_TYPES
validates_attachment_size :file, less_than: 4.megabytes
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validates :account, presence: true
def local?
self.remote_url.blank?
end
def file_remote_url=(url)
self.file = URI.parse(url)
end
def image?
IMAGE_MIME_TYPES.include? file_content_type
end
def video?
VIDEO_MIME_TYPES.include? file_content_type
end
def type
image? ? 'image' : 'video'
end
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end