Contents

module PushType
  class Asset < ActiveRecord::Base

    include PushType::Trashable

    dragonfly_accessor :file

    belongs_to :uploader, class_name: 'PushType::User'

    validates :file, presence: true

    default_scope { order(created_at: :desc) }

    scope :image,     -> { where(['mime_type LIKE ?', 'image/%']) }
    scope :not_image, -> { where(['mime_type NOT LIKE ?', 'image/%']) }

    before_create :set_mime_type
    after_destroy :destroy_file!

    def kind
      return nil unless file_stored?
      case mime_type
        when /\Aaudio\/.*\z/ then :audio
        when /\Aimage\/.*\z/ then :image
        when /\Avideo\/.*\z/ then :video
        else :document
      end
    end

    [:audio, :image, :video].each do |k|
      define_method("#{k}?".to_sym) { kind == k }
    end

    def description_or_file_name
      description? ? description : file_name
    end

    def media(style = nil)
      return file if !image? || style.blank?

      case style.to_sym
        when :original        then file
        when :push_type_thumb then preview_thumb
        else
          size = PushType.config.media_styles[style.to_sym] || style
          file.thumb(size)
      end
    end

    def preview_thumb(size = '300x300')
      return unless image?

      width, height = size.split('x').map(&:to_i)

      if file.width >= width && file.height >= height
        file.thumb("#{ size }#")
      else
        file.convert("-background white -gravity center -extent #{ size }")
      end
    end

    private

    def set_mime_type
      self.file_ext   = file.ext
      self.mime_type  = file.mime_type
    end

    def destroy_file!
      self.file.destroy!
    end

  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
push_type_core-0.3.1	app/models/push_type/asset.rb
push_type_core-0.2.1	app/models/push_type/asset.rb
push_type_core-0.2.0	app/models/push_type/asset.rb
push_type_core-0.2.0.beta2	app/models/push_type/asset.rb