Class: LadyJosephine::ImageUploader

Inherits:
BaseUploader
  • Object
show all
Defined in:
app/uploader/lady_josephine/image_uploader.rb

Instance Method Summary collapse

Methods inherited from BaseUploader

#auto_orient, #compress_to_fill, #compress_to_fit, #store_dir, #strip

Instance Method Details

#add_metadata(image) ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 4

def add_metadata(image)
  @version_metadata = metadata_entry(image[:dimensions], image[:size])
end

#collect_metadata ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 51

def collect_metadata
  if version_name.nil?
    original_filename.present? ? collect_metadata_from_upload : collect_metadata_from_model
  else
    model.send(mounted_as).metadata
  end

end

#collect_metadata_from_cache(json_data) ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 76

def collect_metadata_from_cache(json_data)
  HashWithIndifferentAccess.new(JSON.parse(json_data))
end

#collect_metadata_from_model ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 67

def collect_metadata_from_model
  metadata_column = "#{mounted_as}_metadata"
  if model.respond_to?(metadata_column) && (json_data = model.send metadata_column).present?
    collect_metadata_from_cache(json_data)
  else
    collect_metadata_from_version_names
  end
end

#collect_metadata_from_upload ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 60

def collect_metadata_from_upload
  versions.inject(HashWithIndifferentAccess.new) do |metadata, (key,version_data)|
    metadata[key] = version_data.version_metadata
    metadata
  end
end

#collect_metadata_from_version_names ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 80

def collect_metadata_from_version_names
  versions.inject(HashWithIndifferentAccess.new) do |metadata, (key,version_data)|
    metadata[key] = dummy_version_metadata(key)
    metadata
  end
end

#dummy_version_metadata(version_name) ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 25

def dummy_version_metadata(version_name)
  metadata_entry([width_from_version_name(version_name),width_from_version_name(version_name)],1000)
end

#dynamic_version(version) ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 113

def dynamic_version(version)
  LadyJosephine.image_sizes[version].each do |method, args|
    self.send method, *args
  end
end

#extension_white_list ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 119

def extension_white_list
  %w(jpg jpeg gif png)
end

#metadata ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 47

def metadata
  @metadata ||= collect_metadata
end

#metadata_entry(dimensions, size) ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 8

def metadata_entry(dimensions, size)
  data = HashWithIndifferentAccess.new
  data['width']  = dimensions[0]
  data['height'] = dimensions[1]
  data['size']   = size / 1000
  data['ratio']  = ratio data['width'], data['height']
  data
end

#ratio(width, height) ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 17

def ratio(width, height)
  (width.to_f / height.to_f).round(2)
end

#srcset(options = {}) ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 33

def srcset(options = {})
  src_versions = [options[:only]].reject(&:blank?).flatten.empty? ? versions.keys{|version| version =~ /^w\d+$/ } : [options[:only]].flatten
  src_versions = src_versions - [options[:except]].flatten

  src_versions.collect do |version, version_data|
    srcset_string url(version), metadata[version]['width']
  end.reject(&:blank?).join(", ")
end

#srcset_string(url, width) ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 29

def srcset_string(url, width)
  "#{url} #{width}w"
end

#version_metadata ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 21

def version_metadata
  @version_metadata || dummy_version_metadata(version_name)
end

#width_from_version_name(version_string) ⇒ Object 



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# File 'app/uploader/lady_josephine/image_uploader.rb', line 42

def width_from_version_name(version_string)
  version_string.to_s.sub(/\D*(\d+)\D*/,'\1').to_i
end