Module: Shrine::InstanceMethods

Included in:
Shrine
Defined in:
lib/shrine.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#storage_key ⇒ Object (readonly)

The symbol identifier for the storage used by the uploader.



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# File 'lib/shrine.rb', line 183

def storage_key
  @storage_key
end

Instance Method Details

#extract_metadata(io) ⇒ Object

Extracts filename, size and MIME type from the file, which is later accessible through UploadedFile#metadata.



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# File 'lib/shrine.rb', line 232

def extract_metadata(io, **)
  {
    "filename"  => extract_filename(io),
    "size"      => extract_size(io),
    "mime_type" => extract_mime_type(io),
  }
end

#generate_location(io, metadata: {}) ⇒ Object

Generates a unique location for the uploaded file, preserving the file extension. Can be overriden in uploaders for generating custom location.



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# File 'lib/shrine.rb', line 226

def generate_location(io, metadata: {}, **)
  basic_location(io, metadata:)
end

#initialize(storage_key) ⇒ Object

Accepts a storage symbol registered in Shrine.storages.

Shrine.new(:store)


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# File 'lib/shrine.rb', line 188

def initialize(storage_key)
  @storage_key = storage_key.to_sym

  storage # ensure storage is registered
end

#opts ⇒ Object

The class-level options hash. This should probably not be modified at the instance level.



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# File 'lib/shrine.rb', line 242

def opts
  self.class.opts
end

#storage ⇒ Object

Returns the storage object referenced by the identifier.



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# File 'lib/shrine.rb', line 195

def storage
  self.class.find_storage(storage_key)
end

#upload(io) ⇒ Object

The main method for uploading files. Takes an IO-like object and an optional context hash (used internally by Shrine::Attacher). It calls user-defined #process, and afterwards it calls #store. The io is closed after upload.

uploader.upload(io)
uploader.upload(io, metadata: { "foo" => "bar" })           # add metadata
uploader.upload(io, location: "path/to/file")               # specify location
uploader.upload(io, upload_options: { acl: "public-read" }) # add upload options


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# File 'lib/shrine.rb', line 208

def upload(io, **)
  _enforce_io(io)

  metadata = get_metadata(io, **)
  location = get_location(io, **, metadata:)

  _upload(io, **, location:, metadata:)

  self.class::UploadedFile.new(
    id:       location,
    storage:  storage_key,
    metadata: metadata,
  )
end