Class: ActiveAdmin::JfuUpload::Engine

Inherits:
Rails::Engine
  • Object
show all
Defined in:
lib/activeadmin/jfu_upload/engine.rb

Class Method Summary collapse

Class Method Details

.upload_file(request, param, resource, field) ⇒ Object 



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# File 'lib/activeadmin/jfu_upload/engine.rb', line 9

def upload_file( request, param, resource, field )
  response = { result: 0 }
  if !param.blank?
    if request.headers['CONTENT-RANGE'].blank?
      resource.update field => param
      response = { result: 1, file_name: resource.try( field ).try( :url ) }
    else
      m = request.headers['CONTENT-RANGE'].match( /[^\s]+\s(\d+)-(\d+)\/(\d+)/ )
      if m
        buffer = param.read
        pos = m[1].to_i
        if pos == 0
          # resource.update field => param
          dir = Rails.root.join('tmp', 'uploads')
          dir.mkdir unless File.exists?(dir)
          field_data = { original_filename: param.original_filename, tempfile: dir.join(param.tempfile).to_s }  # alternative: "#{resource.class.to_s.tableize}_#{resource.id}_#{Time.now.to_i}"
          resource.update_column field, YAML::dump( field_data )
        else
          field_data = YAML::load resource.read_attribute(field)
          # File.open( resource.try( field ).try( :path ), 'ab' ) { |f| f.write( buffer ) }
        end
        File.open(field_data[:tempfile], 'ab') { |f| f.write(buffer) }
        if ( m[2].to_i + 1 ) == m[3].to_i
          path = Pathname.new field_data[:tempfile]
          dst = path.dirname.join(field_data[:original_filename]).to_s
          File.rename(field_data[:tempfile], dst)
          resource.send("#{field}=", File.open(dst))
          resource.save
          response = { result: 1, pos: m[3].to_i, file_name: resource.try(field).try(:url) }
        else
          response = { result: 2, position: pos }
        end
      end
    end
  end
  response
end