Module: Cul::Hydra::Controllers::Datastreams

Extended by:
ActiveSupport::Concern
Defined in:
lib/cul_hydra/controllers/datastreams.rb

Instance Method Summary collapse

Instance Method Details

#create ⇒ Object

Creates and Saves a Datastream to contain the the Uploaded file



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# File 'lib/cul_hydra/controllers/datastreams.rb', line 42

def create
  if params[:asset_id].nil?
    raise "Cannot created a datastream without a containing object"
  else
    @container =  ActiveFedora::Base.load_instance(params[:asset_id])
  end

  if params[:id].nil?
    raise "Cannot created a datastream without a datastream id"
  end

  if params.has_key?(:Filedata)
    file_name = filename_from_params
    mime_type = params[:mime_type] || mime_type(file_name)
    @container.add_file_datastream(posted_file, :dsid=>params[:id], :label=>file_name, :mimeType=>mime_type, :size=>posted_file.size)
    @container.save
    # apply_depositor_metadata(@file_asset)
  
    flash[:notice] = "The file #{params[:Filename]} has been saved as #{params[:datastream_id]} in <a href=\"#{asset_url(@container.pid)}\">#{@container.pid}</a>."
          
    ## Apply any posted file metadata
    unless params[:asset].nil?
     # logger.debug("applying submitted file metadata: #{@sanitized_params.inspect}")
     # apply_file_metadata
    end
    # If redirect_params has not been set, use {:action=>:index}
    logger.debug "Created #{@container.pid}##{params[:datastream_id]}."
  elsif params.has_key?(:Source)
    file_name = filename_from_url(params[:Source])
    mime_type = params[:mime_type] || mime_type(file_name)
    ds_props = {:dsid=>params[:id], :label=>file_name, :mimeType=>mime_type, :dsLocation=>params[:Source]}
    @container.add_datastream(ActiveFedora::Datastream.new(ds_props))
    @container.save
  
    flash[:notice] = "#{params[:Source]} has been saved as #{params[:datastream_id]} in <a href=\"#{asset_url(@container.pid)}\">#{@container.pid}</a>."
  else
    flash[:notice] = "You must specify a file to upload or a source URL."
  end
  
  unless params[:container_id].nil?
    redirect_params = {:controller=>"catalog", :id=>params[:asset_id], :action=>:edit}
  end
  
  redirect_params ||= {:action=>:index}
  
  redirect_to redirect_params
end

#destroy ⇒ Object

Datastream destroy method



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# File 'lib/cul_hydra/controllers/datastreams.rb', line 91

def destroy
  @container = ActiveFedora::Base.load_instance(params[:asset_id])
  @container.datastreams[params[:datastream_id]].delete
  render :text => "Deleted #{params[:datastream_id]} from #{params[:asset_id]}."
  # Does the index need to be updated on delete here?
  @container.save
end

#index ⇒ Object 



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# File 'lib/cul_hydra/controllers/datastreams.rb', line 17

def index
  if params[:layout] == "false"
    # action = "index_embedded"
    layout = false
  end
  unless params[:asset_id].nil?
    
    # Including this line so permissions tests can be run against the container
    @container_response, @document = get_solr_response_for_doc_id(params[:asset_id])
    
    # Including these lines for backwards compatibility (until we can use Rails3 callbacks)
    @container =  ActiveFedora::Base.load_instance(params[:asset_id])
    @ds = @container.datastreams(params[:id])
  else
    # What are we doing here without a containing object?
    raise "called DatastreamsController#index without containing object"
  end
  render :action=>params[:action], :layout=>layout
end

#new ⇒ Object 



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# File 'lib/cul_hydra/controllers/datastreams.rb', line 37

def new
  render :partial=>"new", :layout=>false
end

#show ⇒ Object 



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# File 'lib/cul_hydra/controllers/datastreams.rb', line 103

def show
  @container = ActiveFedora::Base.find(params[:asset_id])
  if (@container.nil?)
    logger.warn("No such fedora object: " + params[:asset_id])
    flash[:notice]= "No such fedora object."
    redirect_to(:action => 'index', :q => nil , :f => nil)
    return
  else
    # get array of parent (container) objects for this FileAsset
    @downloadable = false
    # A FileAsset is downloadable iff the user has read or higher access to a parent
    @response, @document = get_solr_response_for_doc_id(params[:asset_id])
    if reader?
      @downloadable = true
    end

    if @downloadable
      if @container.datastreams_in_memory.include?(params[:id])
        ds = @container.datastreams_in_memory[params[:id]]
        opts = {:filename => ds.label}
        if params[:mime_type].nil?
          opts[:type] = ds.attributes["mimeType"]
        else
          opts[:type] = params[:mime_type]
        end
        if params[:disposition].nil?
          opts[:disposition] = "attachment"
        else
          opts[:disposition] = params[:disposition]
        end
        logger.debug opts.inspect
        send_data ds.content, opts
        return
      end
    else
      flash[:notice]= "You do not have sufficient access privileges to download this document, which has been marked private."
      redirect_to(:action => 'index', :q => nil , :f => nil)
      return
    end
  end
end

#update ⇒ Object 



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# File 'lib/cul_hydra/controllers/datastreams.rb', line 99

def update
  self.create
end