photos_controller.rb

#   Copyright (c) 2010, Diaspora Inc.  This file is
#   licensed under the Affero General Public License version 3.  See
#   the COPYRIGHT file.

class PhotosController < ApplicationController
  before_filter :authenticate_user!

  respond_to :html
  respond_to :json, :only => :show

  def create
    album = Album.find_by_id params[:album_id]
    begin

      ######################## dealing with local files #############
      # get file name
      file_name = params[:qqfile]
      # get file content type
      att_content_type = (request.content_type.to_s == "") ? "application/octet-stream" : request.content_type.to_s
      # create temporal file
      begin
        file = Tempfile.new(file_name, {:encoding =>  'BINARY'})
        file.print request.raw_post.force_encoding('BINARY')
      rescue RuntimeError => e
        raise e unless e.message.include?('cannot generate tempfile')
        file = Tempfile.new(file_name) # Ruby 1.8 compatibility
        file.print request.raw_post
      end
      # put data into this file from raw post request

      # create several required methods for this temporal file
      Tempfile.send(:define_method, "content_type") {return att_content_type}
      Tempfile.send(:define_method, "original_filename") {return file_name}

      ##############

      params[:user_file] = file

      data = clean_hash(params)

      @photo = current_user.post(:photo, data)

      respond_to do |format|
        format.json{render(:layout => false , :json => {"success" => true, "data" => @photo}.to_json )}
      end

    rescue TypeError
      message = I18n.t 'photos.create.type_error'
      respond_with :location => album, :error => message

    rescue CarrierWave::IntegrityError
      message = I18n.t 'photos.create.integrity_error'
      respond_with :location => album, :error => message

    rescue RuntimeError => e
      message = I18n.t 'photos.create.runtime_error'
      respond_with :location => album, :error => message
      raise e
    end
  end

  def new
    @photo = Photo.new
    @album = current_user.album_by_id(params[:album_id])
    render :partial => 'new_photo'
  end

  def destroy
    @photo = current_user.find_visible_post_by_id params[:id]

    @photo.destroy
    flash[:notice] = I18n.t 'photos.destroy.notice'
    respond_with :location => @photo.album
  end

  def show
    @photo = current_user.find_visible_post_by_id params[:id]
    @album = @photo.album
    respond_with @photo, @album
  end

  def edit
    @photo = current_user.find_visible_post_by_id params[:id]
    @album = @photo.album

    redirect_to @photo unless current_user.owns? @album
  end

  def update
    @photo = current_user.find_visible_post_by_id params[:id]

    data = clean_hash(params)

    if current_user.update_post( @photo, data[:photo] )
      flash[:notice] = I18n.t 'photos.update.notice'
      respond_with @photo
    else
      flash[:error] = I18n.t 'photos.update.error'
      render :action => :edit
    end
  end

  private
  def clean_hash(params)
    if params[:photo]
      return {
        :photo => {
          :caption   => params[:photo][:caption],
        }
      }
    else
      return{
        :album_id  => params[:album_id],
        :user_file => params[:user_file]
      }
    end
  end

end