def create    @subjection = @subject.subjections.new    if params[:video_or_show_id].length == 20      show = Show.where(:showid => params[:video_or_show_id]).try(:first)      if show.present?        @show = show      else        begin          @show = Show.build_from_show_id(params[:video_or_show_id])          @subjection.subjectable_type = "show"          @subjection.subjectable_id = @show.id          @subjection.title = @show.showname          @subjection.sub_title = @show.showsubtitle          @subjection.description = @show.showdesc          @subjection.save          if @show.save            img_v = @subjection.pictures.new(:url => @show.show_vthumburl,                                             :name => "img_v")            img_v.save            img_h = @subjection.pictures.new(:url => @show.show_thumburl,                                             :name => "img_h")            img_h.save          end        rescue ArgumentError, Youku::DS::Error => e          @show = Show.new          @show.errors.add(:base, e.message)          redirect_to new_subject_subjection_path(@subject), :notice => "视频没有版权"        end      end    else      video = Video.where(:videoid => params[:video_or_show_id]).try(:first)      if video.present?        @video = video      else        begin          @video = Video.build_from_video_id(params[:video_or_show_id])          if @video.videoid.present?            @subjection.subjectable_type = "video"            @subjection.subjectable_id = @video.id            @subjection.description = @video.desc            @subjection.title = @video.title            @subjection.save            if @video.save              img_h = @subjection.pictures.new(:url => @video.thumburl,                                               :name => "img_h")              img_h.save            end          end        rescue ArgumentError, Youku::DS::Error => e          @video = Video.new          @subjection.errors.add(:base, e.message)          render :error and return        end      end    end    if @subjection.save      redirect_to subject_subjections_url(@subject), notice: ‘新建成功‘    else      render :new    end  end

def create  @subjection = @subject.subjections.build  id = params[:video_or_show_id]  subjectable = if id.length == 20                  find_or_create_show_from_show_id(id)                else                  find_or_create_video_from_video_id(id)                end  @subjection.subjectable = subjectable  if @subjection.save    redirect_to subject_subjections_url(@subject), notice: ‘新建成功‘  else    render :error  endrescue ArgumentError, Youku::DS::Error => e  @subjection.errors.add(:base, e.message)  render :errorendprivate  def find_or_create_show_from_show_id(id)    if show = Show.find_by_showid(id)      show    else      show = Show.build_from_show_id(id)      show.save      show    end  end  def find_or_create_video_from_video_id(id)    if video = Video.find_by_videoid(id)      video    else      video = Video.build_from_video_id(id)      video.save      video    end  end

def subjectable=(subjectable)  if persisted?    super  else    self.attributes = {      subjectable_type: subjectable.class.name,      subjectable_id: subjectable.id    }    case subjectable    when Show      self.attributes = {        title: subjectable.showname,        sub_title: subjectable.showsubtitle,        description: subjectable.showdesc,        pictures_attributes: [{ name: ‘img_h‘, url: subjectable.show_thumburl },                              { name: ‘img_v‘, url: subjectable.show_vthumburl }]      }    when Video      self.attributes = {        title: subjectable.title,        description: subjectable.desc,        pictures_attributes: [{ name: ‘img_h‘, url: subjectable.thumburl }]      }    else      super      end  endend