public function postPage(Request $request)
 {
     //echo '<pre>',print_r($request->all()),'</pre>';
     $chk = Content::where('content_type', $request->input('content_type'))->first();
     $content = $chk ? $chk : new Content();
     $content->content_subject = $request->input('content_subject');
     $content->content_description = $request->input('seo_description');
     $content->content_detail = $request->input('content_detail');
     $content->content_type = $request->input('content_type');
     $content->save();
     $cseo = Seo::where('ref_id', $content->id)->where('seo_type', $content->content_type)->first();
     $seo = $cseo ? $cseo : new Seo();
     $seo->title = $request->input('seo_title');
     $seo->keywords = $request->input('seo_keywords');
     $seo->description = $request->input('seo_description');
     $seo->ref_id = $content->id;
     $seo->seo_type = $content->content_type;
     $seo->save();
     return redirect()->back();
 }