nokogiri - refactoring Ruby scraping code -

-

Actually, I have multiple .main_entry blocks on each page and I get data from each one How can some pieces of this be properly re-implemented? 'Open-yuri' is required 'nautygri' url = #url doc = Nokogiri :: HTML (open (url) doc.css (". Main_entry"). Text = "item_at_css" (".list_artist"). Text title = item.at_css ("list_album"). Text "# {artist} - # {title}" closing

I have come down to this disturbance, which removes undefined local variable or method 'release' error < / code> error is written more than the methods. Can you explain to me how the code given below is done, why it breaks down and what should I do to decide? Should each .main_entry block be saved before saving in a cache or an array? 

  Requires 'Open-Yuri' requires a 'nautguri' class Scraper def initialize (url) @url = url end def release @release || = Doc.css (". Main_entry") || [] End-release text end-defined _method (title:) @title || = Item.at_css (".list_album"). End of text ending personal attr_reader: url def doc @doc || = Nocogiri :: HTML (open (url)) and end scrapper = scrapper.New (# ur) "# {scrapper cartist} - # {scrapar}}" -   
  is required 'Open-Yuri' is required 'pre-> Nokogiri' class scrap release attr_reader: item def start (item) @item = item end DEF artist @ artist || = Item.at_css (".list_artist"). Text end DEF title @ title || = Item.at_css ("list_album") .text end end class scraper def initialize (url) @url = url end def release @releases || = (Doc.css (". Main_entry") || []). Map {| Item | ScrapedRelease.new (  
 Then you can do this:  
   Scraper.new (url) .releases.each do | release | Puts "# {release.artist} - # {release.ti Tle}" end

Comments

Post a Comment

Popular posts from this blog

php - PDO bindParam() fatal error -

-
I am trying to learn PDO, now I have written this small code, but it gives me a serious error: < P> Fatal error: Call a member function at a non-object dot () ... $ con = new mysqli ("127.0.0.1", "root", "", "csvdangercheck"); $ Query = $ con- & gt; ("Id,` var1`, `var2`) values ​​(" id,: var1,: var2) ";); $ query- & gt; bypass pattern (': id', $ id); $ query- & gt; BindParam (': var1', $ VAL1); $ Query- & gt; bindParam (': var2', $ val2); $ Query-> Executed (); I Trying to use print_r ($ con-> errorInfo ()) but Fatal error: Undefined method mysqli :: errorInfo ( ) ... can someone tell me what am I missing? Flaffeh said, you have PDO Missing Mysqy, try it: $ con = new PDO ('mysql: host = 127.0.0.1; dbname = csvdangercheck', 'root', '');
Read more

logging - How can I log both the Request.InputStream and Response.OutputStream traffic in my ASP.NET MVC3 Application for specific Actions? -

-
For a specific set of tasks, I need to log in to the incoming request inputstream as well as outgoing response. is. I am using an ActionFilterAttribute for this and overriding the OnActionExecuted and OnResultExecuted methods. So I'm starting with this idea ... Public category ActionLoggerAttribute: ActionFilterArrbit {Public Override Zero On-Offed Execution (ActionActioned Contact Filter Filter) {base.OnActionAxecuted (FilterContext); HttpRequestBase request = filterContext.HttpContext.Request; // TODO: Log the request. InputStream} Public Override Zero OnResultExecuted (ResultExecutedContext FilterContext) {base.OnResultExecuted (filterContext); HTTPRPSPointBase Response = FilterContacts Hpptex response; // TODO: Log on Response.OutputStream}} Ideally I'll hook it up with enterprise library logging because I'm already using it for error logging. Am I reaching the input and output stream at the right time? Can I easily use the Enterprise Library to log i
Read more

java - Why my included JSP file won't get processed correctly? -

-
I am trying to create Java web framework (and learning), and on the basis of 'Code Generator In the process of making the material view of the database in the process of development, I stumbled into a difficulty, which I do not know how to solve it. First of all, I want the following index.jsp : & lt; Body & gt; Use all pages to be created. & Lt;% @ include file = "header.jsp"% & gt; & Lt; Hours / & gt; & Lt;% @ included file = "body.jsp"%> & Lt; Hours / & gt; & Lt;% @ include file = "footer.jsp"% & gt; & Lt; / Body & gt; And, in body.jsp , I should have it like this: & lt; Jsp: include page = "$ {Application_modul}"%> Where application_modul is an attribute defined in its controller: request.setAttribute ("application_modul", "USER_ACCOUNT \\ ' View_user_account.jsp "); This file can be found properly, but the processed JSP does
Read more