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• Facebook connect integration (registration & login)

  - by nikospkrk

  Hi, I'm really struggling to make facebook connection working for my system. What I want to do : When the user is not yet registered on facebook : Fetch some user profile fields into my database (ideqally via my registration page already working for non facebook users) Log the user into my website Redirect the user into my homepage What I've done so far : Set up the application in FB Add the Facebook class from the github website and integrate some code to make it working Add additionnal paremeters to login/register facebook link. I'm struggling to redirect the user after authorizing, to my register page (register/?facebook). The "Post-Authorize Redirect URL" field doesn't seem to work properly, I maybe do not fill the right field? My other question is, if my registration page uses a redirection show (index.php redirect to register.php), do the information given by facebook through the $_POST method would be available in the register.php page ? I don't think so, do you ? Regards, Nicolas.

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• What are people's opinions vis-a-vis my choice of authorization plugins?

  - by brad

  I'm slowly but surely putting together my first rails app (first web-app of any kind in fact - I'm not really a programmer) and it's time to set up a user registration/login system. The nature of my app is such that each user will be completely separated from each other user (except for admin roles). When users log in they will have their own unique index page looking at only their data which they and no-one else can ever see or edit. However, I may later want to add a role for a user to be able to view and edit several other user's data (e.g. a group of users may want to allow their secretary to access and edit their data but their secretary would not need any data of their own). My plan is to use authlogic to create the login system and declarative authorization to control permissions but before I embark on this fairly major and crucial task I thought I would canvas a few opinions as to whether this combo was appropriate for the tasks I envisage or whether there would be a better/simpler/faster/cheaper/awesomer option.

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• Is looping through the entityreference the correct way?

  - by Jova

  I want to get all users that have a specific role to a list of usernames. Is using .Include to include all the users, and going through the UsersReference the best way to loop through all the users that are associated with the role? I noticed I could not do a foreach(User user in role.Users) but UsersReference seem to work, but is that how it's supposed to be done? Going through the reference? using (var context = new MyEntities()) { List<string> users = new List<string>(); Role role = (from r in context.Roles.Include("Users") where r.RoleName == roleName select r).FirstOrDefault(); foreach (User user in role.UsersReference) users.Add(user.UserName); return users.ToArray(); }

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• Use eval to set unknown property in Python

  - by Mahi

  I have an User class, that has multiple properties inside it, and I also have addPoint method for User class, which allows user to input points into any of it's properties. However, there can be up to like 500 properties, everyone can have different ones, etc. So it would be a pain in the ass to code every property with "if: - elif:". Now this is what I tried to do, to make it much easier and cleaner: class User: def __init__(self): self.health = 0 self.speed = 0 def addPoint(self, property, amount): eval("self."+property) = eval("self."+property) + amount And now when I'd do fe. u = User() u.addPoint("health", 5) I would like it to do this: self.health = self.health + 5, and that's what I used the eval()s for. However, Python's just giving me error: can't assign to function call. I'm not trying to assign the eval() function call itself, I'm trying to assign the returned value from eval(), so how could I do this the easiest way?

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• Regexing it up with IIS re-write module

  - by Michael Jasper

  I am developing a profile-based web application where each user is assigned there own url through their username & iis rewrite mod's magic. A typical user's profile url would be http://www.mymark.com/mike Each user is also created a blog in a multi-user wordpress installation. The wordpress url would look like this: http://www.mymark.com/blog/mike I am trying to use the rewrite module to create more canonical urls for the user (http://www.mymark.com/mike/blog), and have tried several regex variations that I have created through RegExr(a regex generation tool) and come up with this as the pattern to match (www.|)mymark.com/([^/]+)/blog but haven't had any success so far. What am I doing wrong here? Here is a screen shot of my re-write rule:

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• Rails 3 nested forms with has_many :through, entry in join table dosen't get deleted after update

  - by Hadi S.

  Hi, i have a 'User' model which has a has_many relationship to a 'Number' model through a join table 'user_number' model. I use accepts_nested_attributes_for :numbers, :allow_destroy = true in the 'User' model. Everything works fine except that whenever i delete a number from a user in the edit form, the associated number is deleted correctly in the 'number' table, but not the entry in the 'user_number' join table. In the update controller action i only use this: ... if @user.update_attributes(params[:user]) ... How can i force rails to also delete the associated entry in the join table?

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• Question on Win32 LogonUser API and the Logon Type

  - by Lalit_M

  We have developed a ASP.NET web application and has implemented a custom authentication solution using active directory as the credentials store. Our front end application uses a normal login form to capture the user name and password and leverages the Win32 LogonUser method to authenticate the user’s credentials. When we are calling the LogonUser method, we are using the LOGON32_LOGON_NETWORK as the logon type. The issue we have found is that user profile folders are being created under the C:\Users folder of the web server. The folder seems to be created when a new user who has never logged on before is logging in for the first time. As the number of new users logging into the application grows, disk space is shrinking due to the large number of new user folders getting created. Has anyone seen this behavior with the Win32 LogonUser method? Does anyone know how to disable this behavior?

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• how do i claim a low-numbered port as non-root the "right way"

  - by qbxk

  I have a script that I want to run as a daemon listening on a low-numbered port (< 1024) Script is in python, though answers in perl are also acceptable. The script is being daemonized using start-stop-daemon in a startup script, which may complicate the answer What I really (think) don't want is to type ps -few and see this process running with a "root" on it's line. How do I do it? ( from my less-than-fully-educated-about-system-calls perspective, I can see 3 avenues, Run the script as root (no --user/--group/--chuid to start-stop-daemon), and have it de-escalate it's user after it claims the port Setuid root on the script (chmod u+s), and run the script as the running user, (via --user/--group/--chuid to start-stop-daemon, the startup script still has to be called as root), in the script, acquire root privileges, claim the port, and then revert back to normal user something else i'm unaware of )

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• Passing an array into hidden_field ROR

  - by JZ

  I'm trying to pass an array into a hidden_field. The following User has 3 roles [2,4,5] >> u = User.find_by_login("lesa") => #<User id: 5, login: "lesa", email: "[email protected]", crypted_password: "0f2776e68f1054a2678ad69a3b28e35ad9f42078", salt: "f02ef9e00d16f1b9f82dfcc488fdf96bf5aab4a8", created_at: "2009-12-29 15:15:51", updated_at: "2010-01-06 06:27:16", remember_token: nil, remember_token_expires_at: nil> >> u.roles.map(&:id) => [2, 4, 5] Users/edit.html.erb <% form_for @user do |f| -%> <%= f.hidden_field :role_ids, :value => @user.roles.map(&:id) %> When I submit my edit form, I receive an error: ActiveRecord::RecordNotFound in UsersController#update "Couldn't find Role with ID=245" How can I pass an array into the hidden_field?

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• declarative authorization and has_and_belongs_to_many

  - by Michael Balsiger

  Hi, I have a little problem with declarative-authorization. I have a User and Role Model with a has_and_belongs_to_many association. I've created a Role named :moderator in my authorization_rules.rb Is it possible that a User with the Role Moderator only gets the Users that have the Moderator Role assigned to it?? -- User.with_permissions_to(:index) I thought it would be possible like that: role :moderator do has_permission_on :users, :to => :index do if_attribute :roles => contains { ????? } end end I also created a named_scope in my User Model because I thought it would help... class User has_and_belongs_to_many :roles named_scope :by_role, lambda { |role| { :include => :roles, :conditions => {"roles.name" => role} } } end Does anyone knows if it's possible to do this with declarative_authorization? Thanks for your help!

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• Batch update records in Grails

  - by UltraVi01

  I have to calculate a "total" for each user based on individual actions -- that is, a User hasMany Actions and each Action has a point. So I need to basically get a sum of all the points on all the actions. Actions are added and subtracted regularly. Since this can be a rather heavy operation, it's not feasible that I execute the "total" each time I need it. Therefore, I am thinking of running the operation once a day for each user and storing the total points on the User as an int. Because I have thousands of users, I am trying to figure out the best way to do this. Should I basically iterate through all the users and call User.save() each time, or is there some kind of batch update mechanism I can use in Grails / GORM?

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• Object reference error even when object is not null

  - by Shrewd Demon

  hi, i have an application wherein i have incorporate a "Remember Me" feature for the login screen. I do this by creating a cookie when the user logs in for the first time, so next time when the user visits the site i get the cookie and load the user information. i have written the code for loading user information in a common class in the App_Code folder...and all my pages inherit from this class. code for loading the user info is as follows: public static void LoadUserDetails(string emailId) { UsersEnt currentUser = UsersBL.LoadUserInfo(emailId); if (currentUser != null) HttpContext.Current.Session["CurrentUser"] = currentUser; } Now the problem is i get an "Object reference" error when i try to store the currentUser object in the session variable (even though the currentUser object is not null). However the password property in the currentUser object is null. Am i getting the error because of this...or is there some other reason?? thank you

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• Reset UITextField's original placeholder text

  - by Michael

  I'm adding some user feedback mechanism into my app. The user types some comments into a text field and when that editing is done it updates a UITextView. Then when the user hits the submit button and moves on in the app the user may have need to send more feedback from the same form for a different item. I can reset the other fields and labels in the app to their default values when I hide the view, but not the textField (?). How can I reestablish the placeholder text next time the user accesses this view? Your suggestions are humbly appreciated.

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• Which web Tier Framework for a public commercial website with heavy load ?

  - by Maxime ARNSTAMM

  Hello everyone, As a part of an enterprise architecture exercise, i need to find a java-based framework filling these constraints : heavy (i think) load : 5000 concurrent connections widely known : can't be too exotic, the contractors would be too high priced. relatively easy to use : developpement time must be reasonnable must be as compliant as possible with the css/html layout produced by a designer Must look like "web 2.0" from the marketing point of view. What i learned from my limited experience is : jsf : 1, don't know. 2, 3 ok. 4 not ok (at least not without huge effort) wicket : 1, not really. 2, 3 and 4 ok. gwt : 1, don't know. 2, 3 ok. 4 not ok (but more ok than jsf) others : not really "web 2.0" or not really known I'm really junior, so my ideas about those frameworks are probably wrong, that's why i come to you, stackoverflowees. Thanks for helping :)

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• Does Hibernate's GenericGenerator cause update and saveOrUpdate to always insert instead of update?

  - by Derek Mahar

  When using GenericGenerator to generate unique identifiers, do Hibernate session methods update() and saveOrUpdate() always insert instead of update table rows, even when the given object has an existing identifier (where the identifier is also the table primary key)? Is this the correct behaviour? public class User { private String id; private String name; public User(String id, String name) { this.id = id; this.name = name; } @GenericGenerator(name="generator", strategy="guid")@Id @GeneratedValue(generator="generator") @Column(name="USER_ID", unique=true, nullable=false) public String getId() { return this.id; } public void setId(String id) { this.id = id; } @Column(name="USER_NAME", nullable=false, length=20) public String getUserName() { return this.userName; } public void setUserName(String userName) { this.userName = userName; } } class UserDao extends AbstractDaoHibernate { public void updateUser(final User user) { HibernateTemplate ht = getHibernateTemplate(); ht.saveOrUpdate(user); } }

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• Linq to SQL Where clause based on field selected at runtime

  - by robasaurus

  I'm trying to create a simple reusable search using LINQ to SQL. I pass in a list of words entered in a search box. The results are then filtered based on this criteria. private IQueryable<User> BasicNameSearch(IQueryable<User> usersToSearch, ICollection<string> individualWordsFromSearch) { return usersToSearch .Where(user => individualWordsFromSearch.Contains(user.Forename.ToLower()) || individualWordsFromSearch.Contains(user.Surname.ToLower())); } Now I want this same search functionality on a different datasource and want to dynamically select the fields to apply the search to. For instance instead of IQueryable of Users I may have an IQueryable of Cars and instead of firstname and surname the search goes off Make and Model. Basically the goal is to reuse the search logic by dynamically selecting what to search on at runtime.

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• Constructing T-SQL WHERE condition at runtime

  - by Nickson

  I would like to implement a search function where a user passes all the arguments to the "WHERE" clause at runtime. For example in query below, SELECT Col1, Col2, Col3, Col4 FROM MyTable WHERE Col2 = John 1.Now what i want is to give the user a dropdownlist of columnns such that the user selects a column to search by at runtime Also instead of precoding Col2 = John, i want the user to choose their own operator at runtime(such as choosing between =, <, <, <, LIKE, IN) i basically want to contruct a query like SELECT Col1, Col2, Col3, Col4 FROM MyTable WHERE (@FieldToSearchBy e.g Col3, @OperatorToUserInSearach e.g LIKE, @ValueToSearch e.g John) I want to pass @FieldToSearchBy, @OperatorToUserInSearach, @ValueToSearch) as user specified parameters at runtime I want to do this with a TableAdpter like in this example http://www.codeproject.com/KB/database/TableAdapter.aspx

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• What does this do and why does it require a transaction?

  - by S. Palin

  What does the following code example do and why does it require a transaction? // PersistenceManager pm = ...; Transaction tx = pm.currentTransaction(); User user = userService.currentUser(); List<Account> accounts = new ArrayList<Account>(); try { tx.begin(); Query query = pm.newQuery("select from Customer " + "where user == userParam " + "parameters User userParam"); List<Customer> customers = (List<Customer>) query.execute(user); query = pm.newQuery("select from Account " + "where parent-pk == keyParam " + "parameters Key keyParam"); for (Customer customer : customers) { accounts.addAll((List<Account>) query.execute(customer.key)); } } finally { if (tx.isActive()) { tx.rollback(); } }

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• Inserting the record into Data Base through JPA

  - by vinay123

  In my code I am using JSF - Front end , EJB-Middile Tier and JPA connect to DB.Calling the EJB using the Webservices.Using MySQL as DAtabase. I have created the Voter table in which I need to insert the record. I ma passing the values from the JSF to EJB, it is working.I have created JPA controller class (which automatcally generates the persistence code based on the data base classes) Ex: getting the entity manager etc., em = getEntityManager(); em.getTransaction().begin(); em.persist(voter); em.getTransaction().commit(); I have created the named query also: @NamedQuery(name = "Voter.insertRecord", query = "INSERT INTO Voter v values v.voterID = :voterID,v.password = :password,v.partSSN = :partSSN,v.address = :address, v.zipCode = :zipCode,v.ssn = :ssn, v.vFirstName = :vFirstName,v.vLastName = :vLastName,v.dob = :dob"),But still not able to insert the record? Can anyone help me in inserting the record into the Data base through JPA.(Persistence object)?

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• Rails: Accessing the username/password used for HTTP Basic Auth?

  - by Shpigford

  I'm building a basic API where user information can be retrieved after that user's login and password are correctly sent. Right now I'm using something like this: http://foo:[email protected]/api/user.xml So, what I need to do is access the user/password sent in the request (the foo and bar) but am not sure how to access that info in a Rails controller. Then I'd check those variables via a quick User.find and then set those as the username and password variables for authenticate_or_request_with_http_basic. It's possible I'm looking at this at the completely wrong way, but that's where I'm at right now. :)

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• How to add JSTL to Maven?

  - by La Chamelle

  I'm working on a JSF 2.0 project using Mojarra, PrimeFaces and Tomcat 6.x. I need to use c:forEach for some primefaces component like dynamic number of p:tab but i have problem with the c:forEach. All the other tag of JSTL work nice. I have the following error : java.lang.NoClassDefFoundError: javax/servlet/jsp/jstl/core/LoopTagStatus I use the following xmlns:c="http://java.sun.com/jsp/jstl/core", i tried to replace with xmlns:c="http://java.sun.com/jstl/core" but nothing display with the second. This is the exact version of lib: <dependency> <groupId>javax.faces</groupId> <artifactId>jsf-api</artifactId> <version>2.0.2-FCS</version> </dependency> <dependency> <groupId>com.sun.faces</groupId> <artifactId>jsf-impl</artifactId> <version>2.0.4-b03</version> </dependency> <dependency> <groupId>org.primefaces</groupId> <artifactId>primefaces</artifactId> <version>2.2.1</version> </dependency> <dependency> <groupId>javax.el</groupId> <artifactId>el-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>org.glassfish.web</groupId> <artifactId>el-impl</artifactId> <version>2.2</version> </dependency> How i can fix it ? I can give more specific information if needed.

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• GROUP BY as a way to pick the first row from a group of similar rows, is this correct, is there any

  - by FipS

  I have a table which stores test results like this: user | score | time -----+-------+------ aaa | 90% | 10:30 bbb | 50% | 9:15 *** aaa | 85% | 10:15 aaa | 90% | 11:00 *** ... What I need is to get the top 10 users: user | score | time -----+-------+------ aaa | 90% | 11:00 bbb | 50% | 9:15 ... I've come up with the following SELECT: SELECT * FROM (SELECT user, score, time FROM tests_score ORDER BY user, score DESC, time DESC) t1 GROUP BY user ORDER BY score DESC, time LIMIT 10 It works fine but I'm not quite sure if my use of ORDER BY is the right way to pick the first row of each group of sorted records. Is there any better practice to achieve the same result? (I use MySQL 5)

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• How to Implement Single Sign-On between Websites

  - by hmloo

  Introduction Single sign-on (SSO) is a way to control access to multiple related but independent systems, a user only needs to log in once and gains access to all other systems. a lot of commercial systems that provide Single sign-on solution and you can also choose some open source solutions like Opensso, CAS etc. both of them use centralized authentication and provide more robust authentication mechanism, but if each system has its own authentication mechanism, how do we provide a seamless transition between them. Here I will show you the case. How it Works The method we’ll use is based on a secret key shared between the sites. Origin site has a method to build up a hashed authentication token with some other parameters and redirect the user to the target site. variables Status Description ssoEncode required hash(ssoSharedSecret + , + ssoTime + , + ssoUserName) ssoTime required timestamp with format YYYYMMDDHHMMSS used to prevent playback attacks ssoUserName required unique username; required when a user is logged in Note : The variables will be sent via POST for security reasons Building a Single Sign-On Solution Origin Site has function to 1. Create the URL for your Request. 2. Generate required authentication parameters 3. Redirect to target site. using System; using System.Web.Security; using System.Text; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string postbackUrl = "http://www.targetsite.com/sso.aspx"; string ssoTime = DateTime.Now.ToString("yyyyMMddHHmmss"); string ssoUserName = User.Identity.Name; string ssoSharedSecret = "58ag;ai76"; // get this from config or similar string ssoHash = FormsAuthentication.HashPasswordForStoringInConfigFile(string.Format("{0},{1},{2}", ssoSharedSecret, ssoTime, ssoUserName), "md5"); string value = string.Format("{0}:{1},{2}", ssoHash,ssoTime, ssoUserName); Response.Clear(); StringBuilder sb = new StringBuilder(); sb.Append("<html>"); sb.AppendFormat(@"<body onload='document.forms[""form""].submit()'>"); sb.AppendFormat("<form name='form' action='{0}' method='post'>", postbackUrl); sb.AppendFormat("<input type='hidden' name='t' value='{0}'>", value); sb.Append("</form>"); sb.Append("</body>"); sb.Append("</html>"); Response.Write(sb.ToString()); Response.End(); } } Target Site has function to 1. Get authentication parameters. 2. Validate the parameters with shared secret. 3. If the user is valid, then do authenticate and redirect to target page. 4. If the user is invalid, then show errors and return. using System; using System.Web.Security; using System.Text; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { if (User.Identity.IsAuthenticated) { Response.Redirect("~/Default.aspx"); } } if (Request.Params.Get("t") != null) { string ticket = Request.Params.Get("t"); char[] delimiters = new char[] { ':', ',' }; string[] ssoVariable = ticket.Split(delimiters, StringSplitOptions.None); string ssoHash = ssoVariable[0]; string ssoTime = ssoVariable[1]; string ssoUserName = ssoVariable[2]; DateTime appTime = DateTime.MinValue; int offsetTime = 60; // get this from config or similar try { appTime = DateTime.ParseExact(ssoTime, "yyyyMMddHHmmss", null); } catch { //show error return; } if (Math.Abs(appTime.Subtract(DateTime.Now).TotalSeconds) > offsetTime) { //show error return; } bool isValid = false; string ssoSharedSecret = "58ag;ai76"; // get this from config or similar string hash = FormsAuthentication.HashPasswordForStoringInConfigFile(string.Format("{0},{1},{2}", ssoSharedSecret, ssoTime, ssoUserName), "md5"); if (string.Compare(ssoHash, hash, true) == 0) { if (Math.Abs(appTime.Subtract(DateTime.Now).TotalSeconds) > offsetTime) { //show error return; } else { isValid = true; } } if (isValid) { //Do authenticate; } else { //show error return; } } else { //show error } } } Summary This is a very simple and basic SSO solution, and its main advantage is its simplicity, only needs to add a single page to do SSO authentication, do not need to modify the existing system infrastructure.

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• SharePoint - DIP problem on local copies downloaded from the portal

  - by user255234

  Our users have issues where the Document Information Panel(DIP) appears on Word, Excel, PPT documents. Here is the scenario: User downloads a copy of a template from the portal to his/her local hard drive. User edits that template and renames the file, again saving it to his/her local drive. User continues to edit and update that new document, and it continues to prompt him/her for document information as if the user was saving it on the portal. User clicks the “X” to remove this DIP bar, the next time he/she opens the local file it comes back. Is there anything I can do to make the DIP NOT SHOW on the local copies? Thanks!

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• MySQl - update field by counting data in other table

  - by Qiao

  There are two tables. One is users info "users", one is comments info "comments". I need to create new field "comments" in users table, that contains number of comments of that user. Table "comments" has "user" field with user's id of that comment. What is optimal way to count number of comments by every user? With php you should write script that selects every user and than count number of his comments and then update "comments" field. It is not hard for me, but boring. Is it possible to do it without php, only in MySQL?

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