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• Page load problem

  - by AZHAR

  Hi, I am devolping a web application.the problem is that i am using a login control (not a .NET control) which is a part of master page and is acessible from all pages. if user log In from a page the login control updates itself and displlay some statistics of logged In user but the specific page does not reload. (some options on page are visible only to authenticated users, so that after login, page should be reloaded to display such options) after logIn methoed I wrote Reponse.Redirect(Request.Url.AbsoluteUri) after this the browser response the "Page cannot be displayed" It would be of great help to me. Many Thanks, Regards. AZHAR

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• GAE images.resize with fixed proportional crop

  - by user288541

  I need to resize and crop to exactly 60x80px from various size and aspect ratio. Just before i put into Datastore. Anyone already got this issue resolved. Currently i already succed to just transform it to exact height (80px) with various width which nott look so good when i try to display it on a list. e.g jcaroussel. My db.put code is like bellow: if users.get_current_user(): personal.personal_id = int(self.request.get('personal_id')) personal.name = self.request.get('name') personal.latitude = self.request.get('latitude') personal.info = self.request.get('info') photo = images.resize(self.request.get('img'), 0, 80) personal.photo = db.Blob(photo) personal.lc_id = int(self.request.get('lc_id')) personal.put() self.redirect('/admin/personal') else: self.response.out.write('I\'m sorry, you don\'t have permission to add this LP Personal Data.') I just want to do similar result when we upload our avatar on google talk/google chat. Anyone solved this? Thx

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• Using attr_accessible in a join model with has_many :through relationship

  - by Paulo Oliveira

  I have a USER that creates a COMPANY and become an EMPLOYEE in the process. The employees table has an :user_id and a :company_id. class User has_many :employees has_many :companies, :through => :employees class Employee belongs_to :user belongs_to :company attr_accessible :active class Company has_many :employees has_many :users, :through => employees Pretty basic. But here's the thing, the resource EMPLOYEE has other attributes than its foreign keys, like the boolean :active. I would like to use attr_accessible, but this causes some problems. The attribute :user_id is set right, but :company_id is nil. @user.companies << Company.new(...) Employee id:1 user_id:1 company_id:nil So my question is: if :user_id is set right, despite it is not an attr_accessible, why :company_id isn't set right just the same? It shouldn't be an attr_accessible. I'm using Rails 3.0.8, and have also tested with 3.0.7.

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• Packaging one or two plugins as a standalone RCP application?

  - by Martin Cowie

  I have a handful of Eclipse plugins that I maintain. They are proving useful enough that non Eclipse users have asked for them without the overhead of a full eclipse install. I am certain this is possible, but uncertain how to make this possible. My attempts at creating a standalone RCP app and then including my plugins as dependencies have given me mixed results. More specifically, my perspective tries to instantiate a view from a plugin and fails (silently)... public void createInitialLayout(IPageLayout layout) { layout.addStandaloneView( "myPlugin.ID", false, IPageLayout.LEFT, 0.25f, editorArea); } ... but as the same plugin implements a search extension, it does show up in the standard Eclipse search dialog. Are there any resources that hardened Eclipse tars can point me to, that will help overcome this hurdle? M.

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• Polling versus socket servers for online Flash games

  - by justin

  Hi, I want to make an online flash game, it will have social features but the gameplay will be primarily single-player. For example, no two players will appear on the screen at once, the social interaction will be through asynchronous messages, there won't be real-time chat or anything. Much of the logic would happen in the client, the server would validate the client logic, but it wouldn't need to be totally synchronous, which is why I'm thinking polling might be satisfactory. I have read in many places that socket servers can be more efficient than using polling for online games, but is that mainly a consideration for games that are more multi-player with more mult-player interactions than the game I have descriebed? If many users are playing online at the same time, but each playing a relatively isolated game, and not interacting to in real-time with each players, could polling be okay, or would using sockets be advisable no matter what if you have an online game that you envision many people playing at the same time? Thanks!

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• Graph visualization code in javascript?

  - by Chris Farmer

  Hi. I have a data structure that represents a directed graph, and I want to render that dynamically on an HTML page. Does anyone know of any javascript code that can do a reasonable job with graph layout? These graphs will usually be just a few nodes, maybe ten at the very upper end, so my guess is that performance isn't going to be a big deal. Ideally, I'd like to be able to hook it in with jQuery so that users can tweak the layout manually by dragging the nodes around. Edit: Google's Visualization API seems to be more "graphs as charts" oriented than "graphs as nodes" oriented. I didn't see any node-oriented visualizations already built there, anyway. Do you know that one exists?

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• How to model a social news feed on Google App Engine

  - by PEZ

  We want to implement a "News feed" where a user can see messages broadcasted by her friends, sorted with newest message first. But the feed should reflect changes in her friends list. (If she adds new friends, messages from those should be included in the feed, and if she removes friends their messages should not be included.) If we use the pubsub-test example and attach a recipient list to each message this means a lot of manipulation of the message recipients lists when users connect and disconnect friends. We first modeled publish-subscribe "fan out" using conventional RDBMS thinking. It seemed to work at first, but then, since the IN operator works the way it does, we quickly realized we couldn't continue on that path. We found Brett Slatkin's presentation from last years Google I/O and we have now watched it a few times but it isn't clear to us how to do it with "dynamic" recipient lists. What we need are some hints on how to "think" when modeling this.

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• How can I write a "user can only access own profile page" type of security check in Play Framework?

  - by karianneberg

  I have a Play framework application that has a model like this: A Company has one and only one User associated with it. I have URLs like http://www.example.com/companies/1234, http://www.example.com/companies/1234/departments, http://www.example.com/companies/1234/departments/employees and so on. The numbers are the company id's, not the user id's. I want that normal users (not admins) should only be able to access their own profile pages, not other people's profile pages. So a user associated with the company with id 1234 should not be able to access the URL http://www.example.com/companies/6789 I tried to accomplish this by overriding Secure.check() and comparing the request parameter "id" to the ID of the company associated with the logged in user. However, this obviously fails if the parameter is called anything else than "id". Does anyone know how this could be accomplished?

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• Command line switches parsed out of executable's path

  - by Roger Pate

  Why do Windows programs parse command-line switches out of their executable's path? (The latter being what is commonly known as argv[0].) For example, xcopy: C:\Temp\foo>c:/windows/system32/xcopy.exe /f /r /i /d /y * ..\bar\ Invalid number of parameters C:\Temp\foo>c:\windows\system32\xcopy.exe /f /r /i /d /y * ..\bar\ C:\Temp\foo\blah -> C:\Temp\bar\blah 1 File(s) copied What behavior should I follow in my own programs? Are there many users that expect to type command-line switches without a space (e.g. program/? instead of program /?), and should I try to support this, or should I just report an error and exit immediately? What other caveats do I need to be aware of? (In addition to Anon.'s comment below that "debug/program" runs debug.exe from PATH even if "debug\program.exe" exists.)

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• Local web application or windows application for my system

  - by IHS

  Hello all I am going to design system that will keep track of publications due by researchers in my work place Need for this project : 1- a database housing the information . 2- Automatic reports must be generated . the users will upload PDF and we have around 25 researchers. I can’t decide which one is better for my system . My questions are : 1- Local web application or windows application ? 2- Access or SQL as database ? 3- I have visual studio 2010 for student use, Could I use it or I need to buy one ? Thanks in advance Mark from new zealand

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• Building a complete online payment gateway like Paypal

  - by John Stewart

  So this question isn't about integrating an existing payment gateway into my site. This is more of a architectural question. I want to build a system similar to Paypal. Now I understand that Paypal offers a lot of features under the roof and I can't implement all of them at once. I want to implement the core functionality of Paypal and other such services. So my question is (rather discussion is) around how would one go about building such a system. Some points to discuss: Handle payments through existing banks. I am guessing that I would need access to local bank protocols to get this. Allow users to securely store and process their payments How does Paypal handle the transactions? Thoughts?

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• Multiple Forms on the Same Page with Rails

  - by Eric Koslow

  So I'm building a rails app for high school students and I've hit a problem when it comes to creating users. I want the students to only be able to create accounts if they select their school and type in their school's password correctly. What is the correct / easiest way of doing this? Should I create a gatekeeper to the user#new action that they have to pass first or if their a way that on the same page a student can submit to forms. One would be the regular username, email, password using: form_for @user do ... end But then creating another form for the high-school / high-school password selection. Ideally the controller would be able to get the params of the high-school form, validate those, then go on to create the user from the user params. Is this possible using rails? My setup: Rails 3 and Ruby 1.9.2dev Thank you!

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• Sending a signup confirmation email with having to confirm using Devise

  - by slythic

  Hi all, I'm using devise to handle user authentication with my rails app. I'd like to allow my users to sign up and be instantly logged in and receive a confirmation email. Devise has the Confirmable module which sends out an email but requires the user to open up their mail application, find the email and click a link which then leads them to the site again. I'd like to just email the user a confirmation that they signed up and that's it. Is there a way for devise to do this or do I need to resolve to handling ActionMailer myself (if so, is there a quick and non-complex example)? Many thanks! -Tony

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• Why is memory management so visible in Java VM?

  - by Emil

  I'm playing around with writing some simple Spring-based web apps and deploying them to Tomcat. Almost immediately, I run into the need to customize the Tomcat's JVM settings with -XX:MaxPermSize (and -Xmx and -Xms); without this, the server easily runs out of PermGen space. Why is this such an issue for Java VMs compared to other garbage collected languages? Comparing counts of "tune X memory usage" for X in Java, Ruby, Perl and Python, shows that Java has easily an order of magnitude more hits in Google than the other languages combined. I'd also be interested in references to technical papers/blog-posts/etc explaining design choices behind JVM GC implementations, across different JVMs or compared to other interpreted language VMs (e.g. comparing Sun or IBM JVM to Parrot). Are there technical reasons why JVM users still have to deal with non-auto-tuning heap/permgen sizes?

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• Can an app use the clipboard for its own purposes? (read: who owns the clipboard?)

  - by eran

  In PowerBuilder's IDE, the code autocomplete feature uses the clipboard to communicate the completed text to the code window. By doing so, it overrides whatever was stored on the clipboard before. So, if you had the winning numbers of the next lottary stored on your clipboard, and you used the autocomplete to turn m_goodfor into m_goodfornothing, you've just lost your only chance of ever getting rich, and you're left with nothing on your clipboard. Features like that are the reason I hate software. It looks like it was implemented by some intern that noone was looking after. However, there's also a chance I got all worked up for nothing, and making such use of the clipboard is absolutely legit. So, can an app use the clipboard for its own purposes? Who is considered the owner of the clipboard? (Bonus votes to whoever puts himself in place of the feature's programmer, and provides some reasoning for this being done on purpose, assuming the users would actually benefite from it)

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• Why does CGPDFPageGetDrawingTransform() crash with SIGABRT when specifying a rotation?

  - by David

  When I call CGPDFPageGetDrawingTransform() with a rotation argument, the application crashes. If I specify no rotation, there is no crash. Here is my drawLayer:inContext: method: - (void)drawLayer:(CALayer*)layer inContext:(CGContextRef)context { CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0); CGRect boundingBox = CGContextGetClipBoundingBox(context); CGContextFillRect(context, boundingBox); //convert to UIKit native coodinate system CGContextTranslateCTM(context, 0.0, self.bounds.size.height); CGContextScaleCTM(context, 1.0, -1.0); //Rotate the pdf_page CGAffineTransform pfd_transform = CGPDFPageGetDrawingTransform(self.page, kCGPDFCropBox, self.frame, 58.46f, true); CGContextSaveGState (context); CGContextConcatCTM (context, pfd_transform); CGContextClipToRect (context, self.frame); CGContextDrawPDFPage (context, self.page); CGContextRestoreGState (context); } In the long run, I would like to rotate the pdf dynamically to follow a users heading. Maybe I am going at this all wrong... Thank you for your time.

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• sIFR Doesn't Work in FF3 Mac.

  - by Jake

  I thought it might be something I was doing wrong, but I am not seeing it working on any site, including Novemberborn.net. Any Ideas? The CSS is loaded, so the headlines are hidden, and then it is like the JS isn't loaded at all. Could this be a browser detection issue? I am using firefox 3 with latest flash player version 10. I have heard the complaint from other Mac users as well. Works on every other browser... EDIT: I removed the CSS to hide, it still doesn't work. After a pause, it loads the JS and removes the headlines, but doesn't replace them.

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• How do I retain uploaded files after POsting a form with a file upload?

  - by Ali

  Hi guys is it possible to be able to retain an uploaded file AFTER its been uploaded I mean I'm building a compose email application. Users can upload files as attachments. AT times out of 10 uploaded files one of them isn't uploaded correctly or the submitted form is invalid the compose page would be displayed again however the user would ned to upload the file again this time. Is it possible to somehow maintain the uploaded files somewhere on the first upload and if the form is invalid - be able to display links to the file uploaded or so?

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• VBA Excel To SqlServer

  - by adrianm

  What is the best way to write VBA code to connect to SQL Server 2005 from Excel? The users of the excel file might run XP, Vista, Win7 and I want to prevent driver installation as much as possible. My understanding is that XP uses MDAC while Vista/Win7 uses DAC. Does that mean that a reference to MDAC 2.8 will not work on a Vista machine and the other way around? Will my VBA code work on both if I don't add a reference and use late binding, e.g. CreateObject("ADODB.Connection")?

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• How to move an element in a sorted list and keep the CouchDb write "atomic"

  - by karlthorwald

  I have elements of a list in couchdb documents. Let's say these are 3 elements in 3 documents: { "id" : "783587346", "type" : "aList", "content" : "joey", "sort" : 100.0 } { "id" : "358734ff6", "type" : "aList", "content" : "jill", "sort" : 110.0 } { "id" : "abf587346", "type" : "aList", "content" : "jack", "sort" : 120.0 } A view retrieves all "aList" documents and displays them sorted by "sort". Now I want to move the elements, when I want to move "jack" to the middle, I could do this atomic in one write and change it's sort key to 105.0. The view now returns the documents in the new sort order. After a lot of sorting I could end up with sort keys like 50.99999 and 50.99998 after some years and in extreme situations run out of digits? What can you recommend, is there a better way to do this? I'd rather keep the elements in seperate documents. Different users might edit different elements in parallel (which also can get tricky). Maybe there is a much better way?

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• php cpanel

  - by Miguel Ping

  I have a php account with my provider, and I also have cpanel installed for me. I currently have two drupal sites there, let's called the main myMainSite and another one under construction called myNewSite. So when I go to www.myMainSite.com, I go to the main site. When I go to myNewSite.myMainSite.com, i go to the drupal site that is under construction. My question is, when my under construction site goes live, I want that all users that go to www.myMainSite.com see the new site (the one that is under myNewSite.myMainSite.com). How can I accomplish this with cpanel? is it within the "addon domains" configuration? I don't want a redirect that changes the address bar, ie, I want to keep the original url.

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• Click Once doesn't create StartMenu entry and Shortcut on Windows 7 x64

  - by MadBoy

  I've application that I deploy to share with ClickOnce so other users can install it and use it on their own machines. It worked fine till i noticed that when i install this app on my own machine (Windows 7 x 64) it doesn't add StartMenu (even thou it installs correctly and I have it in Control Panel / Programs). I didn't had that problem when my development machine was Windows XP. Application also deploys fine on other Windows XP computers. Also during installation (when i rerun setup) even thou I already have Net Framework 3.5 it always wants to install one (it starts that and terminates few seconds later - probably installer sees that it's already there). I can run application straigit from share just a bit of pain to do it. Are there some special settings I should do? Or some patches? I have Visual Studio 2008 and system with all optional updates installed. Application is written in C# and uses NET 3.5.

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• Android forwards compatibility

  - by Brian515

  Hi all, I just published my first application to the market, but i just found out that android.telephony.gsm.smsmanager was depreciated as of Android 1.6. My application depends on sending SMS messages, so it cannot not work in 1.6 or newer. I built the project against 1.5, but I only have a device with 1.5 to test on. Since I built on 1.5, am I fine in terms of newer OSes, or will users get force closes? Thanks in advance! P.S. Is there a way to send/receive SMS messages in the emulator? That would be helpful.

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• Checking if a touch is withing a UIButton's bounds.

  - by Joshua

  I am trying to make an if statement which will check whether the users touch is within a UIButton's bounds. I thought this would be an easy affair as UIButton is a subclass of UIView, however my code doesn't seem to work. This is the code I have been using. - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { NSArray *array = [touches allObjects]; UITouch *specificTouch = [array objectAtIndex:0]; currentTouch = [specificTouch locationInView:self.view]; if (CGRectContainsPoint(but.bounds, currentTouch)) { //Do something is in bounds. } //Else do nothing. }

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• CakePHP Bake association problem

  - by Apu

  I have only two tables in my database with a one-to-many relationship between them (user hasMany messages) and am trying to get basic CRUD functionality going. Bake detects the associations correctly and specifies them correctly inside the model classes, but in controllers and views it looks like Cake doesn't know anything about those associations -- I don't even get a select tag for user_id when I go add a new message. Has anyone come across this problem before? What can I be doing wrong? Table structure appears to be fine: CREATE TABLE users ( id int(11) NOT NULL AUTO_INCREMENT, username varchar(255) NOT NULL, `password` varchar(255) NOT NULL, email varchar(255) NOT NULL, created datetime NOT NULL, modified datetime NOT NULL, PRIMARY KEY (id) ) ENGINE=MyISAM DEFAULT CHARSET=utf8; CREATE TABLE IF NOT EXISTS `messages` ( `id` int(11) NOT NULL AUTO_INCREMENT, `user_id` int(11) NOT NULL, `content` varchar(255) NOT NULL, `created` datetime NOT NULL, `modified` datetime NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;

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