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  • using joins or multiple queries in php/mysql

    - by askkirati
    Here i need help with joins. I have two tables say articles and users. while displaying articles i need to display also the user info like username, etc. So will it be better if i just use joins to join the articles and user tables to fetch the user info while displaying articles like below. SELECT a.*,u.username,u.id FROM articles a JOIN users u ON u.id=a.user_id OR can this one in php. First i get the articles with below sql SELECT * FROM articles Then after i get the articles array i loop though it and get the user info inside each loop like below SELECT username, id FROM users WHERE id='".$articles->user_id."'; Which is better can i have explanation on why too. Thank you for any reply or views

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  • url rewrite & redirect question

    - by Shawn
    Say currently I have url like : http://mydomain.com/showpost.php?p=123 Now I want to make it prettier : http://mydomain.com/123/post-title I'm using apache rewrite which grabs segment '123' and put the url back to http://mydomain.com/showpost.php?p=123 OK. Here is the problem. I want to redirect the original non-pretty urls which were indexed by Google to the pretty versions, I want this because I heard that Google may punish me if he sees multiple urls pointing to identical content. So I need to redirect /showpost.php?p=123 to /123/post-title This I have to do in my php code coz there's no way Apache to be able to figure out the 'post-title', but if I put the redirect code in php code, then it will be a infinite loop, such as : Request : /showpost.php?p=123 redirected to : /123/post-title rewritten to: /showpost.php?p=123 redirected again to : /123/post-title ... So on and so forth. Sorry I should Google the solution first but I really don't know how to describe my situation in English to make Google return reasonable results. Please help me. Thanks.

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  • Get correct output from UTF-8 stored in VarChar using Entity Framework or Linq2SQL?

    - by jasonpenny
    Borland StarTeam seems to store its data as UTF-8 encoded data in VarChar fields. I have an ASP.NET MVC site that returns some custom HTML reports using the StarTeam database, and I would like to find a better solution for getting the correct data, for a rewrite with MVC2. I tried a few things with Encoding GetBytes and GetString, but I couldn't get it to work (we use mostly Delphi at work); then I figured out a T-SQL function to return a NVarChar from UTF-8 stored in a VarChar, and created new SQL views which return the data as NVarChar, but it's slow. The actual problem appears like this: “description†instead of “description”, in both SSMS and in a webpage when using Linq2SQL Is there a way to get the proper data out of these fields using Entity Framework or Linq2SQL?

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  • Switching xib's in iPhone SDK?

    - by NextRev
    I'm having issues with switching xib's when I try to from my second view into the third. I get into the second view from the first like this... -(IBAction)startButtonClicked:(id)sender{ Number2ViewController *screen = [[Number2ViewController alloc] initWithNibName:nil bundle:nil]; screen.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; [self presentModalViewController:screen animated:YES]; [screen release]; } But when I'm in the second view trying to get to the third view, the app crashes... -(IBAction)nextButtonClicked:(id)sender{ Number3ViewController *screen = [[Number3ViewController alloc] initWithNibName:nil bundle:nil]; screen.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; [self presentModalViewController:screen animated:YES]; [screen release]; } I know how to go into one view and then immediately back using [self dismissModalViewControllerAnimated:YES]; How do you just keep going to different views though without having to go back first?

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  • How would I go about sharing variables in a class with Lua?

    - by Nicholas Flynt
    I'm fairly new to Lua, I've been working on trying to implement Lua scripting for logic in a Game Engine I'm putting together. I've had no trouble so far getting Lua up and running through the engine, and I'm able to call Lua functions from C and C functions from Lua. The way the engine works now, each Object class contains a set of variables that the engine can quickly iterate over to draw or process for physics. While game objects all need to access and manipulate these variables in order for the Game Engine itself to see any changes, they are free to create their own variables, a Lua is exceedingly flexible about this so I don't forsee any issues. Anyway, currently the Game Engine side of things are sitting in C land, and I really want them to stay there for performance reasons. So in an ideal world, when spawning a new game object, I'd need to be able to give Lua read/write access to this standard set of variables as part of the Lua object's base class, which its game logic could then proceed to run wild with. So far, I'm keeping two separate tables of objects in place-- Lua spawns a new game object which adds itself to a numerically indexed global table of objects, and then proceeds to call a C++ function, which creates a new GameObject class and registers the Lua index (an int) with the class. So far so good, C++ functions can now see the Lua object and easily perform operations or call functions in Lua land using dostring. What I need to do now is take the C++ variables, part of the GameObject class, and expose them to Lua, and this is where google is failing me. I've encountered a very nice method here which details the process using tags, but I've read that this method is deprecated in favor of metatables. What is the ideal way to accomplish this? Is it worth the hassle of learning how to pass class definitions around using libBind or some equivalent method, or is there a simple way I can just register each variable (once, at spawn time) with the global lua object? What's the "current" best way to do this, as of Lua 5.1.4?

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  • How to handle data output in an Observer?

    - by Mannaz
    I have an Observable and an Observer. The observable does download some stuff in a background thread and calls notifyObservers to let the observers read the status. At some point in public void update the observer tries to updates the GUI ((TextView)findViewById('R.id.foo')).setText("bar"); but it seems like the observable thread calls this method, because the Observable (!!!) throws this: android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. at android.view.ViewRoot.checkThread(ViewRoot.java:2462) at android.view.ViewRoot.requestLayout(ViewRoot.java:512) ... at com.mynamespace.acitivty.TrackActivity.startPlay(TrackActivity.java:72) at com.mynamespace.acitivty.TrackActivity.update(TrackActivity.java:107) at java.util.Observable.notifyObservers(Observable.java:147) at java.util.Observable.notifyObservers(Observable.java:128) at com.mynamespace.module.communication.Download.stateChanged(Download.java:213) at com.mynamespace.module.communication.Download.run(Download.java:186) at java.lang.Thread.run(Thread.java:1058) Is there some way I can prevent this from happening? I'm sure I'm missing something obvious here.

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  • Unable to forward UITouch events to my view controller

    - by hyn
    I have a UISplitViewController setup with a custom view added as a subview of the view (UILayoutContainerView) of split view controller. I am trying to forward touch events from my custom view controller to the master and detail views, but the following (which was suggested here on another thread) seems to have no effect: - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [touches anyObject]; // Do something [self.nextResponder touchesBegan:touches withEvent:event]; } (I couldn't get this formatted properly) As a result my custom view controller locks the events and all the UI underneath never has a chance to do anything. How can I get my master and detail view controllers to receive events?

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  • UIAlertView crashing on undocumented method

    - by morticae
    Our app has been crashing with a frequency of roughly 1 in 1,500 launches due to a bug that is proving elusive. The relevant portion of the stack trace is included. It's being fired as a callback so I have no reference for where it's occurring in my own code. It looks like what's going on is there is a UIViewAnimationState object that is calling UIAlertView's private method (_popoutAnimationDidStop:finished:). Only problem is, it appears the UIAlertView has been dealloced by this point. I don't do anything weird with alert views. I throw them up, and I wait for user input. They are all shown before being released. Anyone encountered this? At this point, I'm leaning toward it being an Apple bug. Thread 0 Crashed: 0 libobjc.A.dylib 0x3138cec0 objc_msgSend + 24 1 UIKit 0x326258c4 -[UIAlertView(Private) _popoutAnimationDidStop:finished:] 2 UIKit 0x324fad70 -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] 3 UIKit 0x324fac08 -[UIViewAnimationState animationDidStop:finished:] 4 QuartzCore 0x311db05c run_animation_cal lbacks

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  • ASP.NET MVC: Accessing ModelMetadata for items in a collection

    - by DanM
    I'm trying to write an auto-scaffolder for Index views. I'd like to be able to pass in a collection of models or view-models (e.g., IEnumerable<MyViewModel>) and get back an HTML table that uses the DisplayName attribute for the headings (th elements) and Html.Display(propertyName) for the cells (td elements). Each row should correspond to one item in the collection. When I'm only displaying a single record, as in a Details view, I use ViewData.ModelMetadata.Properties to obtain the list of properties for a given model. But what happens when the model I pass to the view is a collection of model or view-model objects and not a model or view-model itself? How do I obtain the ModelMetadata for a particular item in a collection?

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  • C# ProgressBar design pattern

    - by MadSeb
    Hi, I'm working on a database upgrader application. The upgrader updates the schema of a database ( adds new columns, renames columns , adds new tables, new views to an existing database by executing SQL statements ). When a user wants to upgrade from version 1.0 to 2.0 , "Upgrader" objects are taken from an object factory and the "Execute" method of each "Upgrader" is called. The GUI of the application has a progress bar and each time an upgrader object performs a SQL statement the progress bar gets incremented. while (!version.Equal(CurrentVersion)) { IUpgrader myUpgrader = UpgraderFactory.GetUpgrader(version); myUpgrader.Execute(UpgradedFile,progressbar); version.Increment(); } My question is very simple : how should the upgrader object communicate with the progressbar. In the code above, the upgrader object is given direct access to the progressbar but I'm wondering if some better way of doing this or better design pattern exists. Regards, Seb

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  • Drawing the UIPicker values from multiple components?

    - by Rob
    I have the UIPicker setup with multiple components and a button below it. Depending on what the user has chosen with the UIPicker determines which new view will be loaded but I am having trouble determining how to extrapolate the information from the picker itself. Right now I have this method being called when the button is pressed: - (IBAction) buttonPressed { if (component:1 == 1 && component:2 == 1) { //Load the view number 1. } else if (component:1 == 2 && component:2 == 1) { //Load the view number 2. } else { //Load the view number 3. } } I obviously know that my code is wrong but I hope it gets the point across. I have multiple components and I need to figure out how to use the information that the user is scrolling to on the picker to determine which view to move to. (I know how to load the views, I just commented those in the code to illuminate the problem areas better.)

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  • NameError: uninitialized constant Nokogiri::HTML::DocumentFragment

    - by Mike Sutton
    About three hours ago I started seeing the above error in my production server. It comes from a call to the sanitize gem: vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:276:in 'load_missing_constant' vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:468:in `const_missing' vendor/gems/sanitize-1.2.0/lib/sanitize.rb:91:in `clean!' vendor/gems/sanitize-1.2.0/lib/sanitize.rb:84:in `clean' vendor/gems/sanitize-1.2.0/lib/sanitize.rb:49:in `clean' app/helpers/application_helper.rb:28:in `display_none' app/views/main/_blogs.html.erb:13:in `_run_erb_47app47views47main47_blogs46html46erb' The error only occurs on the production server (linux), not my development machine (windows) I tried rolling back my latest deployment but it didn't fix it. I've updated to sanitize 1.2.0 (which was the latest version brought down by gem update sanitize, though I note my host is running 1.3.6. Can anyone provide any clues to help fix this?

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  • django url user id versus userprofile id problem

    - by dana
    hello there, i have a mini comunity where each user can search and find another user profile. Userprofile is a class model, indexed differently compared to user model class (user id is not equal to userprofile id) But i cannot see a user profile by typing in the url the corresponding id. I only see the profile of the currently logged in user. Why is that? I'd also want to have in my url the username (a primary key of the user table also) and NOT the id (a number). The guilty part of the code is: what can i replace that request.user with so that it wil actually display the user i searched for, and not the currently logged in? def profile_view(request, id): u = UserProfile.objects.get(pk=id) cv = UserProfile.objects.filter(created_by = request.user) blog = New.objects.filter(created_by = request.user) return render_to_response('profile/publicProfile.html', { 'u':u, 'cv':cv, 'blog':blog, }, context_instance=RequestContext(request)) in urls (of the accounts app): url(r'^profile_view/(?P<id>\d+)/$', profile_view, name='profile_view'), and in template: <h3>Recent Entries:</h3> {% load pagination_tags %} {% autopaginate list 10 %} {% paginate %} {% for object in list %} <li>{{ object.post }} <br /> Voted: {{ vote.count }} times.<br /> {% for reply in object.reply_set.all %} {{ reply.reply }} <br /> {% endfor %} <a href=''> {{ object.created_by }}</a> <br /> {{object.date}} <br /> <a href = "/vote/save_vote/{{object.id}}/">Vote this</a> <a href="/replies/save_reply/{{object.id}}/">Comment</a> </li> {% endfor %} thanks in advance!

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  • CakePHP dynamic element

    - by Logic Artist
    I am trying to create a message-board type element in a CakePHP app. This element will be displayed on all pages and views that use a particular layout. I want it to display all the messages in the model, then show the add form when a link is clicked, then return to the updated message list when submitted. All this without affecting the current view/page. I have my message model/controller/index set up, with a message board element that requests the index action. This works fine. However I am perplexed about how to return back to the original page/action from which the link was clicked. I can't use $this-referer() because that will link back to the add() action; what I want rather is to link to the page/view before that. Any general pointers on how to achieve something like this?

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  • Insane Graphics.lineStyle behavior

    - by Simon
    Hi all, I'd like some help with a little project of mine. Background: i have a little hierarchy of Sprite derived classes (5 levels starting from the one, that is the root application class in Flex Builder). Width and Height properties are overriden so that my class always remembers it's requested size (not just bounding size around content) and also those properties explicitly set scaleX and scaleY to 1, so that no scaling would ever be involved. After storing those values, draw() method is called to redraw content. Drawing: Drawing is very straight forward. Only the deepest object (at 1-indexed level 5) draws something into this.graphics object like this: var gr:Graphics = this.graphics; gr.clear(); gr.lineStyle(0, this.borderColor, 1, true, LineScaleMode.NONE); gr.beginFill(0x0000CC); gr.drawRoundRectComplex(0, 0, this.width, this.height, 10, 10, 0, 0); gr.endFill(); Further on: There is also MouseEvent.MOUSE_WHEEL event attached to the parent of the object that draws. What handler does is simply resizes that drawing object. Problem: Screenshot When resizing sometimes that hairline border line with LineScaleMode.NONE set gains thickness (quite often even 10 px) + it quite often leaves a trail of itself (as seen in the picture above and below blue box (notice that box itself has one px black border)). When i set lineStile thickness to NaN or alpha to 0, that trail is no more happening. I've been coming back to this problem and dropping it for some other stuff for over a week now. Any ideas anyone? P.S. Grey background is that of Flash Player itself, not my own choise.. :D

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  • Custom View - Avoid redrawing when non-interactive

    - by MasterGaurav
    I have a complex custom view - photo collage. What is observed is whenever any UI interaction happens, the view is redrawn. How can I avoid complete redrawing (for example, use a cached UI) of the view specially when I click the "back" button to go back to previous activity because that also causes redrawing of the view. While exploring the API and web, I found a method - getDrawingCache() - but don't know how to use it effectively. How do I use it effectively? I've had other issues with Custom Views that I outline here.

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  • ipad dev - in the UISplitViewController template, how is the method setDetailItem called?

    - by Brian
    I am developing an ipad app which has a UISplitViewController. (I use IB to build the interface, but I do not use the template) Both master and detail (left and right) views are navigationController. The left view subclass UITableView and the right view should push another controller if the cell on the left is selected. I don't know how to make my detail view responds to my master view. Also, in the template, the detailViewController has a id detailItem and a method setDetailItem. How are these two connected? I cannot see any connection between but setDetailItem is called when detailViewController.detailItem is being called. Thanks in advance.

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  • I keep Getting KeyError: 'tried' Whenever I Tried to Run Django Dev Server from Remote Machine

    - by Spikie
    I am running django on python2.6.1, and did start the django web server like this manage.py runserver 192.0.0.1:8000 then tried to connect to the django dev web server on http://192.0.0.1:8000/ keep getting this message on the remote computer Traceback (most recent call last): File "C:\Python26\Lib\site-packages\django\core\servers\basehttp.py", line 279, in run self.result = application(self.environ, self.start_response) File "C:\Python26\Lib\site-packages\django\core\servers\basehttp.py", line 651, in call return self.application(environ, start_response) File "C:\Python26\lib\site-packages\django\core\handlers\wsgi.py", line 241, in call response = self.get_response(request) File "C:\Python26\lib\site-packages\django\core\handlers\base.py", line 115, in get_response return debug.technical_404_response(request, e) File "C:\Python26\Lib\site-packages\django\views\debug.py", line 247, in technical_404_response tried = exception.args[0]['tried'] KeyError: 'tried' what i am doing wrong ? it seen to work ok if i run http://192.0.0.1:8000/ on the computer that runs the Django web server and have that ip 192.0.0.1:8000

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  • How Can I Add a New Command to a Control's Event

    - by Chris
    Hi, thanks for taking a look at this question. I have been building an application (VB/WPF) following Josh Smith's example of an MVVM pattern: Click here to view My Views have Controls which trigger a Command upon an event, such as a button click and these are bound to properties in the ViewModel. My ViewModel exposes properties of type ICommand which invoke the appropriate methods. This has worked well, until now! I now want to use a Thumb Control to allow a user to move an object within a Canvas. I don't believe that the Thumb has a Command capability 'out of the box'. A Thumb raises a 'DragDelta' event when being moved. So my question is as follows: How do I extend a Control's capability to issue a Command upon an event please? I wish to issue a new Command, let's say 'onDragDelta' so that I can bind it to a property in my ViewModel just like my Buttons. Thank you very much

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  • Confusion using XCode 4.5 for iOS 5.0 and iOS 6.0

    - by AppleDeveloper
    I am very much confused between iOS 5.0 and iOS 6.0 with XCode 4.5. It's not very clear if I want to support my new App on iOS 5.0 onwards, which functionality should I use and which are not to use. Basically Xcode 4.5 gives you all functionality like Container Views and Unwind Segues in storyboard (...and many more that I might not be aware) that are available only from iOS 6.0 and you wouldn't know until you run your app and it crashes! Could anyone please let me know any simple solution to this? Do I have to revert back to Xcode 4.4? I am setting deployment target to iOS 5.0 but I couldn't set Base SDK to iOS 5.0 as it doesn't appear in the list. See attached image. Thanks.

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  • Decoration View *above* cells in UICollectionView

    - by Dhiraj Gupta
    I've got a decoration view showing the way I want, in my UICollectionView. The position and size is right. The decoration view stays at the frame I'm setting for it in my layout. But, I want the decoration view to be above the cells, not below them. I tried setting the zIndex property on the UICollectionViewLayoutAttributes for the decoration view, but this has no effect - I tried logging out the zindex of the cells, and they're all returning 0, and my decoration view's zIndex is set to 20. I'm guessing having decoration views above the cells is not supported, at least in UICollectionViewFlowLayout? Someone please confirm this, thanks! In the meantime, I'm going back to having a custom UIView subclass as a subview in the parent controller of the collection view and laying out the frame of it in the - (void) viewWillLayoutSubviews() method.

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  • ASP.Net MVC 2 Error Method not found: 'System .string

    - by Saravanan I M
    I converted my website from asp.net mvc 1.0 to 2.0. After converting that i am getting the following error in actionlink Method not found: 'System.String System.Web.Mvc.Html.LinkExtensions.RouteLink(System.Web.Mvc.HtmlHelper, System.String, System.Web.Routing.RouteValueDictionary, System.Collections.Generic.IDictionary`2<System.String,System.Object>)'. Line 102: <%var Signin = Html.Resource("globalResources, Signin"); %> Line 103: <% if (string.IsNullOrEmpty(Signin)) Signin = "Signin"; %> Line 104: <%= Html.ActionLink<AccountController>(cntrl => cntrl.LogOn(), Signin.ToString(), new { @class = "defaultmaster" })%> Line 105: | Line 106: <%var register = Html.Resource("globalResources, Register"); %> Source File: e:\Muchsocial\Sourcecode\Muchsocial\Views\Shared\Muchsocial.Master Line: 104

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  • invalid argument IE7 javascript line number changes

    - by Lauren
    This is the test page: http://www.onebagoneearth.com/ OBOEKindBag (spaces between the pagename and domain because I don't want the URL indexed as such) If you click on one of the thumbnails, or on the main image, you see a popup window, and if you enter a quantity and then click "add to cart" here, in IE7 (and IE6, but I'm not focusing on that as much), you see an invalid argument error with Code:0. The line # changes depending on which item you add to cart! The URL also changes because it depends on this line of javascript: var cartUrl = "/app/site/backend/additemtocart.nl?c=659197&n=2&buyid=" + zbuyid + "&qty=" + zqty + "&" + strOptionId + "=" + zitmId . The strOptionId variable, which contains the bag color type (ie. this changes for the different types of bags, like Kind bags, regular OBOE bags), and the zitmID variable which contains the particular bag color that you've selected (ie. Black), are what change, and also what seem to affect the line number that the invalid argument occurs on. The error definitely doesn't occur in Chrome 4, IE 8, or FF 3.5. Ideas?

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  • High performance text file parsing in .net

    - by diamandiev
    Here is the situation: I am making a small prog to parse server log files. I tested it with a log file with several thousand requests (between 10000 - 20000 don't know exactly) What i have to do is to load the log text files into memory so that i can query them. This is taking the most resources. The methods that take the most cpu time are those (worst culprits first): string.split - splits the line values into a array of values string.contains - checking if the user agent contains a specific agent string. (determine browser ID) string.tolower - various purposes streamreader.readline - to read the log file line by line. string.startswith - determine if line is a column definition line or a line with values there were some others that i was able to replace. For example the dictionary getter was taking lots of resources too. Which i had not expected since its a dictionary and should have its keys indexed. I replaced it with a multidimensional array and saved some cpu time. Now i am running on a fast dual core and the total time it takes to load the file i mentioned is about 1 sec. Now this is really bad. Imagine a site that has tens of thousands of visits a day. It's going to take minutes to load the log file. So what are my alternatives? If any, cause i think this is just a .net limitation and i can't do much about it.

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  • How does the momentum/inertial scroll work with the Magic Mouse on NSScrollView?

    - by jbrennan
    When you scroll with the newer Apple Magic Mouse (at least on 10.6, I can't confirm any previous Mac OS) you get inertial scroll like scrolling on iPhone (that is, after a flick of the finger to scroll, it doesn't abruptly stop, but instead gradually slows down). This behaviour is "for free" with all NSScrollViews, it would appear. There are exceptional cases, such as Tweetie for Mac (I've heard Tweetie was written with a custom Table View class that works akin to how UITableView works on iPhone). My question is, how do the scroll views know how to do this inertial scrolling? My guess is the mouse [driver] repeatedly sends scroll events with a dampening scroll magnitude (or something like that) over the scroll period. But I'm not really sure how it works. I am having some scrolling problems in my scrollview class and I'm trying to figure out why (obviously we don't have the source code to Tweetie to see why it doesn't get the proper scrolling), but just trying to better understand how it works in order to fix my own problems.

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