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  • Why can't I set boolean columns with update?

    - by Benjamin Oakes
    I'm making a user administration page. For the system I'm creating, users need to be approved. Sometimes, there will be many users to approve, so I'd like to make that easy. I'm storing this as a boolean column called approved. I remembered the Edit Multiple Individually Railscast and thought it would be a great fit. However, I'm running into problems which I traced back to ActiveRecord::Base#update. update works fine in this example: >> User.all.map(&:username) => ["ben", "fred"] >> h = {"1"=>{'username'=>'benjamin'}, "2"=>{"username"=>'frederick'}} => {"1"=>{"username"=>"benjamin"}, "2"=>{"username"=>"frederick"}} >> User.update(h.keys, h.values) => ... >> User.all.map(&:username) => ["benjamin", "frederick"] But not this one: >> User.all.map(&:approved) => [true, nil] >> h = {"1"=>{'approved'=>'1'}, "2"=>{'approved'=>'1'}} >> User.update(h.keys, h.values) => ... >> User.all.map(&:approved) => [true, nil] Chaging from '1' to true didn't make a difference when I tested. What am I doing wrong?

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  • iphone: problem playing youtube mp4's over 3g network

    - by Alex1987
    Hi guys I'm am developing an app that enables the user to stream youtube mp4 videos on the iphone. What I did was very simple - I just took a url of the form http://youtube.com/get_video?*&fmt=18 (for example http://youtube.com/get_video?video_id=KUXGVfmrEN4&&t=vjVQa1PpcFNrxzfbeI6WrJfK6s0BdQ9ypMgV_6yqwjo=&fmt=18) and used mpmovieplayercontroller or UIWebView to stream the video. It works great over WIFI but doesn't work at all on 3g network . On 3g I get a blank page in the UIWebView or file format not supported on mpmovieplayercontroller. Does youtube block access from 3g networks to its mp4 videos? How to bypass this? You can check this easily yourself on your own iphone by preforming the following steps: 1. Obtain the download link. You can do this easily by downloading the following plugin for firefox: https://addons.mozilla.org/en-US/firefox/addon/13990. 2. Email the link to your email. 3. Open your mail on the iphone and click on the link. Try this on WIFI and 3g.

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  • I/O between AIR client using Native process and executable java .jar

    - by aseem behl
    I am using Adobe AIR 2.0 native process API to launch a java executable jar. I/O is handled by writing to the input stream of the java process and reading from the output stream. The application is event based where several events are fired from the server. We catch these events in java code, handle them and write the output to the outputstream using the synchronized static method below. public class ReaderWriter { static Logger logger = Logger.getLogger(ReaderWriter.class); public synchronized static void writeToAir(String output){ try{ byte[] byteArray = output.getBytes(); DataOutputStream dataOutputStream = new DataOutputStream(System.out); dataOutputStream.write(byteArray); dataOutputStream.flush(); } catch (IOException e) { logger.info("Exception while writing the output. " + e); } } } The issue is that some messages are lost between the transfer and not all messages reach the AIR client. If I run the java application from the console I am receiving all the messages. It would be great if somebody could point out what I am missing. Following are some of the listeners used to send the event data to the AIR client. // class used to process Shutdown events from the Session private class SessionShutdownListener implements SessionListener{ public void onEvent(Event e) { Session.Shutdown sd = (Session.Shutdown) e; Session.ShutdownReason sr = sd.getReason(); String eventOutput = "eo;" + "Session Shutdown event ocurred reason=" + sr.strValue() + "\n"; ReaderWriter.writeToAir(eventOutput); } } // class used to process OperationSucceeded events from the Session private class SessionOperationSucceededListener implements SessionListener{ public void onEvent(Event e) { Session.OperationSucceeded os = (Session.OperationSucceeded) e; String eventOutput = "eo;" + "Session OperationSucceeded event ocurred" + "\n"; ReaderWriter.writeToAir(eventOutput); } }

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  • asp.net Membership : Extending Role membership?

    - by mark smith
    Hi there, I am been taking a look at asp.net membership and it seems to provide everything that i need but i need some kind of custom Role functionality. Currently i can add user to a role, great. But i also need to be able to add Permissions to Roles.. i.e. Role: Editor Permissions: Can View Editor Menu, Can Write to Editors Table, Can Delete Entries in Editors Table. Currently it doesn't support this, The idea behind this is to create a admin option in my program to create a role and then assign permissions to a role to say "allow the user to view a certain part of the application", "allow the user to open a menu item" Any ideas how i would implement soemthing like this? I presume a custom ROLE provider but i was wondering if some kind of framework extension existed already without rolling my own? Or anybody knows a good tutorial of how to tackle this issue? I am quite happy with what asp.net SQL provider has created in terms of tables etc... but i think i need to extend this by adding another table called RolesPermissions and then I presume :-) adding some kind of enumeration into the table for each valid permission?? THanks in advance

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  • how to link with static mySQL C library with Visual Studio 2008?

    - by Jean-Denis Muys
    Hi, My project is running fine, but its requirement for some DLLs means it cannot be simply dragged and dropped by the end user. The DLLs are not loaded when put side by side with my executable, because my executable is not an application, and its location is not in the few locations where Windows looks for DLL. I already asked a question about how to make their loading happen. None of the suggestions worked (see the question at http://stackoverflow.com/questions/2637499/how-can-a-win32-app-plugin-load-its-dll-in-its-own-directory) So I am now exploring another way: get rid of the DLLs altogether, and link with static versions of them. This is failing for the last of those DLLs. So I am at this point where all but one of the libraries are statically linked, and everything is fine. The last library is the standard C library for mySQL, aka Connector/C. The problem I have may or may not be related with that origin. Whenever I switched to the static library in the linker additional dependency, I get the following errors (log at the end): 1- about 40 duplicate symbols (e.g. _toupper) mutually between LIBCMT.lib and MSVCRT.lib. Interestingly, I can't control the inclusion of these two libraries: they are from Visual Studio and automatically included. So why are these symbol duplicate when I include mySQL's static lib, but not its DLL? Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\MSVCRT.lib: Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\OLDNAMES.lib: Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\msvcprt.lib: Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\LIBCMT.lib: LIBCMT.lib(setlocal.obj) : error LNK2005: _setlocale already defined in MSVCRT.lib(MSVCR90.dll) Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\MSVCRT.lib: MSVCRT.lib(MSVCR90.dll) : error LNK2005: _toupper already defined in LIBCMT.lib(toupper.obj) 2- two warnings that MSVCRT and LIBCMT conflicts with use of other libs, with a suggestion to use /NODEFAULTLIB:library:. I don't understand that suggestion: what am I supposed to do and how? LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library LINK : warning LNK4098: defaultlib 'LIBCMT' conflicts with use of other libs; use /NODEFAULTLIB:library 3- an external symbol is undefined: _main. So does that mean that the static mySQL lib (but not the DLL) references a _main symbol? For the sake of it, I tried to define an empty function named _main() in my code, with no difference. LIBCMT.lib(crt0.obj) : error LNK2001: unresolved external symbol _main As mentioned in my first question, my code is a port of a fully working Mac version of the code. Its a plugin for a host application that I don't control. The port currently works, albeit with installation issues due to that lone remaining DLL. As a Mac programmer I am rather disoriented with Visual Studio and Windows which I find confusing, poorly designed and documented, with error messages that are very difficult to grasp and act upon. So I will be very grateful for any help. Here is the full set of errors: 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\MSVCRT.lib: 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\OLDNAMES.lib: 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\msvcprt.lib: 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\LIBCMT.lib: 1LIBCMT.lib(setlocal.obj) : error LNK2005: _setlocale already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tidtable.obj) : error LNK2005: __encode_pointer already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tidtable.obj) : error LNK2005: __encoded_null already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tidtable.obj) : error LNK2005: __decode_pointer already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tolower.obj) : error LNK2005: _tolower already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(invarg.obj) : error LNK2005: __set_invalid_parameter_handler already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(invarg.obj) : error LNK2005: __invalid_parameter_noinfo already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crt0dat.obj) : error LNK2005: __amsg_exit already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crt0dat.obj) : error LNK2005: __initterm_e already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crt0dat.obj) : error LNK2005: _exit already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crtheap.obj) : error LNK2005: __malloc_crt already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(dosmap.obj) : error LNK2005: __errno already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(file.obj) : error LNK2005: __iob_func already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(mlock.obj) : error LNK2005: __unlock already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(mlock.obj) : error LNK2005: _lock already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(winxfltr.obj) : error LNK2005: __CppXcptFilter already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crt0init.obj) : error LNK2005: ___xi_a already defined in MSVCRT.lib(cinitexe.obj) 1LIBCMT.lib(crt0init.obj) : error LNK2005: ___xi_z already defined in MSVCRT.lib(cinitexe.obj) 1LIBCMT.lib(crt0init.obj) : error LNK2005: ___xc_a already defined in MSVCRT.lib(cinitexe.obj) 1LIBCMT.lib(crt0init.obj) : error LNK2005: ___xc_z already defined in MSVCRT.lib(cinitexe.obj) 1LIBCMT.lib(hooks.obj) : error LNK2005: "void __cdecl terminate(void)" (?terminate@@YAXXZ) already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(winsig.obj) : error LNK2005: _signal already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(fflush.obj) : error LNK2005: _fflush already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tzset.obj) : error LNK2005: __tzset already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(_ctype.obj) : error LNK2005: _isspace already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(_ctype.obj) : error LNK2005: _iscntrl already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(getenv.obj) : error LNK2005: _getenv already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(strnicmp.obj) : error LNK2005: __strnicmp already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(osfinfo.obj) : error LNK2005: __get_osfhandle already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(osfinfo.obj) : error LNK2005: __open_osfhandle already defined in MSVCRT.lib(MSVCR90.dll) [...] 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\MSVCRT.lib: 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _toupper already defined in LIBCMT.lib(toupper.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _isalpha already defined in LIBCMT.lib(_ctype.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _wcschr already defined in LIBCMT.lib(wcschr.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _isdigit already defined in LIBCMT.lib(_ctype.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _islower already defined in LIBCMT.lib(ctype.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: __doserrno already defined in LIBCMT.lib(dosmap.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _strftime already defined in LIBCMT.lib(strftime.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _isupper already defined in LIBCMT.lib(_ctype.obj) [...] 1Finished searching libraries 1 Creating library z:\PCdev\Test\RK_Demo_2004\plugins\Test.bundle\contents\windows\Test.lib and object z:\PCdev\Test\RK_Demo_2004\plugins\Test.bundle\contents\windows\Test.exp 1Searching libraries [...] 1Finished searching libraries 1LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library 1LINK : warning LNK4098: defaultlib 'LIBCMT' conflicts with use of other libs; use /NODEFAULTLIB:library 1LIBCMT.lib(crt0.obj) : error LNK2001: unresolved external symbol _main

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  • Connect two client sockets

    - by Hernán Eche
    Good morning, let's say Java has two kind of sockets... server sockets "ServerSocket" client sockets or just "Socket" ////so Simple ! Imagine the situation of two processes: X Client <-- Y Server The server process Y : has a "ServerSocket", that is listening to a TCP port The client process X : send a connection request through a -client type- "Socket" X ////so Simple ! then the accept() method (in server Y) returns a new client type "Socket", when it occurs, great the two Sockets get "interconected", so the -client socket- in client process, is connected with the -client socket- in the server process then (reading/writing in socket X is like reading/writing in socket Y, and viceversa. ) TWO CLIENT SOCKETS GET INTERCONECTED!! ////so Simple ! BUT... (there is always a But..) What if I create the two CLIENT sockets in same process, and I want to get them "interconected" ? ////mmm Complex =(... even posible? Let's say how to have TWO CLIENT SOCKETS GET INTERCONECTED WITHOUT using an intermediate ServerSocket ? I 've solved it.. by creating two threads for continuously reading A and writing B, and other for reading B and writng A... but I think could be a better way..(or should!) (Those world-energy-consuming threads are not necessary with the client-server aproach) Any help or advice would be appreciated!! Thanks

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  • Bloated PDF created by TCPDF

    - by Yogi Yang 007
    In a web app developed in PHP we are generating Quotations and Invoices (which are very simple and of single page) using TCPDF lib. The lib is working just great but it seems to generate very large PDF files. For example in our case it is generating PDF files as large as 4 MB (+/- a few KB). How to reduce this bloating of PDF files generated by TCPDF? Here is code snippet that I am using ob_start(); include('quote_view_bag_pdf.php'); //This file is valid HTML file with PHP code to insert data from DB $quote = ob_get_contents(); //Capture the content of 'quote_view_bag_pdf.php' file and store in variable ob_end_clean(); //Code to generate PDF file for this Quote //This line is to fix a few errors in tcpdf $k_path_url=''; require_once('tcpdf/config/lang/eng.php'); require_once('tcpdf/tcpdf.php'); // create new PDF document $pdf = new TCPDF(); // remove default header/footer $pdf->setPrintHeader(false); $pdf->setPrintFooter(false); // add a page $pdf->AddPage(); // print html formated text $pdf->writeHtml($quote, true, 0, true, 0); //Insert Variables contents here. //Build Out File Name $pdf_out_file = "pdf/Quote_".$_POST['quote_id']."_.pdf"; //Close and output PDF document $pdf->Output($pdf_out_file, 'F'); $pdf->Output($pdf_out_file, 'I'); /////////////// enter code here Hope this code fragment will give some idea?

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  • Mysterious socket / HttpWebRequest timeouts

    - by Daniel Mošmondor
    I have a great app for capturing shoutcast streams :-) . So far, it worked with a charm on dozens of machines, and never exhibited behaviour I found now, which is ultimately very strange. I use HttpWebRequest to connect to the shoutcast server and when I connect two streams, everything's OK. When I go for third one, response = (HttpWebResponse)request.GetResponse(); throws with Connection Timeout exception. WTF? I must point out that I had to create .config for the application in order to allow my headers to be sent out from the application, otherwise it wouldn't work at all. Here it is: <?xml version="1.0" encoding="utf-8" ?> <configuration> <system.net> <settings> <httpWebRequest useUnsafeHeaderParsing = "true" /> </settings> </system.net> </configuration> Does any of this ring a bell?

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  • How do I find the most “Naturally" direct route using A-star (A*)

    - by Greg B
    I have implemented the A* algorithm in AS3 and it works great except for one thing. Often the resulting path does not take the most “natural” or smooth route to the target. In my environment the object can move diagonally as inexpensively as it can move horizontally or vertically. Here is a very simple example; the start point is marked by the S, and the end (or finish) point by the F. | | | | | | | | | | |S| | | | | | | | | x| | | | | | | | | | x| | | | | | | | | | x| | | | | | | | | | x| | | | | | | | | | x| | | | | | | | | | |F| | | | | | | | | | | | | | | | | | | | | | | | | | | | | As you can see, during the 1st round of finding, nodes [0,2], [1,2], [2,2] will all be added to the list of possible node as they all have a score of N. The issue I’m having comes at the next point when I’m trying to decide which node to proceed with. In the example above I am using possibleNodes[0] to choose the next node. If I change this to possibleNodes[possibleNodes.length-1] I get the following path. | | | | | | | | | | |S| | | | | | | | | | |x| | | | | | | | | | |x| | | | | | | | | | |x| | | | | | | | |x| | | | | | | | |x| | | | | | | | |F| | | | | | | | | | | | | | | | | | | | | | | | | | | | | And then with possibleNextNodes[Math.round(possibleNextNodes.length / 2)-1] | | | | | | | | | | |S| | | | | | | | | |x| | | | | | | | | x| | | | | | | | | | x| | | | | | | | | | x| | | | | | | | | | x| | | | | | | | | | |F| | | | | | | | | | | | | | | | | | | | | | | | | | | | | All these paths have the same cost as they all contain the same number of steps but, in this situation, the most sensible path would be as follows... | | | | | | | | | | |S| | | | | | | | | |x| | | | | | | | | |x| | | | | | | | | |x| | | | | | | | | |x| | | | | | | | | |x| | | | | | | | | |F| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Is there a formally accepted method of making the path appear more sensible rather than just mathematically correct?

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  • How do I detect whether the sample supplied by VideoSink.OnSample() is right-side up?

    - by Ken Smith
    We're currently using the Silverlight VideoSink to capture video from users' local webcams, kinda like so: protected override void OnSample(long sampleTime, long frameDuration, byte[] sampleData) { if (FrameShouldBeSubmitted()) { byte[] resampledData = ResizeFrame(sampleData); mediaController.SetVideoFrame(resampledData); } } Now, on most of the machines that we've tested, the video sample provided in the byte[] sampleData parameter is upside-down, i.e., if you try to take the RGBA data and turn it into, say, a WriteableBitmap, the bitmap will be upside-down. That's odd, but fairly easy to correct, of course -- you just have to reverse the array as you encode it. The problem is that at least on some machines (e.g., the single Macintosh in our test environment), the video sample provided is no longer upside-down, but right-side up, and hence, flipping the image actually results in an image that's received upside-down on the far side. I reported this to MS as a bug, but their (terse) response was that it was "As Designed". Further attempts at clarification have so far been ignored. Now, I'll grant that it's kinda entertaining to imagine the discussions behind this design decision: "OK, just to make it interesting, let's play the video rightside up on a Mac, but let's turn it upside down for Windows!" "Great idea!" "Yeah, that'll keep those developers guessing!" But beyond that, I can't find this, umm, "feature" documented anywhere, nor can I find any documentation on how one is supposed to be able to tell that a given video sample is upside down or rightside up. Any thoughts on how to tell this?

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  • Prototype's Ajax.Updater not actually updating on IE7.

    - by Ben S
    I am trying to submit a form using Ajax.Updater and have the result of that update a div element in my page. Everything works great in IE6, FF3, Chrome and Opera. However, In IE7 it sporadically works, but more often than not, it just doesn't seem to do anything. Here's the javascript: function testcaseHistoryUpdate(testcase, form) { document.body.style.cursor = 'wait'; var param = Form.serialize(form); new Ajax.Updater("content", "results/testcaseHistory/" + testcase, { onComplete: function(transport) {document.body.style.cursor = 'auto'}, parameters: param, method: 'post' } ); } I've verified using alert() calls that param is set to what I expect. I've read in many places that IE7 caches aggressively and that it might be the root cause, however every after adding the following to my php response, it still doesn't work. header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); header("Cache-Control: no-store, no-cache, must-revalidate"); header("Cache-Control: post-check=0, pre-check=0", false); header("Pragma: no-cache"); To further try to fix a caching issue I've tried adding a bogus parameter which just gets filled with a random value to have different parameters for every call, but that didn't help. I've also found this, where UTF-8 seemed to be causing an issue with IE7, but my page is clearly marked: <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> Does anyone have any idea what could be wrong with IE7 as opposed to the other browsers I tested to cause this kind of issue?

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  • TextMate tips for Rails Development

    - by Ganesh Shankar
    Working on Rails code for a bit has started me on the spiral into obsessively customising my dev environment (I say obsessive as at the last Rails meetup I went to there was some guy who was raving about shaving milliseconds off each line of code and therefore upto half an hour a day... I hope I don't become that guy...) I spend most of my time in TextMate so it seemed like a great place to start the optimising... So far I've added a few TextMate bundles like Git Bundle, Project Plus and the theme from Railscasts. I've noticed some of the other TextMate users I've come into contact with using heaps of nifty keyboard shortcuts and other plugins to help make their dev environment more friendly. Looking around the net, I was a bit overwhelmed by the amount of shortcuts and plugins available... So I was hoping to hear from other Rails developers out there: What are some good keyboard shortcuts and plugins that I should be aware of for TextMate with specific reference to Rails Development? I've read this question on SO: http://stackoverflow.com/questions/99807/what-are-some-useful-textmate-shortcuts but I was wondering if there was something a bit more specific to Rails development.

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  • How to get local ActiveMQ broker to "mirror" a queue on a remote ActiveMQ broker?

    - by T.K.
    I have a local ActiveMQ broker which is on an unreliable internet connection, and also a remote ActiveMQ broker in a reliable datacenter. I have already sorted out a "store and forward" setup so that outgoing messages are sent to the remote broker when the Internet connection is available. That alone works great, but when messages are outbound. However, now I have to do the reverse. Here is the scenario: A new message appears in the remote ActiveMQ broker. The message is put into a specific queue. In a few minutes, the Internet connection becomes available to the local ActiveMQ broker. The local broker should then be able to pull the message from the remote broker, and place it in its own local queue. Local consumers will then be able to see the message. So in essence, I need the local broker to become a subscribed consumer to the remote queue. I have looked through the ActiveMQ documentations but I can't find anything yet about how to do this in the .xml configuration file. Is this what I should be looking for? See: "ActiveMQ: JMS to JMS Bridge". Any advice and tips would be highly appreciated.

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  • Open Source CMS (.Net vs Java)

    - by CmsAndDotNetKindaGuy
    I must say up-front that this is not a strictly programming-related question and a very opinionated one. I am the lead developer of the dominant .Net CMS in my country and I don't like my own product :). Managerial decisions over what is important or not and large chunks of legacy code done before I joined gives me headache every day I go for work. Anyway, having a vast amount of experience in web industry and a very good grasp of C# and programming practices I'm designing my own CMS the past few months. Now the problem is that I'm an open source kinda guy so I have a dilemma. Should I use C# and .Net which has crippled multi-platform support or should I drop .Net entirely and start learning Java where I can create a truly open-source and cross-platform CMS? Please don't answer that I should contribute to an existing open source CMS. I ruled that out after spending a great deal of time searching for something similar in structure to what I have in mind. I am not a native speaker, so feel free to correct my syntax or rephrase my question.

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  • Does anyone know of a good Commercial WPF Web Browser Control?

    - by VoidDweller
    I have an MDI WPF app that I need to add web content too. At first, great it looks like I have 2 options built into the framework the Frame control and the WebBrowser control. Given that this is an MDI app it doesn't take long to discover that neither of these will work. The WebBrowser control wraps up the IE WebBrowser ActiveX Control which uses the Win32 graphics pipeline. The "Airspace" issue pretty much sums this up as "Sorry, the layouts will not play nice together". Yes, I have thought about taking snapshots of the web content rendering these and mapping the mouse and keyboard events back to the browser control, but I can't afford the performance penalty and I really don't have time to write and thoroughly test it. I have looked for third party controls, but so far I have only found Chris Cavanagh's WPF Chromium Web Browser control. Which wraps up Awesomium 1.5. Together these are very cool, they play nice with the WPF layouts. But they do not meet my performance requirements. They are VERY HEAVY on memory consumption and not to friendly with CPU usage either. Not to mention still quite buggy. I'll elaborate if you are interested. So, do any of you know of a stable performant WPF web browser control? Thanks.

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  • Why Is Bottom Half of Custom UIActionSheet with UIDatePicker Disabled?

    - by Gorgando
    Everything seems to be working great with my UIActionSheet that contains a UIDatePicker except that the bottom half of the DatePicker is disabled. Visually there is a shadow that makes the bottom half of the picker darker than the top half. Everything in the bottom half is disabled and I can't for the life of me figure out how to enable it. I also noticed in my other "normal" UIActionSheets that just contain buttons, the bottom half of the cancel buttons are disabled. This is the code for my custom UIActionSheet: self.datePickerView = [[UIDatePicker alloc] init]; self.datePickerView.datePickerMode = UIDatePickerModeDate; self.actionSheet = [[UIActionSheet alloc] initWithTitle:@"Choose a Follow-up Date" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:@"Done", nil]; [self.actionSheet showInView:self.view]; [self.actionSheet addSubview:self.datePickerView]; [self.actionSheet sendSubviewToBack:self.datePickerView]; [self.actionSheet setBounds:CGRectMake(0,0,320, 500)]; CGRect pickerRect = self.datePickerView.bounds; pickerRect.origin.y = -95; self.datePickerView.bounds = pickerRect; I've tried several things including sendSubviewToBack, BringSubviewToFront, etc but I have not had any luck. I appreciate your help!

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  • How do I create Twitter style URLs for my app - Using existing application or app redesign - Ruby on

    - by bgadoci
    I have developed a blog application of sorts that I am trying to allow other users to take advantage of (for free and mostly for family). I wondering if the authentication I have set up will allow for such a thing. Here is the scenario. Currently the application allows for users to sign up for an account and when they do so they can create blog posts and organize those posts via tags. The application displays no data publicly (another words, you have to login to see anything). To gain access you have to create an account and even after you do, you cannot see anyone else's information as the applications filters using the current_user method and displays in the /posts/index.html.erb page. This would be great if a user only wanted to blog and share it with themselves, not really what I am looking for. My question has two parts (hopefully I won't make anyone mad by not putting these into two questions) Is it possible for a particular users data to live at www.myapplication.com/user without moving everything to the /user/show.html.erb file? Is it possible to make some of that information (living at the URL) public but still require login for create and destroy actions. Essentially, exactly like twitter. I am just curious if I can get from where I am (using the current_user methods across controllers to display in /posts/index.html.erb) to where I want to be. My fear is that I have to redesign the app such that the user data lives in the /user/show.html.erb page. Thoughts? UPDATE: I am using Clearance for authentication by Thoughtbot. I wonder if there is something I can set in the vendored gem path to represent the /posts/index.html.erb code as the /user/id code and replace id with the user name.

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  • How do I create Twitter style URL's for my app - Using existing application or app redesign - Ruby o

    - by bgadoci
    I have developed a blog application of sorts that I am trying to allow other users to take advantage of (for free and mostly for family). I wondering if the authentication I have set up will allow for such a thing. Here is the scenario. Currently the application allows for users to sign up for an account and when they do so they can create blog posts and organize those posts via tags. The application displays no data publicly (another words, you have to login to see anything). To gain access you have to create an account and even after you do, you cannot see anyone else's information as the applications filters using the current_user method and displays in the /posts/index.html.erb page. This would be great if a user only wanted to blog and share it with themselves, not really what I am looking for. My question has two parts (hopefully I won't make anyone mad by not putting these into two questions) Is it possible for a particular users data to live at www.myapplication.com/user without moving everything to the /user/show.html.erb file? Is it possible to make some of that information (living at the URL) public but still require login for create and destroy actions. Essentially, exactly like twitter. I am just curious if I can get from where I am (using the current_user methods across controllers to display in /posts/index.html.erb) to where I want to be. My fear is that I have to redesign the app such that the user data lives in the /user/show.html.erb page. Thoughts?

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  • Is there a standard mapping between JSON and Protocol Buffers?

    - by Daniel Earwicker
    From a comment on the announcement blog post: Regarding JSON: JSON is structured similarly to Protocol Buffers, but protocol buffer binary format is still smaller and faster to encode. JSON makes a great text encoding for protocol buffers, though -- it's trivial to write an encoder/decoder that converts arbitrary protocol messages to and from JSON, using protobuf reflection. This is a good way to communicate with AJAX apps, since making the user download a full protobuf decoder when they visit your page might be too much. It may be trivial to cook up a mapping, but is there a single "obvious" mapping between the two that any two separate dev teams would naturally settle on? If two products supported PB data and could interoperate because they shared the same .proto spec, I wonder if they would still be able to interoperate if they independently introduced a JSON reflection of the same spec. There might be some arbitrary decisions to be made, e.g. should enum values be represented by a string (to be human-readable a la typical JSON) or by their integer value? So is there an established mapping, and any open source implementations for generating JSON encoder/decoders from .proto specs?

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  • Problem in Adding Button in Dynamically created Gridview with Auto Generated Columns True

    - by Anuj Koundal
    Hi Guys I am using Gridview with auto columns true to Display data, I am using Dataset to bind Grid as Dataset gives me Crosstab/Pivot data on Dropdown's slected Index changed Here is the code I am using protected void ddl_SelectedIndexChanged(object sender, EventArgs e) { fillGridview(Convert.ToInt32(ddl.SelectedValue)); bindHeader(); } //===================//Bind GridColumns //================= void bindHeader() { GridViewRow headerRow; headerRow = gridDashboard.HeaderRow; foreach (GridViewRow grdRow in gridDashboard.Rows) { int count = grdRow.Cells.Count; int siteId=Convert.ToInt32(grdRow.Cells[4].Text); for (int j = 0; j < count; j++) { if (j >= 5) { int id=Convert.ToInt32(grdRow.Cells[j].Text); string headText =headerRow.Cells[j].Text.ToString(); string[] txtArray=headText.Split('-'); int stepId=Convert.ToInt32(txtArray[0]); //headerRow.Cells[j].Text = txtArray[1].ToString(); string HeadName = txtArray[1].ToString(); LinkButton lb = new LinkButton(); lb.Style.Add("text-decoration","none"); if (id > 0) { string Details = getDashBoardSiteStepDetails(id); lb.Text = Details; } else { lb.Text = " - "; } lb.CommandName = "HideColumn"; lb.CommandArgument = siteId.ToString() + "/" + stepId.ToString(); grdRow.Cells[j].Controls.Add(lb); } } } int cnt = headerRow.Cells.Count; for (int j = 0; j { if (j >= 5) { string hdText = headerRow.Cells[j].Text.ToString(); string[] txtArray = hdText.Split('-'); // int stepId = Convert.ToInt32(txtArray[0]); headerRow.Cells[j].Text = txtArray[1].ToString(); } } In above code I am trying to add button dynamically in each cell and button in text have text of that cell, IT works Great but when I click the link button created, link buttons Disappear and the original text of the cell Displays. please help I also want to create onclick of these link buttons Thanks

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  • How to invalidate the OutputCache in a webfarm?

    - by Pure.Krome
    Hi folks, i've got a website that uses OutputCache attribute to cache pages. Works great. Now, I'm in the middle of R&D'ing scaling up this site to be in a web farm. Along with the usual suspects for webfarm pain ... I've noticed (pretty quickly/obviously) that the OutputCache from Server_A doesn't invalidate the OutputCache from Server_B .. if a try and invalidate a single server's OutputCache. This makes total sense - how can S_A 'tell' S_B to invalidate when they are physically 2 seperate machines, etc? So - what are our options? Velocity? I understand this will move the caching to a different layer .. which means that the final result (output) will always be required to be determined .. as opposed to the OutputCache whic remembers the final output content (yes, varby gives different versions, etc.. which is totally fine). So even though the poco or business objects are all sync'd, there's still that last rendering effort required (even if it's tiny .. compared to the effort to generate/sync business objects). So yeah .. not sure of the options here and what other people do?

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  • How can I do batch image processing with ImageJ in Java or clojure?

    - by Robert McIntyre
    I want to use ImageJ to do some processing of several thousand images. Is there a way to take any general imageJ plugin and apply it to hundreds of images automatically? For example, say I want to take my thousand images and apply a polar transformation to each--- A polar transformation plugin for ImageJ can be found here: http://rsbweb.nih.gov/ij/plugins/polar-transformer.html Great! Let's use it. From: [http://albert.rierol.net/imagej_programming_tutorials.html#How%20to%20automate%20an%20ImageJ%20dialog] I find that I can apply a plugin using the following: (defn x-polar [imageP] (let [thread (Thread/currentThread) options ""] (.setName thread "Run$_polar-transform") (Macro/setOptions thread options) (IJ/runPlugIn imageP "Polar_Transformer" ""))) This is good because it suppresses the dialog which would otherwise pop up for every image. But running this always brings up a window containing the transformed image, when what I want is to simply return the transformed image. The stupidest way to do what I want is to just close the window that comes up and return the image which it was displaying. Does what I want but is absolutely retarded: (defn x-polar [imageP] (let [thread (Thread/currentThread) options ""] (.setName thread "Run$_polar-transform") (Macro/setOptions thread options) (IJ/runPlugIn imageP "Polar_Transformer" "") (let [return-image (IJ/getImage)] (.hide return-image) return-image))) I'm obviously missing something about how to use imageJ plugins in a programming context. Does anyone know the right way to do this? Thanks, --Robert McIntyre

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  • Issue with CAAnimation and CALayer Transforms

    - by Brian
    I have a CALayer that I want to animate across the screen. I have created two methods: one slide open the layer and one to slide close. These both work by assigning a property to the layer's transform property. Now I want to use a CAKeyFrameAnimation to slide open the layer. I got this working so the layer slides open, but now I can't slide the layer close using my old method. I am trying to figure out why this is. Any help would be great. Code: - (id)init { if( self = [super init] ) { bIsOpen = NO; closeTransform = self.transform; openTransform = CATransform3DMakeTranslation(-235.0, 0.0, 0.0); } return self; } - (void)closeMenu { if( bIsOpen ) { self.transform = closeTransform; bIsOpen = !bIsOpen; } } - (void)openMenu { if( !bIsOpen ) { CAKeyframeAnimation *closeAnimation = [CAKeyframeAnimation animationWithKeyPath:@"transform"]; closeAnimation.duration = 1.0; closeAnimation.removedOnCompletion = NO; closeAnimation.fillMode = kCAFillModeForwards; closeAnimation.values = [NSArray arrayWithObjects:[NSValue valueWithCATransform3D:closeTransform],[NSValue valueWithCATransform3D:openTransform],nil]; closeAnimation.timingFunctions = [NSArray arrayWithObject:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]]; [self addAnimation:closeAnimation forKey:@"transform"]; bIsOpen = !bIsOpen; } }

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  • Anything speaking against the bitnami.org Ruby/Rails/Redmine Stack?

    - by Pekka
    I am looking to set up a Redmine server on a Windows virtual machine on my local workstation. (Background in this related question.) I have zero knowledge of Ruby nor Rails, and while Redmine may be the opportunity to dip into those platforms somewhat, my first goal is to get it running as quickly and easily as possible. For that, I am eyeing the Bitnami Redmine Package. It promises point-and-click install, and a self-contained environment with everything you need. Apart from the learning factor, are there any serious limitations this method implies? Any serious cutdowns in customizability? I will be wanting to customize the template right away, for example, and install plugins. The package looks o.k. to me but before I install it, I was curious to know whether anybody would advise against it and why. Edit: The first impression is great. From 0 to a working Redmine installation in twelve minutes! Wow.

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  • django : Serving static files through nginx

    - by PlanetUnknown
    I'm using apache+mod_wsgi for django. And all css/js/images are served through nginx. For some odd, reason when others/friends/colleagues try accessing the site, jquery/css is not getting loaded for them, hence the page looks jumbled up. My html files use code like this - <link rel="stylesheet" type="text/css" href="http://x.x.x.x:8000/css/custom.css"/> <script type="text/javascript" src="http://1x.x.x.x:8000/js/custom.js"></script> My nginx configuration in sites-available is like this - server { listen 8000; server_name localhost; access_log /var/log/nginx/aa8000.access.log; error_log /var/log/nginx/aa8000.error.log; location / { index index.html index.htm; } location /static/ { autoindex on; root /opt/aa/webroot/; } } There is a directory /opt/aa/webroot/static/ which have corresponding css & js directories. The odd thing is that the pages show fine when I access them. I have cleared my cache/etc, but the page loads fine for me, from various browsers. Also, I don't see 404 any error in the nginx log files. Any pointers would be great.

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