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  • Invoking ADO.NET from MATLAB

    - by Andrew Shepherd
    It's possible to call .NET from MATLAB, so I thought I would try to use ADO.NET to connect to a database. I seem to have hit a blocking problem - anytime you try and create a Command object, it throws an error. You can try this yourself: >> NET.addAssembly('System.Data'); >> sqlconn = System.Data.SqlClient.SqlConnection(); >> sqlconn.State ans = Closed >> % So far, so good >> sqlcmd = System.Data.SqlClient.SqlCommand(); ??? Error using ==> System.Data.SqlClient.SqlCommand 'Connection' is already defined as a property. >> Does anyone have some insight into this? It seems like a pure and simple bug on MATLAB's part - maybe it happens with every .NET class that happens to have a property called "Connection". Should I just throw in the towel and give up on using MATLAB to talk to a database using .NET?

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  • PHP File upload fails with blank screen when size exceeds 742 KB.

    - by user284839
    Hi friends, This is one of the most bizarre errors I've come across. So I've written a little file upload web app for my friend and it works fine for any file less than or equal to 742kB in size. Needless to say, I arrived at this precise number based on relentless testing. Weird part is that if the file size is just a few KB more, for example 743 or 750, I get an error saying "MySQL has gone away". But if it is 1MB or more, then I just get a blank screen. And it happens in less than 2 seconds after I hit the upload button. So it doesn't look like a time-out to me. I checked out the PHP.ini file for post size and upload size, they are all set to 5 MB or more. And the timeout is set to 60 seconds. The uploaded file sits in MySQL database in a field of datatype mediumblob. I tried changing that to longblob. But that didn't help either. Any help? Thanks for reading, Girish

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  • Spring-json problem in Liferay with Spring 2.5

    - by Jesus Benito
    Hi all, I am trying to use the library spring-json.1.3.1 in a project that has been done with Liferay 5.1.2 which includes Spring 2.5. Following the project website instructions, I managed to make the request hit in my controller, but at the moment of returning the json object back through the modelAndView object it fails with the following error: java.lang.IllegalArgumentException at com.liferay.portlet.MimeResponseImpl.setContentType(MimeResponseImpl.java:162) I have checked Liferays source code, and it checks that contentType that its being set is in a harcoded list,if it not it will throw a IllegalArgumentException that it is exactly what os happening. This is my view resolver code: <bean id="xmlFileViewResolver" class="org.springframework.web.servlet.view.XmlViewResolver"> /WEB-INF/context/views.xml 1 My views.xml code: <beans> <bean name="jsonView" class="org.springframework.web.servlet.view.json.JsonView"/> And my controller: @SuppressWarnings("unchecked") @Override public ModelAndView handleRenderRequest(RenderRequest arg0, RenderResponse arg1) throws Exception { Map model = new HashMap(); model.put("firstname", "Peter"); model.put("secondname", "Schmitt"); return new ModelAndView("jsonView", model); } Any ideas?

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  • Zend Cache is not retrieving cache items after some period of time

    - by Phil
    Hi, I am using Zend Cache with page caching but it seems to miss the cache after a period of time. For a while it is OK, but I come back tomorrow and hit the page, it doesn't fetch the contents from the cache. why? $frontendOptions = array( 'content_type_memorization' => true, // This remembers the headers, needed for images 'lifetime' => NULL, // cache lifetime forever 'automatic_serialization' => true, 'automatic_cleaning_factor' => 0 ); $myPageCache = new Zend_Cache_Frontend_Page(array( 'debug_header' => false, 'automatic_cleaning_factor'=>0, 'content_type_memorization' => true, 'default_options' => array( 'cache' => true, 'cache_with_get_variables' => true, 'cache_with_post_variables' => true, 'cache_with_session_variables' => true, 'cache_with_cookie_variables' => true ))); $backendOptions = array('cache_dir' => '.' . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR); $cache = Zend_Cache::factory($myPageCache, 'File', $frontendOptions, $backendOptions); $cacheKey = hash('md5', "cache_" . $cachePath); // cachePath is the key I use for the cache if(!$cache->start($cacheKey)) { I output html here $cache->end(); }

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  • How do I make C++/wxWidgets code accessible to a wxPython app?

    - by Jon Cage
    I have a code library which is written in C++ and makes extensive use of the wxWidgets library. I'm now trying to wrap my library (currently using SWIG) so that it's callable from wxPython, but I've hit a wall: ------ Build started: Project: MyLibLib, Configuration: Release_SWIG_OutputForBin Win32 ------ Performing Custom Build Step In order to function correctly, please ensure the following environment variables are correctly set: PYTHON_INCLUDE: C:\Python26\include PYTHON_LIB: C:\Python26\libs\python26.lib d:\MyProject\Software\MyLib\trunk\MyLib>C:\swigwin-2.0.0\swig.exe -python d:\MyProject\Software\MyLib\trunk\MyLibLib\MyLib.i d:\MyProject\Software\MyLib\trunk\MyLib>if errorlevel 1 goto VCReportError d:\MyProject\Software\MyLib\trunk\MyLib>goto VCEnd Compiling... MyLib_wrap.c C:\wxWidgets-2.8.10\include\wx/wxchar.h(886) : warning C4273: '_snprintf' : inconsistent dll linkage c:\Program Files\Microsoft Visual Studio 9.0\VC\include\stdio.h(358) : see previous definition of '_snprintf' C:\wxWidgets-2.8.10\include\wx/buffer.h(127) : error C2061: syntax error : identifier 'wxCharBuffer' C:\wxWidgets-2.8.10\include\wx/buffer.h(127) : error C2059: syntax error : ';' C:\wxWidgets-2.8.10\include\wx/buffer.h(127) : error C2449: found '{' at file scope (missing function header?) C:\wxWidgets-2.8.10\include\wx/buffer.h(127) : error C2059: syntax error : '}' C:\wxWidgets-2.8.10\include\wx/buffer.h(127) : error C2059: syntax error : ')' C:\wxWidgets-2.8.10\include\wx/buffer.h(129) : error C2061: syntax error : identifier 'wxWritableCharBuffer' C:\wxWidgets-2.8.10\include\wx/buffer.h(129) : error C2059: syntax error : ';' C:\wxWidgets-2.8.10\include\wx/buffer.h(129) : error C2059: syntax error : ':' C:\wxWidgets-2.8.10\include\wx/buffer.h(134) : error C2061: syntax error : identifier 'wxWCharBuffer' C:\wxWidgets-2.8.10\include\wx/buffer.h(134) : error C2059: syntax error : ';' C:\wxWidgets-2.8.10\include\wx/buffer.h(134) : error C2449: found '{' at file scope (missing function header?) C:\wxWidgets-2.8.10\include\wx/buffer.h(134) : error C2059: syntax error : '}' C:\wxWidgets-2.8.10\include\wx/buffer.h(134) : fatal error C1004: unexpected end-of-file found Build log was saved at "file://d:\MyProject\Software\MyLib\trunk\MyLib\Release_SWIG_OutputForBin\BuildLog.htm" MyLibLib - 13 error(s), 1 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== Is there a particular way I should be going about this? I spent some time googling for similar errors, but got none which suggests I'm probably barking up the wrong tree here...? [Edit] Is a dll and ctypes the answer?

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  • Flex AS3: Assign a button's upSkin property with a remote file dynamically?

    - by aaron.lovelace
    I am building a Flex application with ActionScript 3. Unfortunately I've hit a wall with this one... I would like to be able to apply an upSkin to my dynamically generated button like this: //this theSkin variable is dynamic in my app, but for this example it's a simple string var theSkin:String = "http://www.mypicturedomain.com/images/myimage.gif"; var navBtn:Button = new Button(); navBtn.id = "thumb1"; navBtn.width = 60; navBtn.height = 45; //skin the button navBtn.setStyle("upSkin", theSkin); //add the button to my canvas myCanvas.addChild(navBtn); When I attempt this, I get this error: TypeError: Error #1034: Type Coercion failed: cannot convert flash.display::Loader@3dac941 to Class. How do I skin this button with my image dynamically? A couple of things to consider: The upSkin image must be remote. It can't be local. The button must be generated dynamically (it's in a for loop). Any help/ideas would be much appreciated at this point!

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  • Flex AS3: Assign a button's upSkin property with a remote file dynamically?

    - by Aaron
    I am building a Flex application with ActionScript 3. Unfortunately I've hit a wall with this one... I would like to be able to apply an upSkin to my dynamically generated button like this: //this theSkin variable is dynamic in my app, but for this example it's a simple string var theSkin:String = "http://www.mypicturedomain.com/images/myimage.gif"; var navBtn:Button = new Button(); navBtn.id = "thumb1"; navBtn.width = 60; navBtn.height = 45; //skin the button navBtn.setStyle("upSkin", theSkin); //add the button to my canvas myCanvas.addChild(navBtn); When I attempt this, I get this error: TypeError: Error #1034: Type Coercion failed: cannot convert flash.display::Loader@3dac941 to Class. How do I skin this button with my image dynamically? A couple of things to consider: The upSkin image must be remote. It can't be local. The button must be generated dynamically (it's in a for loop). Any help/ideas would be much appreciated at this point!

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  • Why AQTime slows execution even when profiling is not on, and can anything be done for it?

    - by Antti Suni
    Hi! In AQTime for Delphi, it boasts to be very fast to get to the trouble spots by using areas and triggers etc. But it seems to me, that especially if you have very much code in the areas to profile, then the execution slows down dramatically even when the profiling is NOT on. For example, if I want to profile a specific routine late in the program flow, but don't know what is called there, I'd think to put this routine only as a trigger and the initial status for threads as Off, and then choose "Full check by Routines/Lines". However, when I do this, the program execution slows down heavily already before the trigger routine has ever been hit. For example if the "preparation flow" takes around 5 minutes without AQTime, then when I run it with profiling disabled, it already has been running for 30 minutes and still goes even when I know the trigger has not yet even been reached. I know I can try to workaround this by reducing the amount of routines/lines profiled, but it is not really a good solution for me, since I'd like to profile all of them once I get to the actual trigger routine. Also another, often better workaround is to start the application without AQTime and then use Attach to Process after the "preparation flow" has finished, but this works well only when the execution pauses in GUI in the proper place or otherwise provides a suitable time frame for doing the attaching. In all cases this is not the case. Any comments on why this is so and is there anything else to do than just try to reduce the code from the areas or attach later to the process?

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  • externalizing junit stub objects.

    - by Ajay
    Hi!    In my project we created stub files for testing junits in java(factories) itself. However, we have to externalize these stubs. After seeing a number of serializers/deserializers, we settled on using XStream to serialize and deserialize these stub objects. XStream works like a charm. Its pretty good at what it claims to be. Previously, we had a single factory class say AFactory which produced all the stubs needed for testing different test cases. Now when externalizing each of the stub generated, we hit a road block. We had to create 1 xml file for each stub produced by the factory. For example, public final class AFactory{ public static A createStub1(){ /*Code here */} public static A createStub2(){ /*Code here */} public static A createStub3(){ /*Code here */} } Now, when trying to move this stubs to external files, we had to create 1 xml file for each stub created(A-stub1.xml, A-stub2.xml and A-stub3.xml). The problem with this approach is that, it leads to proliferation of xml stub files. I was thinking, how about keeping all the stubs related to a single bean class in a single xml file. <?xml version="1.0"?> <stubs class="A"> <stub id="stub1"> <!-- Here comes the externalized xml stub representation --> </stub> <stub id="stub2"> </stub> </stubs> Is there a framework which allows you keep all the stub in xml representation in a single xml file as above ? Or What do you guys suggest should be the right approach to adhere to ?

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  • Setting corelocation results to NSNumber object parameters

    - by Dan Ray
    This is a weird one, y'all. - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { CLLocationCoordinate2D coordinate = newLocation.coordinate; self.mark.longitude = [NSNumber numberWithDouble:coordinate.longitude]; self.mark.latitude = [NSNumber numberWithDouble:coordinate.latitude]; NSLog(@"Got %f %f, set %f %f", coordinate.latitude, coordinate.longitude, self.mark.latitude, self.mark.longitude); [manager stopUpdatingLocation]; manager.delegate = nil; if (self.waitingForLocation) { [self completeUpload]; } } The latitude and longitude in that "mark" object are synthesized parameters referring to NSNumber iVars. In the simulator, my NSLog output for that line in the middle there reads: 2010-05-28 15:08:46.938 EverWondr[8375:207] Got 37.331689 -122.030731, set 0.000000 -44213283338325225829852024986561881455984640.000000 That's a WHOLE lot further East than 1 Infinite Loop! The numbers are different on the device, but similar--lat is still zero and long is a very unlikely high negative number. Elsewhere in the controller I'm accepting a button press and uploading a file (an image I just took with the camera) with its geocoding info associated, and I need that self.waitingForLocation to inform the CLLocationManager delegate that I already hit that button and once its done its deal, it should go ahead and fire off the upload. Thing is, up in the button-click-receiving method, I test see if CL is finished by testing self.mark.latitude, which seems to be getting set zero...

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  • Is there something like a "long running offline transaction" for NHibernate or any other ORM?

    - by Vilx-
    In essence this is a followup of this question. I'm beginning to feel that I should give up the whole idea, but I'll give it one more shot. What I want is pretty much like a DB transaction. It should track my changes to the DB and then in the end allow me to either commit or rollback them. If I insert an object, I should get it back in my next (appropriate) SELECT query. If I delete it, future SELECT queries should not return it. Etc. But there is one catch - this transaction would be very long running. It would start when the user opened a form (I'm talking about Windows Forms here), and the commit/rollback would be when the user closed it(with OK/Cancel). So it could take anywhere between seconds and days. This requirement rules out a standard DB transaction because that would lock the tables/rows it touched, and other users wouldn't be able to use the system. Also the transaction should not commit ANY changes to the DB until it was really committed. So if one user makes some changes, others don't see them until OK button is hit. This prevents errors in case the computer crashes or is disconnected from the network. I'm quite OK if the solution puts constraints on my model (I'm using MSSQL 2008, btw). I can design the DB/code any way I like. I'm also fine with the idea that a commit could fail because someone already modified one of the objects my transaction touched. Is there anything like this? I looked at NHibernate.Burrow, but I'm not sure that that's the thing I want. Added: It's the very beginning of the project so I'm not tied to NHibernate. I started out with it but I can still change easily.

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  • IIS 7.5 refuses to load 64-bit assembly - possible CAS problem?

    - by Rune
    Hi, I just downloaded the Orchard CMS, opened it up in VS2008 and hit F5: Everything runs fine. I then created a website in IIS 7.5 and pointed it to the web project's directory and set up permissions correctly (I hope). I downloaded the 64-bit version System.Data.SQLite as suggested here: Orchard Work Item 14798 and here: SO: Could not load file or assembly 'System.Data.SQLite'. The site runs in Full Trust. When I point my browser to the site running through IIS I get Could not load file or assembly 'System.Data.SQLite, Version=1.0.65.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139' or one of its dependencies. Failed to grant minimum permission requests. I don't know much about Code Access Security (if that is even what's at play here), so I am at a loss here. What am I doing wrong / not understanding / not seeing? How do I provide appropriate permissions and to whom / what? Is there any hope of ever deploying this application to a hoster where I am only allowed to run in Medium Trust? Any help, pointers or suggestions would be greatly appreciated. Thanks. NOTE: the question is not why this initially worked when run through Cassini. The answer to that question is contained in the answer to the SO question referenced above.

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  • 48-bit bitwise operations in Javascript?

    - by randomhelp
    I've been given the task of porting Java's Java.util.Random() to JavaScript, and I've run across a huge performance hit/inaccuracy using bitwise operators in Javascript on sufficiently large numbers. Some cursory research states that "bitwise operators in JavaScript are inherently slow," because internally it appears that JavaScript will cast all of its double values into signed 32-bit integers to do the bitwise operations (see https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Operators/Bitwise_Operators for more on this.) Because of this, I can't do a direct port of the Java random number generator, and I need to get the same numeric results as Java.util.Random(). Writing something like this.next = function(bits) { if (!bits) { bits = 48; } this.seed = (this.seed * 25214903917 + 11) & ((1 << 48) - 1); return this.seed >>> (48 - bits); }; (which is an almost-direct port of the Java.util.Random()) code won't work properly, since Javascript can't do bitwise operations on an integer that size.) I've figured out that I can just make a seedable random number generator in 32-bit space using the Lehmer algorithm, but the trick is that I need to get the same values as I would with Java.util.Random(). What should I do to make a faster, functional port?

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  • Need help with Javascript....I think

    - by Mikey
    I'm trying to bypass going through a bunch of menus, to get to the data I want directly. Here are the links I want to go to: http://factfinder.census.gov/servlet/MapItDrawServlet?geo_id=14000US53053072904&tree_id=4001&context=dt&_lang=en&_ts=288363511701 factfinder.census.gov/servlet/MapItDrawServlet?geo_id=14000US53025981400&tree_id=4001&context=dt&_lang=en&_ts=288363511701 factfinder.census.gov/servlet/MapItDrawServlet?geo_id=14000US53067011620&tree_id=4001&context=dt&_lang=en&_ts=288363511701 Notice, if you pull that up right now, you simply see a GIF outline of the map, however there is no map data "behind" it. However, if you go to: factfinder.census.gov/servlet/DTGeoSearchByListServlet?ds_name=DEC_2000_SF1_U&_lang=en&_ts=288392632118 Select Geographic Type: ..... ..... Census Tract Select a State: Washington Select a County: Pierce Select one or more geographic areas: Census Tract 729.04 Hit "Map It" The map will load perfectly. Also, until you close your browser, any of the other links will work perfectly. What I want to do, is be able to bypass these 5 steps, but obviously something is preventing this. Is there a feasible workaround? I have my own domain that I would be able to upload new Javascript or HTML files or whatever is needed.

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  • Hibernate not releasing data base connections

    - by cedar715
    Following is the configuration details: <property name="hibernateProperties"> <props> <prop key="hibernate.dialect"> org.hibernate.dialect.Oracle9iDialect </prop> <prop key="hibernate.show_sql">false</prop> <prop key="hibernate.cache.provider_class"> org.hibernate.cache.OSCacheProvider </prop> <prop key="hibernate.cache.use_second_level_cache"> true </prop> <!-- <prop key="hibernate.hbm2ddl.auto">update</prop>--> <!-- HIBERNATE CONNECTION POOLING!!--> <prop key="c3p0.acquire_increment">5</prop> <prop key="c3p0.idle_test_period">100</prop> <!-- seconds --> <prop key="c3p0.max_statements">5</prop> <prop key="c3p0.min_size">15</prop> <prop key="c3p0.max_size">100</prop> <prop key="c3p0.timeout">100</prop> <!-- seconds --> </props> </property> Our application is developed through Spring & Hibernate. Once we bring the application up and hit it, its opening 140 connections and not releasing it. Our DAO looks like this: import org.springframework.orm.hibernate3.support.HibernateDaoSupport; ... public class ActionDAO extends HibernateDaoSupport implements IActionDAO { public Action findById(ActionPK actionPK) { return (Action) getHibernateTemplate().get(Action.class, actionPK); } public void add(Action action) { getHibernateTemplate().save(action); } }

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  • Python beginner having trouble running code

    - by Protean
    For some reason this code will not seem to run in the interpreter. When I hit F5 nothing happens, not even the debugger seems to recognize it. I assume it has something to do with the class, as when removed the interpreter seems to recognize the rest of the code. Please tell me what I am doing wrong. Edit: I have restarted the interpreter multiple times, any other piece of code I try to load runs fine, just this one is having trouble. print ('Why won't this work?') class sorting_class: def __init__(self): self.order = ['a', 'b', 'c', 'd'] self.globali = 0 self.orderi = 0 self.sortedlist = [] def sort(self, array): carry, leave = [] for arrayi in array: print ('run', arrayi) if self.order[self.orderi] == arrayi[self.globali]: carry.append(arrayi) else: if self.globali != 0: leave.append(arrayi) return carry, leave def srt(self, array): globalii = 0 carry, leave = my.sort(array) while len(self.sortedlist) != len(array): if len(self.carry) == 1: self.sortedlist.append(carry) arrayt = leave self.globali = 1 self.orderi = 0 carry, leave = my.sort(arrayt) elif len(self.carry) == 0: if len(self.leave) != 0: arrayt = leave self.globali = 1 self.orderi += 1 my.sort(arrayt) else: self.arrayt globalii += 1 self.orderi = globalii self.globali = 0 my.sort(arrayt) self.orderi = 0 else: arrayt = carry carry = [] self.globali += 1 carry, leave += my.sort(arrayt) my = sorting_class() x = ['ac', 'bc' ,'ab', 'da'] my.srt(x)

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  • For "draggable" div tags that are NOT nested: JQuery/JavaScript div tag “containment” approach/algor

    - by Pete Alvin
    Background: I've created an online circuit design application where .draggable() div tags are containers that contain smaller div containers and so forth. Question: For any particular div tag I need to quickly identify if it contains other div tags (that may in turn contain other div tags). -- Since the div tags are draggable, in the DOM they are NOT nested inside each other but I think are absolutely positioned. So I think that a "hit testing" approach is the only way to determine containment, unless there is some "secret" routine built-in somewhere that could help with this. I've searched JQuery and I don't see any built-in routine for this. Does anyone know of an algorithm that's quicker than O(n^2)? Seems like I have to walk the list of div tags in an outer loop (n) and have an inner loop (another n) to compare against all other div tags and do a "containment test" (position, width, height), building a list of contained div tags. That's n-squared. Then I have to build a list of all nested div tags by concatenating contained lists. So the total would be O(n^2)+n. There must be a better way?

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  • Codesign returns exit code of 11 for xcode iphone project -- can't find documentation on exit code 1

    - by Larry Freeman
    Hi Everyone, I'm new to iPhone development. I am trying to get Xcode to run an application on a phone. The app works fine in the simulator. Initially I hit the error: The executable was signed with invalid entitlements I followed the steps here: http://stackoverflow.com/questions/1074546/the-executable-was-signed-with-invalid-entitlements But now I am getting an exit code of 11. I checked the documentation on codesign but I can't find any mention of an exit code 11 (http://gemma.apple.com/mac/library/documentation/Darwin/Reference/ManPages/man1/codesign.1.html) Below is the log I am getting. Any help is greatly appreciated. I am using iPhone OS 3.1.3. Build HubPages of project HubPages with configuration Debug CodeSign build/Debug-iphoneos/HubPages.app cd /Users/larryfreeman/src/hub/mobile/HubPages/build/iphone setenv IGNORE_CODESIGN_ALLOCATE_RADAR_7181968 /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/codesign_allocate setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /usr/bin/codesign -f -s "iPhone Developer: Larry Freeman (LT6G4W62Z2)" --resource-rules=/Users/larryfreeman/src/hub/mobile/HubPages/build/iphone/build/Debug-iphoneos/HubPages.app/Entitlements.plist --entitlements /Users/larryfreeman/src/hub/mobile/HubPages/build/iphone/build/HubPages.build/Debug-iphoneos/HubPages.build/HubPages.xcent /Users/larryfreeman/src/hub/mobile/HubPages/build/iphone/build/Debug-iphoneos/HubPages.app Command /usr/bin/codesign failed with exit code 11 Thanks! -Larry

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  • When writing a game, should you make objects/enemies/etc. have unique ID numbers?

    - by SLC
    I have recently encountered some issues with merely passing references to objects/enemies in a game I am making, and am wondering if I am using the wrong approach. The main issue I have is disposing of enemies and objects, when other enemies or players may still have links to them. For example, if you have a Rabbit, and a Wolf, the Wolf may have selected the Rabbit to be its target. What I am doing, is the wolf has a GameObject Target = null; and when it decides it is hungry, the Target becomes the Rabbit. If the Rabbit then dies, such as another wolf killing it, it cannot be removed from the game properly because this wolf still has a reference to it. In addition, if you are using a decoupled approach, the rabbit could hit by lightning, reducing its health to below zero. When it next updates itself, it realises it has died, and is removed from the game... but there is no way to update everything that is interested in it. If you gave every enemy a unique ID, you could simply use references to that instead, and use a central lookup class that handled it. If the monster died, the lookup class could remove it from its own index, and subsequently anything trying to access it would be informed that it's dead, and then they could act accordingly. Any thoughts on this?

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  • Treebeard admin in Django

    - by Sharath
    I've setup Treebeard in Django and everything seems to have gone well. I tried to setup the admin system and I can see my models being presented in the admin interface. However, when I try to add new data using the admin interface, I get the following error in my template. The code still works fine, and I did a check in my DB and the data seems to be inserted properly. However, the view doesn't seem to load properly. Any idea about what is causing this?? The exception am getting is.. Caught an exception while rendering: Failed lookup for key [request] in u'[{\'action_index\': 0, \'block\': , , , , , , ]}, {\'block\': , , , ], , , , , \n \', ], , ], , , , ], , , \n \', , , , , , , , , ], , ], \n \']}, {\'cl\': , \'root_path\': None, \'actions_on_bottom\': False, \'title\': u\'Select album to change\', \'has_add_permission\': True, \'media\': , \'is_popup\': False, \'action_form\': , \'actions_on_top\': True, \'app_label\': \'gallery\'}, {\'MEDIA_URL\': \'\'}, {\'LANGUAGES\': ((\'ar\', \'Arabic\'), (\'bn\', \'Bengali\'), (\'bg\', \'Bulgarian\'), (\'ca\', \'Catalan\'), (\'cs\', \'Czech\'), (\'cy\', \'Welsh\'), (\'da\', \'Danish\'), (\'de\', \'German\'), (\'el\', \'Greek\'), (\'en\', \'English\'), (\'es\', \'Spanish\'), (\'et\', \'Estonian\'), (\'es-ar\', \'Argentinean Spanish\'), (\'eu\', \'Basque\'), (\'fa\', \'Persian\'), (\'fi\', \'Finnish\'), (\'fr\', \'French\'), (\'ga\', \'Irish\'), (\'gl\', \'Galician\'), (\'hu\', \'Hungarian\'), (\'he\', \'Hebrew\'), (\'hi\', \'Hindi\'), (\'hr\', \'Croatian\'), (\'is\', \'Icelandic\'), (\'it\', \'Italian\'), (\'ja\', \'Japanese\'), (\'ka\', \'Georgian\'), (\'ko\', \'Korean\'), (\'km\', \'Khmer\'), (\'kn\', \'Kannada\'), (\'lv\', \'Latvian\'), (\'lt\', \'Lithuanian\'), (\'mk\', \'Macedonian\'), (\'nl\', \'Dutch\'), (\'no\', \'Norwegian\'), (\'pl\', \'Polish\'), (\'pt\', \'Portuguese\'), (\'pt-br\', \'Brazilian Portuguese\'), (\'ro\', \'Romanian\'), (\'ru\', \'Russian\'), (\'sk\', \'Slovak\'), (\'sl\', \'Slovenian\'), (\'sr\', \'Serbian\'), (\'sv\', \'Swedish\'), (\'ta\', \'Tamil\'), (\'te\', \'Telugu\'), (\'th\', \'Thai\'), (\'tr\', \'Turkish\'), (\'uk\', \'Ukrainian\'), (\'zh-cn\', \'Simplified Chinese\'), (\'zh-tw\', \'Traditional Chinese\')), \'LANGUAGE_BIDI\': False, \'LANGUAGE_CODE\': \'en-us\'}, {}, {\'perms\': , \'messages\': [], \'user\': }, {}]' This happens after I hit the save button in Django admin. This is my admin.py implementation.. class MP_Album_Admin(TreeAdmin): pass admin.site.register(Album,MP_Album_Admin)

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  • dojo.io.iframe erroring when uploading a file

    - by Grant Collins
    Hi, Hit an interesting problem today when trying to upload an image file < 2MB using dojo.io.iframe. My function to process the form is called, but before the form is posted to the server I am getting the following error: TypeError: ifd.getElementsByTagName("textarea")[0] is undefined My function that is used to action the post of the form is : function uploadnewlogo(){ var logoDiv = dojo.byId('userlogo'); var logoMsg = dojo.byId('uploadmesg'); //prep the io frame to send logo data. dojo.io.iframe.send({ url: "/users/profile/changelogo/", method: "post", handleAs: "text", form: dojo.byId('logoUploadFrm'), handle: function(data,ioArgs){ var response = dojo.fromJson(data); if(response.status == 'success'){ //first clear the image //dojo.style(logoDiv, "display", "none"); logoDiv.innerHTML = ""; //then we update the image logoDiv.innerHTML = response.image; }else if(response.status == 'error'){ logoMsg.innerHTML = data.mesg; }else{ logoMsg.innerHTML = '<div class="error">Whoops! We can not process your image.</div>'; } }, error: function(data, ioArgs){ logoMsg.innerHTML = '<div class="error">' + data + '</div>'; } }); } The form is very basic with just a File input component and a simple button that calls this bit of javascript and dojo. I've got very similar code in my application that uploads word/pdf documents and that doesn't error, but for some reason this does. Any ideas or pointers on what I should try to get this to work without errors? Oh I'm using php and Zend framework for the backend if that has anything to do with it, but I doubt it as it's not even hitting the server before it fails. Many thanks, Grant

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  • The cost of passing by shared_ptr

    - by Artem
    I use std::tr1::shared_ptr extensively throughout my application. This includes passing objects in as function arguments. Consider the following: class Dataset {...} void f( shared_ptr< Dataset const > pds ) {...} void g( shared_ptr< Dataset const > pds ) {...} ... While passing a dataset object around via shared_ptr guarantees its existence inside f and g, the functions may be called millions of times, which causes a lot of shared_ptr objects being created and destroyed. Here's a snippet of the flat gprof profile from a recent run: Each sample counts as 0.01 seconds. % cumulative self self total time seconds seconds calls s/call s/call name 9.74 295.39 35.12 2451177304 0.00 0.00 std::tr1::__shared_count::__shared_count(std::tr1::__shared_count const&) 8.03 324.34 28.95 2451252116 0.00 0.00 std::tr1::__shared_count::~__shared_count() So, ~17% of the runtime was spent on reference counting with shared_ptr objects. Is this normal? A large portion of my application is single-threaded and I was thinking about re-writing some of the functions as void f( const Dataset& ds ) {...} and replacing the calls shared_ptr< Dataset > pds( new Dataset(...) ); f( pds ); with f( *pds ); in places where I know for sure the object will not get destroyed while the flow of the program is inside f(). But before I run off to change a bunch of function signatures / calls, I wanted to know what the typical performance hit of passing by shared_ptr was. Seems like shared_ptr should not be used for functions that get called very often. Any input would be appreciated. Thanks for reading. -Artem

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  • .NET Working with Locking and Threads

    - by aherrick
    Work on this small test application to learn threading/locking. I have the following code, I would think that the line should only write to console once. However it doesn't seem to be working as expected. Any thoughts on why? What I'm trying to do is add this Lot object to a List, then if any other threads try and hit that list, it would block. Am i completely misusing lock here? class Program { static void Main(string[] args) { int threadCount = 10; //spin up x number of test threads Thread[] threads = new Thread[threadCount]; Work w = new Work(); for (int i = 0; i < threadCount; i++) { threads[i] = new Thread(new ThreadStart(w.DoWork)); } for (int i = 0; i < threadCount; i++) { threads[i].Start(); } // don't let the console close Console.ReadLine(); } } public class Work { List<Lot> lots = new List<Lot>(); private static readonly object thisLock = new object(); public void DoWork() { Lot lot = new Lot() { LotID = 1, LotNumber = "100" }; LockLot(lot); } private void LockLot(Lot lot) { // i would think that "Lot has been added" should only print once? lock (thisLock) { if(!lots.Contains(lot)) { lots.Add(lot); Console.WriteLine("Lot has been added"); } } } }

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  • Single-player pong game

    - by Jam
    I am just starting out learning pygame and livewires, and I'm trying to make a single-player pong game, where you just hit the ball, and it bounces around until it passes your paddle (located on the left side of the screen and controlled by the mouse), which makes you lose. However, I keep getting the error: "Cannot have more than on Screen object", which I can find no references to online really, and I can't make sense of it. I want to eventually make the game more complicated, but I need to make it work first. Help please! Here's the code so far: from livewires import games games.init(screen_width=640, screen_height=480, fps=50) class Paddle(games.Sprite): image=games.load_image("paddle.bmp") def __init__(self): super(Paddle, self).__init__(image=Paddle.image, y=games.mouse.y, left=0) self.score=games.Text(value=0, size=25, top=5, right=games.screen.width-10) games.screen.add(self.score) def update(self): self.y=games.mouse.y self.check_collide() def check_collide(self): for ball in self.overlapping_sprites: self.score.value+=1 self.score.right=games.screen.width-10 ball.handle_collide() class Ball(games.Sprite): image=games.load_image("ball.bmp") speed=1 def __init__(self, x, y=90): super(Ball, self).__init__(image=Ball.image, x=x, y=y, dx=Ball.speed, dy=Ball.speed) def update(self): if self.left<0: self.end_game() self.destroy() def handle_collide(self): if self.right>games.screen.width: self.dx=-self.dx if self.bottom>games.screen.height or self.top<0: self.dy=-self.dy def ball_destroy(self): self.destroy() def main(): background_image=games.load_image("background.bmp", transparent=False) games.screen.background=background_image the_ball=Ball() games.screen.add(the_ball) the_paddle=Paddle() games.screen.add(the_paddle) games.mouse.is_visible=False games.screen.event_grab=True games.screen.mainloop() main()

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  • Strategies for Accessing a Application with a COM API From PHP

    - by Alan Storm
    Background: Experienced PHP developer with a mostly *nix background. I'm writing a PHP application that needs to interact with a proprietary 3rd party system. The 3rd party system is Windows only. The PHP application will be living on a separate Linux based system The 3rd party application has been described as having a "COM API" that I'll need to talk to from the PHP application. What does this look like architecturally speaking? I'm starting with the COM section of the PHP manual, but I have specific questions. Specific Questions: Can I talk directly to a COM API from a PHP application running on another server? If so, how? (what PHP extensions would I need, or what protocols/PHP functions would I be using to talk to the API) If the answer to number 2 is no, I'd assume I'd need some kind of application on the Windows machine that can talk to COM, and then a service on the windows machine I can hit with PHP. Are there prebuilt frameworks for this kind of thing? Is this all nonsense and/or did I say something exceedingly stupid? (Quite possible, as I'm a little fuzzy on what "COM" does and doesn't cover) I'm obviously not looking for a full solution here, I'm just trying to get a general idea of what is and isn't possible and what kind of things I'll want to Google for. Thanks!

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