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  • Rails does not display error messages on a form in a custom method

    - by slythic
    Hi all, I've created a custom method called checkout in my app. I create an order (which is done my adding products to my "cart"), assign it to my client, and then I head to my checkout screen where I confirm the items and enter their customer order number and complete the order (submit). Everything works great except that it doesn't display error messages. I'm able to display a flash error notice (seen in complete_order method) when things go wrong but it doesn't specify the details like a normal form would. The error messages should appear if the customer order number is not unique for that client. Below is the custom method (checkout) related code. Order Model: validates_uniqueness_of :customer_order_number, :scope => :client_id Orders_controller: def checkout @order = current_order end def complete_order @order = current_order respond_to do |format| if @order.update_attributes(params[:order]) @order.complete #sets submitted datetime and state to 'complete' flash[:notice] = 'Thank you! Your order is being processed.' format.html { redirect_to( products_path ) } format.xml { head :ok } else flash[:error] = 'Please review your items' #added to confirm an error is present format.html { redirect_to( checkout_path ) } format.xml { render :xml => @order.errors, :status => :unprocessable_entity } end end end And the form in the checkout view: <% form_for @order, :url => { :controller => "orders", :action => "complete_order" } do |f| %> <%= f.error_messages %> <%= f.text_field :customer_order_number, :label => "Purchase Order Number" %> <p> <%= f.submit 'Complete Order', :confirm => 'Are you sure?' %> <small> or <%= link_to 'cancel', current_cart_path %></small> </p> <% end %> Any idea how I can display the specific error messages? Thank you in advance! -Tony

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  • failed to get i915 symbols, graphics turbo disabled error on boot

    - by Gaurav Butola
    Whenever I boot my laptop, I see this message and it makes the boot process very slow as my screen stays black for a long time before this message appears. It shows just for a split second but today It got worst when my system couldn't boot and stuck on this error, I did several reboots but still couldn't pass this boot error message, then after sometime it fixed itself and now I can use my system as normal. I didn't pay much attention to the error when It was there for just a split second and making my boot process slow, but now that it has stopped me from booting into my system, I would like to know why this error occurring. Error-- ...failed to get i915 symbols, graphics turbo disabled....

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  • What is the cause of these Visual Studio 2010 errors & warnings?

    - by volpack
    I don't know the cause of these errors I am receiving from Visual Studio 2010. This is the code from my program from line 343 to line 408: int create_den_from_img(char *img_file_name_part, int xlen, int ylen, int zlen ) { IplImage* imgs = 0; char str[80]; unsigned char *data,*imgdata; /* allocating memory */ data = (unsigned char *) malloc(xlen * ylen * zlen * sizeof(unsigned char) ); if(data==NULL) { printf("error in allocating memory \n"); exit(1); } /* Getting the filename & iterating through tiff images */ for(int k = 0; k < zlen; k++) { int count=2; int tmp=k+1; while(tmp/10) { count=count-1; tmp=tmp/10; } switch(count) { case 2:sprintf(str,"%s00%d.tif",img_file_name_part,k+1); break; case 1:sprintf(str,"%s0%d.tif",img_file_name_part,k+1); break; default:sprintf(str,"%s%d.tif",img_file_name_part,k+1); break; } printf("%s\n",str); /* Loading Image using OpenCV */ imgs=cvLoadImage(str,-1); if(imgs==NULL) { printf("error in opening image \n"); exit(1); } imgdata=(uchar *)imgs->imageData; for(int j =0; j < ylen; j++) { for(int i =0; i < xlen; i++) { data[ k*xlen*ylen + j*xlen + i ] = imgdata[ j*xlen+i ]; } } cvReleaseImage(&imgs ); } /* populating `data` variable is done. So, calling `write_den` */ if(write_den("test.den",data,xlen,ylen,zlen)==0) { printf("Error in creating den file\n"); exit(1); } printf("Den file created\n"); } These are the list of errors: Error 3 error C2143: syntax error : missing ';' before 'type' c:\examples\denfile.c 358 1 MTP_TEST Error 4 error C2143: syntax error : missing ';' before 'type' c:\examples\denfile.c 358 1 MTP_TEST Error 5 error C2143: syntax error : missing ')' before 'type' c:\examples\denfile.c 358 1 MTP_TEST Error 6 error C2143: syntax error : missing ';' before 'type' c:\examples\denfile.c 358 1 MTP_TEST Error 7 error C2065: 'k' : undeclared identifier c:\examples\denfile.c 358 1 MTP_TEST Error 9 error C2065: 'k' : undeclared identifier c:\examples\denfile.c 358 1 MTP_TEST Error 10 error C2059: syntax error : ')' c:\examples\denfile.c 358 1 MTP_TEST Error 11 error C2143: syntax error : missing ';' before '{' c:\examples\denfile.c 359 1 MTP_TEST Error 12 error C2065: 'k' : undeclared identifier c:\examples\denfile.c 361 1 MTP_TEST Error 13 error C2065: 'k' : undeclared identifier c:\examples\denfile.c 370 1 MTP_TEST Error 14 error C2065: 'k' : undeclared identifier c:\examples\denfile.c 372 1 MTP_TEST Error 15 error C2065: 'k' : undeclared identifier c:\examples\denfile.c 374 1 MTP_TEST Error 16 error C2143: syntax error : missing ';' before 'type' c:\examples\denfile.c 388 1 MTP_TEST Error 17 error C2143: syntax error : missing ';' before 'type' c:\examples\denfile.c 388 1 MTP_TEST Error 18 error C2143: syntax error : missing ')' before 'type' c:\examples\denfile.c 388 1 MTP_TEST Error 19 error C2143: syntax error : missing ';' before 'type' c:\examples\denfile.c 388 1 MTP_TEST Error 20 error C2065: 'j' : undeclared identifier c:\examples\denfile.c 388 1 MTP_TEST Error 22 error C2065: 'j' : undeclared identifier c:\examples\denfile.c 388 1 MTP_TEST Error 23 error C2059: syntax error : ')' c:\examples\denfile.c 388 1 MTP_TEST Error 24 error C2143: syntax error : missing ';' before '{' c:\examples\denfile.c 389 1 MTP_TEST Error 25 error C2143: syntax error : missing ';' before 'type' c:\examples\denfile.c 390 1 MTP_TEST Error 26 error C2143: syntax error : missing ';' before 'type' c:\examples\denfile.c 390 1 MTP_TEST Error 27 error C2143: syntax error : missing ')' before 'type' c:\examples\denfile.c 390 1 MTP_TEST Error 28 error C2143: syntax error : missing ';' before 'type' c:\examples\denfile.c 390 1 MTP_TEST Error 29 error C2065: 'i' : undeclared identifier c:\examples\denfile.c 390 1 MTP_TEST Error 31 error C2065: 'i' : undeclared identifier c:\examples\denfile.c 390 1 MTP_TEST Error 32 error C2059: syntax error : ')' c:\examples\denfile.c 390 1 MTP_TEST Error 33 error C2143: syntax error : missing ';' before '{' c:\examples\denfile.c 391 1 MTP_TEST Error 34 error C2065: 'k' : undeclared identifier c:\examples\denfile.c 392 1 MTP_TEST Error 35 error C2065: 'j' : undeclared identifier c:\examples\denfile.c 392 1 MTP_TEST Error 36 error C2065: 'i' : undeclared identifier c:\examples\denfile.c 392 1 MTP_TEST Error 37 error C2065: 'j' : undeclared identifier c:\examples\denfile.c 392 1 MTP_TEST Error 38 error C2065: 'i' : undeclared identifier c:\examples\denfile.c 392 1 MTP_TEST I've been getting these kind of errors all day long. Sometimes the code compiles, while at other time it doesn't. Its really annoying.

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  • dpkg error : old pre-removal script returned error exit status 102

    - by Siva Prasad Varma
    I am unable to install or remove a package on my Ubuntu 10.04 due to the following error. $ sudo apt-get autoremove Password: Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: busybox 0 upgraded, 0 newly installed, 1 to remove and 9 not upgraded. 1 not fully installed or removed. Need to get 0B/212kB of archives. After this operation, 627kB disk space will be freed. Do you want to continue [Y/n]? y Selecting previously deselected package nscd. (Reading database ... 235651 files and directories currently installed.) Preparing to replace nscd 2.11.1-0ubuntu7.8 (using .../nscd_2.11.1-0ubuntu7.8_amd64.deb) ... invoke-rc.d: not a symlink: /etc/rc2.d/S76nscd dpkg: warning: old pre-removal script returned error exit status 102 dpkg - trying script from the new package instead ... invoke-rc.d: not a symlink: /etc/rc2.d/S76nscd dpkg: error processing /var/cache/apt/archives/nscd_2.11.1-0ubuntu7.8_amd64.deb (--unpack): subprocess new pre-removal script returned error exit status 102 update-rc.d: warning: /etc/rc2.d/S76nscd is not a symbolic link invoke-rc.d: not a symlink: /etc/rc2.d/S76nscd dpkg: error while cleaning up: subprocess installed post-installation script returned error exit status 102 Errors were encountered while processing: /var/cache/apt/archives/nscd_2.11.1-0ubuntu7.8_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) What should I do to resolve this error. I have tried sudo dpkg --remove --force-remove-reinstreq nscd but it did not work.

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  • How to resolve - dpkg error : old pre-removal script returned error exit status 102

    - by Siva Prasad Varma
    I am unable to install or remove a package on my Ubuntu 10.04 due to the following error. $ sudo apt-get autoremove Password: Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: busybox 0 upgraded, 0 newly installed, 1 to remove and 9 not upgraded. 1 not fully installed or removed. Need to get 0B/212kB of archives. After this operation, 627kB disk space will be freed. Do you want to continue [Y/n]? y Selecting previously deselected package nscd. (Reading database ... 235651 files and directories currently installed.) Preparing to replace nscd 2.11.1-0ubuntu7.8 (using .../nscd_2.11.1-0ubuntu7.8_amd64.deb) ... invoke-rc.d: not a symlink: /etc/rc2.d/S76nscd dpkg: warning: old pre-removal script returned error exit status 102 dpkg - trying script from the new package instead ... invoke-rc.d: not a symlink: /etc/rc2.d/S76nscd dpkg: error processing /var/cache/apt/archives/nscd_2.11.1-0ubuntu7.8_amd64.deb (--unpack): subprocess new pre-removal script returned error exit status 102 update-rc.d: warning: /etc/rc2.d/S76nscd is not a symbolic link invoke-rc.d: not a symlink: /etc/rc2.d/S76nscd dpkg: error while cleaning up: subprocess installed post-installation script returned error exit status 102 Errors were encountered while processing: /var/cache/apt/archives/nscd_2.11.1-0ubuntu7.8_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) What should I do to resolve this error? I have tried sudo dpkg --remove --force-remove-reinstreq nscd but it did not work.

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  • Android: ActivityThread.performLaunchActivity error

    - by fordays
    Hi, I'm getting an ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord,Intent) error each time I boot up my program in the debugger. The program won't even start up! Any help would be greatly appreciated! I'm very new to this environment. Let me know if you need anymore information/code to help me out. Here is my logcat: 06-09 11:16:26.848: ERROR/vold(27): Error opening switch name path '/sys/class/switch/test2' (No such file or directory) 06-09 11:16:26.848: ERROR/vold(27): Error bootstrapping switch '/sys/class/switch/test2' (No such file or directory) 06-09 11:16:26.848: ERROR/vold(27): Error opening switch name path '/sys/class/switch/test' (No such file or directory) 06-09 11:16:26.848: ERROR/vold(27): Error bootstrapping switch '/sys/class/switch/test' (No such file or directory) 06-09 11:16:37.887: ERROR/MemoryHeapBase(53): error opening /dev/pmem: No such file or directory 06-09 11:16:37.887: ERROR/SurfaceFlinger(53): Couldn't open /sys/power/wait_for_fb_sleep or /sys/power/wait_for_fb_wake 06-09 11:16:37.927: ERROR/libEGL(53): couldn't load <libhgl.so> library (Cannot load library: load_library[984]: Library 'libhgl.so' not found) 06-09 11:16:38.407: ERROR/libEGL(64): couldn't load <libhgl.so> library (Cannot load library: load_library[984]: Library 'libhgl.so' not found) 06-09 11:16:41.358: ERROR/BatteryService(53): Could not open '/sys/class/power_supply/usb/online' 06-09 11:16:41.367: ERROR/BatteryService(53): Could not open '/sys/class/power_supply/battery/batt_vol' 06-09 11:16:41.367: ERROR/BatteryService(53): Could not open '/sys/class/power_supply/battery/batt_temp' 06-09 11:16:41.667: ERROR/EventHub(53): could not get driver version for /dev/input/mouse0, Not a typewriter 06-09 11:16:41.667: ERROR/EventHub(53): could not get driver version for /dev/input/mice, Not a typewriter 06-09 11:16:41.797: ERROR/System(53): Failure starting core service 06-09 11:16:41.797: ERROR/System(53): java.lang.SecurityException 06-09 11:16:41.797: ERROR/System(53): at android.os.BinderProxy.transact(Native Method) 06-09 11:16:41.797: ERROR/System(53): at android.os.ServiceManagerProxy.addService(ServiceManagerNative.java:146) 06-09 11:16:41.797: ERROR/System(53): at android.os.ServiceManager.addService(ServiceManager.java:72) 06-09 11:16:41.797: ERROR/System(53): at com.android.server.ServerThread.run(SystemServer.java:162) 06-09 11:16:41.797: ERROR/AndroidRuntime(53): Crash logging skipped, no checkin service 06-09 11:16:42.777: ERROR/LockPatternKeyguardView(53): Failed to bind to GLS while checking for account 06-09 11:16:46.557: ERROR/ActivityThread(111): Failed to find provider info for com.google.settings 06-09 11:16:46.577: ERROR/ActivityThread(111): Failed to find provider info for com.google.settings 06-09 11:16:49.087: ERROR/ApplicationContext(53): Couldn't create directory for SharedPreferences file shared_prefs/wallpaper-hints.xml 06-09 11:16:51.146: ERROR/ActivityThread(108): Failed to find provider info for android.server.checkin 06-09 11:16:54.266: ERROR/ActivityThread(108): Failed to find provider info for android.server.checkin 06-09 11:16:54.416: ERROR/ActivityThread(108): Failed to find provider info for android.server.checkin 06-09 11:16:56.336: ERROR/MediaPlayerService(31): Couldn't open fd for content://settings/system/notification_sound 06-09 11:16:56.356: ERROR/MediaPlayer(53): Unable to to create media player 06-09 11:16:56.637: ERROR/AndroidRuntime(201): Uncaught handler: thread main exiting due to uncaught exception 06-09 11:16:56.757: ERROR/AndroidRuntime(201): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.svgeeks.kidneytest/com.svgeeks.kidneytest.KidneyTest}: java.lang.ClassCastException: android.widget.EditText 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.os.Handler.dispatchMessage(Handler.java:99) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.os.Looper.loop(Looper.java:123) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.main(ActivityThread.java:4203) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at java.lang.reflect.Method.invokeNative(Native Method) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at java.lang.reflect.Method.invoke(Method.java:521) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at dalvik.system.NativeStart.main(Native Method) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): Caused by: java.lang.ClassCastException: android.widget.EditText 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at com.svgeeks.kidneytest.KidneyTest.onCreate(KidneyTest.java:57) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 06-09 11:16:56.757: ERROR/AndroidRuntime(201): ... 11 more 06-09 11:16:56.876: ERROR/dalvikvm(201): Unable to open stack trace file '/data/anr/traces.txt': Permission denied

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  • SQL SERVER – FIX: ERROR Msg 5169, Level 16: FILEGROWTH cannot be greater than MAXSIZE for file

    - by pinaldave
    I am writing this blog post right after I resolve this error for one of the system. Recently one of the my friend who is expert in infrastructure as well private cloud was working on SQL Server installation. Please note he is seriously expert in what he does but he has never worked SQL Server before and have absolutely no experience with its installation. He was modifying database file and keep on getting following error. As soon as he saw me he asked me where is the maxfile size setting so he can change. Let us quickly re-create the scenario he was facing. Error Message: Msg 5169, Level 16, State 1, Line 1 FILEGROWTH cannot be greater than MAXSIZE for file ‘NewDB’. Creating Scenario: CREATE DATABASE [NewDB] ON PRIMARY (NAME = N'NewDB', FILENAME = N'D:\NewDB.mdf' , SIZE = 4096KB, FILEGROWTH = 1024KB, MAXSIZE = 4096KB) LOG ON (NAME = N'NewDB_log', FILENAME = N'D:\NewDB_log.ldf', SIZE = 1024KB, FILEGROWTH = 10%) GO Now let us see what exact command was creating error for him. USE [master] GO ALTER DATABASE [NewDB] MODIFY FILE ( NAME = N'NewDB', FILEGROWTH = 1024MB ) GO Workaround / Fix / Solution: The reason for the error is very simple. He was trying to modify the filegrowth to much higher value than the maximum file size specified for the database. There are two way we can fix it. Method 1: Reduces the filegrowth to lower value than maxsize of file USE [master] GO ALTER DATABASE [NewDB] MODIFY FILE ( NAME = N'NewDB', FILEGROWTH = 1024KB ) GO Method 2: Increase maxsize of file so it is greater than new filegrowth USE [master] GO ALTER DATABASE [NewDB] MODIFY FILE ( NAME = N'NewDB', FILEGROWTH = 1024MB, MAXSIZE = 4096MB) GO I think this blog post will help everybody who is facing similar issues. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Error Messages, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • AST with fixed nodes instead of error nodes in antlr

    - by ahe
    I have an antlr generated Java parser that uses the C target and it works quite well. The problem is I also want it to parse erroneous code and produce a meaningful AST. If I feed it a minimal Java class with one import after which a semicolon is missing it produces two "Tree Error Node" objects where the "import" token and the tokens for the imported class should be. But since it parses the following code correctly and produces the correct nodes for this code it must recover from the error by adding the semicolon or by resyncing. Is there a way to make antlr reflect this fixed input it produces internally in the AST? Or can I at least get the tokens/text that produced the "Tree Node Errors" somehow? In the C targets antlr3commontreeadaptor.c around line 200 the following fragment indicates that the C target only creates dummy error nodes so far: static pANTLR3_BASE_TREE errorNode (pANTLR3_BASE_TREE_ADAPTOR adaptor, pANTLR3_TOKEN_STREAM ctnstream, pANTLR3_COMMON_TOKEN startToken, pANTLR3_COMMON_TOKEN stopToken, pANTLR3_EXCEPTION e) { // Use the supplied common tree node stream to get another tree from the factory // TODO: Look at creating the erronode as in Java, but this is complicated by the // need to track and free the memory allocated to it, so for now, we just // want something in the tree that isn't a NULL pointer. // return adaptor->createTypeText(adaptor, ANTLR3_TOKEN_INVALID, (pANTLR3_UINT8)"Tree Error Node"); } Am I out of luck here and only the error nodes the Java target produces would allow me to retrieve the text of the erroneous nodes?

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  • error using rename function in PHP.

    - by Catfish
    I keep getting this error, although the file still gets moved into the correct directory. Anybody know why i'm getting this error? Warning: rename(../Images/uploaded/1162504_56863010.jpg,../Images/uploaded/Portraits/1162504_56863010.jpg) [function.rename]: No error in D:\Data\Websites\wamp\www\StephsSite\PHP\addImage.php on line 21

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  • windows 7 64 bit visual studio 2008 libtiff build nmake error

    - by user1244539
    I am trying to build tiff 4.0.2 on my Windows 7 x64 system with Visual Studio 2008, but it was showing errors: C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2347) : error C2061: syntax error : identifier 'QINT' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2362) : error C2059: syntax error : '}' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2397) : error C2061: syntax error : identifier 'JOYCAPS' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2397) : error C2059: syntax error : ';' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2398) : error C2061: syntax error : identifier 'PJOYCAPS' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2398) : error C2059: syntax error : ';' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2399) : error C2061: syntax error : identifier 'NPJOYCAPS' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2399) : error C2059: syntax error : ';' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2400) : error C2061: syntax error : identifier 'LPJOYCAPS' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2400) : error C2059: syntax error : ';' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2534) : error C2146: syntax error : missing ')' before identifier 'pjc' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2534) : error C2081: 'LPJOYCAPSA' : name in formal parameter list illegal C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2534) : error C2061: syntax error : identifier 'pjc' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2534) : error C2059: syntax error : ';' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2534) : error C2059: syntax error : ',' C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\mmsystem.h(2534) : error C2059: syntax error : ')' NMAKE: fatal error u1077: "c:\program files(x86)\microsoft visual studio 9.0\vc\bin\cl.exe": return code '0x2' This is what I was doing: Extracted tiff 4.0.2 In VS 2008 x64 Win 7 command prompt setting the environment for x86 by running vcvars32.bat Changing the path to tiff 4.0.2/libtiff folder Running nmake /f makefile.vc to create a static library of libtiff Following these steps in Windows XP generates the .lib file but in Windows 7 it fails. This is the first time I'm making any .lib files.

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  • PostGres Error When Using Distinct : postgres ERROR: could not identify an ordering operator for ty

    - by CaffeineIV
    ** EDIT ** Nevermind, just needed to take out the parens... I get this error: ERROR: could not identify an ordering operator for type record when trying to use DISTINCT Here's the query: select DISTINCT(g.fielda, g.fieldb, r.type) from fields g LEFT JOIN types r ON g.id = r.id; And the errors: ERROR: could not identify an ordering operator for type record HINT: Use an explicit ordering operator or modify the query. ********** Error ********** ERROR: could not identify an ordering operator for type record SQL state: 42883 Hint: Use an explicit ordering operator or modify the query.

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  • How do you diagnose a 500 error on Heroku when there is no error message in the logs?

    - by lala
    I have a Rails app on Heroku that is serving 500 errors at random intervals. Web pages will display "Internal server error" in plain text, instead of the usual "We're sorry. Something went wrong." page. When I refresh the page, it works fine. The logs don't show me an error message, just » 14:20:34.107 2013-10-11 12:20:33.763690+00:00 heroku router - - at=info method=HEAD path=/ host=www.mydomain.com fwd="184.73.237.85/ec2-184-73-237-85.compute-1.amazonaws.com" dyno=web.1 connect=1ms service=63ms status=200 bytes=0 » 14:21:03.957 2013-10-11 12:21:03.561867+00:00 heroku router - - at=info method=GET path=/ host=www.mydomain.com fwd="50.112.95.211/ec2-50-112-95-211.us-west-2.compute.amazonaws.com" dyno=web.1 connect=0ms service=1ms status=500 bytes=21 Support has told me to look at request queuing in New Relic, but New Relic only shows a big red mark saying the server is down (even though the site works fine when refreshed). With no error messages, I'm at a loss for how to diagnose this issue.

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  • Logging fatal/parse errors in PHP5

    - by PeterBelm
    I'm writing an error logging service that will be integrated into websites running on my server, that will email me error batches, etc. So I've been trying to find out if there's a way to handle fatal and parse errors, however not using the tricks to handle it in PHP code (output buffer, shutdown function). I'm quite happy to write some C code or something to handle it outside of my PHP code. I would also like to issue a redirect if possible (my sites use output buffering so there shouldn't be any headers sent). I'm pretty sure this could be done with a PHP module, but I've never written one and have no idea where to start.

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  • ASP.NET Error Handling: Creating an extension method to send error email

    - by Jalpesh P. Vadgama
    Error handling in asp.net required to handle any kind of error occurred. We all are using that in one or another scenario. But some errors are there which will occur in some specific scenario in production environment in this case We can’t show our programming errors to the End user. So we are going to put a error page over there or whatever best suited as per our requirement. But as a programmer we should know that error so we can track the scenario and we can solve that error or can handle error. In this kind of situation an Error Email comes handy. Whenever any occurs in system it will going to send error in our email. Here I am going to write a extension method which will send errors in email. From asp.net 3.5 or higher version of .NET framework  its provides a unique way to extend your classes. Here you can fine more information about extension method. So lets create extension method via implementing a static class like following. I am going to use same code for sending email via my Gmail account from here. Following is code for that. using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Net.Mail; namespace Experiement { public static class MyExtension { public static void SendErrorEmail(this Exception ex) { MailMessage mailMessage = new MailMessage(new MailAddress("[email protected]") , new MailAddress("[email protected]")); mailMessage.Subject = "Exception Occured in your site"; mailMessage.IsBodyHtml = true; System.Text.StringBuilder errorMessage = new System.Text.StringBuilder(); errorMessage.AppendLine(string.Format("<B>{0}</B>:{1}<BR/>","Exception",ex.Message)); errorMessage.AppendLine(string.Format("<B>{0}</B>:{1}<BR/>", "Stack Trace", ex.StackTrace)); if (ex.InnerException != null) { errorMessage.AppendLine(string.Format("<B>{0}</B>:{1}<BR/>", " Inner Exception", ex.InnerException.Message)); errorMessage.AppendLine(string.Format("<B>{0}</B>:{1}<BR/>", "Inner Stack Trace", ex.InnerException.StackTrace)); } mailMessage.Body = errorMessage.ToString(); System.Net.NetworkCredential networkCredentials = new System.Net.NetworkCredential("[email protected]", "password"); SmtpClient smtpClient = new SmtpClient(); smtpClient.EnableSsl = true; smtpClient.UseDefaultCredentials = false; smtpClient.Credentials = networkCredentials; smtpClient.Host = "smtp.gmail.com"; smtpClient.Port = 587; smtpClient.Send(mailMessage); } } } After creating an extension method let us that extension method to handle error like following in page load event of page. using System; namespace Experiement { public partial class WebForm1 : System.Web.UI.Page { protected void Page_Load(object sender,System.EventArgs e) { try { throw new Exception("My custom Exception"); } catch (Exception ex) { ex.SendErrorEmail(); Response.Write(ex.Message); } } } } Now in above code I have generated custom exception for example but in production It can be any Exception. And you can see I have use ex.SendErrorEmail() function in catch block to send email. That’s it.. Now it will throw exception and you will email in your email box like below.   That’s its. It’s so simple…Stay tuned for more.. Happy programming.. Technorati Tags: Exception,Extension Mehtod,Error Handling,ASP.NET

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  • Error logging in C#

    - by rschuler
    I am making my switch from coding in C++ to C#. I need to replace my C++ error logging/reporting macro system with something similar in C#. In my C++ source I can write LOGERR("Some error"); or LOGERR("Error with inputs %s and %d", stringvar, intvar); The macro & supporting library code then passes the (possibly varargs) formatted message into a database along with the source file, source line, user name, and time. The same data is also stuffed into a data structure for later reporting to the user. Does anybody have C# code snippets or pointers to examples that do this basic error reporting/logging? Edit: At the time I asked this question I was really new to .NET and was unaware of System.Diagnostics.Trace. System.Diagnostics.Trace was what I needed at that time. Since then I have used log4net on projects where the logging requirements were larger and more complex. Just edit that 500 line XML configuration file and log4net will do everything you will ever need :)

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  • php error reporting - having trouble matching local & web server settings

    - by Andrew Heath
    I'm trying to add a custom error handler to my site, but in doing so have discovered that my webhost's PHP error reporting settings and those of my localhost (default XAMPP) vary considerably. While I thought I was programming to E_STRICT like a good little boy, adding the error handler to my webhost revealed craploads of Runtime Notices. Example: Runtime notice strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Chicago' for 'CST/-6.0/no DST' instead In /home/... Clearly this isn't a red-alert, showstopping error. But what bothers me is that it doesn't show up on my localhost. I'd certainly like to improve my code by addressing these sorts of issues if I could see them! I've looked through both php.ini files, and my webhost's setting is error_reporting = E_ALL & ~E_NOTICE whereas mine was error_reporting = E_STRICT, which I had thought was better. However, changing mine to match and rebooting the server doesn't seem to have accomplished anything. Could someone please point me in the right direction?

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  • Error handling approach on PHP

    - by Industrial
    Hi everybody, We have a web server that we're about to launch a number of applications onto. They will all share database and memcached servers, but each application has it's own mySQL database and all memcached keys per application, is prefixed. Possible scenario: If a memcached server in our cluster goes boom, we want someone (operative system admin) to be automatically contacted by email/iphone push notification or in any other appropriate way. If we we're about to install 150 identical applications for our customers on our servers, and a memcached server dies - all 150 applications will individually find this out and contact our system admin, which most certainly is going to think about getting a new job where he or she isn't about to be woken up by getting 150 messages sent 4:15 in the morning. Possible solution: One idea is to set up an external server for error handling that gets a $_POST or cURL request sent, and handles storage of the error message depending on the seriousness of the actual error message. It would of course check upon receiving the error call, that if the same memcached server have already been reported as offline, there would be no need to spam the system admin with additional reminders... The questions: What's a good approach on how to handle errors? How does the big guys in the industry handle this? Thanks!

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  • Error monitoring/handling on webservers

    - by Industrial
    Hi everybody, We have a web server that we're about to launch a number of applications onto. They will all share database and memcached servers, but each application has it's own mySQL database and all memcached keys per application, is prefixed. Possible scenario: If a memcached server in our cluster goes boom, we want someone (operative system admin) to be automatically contacted by email/iphone push notification or in any other appropriate way. If we we're about to install 150 identical applications for our customers on our servers, and a memcached server dies - all 150 applications will individually find this out and contact our system admin, which most certainly is going to think about getting a new job where he or she isn't about to be woken up by getting 150 messages sent 4:15 in the morning. Possible solution: One idea is to set up an external server for error handling that gets a $_POST or cURL request sent, and handles storage of the error message depending on the seriousness of the actual error message. It would of course check upon receiving the error call, that if the same memcached server have already been reported as offline, there would be no need to spam the system admin with additional reminders... The questions: What's a good approach on how to handle errors? How does the big guys in the industry handle this? Thanks!

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  • SQL SERVER – Puzzle – Challenge – Error While Converting Money to Decimal

    - by pinaldave
    Earlier I wrote SQL SERVER – Challenge – Puzzle – Usage of FAST Hint and I did receive some good comments. Here is another question to tease your mind. Run following script and you will see that it will thrown an error. DECLARE @mymoney MONEY; SET @mymoney = 12345.67; SELECT CAST(@mymoney AS DECIMAL(5,2)) MoneyInt; GO The datatype of money is also visually look similar to the decimal, why it would throw following error: Msg 8115, Level 16, State 8, Line 3 Arithmetic overflow error converting money to data type numeric. Please leave a comment with explanation and I will post a your answer on this blog with due credit. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Error Messages, SQL Puzzle, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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  • Error caused by Dropbox in update manager

    - by Olivier Lalonde
    I am getting the following error message when the update manager runs: Apt Authentication issue Problem during package list update. The package list update failed with a authentication failure. This usually happens behind a network proxy server. Please try to click on the "Run this action now" button to correct the problem or update the list manually by running Update Manager and clicking on "Check". W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://linux.dropbox.com lucid Release: The following signatures were invalid: NODATA 1 NODATA 2 W: Failed to fetch http://linux.dropbox.com/ubuntu/dists/lucid/Release W: Some index files failed to download, they have been ignored, or old ones used instead. This error started to appear recently and for no obvious reason (maybe because I created myself a private PGP key?). I'm running Dropbox v0.7.11 on Ubuntu Lucid 10.04.

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  • Wammu, Samsung J700 error GetNextMemory code: 56

    - by Tamas
    I have got a (old) Samsung J700i. When connecting with a USB cabel to Wammu first the access was denied. Now it is oké... However, when I try to get info out from the phone... I get error message: Error whlie communicating with phone Desciption: Internal phone error. Function: GetNextMemory Error code: 56 I am using Ubuntu 12.04 and Wammu 0.36 Running on Python 2.7.3 Using wxPython 2.8.12.1 Using python-gammu 1.31.0 and Gammu 1.31.0 How may I access data on the phone? Thanks, Tamas

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  • What layer to introduce human readable error messages?

    - by MrLane
    One of the things that I have never been happy with on any project I have worked on over the years and have really not been able to resolve myself is exactly at what tier in an application should human readable error information be retrieved for display to a user. A common approach that has worked well has been to return strongly typed/concrete "result objects" from the methods on the public surface of the business tier/API. A method on the interface may be: public ClearUserAccountsResult ClearUserAccounts(ClearUserAccountsParam param); And the result class implementation: public class ClearUserAccountsResult : IResult { public readonly List<Account> ClearedAccounts{get; set;} public readonly bool Success {get; set;} // Implements IResult public readonly string Message{get; set;} // Implements IResult, human readable // Constructor implemented here to set readonly properties... } This works great when the API needs to be exposed over WCF as the result object can be serialized. Again this is only done on the public surface of the API/business tier. The error message can also be looked up from the database, which means it can be changed and localized. However, it has always been suspect to me, this idea of returning human readable information from the business tier like this, partly because what constitutes the public surface of the API may change over time...and it may be the case that the API will need to be reused by other API components in the future that do not need the human readable string messages (and looking them up from a database would be an expensive waste). I am thinking a better approach is to keep the business objects free from such result objects and keep them simple and then retrieve human readable error strings somewhere closer to the UI layer or only in the UI itself, but I have two problems here: 1) The UI may be a remote client (Winforms/WPF/Silverlight) or an ASP.NET web application hosted on another server. In these cases the UI will have to fetch the error strings from the server. 2) Often there are multiple legitimate modes of failure. If the business tier becomes so vague and generic in the way it returns errors there may not be enough information exposed publicly to tell what the error actually was: i.e: if a method has 3 modes of legitimate failure but returns a boolean to indicate failure, you cannot work out what the appropriate message to display to the user should be. I have thought about using failure enums as a substitute, they can indicate a specific error that can be tested for and coded against. This is sometimes useful within the business tier itself as a way of passing via method returns the specifics of a failure rather than just a boolean, but it is not so good for serialization scenarios. Is there a well worn pattern for this? What do people think? Thanks.

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  • Is goto to improve DRY-ness OK?

    - by Marco Scannadinari
    My code has many checks to detect errors in various cases (many conditions would result in the same error), inside a function returning an error struct. Instead of looking like this: err_struct myfunc(...) { err_struct error = { .error = false }; ... if(something) { error.error = true; error.description = "invalid input"; return error; } ... case 1024: error.error = true; error.description = "invalid input"; // same error, but different detection scenario return error; break; // don't comment on this break please (EDIT: pun unintended) ... Is use of goto in the following context considered better than the previous example? err_struct myfunc(...) { err_struct error = { .error = false }; ... if(something) goto invalid_input; ... case 1024: goto invalid_input; break; return error; invalid_input: error.error = true; error.description = "invalid input"; return error;

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  • How do I select a fixed number of rows for each group?

    - by Maiasaura
    Here is some example data in a mysql table a b distance 15 44 250 94 31 250 30 41 250 6 1 250 95 18 250 72 84 500 14 23 500 55 24 500 95 8 500 59 25 500 40 73 500 65 85 500 32 50 500 31 39 500 22 25 500 37 11 750 98 39 750 15 57 750 9 22 750 14 44 750 69 22 750 62 50 750 89 35 750 67 65 750 74 37 750 52 36 750 66 53 750 82 74 1000 79 22 1000 98 41 1000 How do I query this table such that I get 2 rows per distance selected at random? A successful query will produce something like a b distance 30 41 250 95 18 250 59 25 500 65 85 500 15 57 750 89 35 750 79 22 1000 98 41 1000

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