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• how rspec creates database between specs

  - by timpone

  This is a bit of a naive / simple question. I'm having a hard time finding this info online. Basically, does rspec run rake db:test:prepare between every rspec group? Or is it between every example or model? Or does the schema get loaded once and then truncated between each. I need to add a rake task directly after this call to create a view since they are not supported in schema.rb. Either a link or explanation would be greatly appreciated so that I know where to insert my rake task to create a view. Or whether there is a callback like rake db:test:after_prepare thx

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• Using an observer within an Engine

  - by Tim

  I've created an Engine which is basically used for all of our projects. Now what I want to do is add a before_create callback to all of the models in this Engine. After some searching I found out that an observer is the way to go. So, I've created this observer: class AuthObserver < ActiveRecord::Observer def before_create( record ) p record end end And now I need to add it to the application, but of course in my Engine there is no such file as application.rb. What I tried is adding it to an initializer located in /config/initializers/observers.rb Like so: Rails.application.config.active_record.observers = :auth_observer But this doesn't work, and it throws no errors. Anybody out here has experience using an observer inside an engine? Thanks a lot!

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• Kernel compiling with -j2+ parameter ends prematurely with no error message or output bzImage

  - by Minix

  I've noticed quite a while ago that compiling a kernel with the parameter -j set to 1 or more doesn't produce a bzImage. Instead, it ends prematurely without any advice. I have reproduced the same behavior in both my netbook and home server. As far as I'm aware, the point where the compilation stops is random - Compiling twice with the same parameters will probably stop at different files. However, when I run make with no -j* parameter the compilation ends just fine and outputs a working bzImage. Both machines run Intel Atom (N270 on the netbook and 330 on the server) and I've compiled for these processors. If I recall correctly, I've tried compiling both with Atom and with generic x86_64 options. The kernel version I'm building is 2.6.34.1 I've always compiled normally with those options in my Core2Duo and Pentium Dual Core machines. Has anyone experienced this issue? Any ideas why does this happens? Is there a fix or workaround?

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• Application got shut down in WinXP if I close the 2nd window of that application.

  - by kinopyo

  I'm using WinXP and here is my question: I run an application, such as Chrome, there would be one app in the task bar, and it's fine. Suppose a new window of Chrome opened(so there would be 2 window and 2 in the task bar), and when I close that,the 2nd one, the whole application just shutdown. And so does chrome, firefox, evernote, Becky!(the email client), even TortoiseSVN. So I think there should be a generic problem cause these applications shutdown, such as the platform - WinXP. Please give me some advice or hint, anything comes to your mind would be helpful!

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• run the script only once?

  - by fusion

  being new to php and coming from asp.net, i would like to know if there is an equivalent of IsPostBack, which calls a function or a method only once, once the user is logged in. i have a facebook application, in which once the user authorizes the application it should enter his details in the database. this basic stuff should have been done using the post-authorize callback url which facebook pings when the user first authorizes the app, but somehow that is not working; hence i have to do it manually. the issue is that, since i'm checking whether the user exists or not in index.php, i would not like index.php to run this code repeatedly for the same user when the user goes to the homepage every time. any ideas?

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• WGet a Page that Requires Logging in

  - by Synetech inc.

  I’m trying to figure out a way to use WGET or a similar tool so that I can schedule a web page to be downloaded regularly as a sort of updating log. The problem is that the page requires that I be logged in otherwise I get a different page, generic. Further, the page does not take login information as GET parameters in the URL, it uses POST to log in on the login page and cookies to save the login information that’s read by the regular page. I’m currently using GNU Wget 1.10.2 for Windows. I’ve tried using WGET’s cookie functionality but have had mixed results, usually skewing towards it not working. Can anyone please advise on a way to accomplish this? Thanks a lot.

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• Where can I store driver files so that Windows sees them when it 'searches automatically' for them?

  - by qroberts

  I am in the process of creating a few generic images and I have downloaded all the drivers for all the models of machines we use here. I can extract these drivers to any location but I am not sure where Windows looks when it is searching for drivers. Is there a driver store somewhere in Windows that it searches through? These images will be created for: Windows XP, Windows 7 x86/x64 Are the locations different between Windows XP and Windows 7? Are they different if the OS is x64 based? I know Windows likes to differentiate 32/64bit software all over the place, not sure if they do the same with driver stores.

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• How should I synchronize lists in WCF?

  - by mafutrct

  I've got a WCF service that offers multiple lists of items of different types. The lists can be changed on the server. Every change has to be published to all clients to make sure every client has an up-to-date copy of each server list. Currently I'm using this strategy: On login, every client receives the current status of every list. On every change, the added or removed item is sent to all clients. The drawback is that I have to create a callback for every list, since the items are of different types. Is there a pattern I could apply? Or do I really have to duplicate code for each of the lists?

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• Delete/move a UITableView row that's attached to a web service.

  - by Kevin L.

  Deleting or moving rows for a UITableView that is backed with local data (e.g., NSArray) is easy and instantaneous: Remove the value from the array. Call deleteRowsAtIndexPaths:withRowAnimation:. Profit! But my table view communicates with a web service, which means once the "Delete" button on that row gets tapped, I have to forward a request on to the server (via ASIHTTPRequest, of course), get the response, and then tell the table view to run its little delete-row animation, all with a few seconds of latency in between. From a high-level, what's the best way to do that? Throw some callback selector into ASIHTTPRequest's userInfo dictionary? KVO? Bonus points for some nice UI touch, like some kind of spinner on the soon-to-be-deleted cell.

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• Why is this global variable not being changed???

  - by user398314

  Why does this turn up null instead of being set to the data returned from the ajax call? It must be something simple i am overlooking. var message; $(document).ready(function(){ fbFetchMessage(); alert(message); }); function fbFetchMessage(){ var url = "http://graph.facebook.com/companyname/feed?callback=?"; $.getJSON(url,function(json){ message = json.data[0].message; }); }

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• nfs mount fails in Ubuntu 10, but not with -v

  - by stuartreynolds

  (1) mount -t nfs remotehost:/remotedir localmountpoint -o owner,rw (2) mount -v -t nfs remotehost:/remotedir localmountpoint -o owner,rw (1) Used to work with Ubuntu 9 and now fails with Ubuntu 10 (2.6.32-21-generic kernel) with the error: mount.nfs: an incorrect mount option was specified Strangely, adding -v (verbose) in (2) makes the problem go away. This is currently a blocker for me because the fstab line: remotehost:/remotedir localmountpoint nfs owner,rw 0 0 causes the same error (I don't believe I can specify verbose in fstab). Is this a bug in mount or my options really incorrect?

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• Flash: How to get a list to be processed synchronous instead of asynchronous?

  - by Quandary

  Question: In Flash I have the below function. Now the problem is SaveFurniture, SavePolygons and SaveComments all save to the same XML file. Now SaveFurniture sends JSON encoded data to a ashx handler, which saves it in the xml on the server. The problem is, because flash sends the data asynchronous, the polygons get sent to the polygonsave ashx handler, but before saving of the furniture has completed, thus access error, write process already in progress... // cSaveData.SaveData(); public static function SaveData():void { trace("cSaveData.SaveData"); //NotifyASPXofNewScale(cGlobals.nPlanScale); SaveFurniture(); SavePolygons(); SaveComments(); } What's the best way to process this list, ONE AFTER ANOTHER ? Making a callback in all of them does make the program flow structure very confusing...

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• how to kill an older jsonp request?

  - by pfg

  I have a cross-domain long polling request using getJSON with a callback that looks something like this: $.getJSON("http://long-polling.com/some.fcgi?jsoncallback=?" function(data){ if(data.items[0].rval == 1) { // update data in page } }); The problem is the request to the long-polling service might take a while to return, and another getJSON request might be made in the meantime and update the page even though it is a stale response. Req1: h**p://long-polling.com/some.fcgi at 10:00 AM Req2: h**p://long-polling.com/some.fcgi? at 10:01 AM Req1 returns and updates the data on the page 10:02 AM I want a way to invalidate the return from Req1 if Req2 has already been made. Thanks!

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• How can I know when SQL Full Text Index Population is finished?

  - by GarethOwen

  We are writing unit tests for our ASP.NET application that run against a test SQL Server database. That is, the ClassInitialize method creates a new database with test data, and the ClassCleanup deletes the database. We do this by running .bat scripts from code. The classes under test are given a connection string that connects to the unit test database rather than a production database. Our problem is, that the database contains a full text index, which needs to be fully populated with the test data in order for our tests to run as expected. As far as I can tell, the fulltext index is always populated in the background. I would like to be able to either: Create the full text index, fully populated, with a synchronous (transact-SQL?) statement, or Find out when the fulltext population is finished, is there a callback option, or can I ask repeatedly? My current solution is to force a delay at the end the class initialize method - 5 seconds seems to work - because I can't find anything in the documentation.

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• Getting the keyboard working on a MacBook under Windows XP x64

  - by Theran

  Despite Windows XP Professional x64's unsupported status on MacBooks (model A1181), I've managed to get most of the hardware working by manually installing either the drivers on the OS X Snow Leopard CD, or finding the appropriate drivers online. However, even after installing the Apple keyboard driver from the CD, I can't get Windows to actually use the special driver. Instead, the keyboard just shows up as a generic USB keyboard, with non-functioning Fn and other special keys. Being unable to generate a right-click or Ctrl-Alt-Del makes Windows a bit of a challenge to use. I've tried: uninstalling and reinstalling the keyboard driver removing the keyboard under device manager and letting Windows re-detect it using device manager to manually update the driver How do I get the special functions of the MacBook keyboard working under XP x64?

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• Ruby On Rails: Ask for Confirmation When Table Entry Associated With Another Is Destroyed

  - by Train Main

  Hi all, I would like some assistance with the following problem: I have a table of groups that is self-associated with itself, so each group is (optionally) linked to another in a hierarchical fashion. I want to write some code that will somehow check before the destruction of a group entry, if it has any children, and ask the user for confirmation, or whether they wish to delete the child groups as well. I've looked at callbacks, but I don't know how to get the confirmation request to the end user in the view, and then get the response back to the model's callback. Thanks

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• Using jQuery, how do I way attach a string array as a http parameter to a http request?

  - by predhme

  I have a spring controller with a request mapping as follows @RequestMapping("/downloadSelected") public void downloadSelected(@RequestParam String[] ids) { // retrieve the file and write it to the http response outputstream } I have an html table of objects which for every row has a checkbox with the id of the object as the value. When they submit, I have a jQuery callback to serialize all ids. I want to stick those ids into an http request parameter called, "ids" so that I can grab them easily. I figured I could do the following var ids = $("#downloadall").serializeArray(); Then I would need to take each of the ids and add them to a request param called ids. But is there a "standard" way to do this? Like using jQuery?

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• Sequencing ajax requests

  - by Scott Evernden

  I find I sometimes need to iterate some collection and make an ajax call for each element. I want each call to return before moving to the next element so that I don't blast the server with requests - which often leads to other issues. And I don't want to set async to false and freeze the browser. Usually this involves setting up some kind of iterator context that i step thru upon each success callback. I think there must be a cleaner simpler way? Does anyone have a clever design pattern for how to neatly work thru a collection making ajax calls for each item?

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• Wordpress: Issues trying to display all comments in one page

  - by KeyStroke

  Hi, I'm trying to modify my wordpress theme (inove) to display all comments in the same page instead of 50 comments per page. I opened the comments.php file, commented out calls to paginate_comments_links() and and set the wp_list_comments() as follows: wp_list_comments('type=comment&callback=custom_comments&per_page=100&page=1'); The problem is, whenever someone posts a comments, the comment form appends '/comment-page-2/' to the URL after submitting the comment, even though I've specified that all comments to be displayed on the same page. Any idea what I could be missing? Appreciate your help

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• C++ DLL which can inform a calling program about its progress

  - by Felix Dombek

  My boss wants me to write a DLL in C++ (MSVC++2010) which can perform a Volume Shadow Copy which he can call from VB6 (or at a later point other languages) and which can give status updates back while it is not finished. He calls it "events". I have the feeling that I finally need to learn COM (I'd rather not ...) ... also, a callback function comes to my mind, but it's surely impossible to hand over function pointers from VB6 to C++? Can someone outline what I have to learn and how this can be accomplished, with or without COM?

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• jquery animation - when do they finish?

  - by Naor

  I have two jquery animations one by other: books.animate({ left: left1 }, { duration: this.slideDuration, easing: this.easing, complete: complete }); laptops.animate({ left: left2 }, { duration: this.slideDuration, easing: this.easing, complete: complete }); I want the animations to run simultanusly so I use {queue: false}: books.animate({ left: left1 }, { duration: this.slideDuration, easing: this.easing, queue: false, complete: complete }); laptops.animate({ left: left2 }, { duration: this.slideDuration, easing: this.easing, queue: false, complete: complete }); But now the completed callback called twice! How can I know exactly when does the both animations are done?

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• How can I declare constant strings for use in both an unmanaged C++ dll and in a C# application?

  - by Surfbutler

  Curently I'm passing my const string values up from my C++ into my C# at startup via a callback, but I'm wondering if there's a way of defining them in a C++ header file that I can then also refer to in C#. I already do this with enums as they are easy. I include a file in both my C++ library project (via a .h file with a pragma once at the top), and my C# application (as a link): #if _NET public #endif enum ETestData { First, Second }; I know it sounds messy, but it works :) But...how can I do the same with string constants - I'm initially thinking the syntax is too different between the platforms, but maybe there's a way? Using clever syntax involving #if _NET, #defines etc? Using resource files? Using a C++/CLI library? Any ideas?

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• How to disable password change for openldap user?

  - by Keve

  Considering possible solutions for some improvements I run into this theoretical question and I couldn't find a satisfying answer. Some of you may have first-hand experience with this in practice, so here the question goes: How can I disable password changing for an OpenLDAP user? The account must stay enabled, allowed to log on to workstations and work as usual, but should not be able to change its own password. Can this be done? If so, how difficult is it to implement it? All suggestions are appreciated! For reference: Servers and workstations are to run a mixture of FreeBSD and OpenBSD. Accounts to get password disabled are student or generic workstation accounts. Environment is a school.

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• Run BGInfo At Startup For All Users

  - by slickboy

  I have a Windows 7 image which I intend to deploy across a business. For simplicity I intend to install BGInfo on each machine and have it update each time a user logs in. From what I can see, when BGInfo creates a configuration file, the file contains variables which are local to each account - and therefore the configuration file will only work on the user account that created it. Has anyone any idea as to how make these configuration files 'generic' so that BGInfo will work for all accounts when they log in? At present I have the BGInfor application and a BGInfo configuration file saved on the C drive and I have written a batch file which is stored in the 'All Users/Start Menu/Startup' directory (which executes every time any user on the computer logs in), however this only works for the account which created the configuration file. Thanks for any help.

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• Results from two queries at once in sqlite?

  - by SF.

  I'm currently trying to optimize the sluggish process of retrieving a page of log entries from the SQLite database. I noticed I almost always retrieve next entries along with count of available entries: SELECT time, level, type, text FROM Logs WHERE level IN (%s) ORDER BY time DESC, id DESC LIMIT LOG_REQ_LINES OFFSET %d* LOG_REQ_LINES ; together with total count of records that can match current query: SELECT count(*) FROM Logs WHERE level IN (%s); (for a display "page n of m") I wonder, if I could concatenate the two queries, and ask them both in one sqlite3_exec() simply concatenating the query string. How should my callback function look then? Can I distinguish between the different types of data by argc? What other optimizations would you suggest?

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