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Articles indexed in January 2011

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• Looking for a recommendation for an OS X Bash manual

  - by Mental Sticks

  I've just begun to use the Terminal in Mac OS X and I've found the man command very useful, although very often the explanations are too compact or complicated for me. I am looking for a very basic reference guide – like O'Reilly makes, for example. But in there I didn't find an entry for basic commands like ls or ln and a layman's explanation of all the flags and options. Could anybody recommend me something?

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• Ask How-To Geek: Learning the Office Ribbon, Booting to USB with an Old BIOS, and Snapping Windows

  - by Jason Fitzpatrick

  You’ve got questions and we’ve got answers. Today we highlight how to master the new Office interface, USB boot a computer with outdated BIOS, and snap windows to preset locations. Learning the New Office Ribbon Dear How-To Geek, I feel silly asking this (in light of how long the new Office interface has been out) but my company finally got around to upgrading from Windows XP and Office 2000 so the new interface it totally new to me. Can you recommend any resources for quickly learning the Office ribbon and the new changes? I feel completely lost after two decades of the old Office interface. Help! Sincerely, Where the Hell is Everything? Dear Where the Hell, We think most people were with you at some point in the last few years. “Where the hell is…” could possibly be the slogan for the new ribbon interface. You could browse through some of the dry tutorials online or even get a weighty book on the topic but the best way to learn something new is to get hands on. Ribbon Hero turns learning the new Office features and ribbon layout into a game. It’s no vigorous round of Team Fortress mind you, but it’s significantly more fun than reading a training document. Check out how to install and configure Ribbon Hero here. You’ll be teaching your coworkers new tricks in no time. Boot via USB with an Old BIOS Dear How-To Geek, I’m trying to repurpose some old computers by updating them with lightweight Linux distros but the BIOS on most of the machines is ancient and creaky. How ancient? It doesn’t even support booting from a USB device! I have a large flash drive that I’ve turned into a master installation tool for jobs like this but I can’t use it. The computers in question have USB ports; they just aren’t recognized during the boot process. What can I do? USB Bootin’ in Boise Dear USB Bootin’, It’s great you’re working to breathe life into old hardware! You’ve run into one of the limitations of older BIOSes, USB was around but nobody was thinking about booting off of it. Fortunately if you have a computer old enough to have that kind of BIOS it’s likely to also has a floppy drive or a CDROM drive. While you could make a bootable CDROM for your application we understand that you want to keep using the master USB installer you’ve made. In light of that we recommend PLoP Boot Manager. Think of it like a boot manager for your boot manager. Using it you can create a bootable floppy or CDROM that will enable USB booting of your master USB drive. Make a CD and a floppy version and you’ll have everything in your toolkit you need for future computer refurbishing projects. Read up on creating bootable media with PLoP Boot Manager here. Snapping Windows to Preset Coordinates Dear How-To Geek, Once upon a time I had a company laptop that came with a little utility that snapped windows to preset areas of the screen. This was long before the snap-to-side features in Windows 7. You could essentially configure your screen into a grid pattern of your choosing and then windows would neatly snap into those grids. I have no idea what it was called or if was anymore than a gimmick from the computer manufacturer, but I’d really like to have it on my new computer! Bend and Snap in San Francisco, Dear Bend and Snap, If we had to guess, we’d guess your company must have had a set of laptops from Acer as the program you’re describing sounds exactly like Acer GridVista. Fortunately for you the application was extremely popular and Acer released it independently of their hardware. If, by chance, you’ve since upgraded to a multiple monitor setup the app even supports multiple monitors—many of the configurations are handy for arranging IM windows and other auxiliary communication tools. Check out our guide to installing and configuring Acer GridVista here for more information. Have a question you want to put before the How-To Geek staff? Shoot us an email at [email protected] and then keep an eye out for a solution in the Ask How-To Geek column. Latest Features How-To Geek ETC How to Upgrade Windows 7 Easily (And Understand Whether You Should) The How-To Geek Guide to Audio Editing: Basic Noise Removal Install a Wii Game Loader for Easy Backups and Fast Load Times The Best of CES (Consumer Electronics Show) in 2011 The Worst of CES (Consumer Electronics Show) in 2011 HTG Projects: How to Create Your Own Custom Papercraft Toy Download the New Year in Japan Windows 7 Theme from Microsoft Once More Unto the Breach – Facebook Apps Can Now Access Your Address and Phone Number Dial Zero Speeds You Through Annoying Customer Service Menus Complete Dropquest 2011 and Receive Free Dropbox Storage Desktop Computer versus Laptop Wallpaper The Kids Have No Idea What Old Tech Is [Video]

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• Le risque de cyber guerre est surestimé ainsi que les effets des exploits actuels, rapportent des chercheurs anglais

  Le risque de cyber guerre est surestimé ainsi que les effets des exploits actuels, rapportent des chercheurs anglais Depuis quelques mois, on crie en tous sens à la "cyberguerre". Pourtant, d'après une étude récente, la menace serait surestimée. Rassurantes, les conclusions de cette recherche affirment que si une pandémie ou une crise économique peut créer des soucis planétaires, les cyber attaques en sont loin mais tout juste capables de créer des désordres ponctuels et localisés. De plus, le terme de "guerre numérique" serait souvent mal utilisé, et ne correspondrait pas à certaines activités pour lesquelles il est utilisé, comme l'espionnage ou l'hacktivisme, ou bien encore les accidents. les d...

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• Querying Visual Studio project files using T-SQL and Powershell

  - by jamiet

  Earlier today I had a need to get some information out of a Visual Studio project file and in this blog post I’m going to share a couple of ways of going about that because I’m pretty sure I won’t be the only person that ever wants to do this. The specific problem I was trying to solve was finding out how many objects in my database project (i.e. in my .dbproj file) had any warnings suppressed but the techniques discussed below will work pretty well for any Visual Studio project file because every such file is simply an XML document, hence it can be queried by anything that can query XML documents. Ever heard the phrase “when all you’ve got is hammer everything looks like a nail”? Well that’s me with querying stuff – if I can write SQL then I’m writing SQL. Here’s a little noddy database project I put together for demo purposes: Two views and a stored procedure, nothing fancy. I suppressed warnings for [View1] & [Procedure1] and hence the pertinent part my project file looks like this:   <ItemGroup>    <Build Include="Schema Objects\Schemas\dbo\Views\View1.view.sql">      <SubType>Code</SubType>      <SuppressWarnings>4151,3276</SuppressWarnings>    </Build>    <Build Include="Schema Objects\Schemas\dbo\Views\View2.view.sql">      <SubType>Code</SubType>    </Build>    <Build Include="Schema Objects\Schemas\dbo\Programmability\Stored Procedures\Procedure1.proc.sql">      <SubType>Code</SubType>      <SuppressWarnings>4151</SuppressWarnings>    </Build>  </ItemGroup>  <ItemGroup> Note the <SuppressWarnings> elements – those are the bits of information that I am after. With a lot of help from folks on the SQL Server XML forum  I came up with the following query that nailed what I was after. It reads the contents of the .dbproj file into a variable of type XML and then shreds it using T-SQL’s XML data type methods: DECLARE @xml XML; SELECT @xml = CAST(pkgblob.BulkColumn AS XML) FROM   OPENROWSET(BULK 'C:\temp\QueryingProjectFileDemo\QueryingProjectFileDemo.dbproj' -- <-Change this path!                    ,single_blob) AS pkgblob                    ;WITH XMLNAMESPACES( 'http://schemas.microsoft.com/developer/msbuild/2003' AS ns) SELECT  REVERSE(SUBSTRING(REVERSE(ObjectPath),0,CHARINDEX('\',REVERSE(ObjectPath)))) AS [ObjectName]        ,[SuppressedWarnings] FROM   (        SELECT  build.query('.') AS [_node]        ,       build.value('ns:SuppressWarnings[1]','nvarchar(100)') AS [SuppressedWarnings]        ,       build.value('@Include','nvarchar(1000)') AS [ObjectPath]        FROM    @xml.nodes('//ns:Build[ns:SuppressWarnings]') AS R(build)        )q And here’s the output: And that’s it – an easy way of discovering which warnings have been suppressed and for which objects in your database projects. I won’t bother going over the code as it is fairly self-explanatory – peruse it at your leisure.   Once I had the SQL above I figured I’d share it around a little in case it was ever useful to anyone else; hence I’m writing this blog post and I also posted it on the Visual Studio Database Development Tools forum at FYI: Discover which objects have had warnings suppressed. Luckily Kevin Goode saw the thread and he posted a different solution to the same problem, one that uses Powershell. The advantage of Kevin’s Powershell approach is that it is easy to analyse many .dbproj files at the same time. Below is Kevin’s code which I have tweaked ever so slightly so that it produces the same results as my SQL script (I just want any object that had had a warning suppressed whereas Kevin was querying specifically for warning 4151):   cd 'C:\Temp\QueryingProjectFileDemo\' cls $projects = ls -r -i *.dbproj Foreach($project in $projects) { $xml = new-object System.Xml.XmlDocument $xml.set_PreserveWhiteSpace( $true ) $xml.Load($project) #$xpath = @{Start="/e:Project/e:ItemGroup/e:Build[e:SuppressWarnings=4151]/@Include"} #$xpath = @{Start="/e:Project/e:ItemGroup/e:Build[contains(e:SuppressWarnings,'4151')]/@Include"} $xpath = @{Start="/e:Project/e:ItemGroup/e:Build[e:SuppressWarnings]/@Include"} $ns = @{ e = "http://schemas.microsoft.com/developer/msbuild/2003" } $xml | Select-Xml -XPath $xpath.Start -Namespace $ns |Select -Expand Node | Select -expand Value } and here’s the output: Nice reusable Powershell and SQL scripts – not bad for an evening’s work. Thank you to Kevin for allowing me to share his code. Don’t forget that these techniques can easily be adapted to query any Visual Studio project file, they’re only XML documents after all! Doubtless many people out there already have code for doing this but nonetheless here is another offering to the great script library in the sky. Have fun! @Jamiet

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• Multi-lingual error messages and error numbers

  - by Jon Hopkins

  So we're looking at the possibility of porting our software to support multiple languages and one of the areas we're going to have to deal with is error messages and other notifications. These obviously have to be reported to the users in their own language. Our team (largely) only speak English and even if we were all multi-lingual we're looking at selling to a wide range of countries and could never expect to have a reasonable number of people speaking all languages (we're a small company). The obvious way to get round the language issue when errors or other messages we may get asked about which are being reported is error numbers which would be consistent across language. While these are going to exist in the backend (if only as key on the error message), I'd really rather not throw them at users if we don't have to but I don't have any other solution. Anyone have any useful suggestions for alternatives?

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• Connectify-like functionality on 4965 AGN wireless?

  - by Vivek Sharma

  I would like to use my laptop as an Access point, so that i can connect my phones through Wifi. I have done this my office laptop T410. I am having T61 with wifi module 4965. Connectify on windows does not support it. I am following these instructions to make achieve WAP capability on my T61 running ubuntu 10.10. The link says something about "master mode", how do i put my T61 wifi-inter4965 in master mode. Can I install madwifi or atheros drivers on it? I am using galaxy S froyo, and it does not support Ad-hoc network. Has anyone tried to achieve this?

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• How to run Java application in KDE with Qt-like UI?

  - by squallbayu

  Continuing my question in Install Ubuntu or Kubuntu? I have tried Kubuntu (KDE), and it was very cool as cool as Ubuntu (GNOME). but there is little problem with its user interface when we start Java application (LimeWire, Netbeans, Eclipse). User interface changed to Metal, (which I think is a bit old school). Can we run it with Qt like UI?, such as when we start Java application in Gnome (run with GTK like UI/emulation GTK like UI)? I hear there is a class for Java in order to make Java application UI like Qt, called the Qt/Jambi bindings for Java. How can we integrate it in KDE when we start Java application? My other question is if not wrong, OpenOffice was built in Java,so why OpenOffice can run with Qt like UI in KDE?

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• Why are the tags on my site using wordpress being indexed instead of the page?

  - by Bernard

  I can't figure out why my tags are being indexed by google and not my actual posts. So in google, my posts are showing up as mysite.com/tags/post and I of course I want it to look like mysite.com/category/actualpost. Any ideas what could be wrong? My domain is 3 years old and I just started a new focus of an existing site. I can't figure this out! There is no duplicate content, I have a sitemap submitted to webmaster tools and robots.txt...I have everything I need. This is the first time something like this has happened to me. Let me know if anyone has any ideas.

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• Optimize jQuery code

  - by Dannemannen

  Greetings, Just built some stuff with jQuery, everything works perfect(!), but I would like it to be as optimzed as possible.. what small changes can I do to my code? $(document).ready(function() { // hide the indicator, we use it later $(".indicator").hide(); // start the animation of the progressbar $(".fill").animate({ width: "50px",}, 4000, function() { $(".indicator").effect("pulsate", { times:999 }, 2000);}); // notify-me ajax function $(".btn-submit").click(function() { // get the variable email and put it in a new variable var email = $("input#mail").val(); var dataString = 'mail='+email; $.ajax({ type: "POST", url: "/mail.php", data: dataString, dataType: "json", success: function(msg){ // JSON return, lets do some magic if(msg.status == "ok") { $("#response-box").fadeIn("slow").delay(2000).fadeOut("slow"); $("#fade").fadeIn("slow").delay(2000).fadeOut("slow"); $("#response-box .inner").html("<h1>Thank you.</h1>We'll keep in touch!"); $("#mail").val("e.g. [email protected]"); } else { $("#response-box").fadeIn("slow").delay(2000).fadeOut("slow"); $("#fade").fadeIn("slow").delay(2000).fadeOut("slow"); $("#response-box .inner").html("<h1>Oops.</h1>Please try again!"); } } }); //make sure the form doesn't post return false; }); });

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• How can I cut down on this spam, and what is the point of it anyway?

  - by Steven

  I run a small, niche personal ads site. People post ads and then other people reply to them, which sends an email to the original creator of the ad telling them that someone is interested and giving them contact information for that interested person. Lately there's been some weird spam. People are receiving nonsense replies to their ads. Here is an example of one: Name: xkauwvyr Reply: vRYmbI <a href="http://rypmoxdkfblf.com/">rypmoxdkfblf</a>, url=http://pnjlwvhizwbq.com/]pnjlwvhizwbq[/url], [link=http://hmenwoujxrfv.com/]hmenwoujxrfv[/link], http://ogsekuhoyeud.com/ They vary in length and composition but they all look roughly like that. The first idea I had was to simply throw out any reply that contained the string " Also, is this spam just some ass playing a trick on my website, or is it something more malicious?

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• Help with basic php and xml needed

  - by Matt

  Hi, I'm really new to xml, with this being my first dip into it. I'm trying to add some text to an image using php and xml. I keep getting the following error: Parse error: syntax error, unexpected '}' in /home/a8744502/public_html/userbar.php on line 18 Below is my code. <?php header ("Content-type: image/jpeg"); $doc = new DOMDocument(); $doc->load( "http://phogue.net/feed/". LIBXML_DTDLOAD ); $procon = $doc->getElementsByTagName( "procon" ); $packages = $procon->getElementsByTagName( "package" ); $value = 0; foreach($packages as $package) { $downloadsA = $package->getElementsByTagName( "downloads" ); $downloads = $downloadsA->item(0)->nodeValue; $value = $downloads + $value } $font = "visitor1.tff"; $font = 4; $im = ImageCreateFromjpeg("procon_plugindeveloper.jpg"); $x = 360; $y = 0; $background_color = imagecolorallocate ($im, 255, 255, 255); $text_color = imagecolorallocate ($im, 255, 255, 255); imagestring ($im, $font, $x, $y, $value, $text_color); imagejpeg ($im); ?> The xml file is of the form <procon> -<packages> --<package> ---<downloads> ---</doanloads> --</package> --<package> ---<downloads> ---</doanloads> --</package> --<package> ---<downloads> ---</doanloads> --</package> -</packages> </procon> The idea is that it should print out the sum of all the downloads tags that are contained in . Any help is appreciated :-)

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• Thread mutex behaviour

  - by Alberteddu

  Hi there, I'm learning C. I'm writing an application with multiple threads; I know that when a variable is shared between two or more threads, it is better to lock/unlock using a mutex to avoid deadlock and inconsistency of variables. This is very clear when I want to change or view one variable. int i = 0; /** Global */ static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; /** Thread 1. */ pthread_mutex_lock(&mutex); i++; pthread_mutex_unlock(&mutex); /** Thread 2. */ pthread_mutex_lock(&mutex); i++; pthread_mutex_unlock(&mutex); This is correct, I think. The variable i, at the end of the executions, contains the integer 2. Anyway, there are some situations in which I don't know exactly where to put the two function calls. For example, suppose you have a function obtain(), which returns a global variable. I need to call that function from within the two threads. I have also two other threads that call the function set(), defined with a few arguments; this function will set the same global variable. The two functions are necessary when you need to do something before getting/setting the var. /** (0) */ /** Thread 1, or 2, or 3... */ if(obtain() == something) { if(obtain() == somethingElse) { // Do this, sometimes obtain() and sometimes set(random number) (1) } else { // Do that, just obtain(). (2) } } else { // Do this and do that (3) // If # of thread * 3 > 10, then set(3*10) For example. (4) } /** (5) */ Where I have to lock, and where I have to unlock? The situation can be, I think, even more complex. I will appreciate an exhaustive answer. Thank you in advance. —Alberto

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• Add Event Handler To Dynamic Dropdownlist

  - by Andrea Girardi

  Hi all! I have a page that contains dynamically generated Dropdown List controls and I want thant the dynamic dropdown list perform an AutoPostback to fill some other field using the value selected. This is the code I'm using to create dynamically the control: If (Not IsPostBack) Then Dim newDDL As DropDownList = New DropDownList() AddHandler newDDL.SelectedIndexChanged, AddressOf ChangeValue newDDL.ID = "Level1" [fill the DropDownList] newDDL.Items.Insert(results.Count, New ListItem("", -1)) newDDL.Width = "300" newDDL.AutoPostBack = True newDDL.SelectedIndex = results.Count LevelDDLs.Controls.Add(newDDL) LevelDDLs.Controls.Add(New LiteralControl("<br /><br />")) End If Control is correctly filled and rendered on ASP page but, after selecting a value, the page is reloaded (AutoPostBack is called) but the control is not diplayed and the sub is not called. I put a breakpoint into the ChangeValue sub but anything happens. I read on some post that handler for the first DropDownList is not necessary but, how is it possible to tell DropDownList to call my sub after changevalue? Could you help me, please? many thanks, Andrea

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• Iterating Through N Level Children

  - by bobber205

  This seems like something neat that might be "built into" jQuery but I think it's still worth asking. I have a problem where that can easily be solved by iterating through all the children of a element. I've recently discovered I need to account for the cases where I would need to do a level or two deeper than the "1 level" (just calling .children() once) I am currently doing. jQuery.each(divToLookAt.children(), function(index, element) { //do stuff } ); This is what I'm current doing. To go a second layer deep, I run another loop after doing stuff code for each element. jQuery.each(divToLookAt.children(), function(index, element) { //do stuff jQuery.each(jQuery(element).children(), function(indexLevelTwo, elementLevelTwo) { //do stuff } ); } ); If I want to go yet another level deep, I have to do this all over again. This is clearly not good. I'd love to declare a "level" variable and then have it all take care of. Anyone have any ideas for a clean efficient jQueryish solution? Thanks!

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• Grails external Jms broker (active mq)

  - by TheBigS

  I have what will become an 'external' activemq server I'd like grails to be able to talk to. Right now I am just running it on my dev box. Here is what I have setup right now: 1) Run activemq server 2) Run activemq/examples using ant to produce messages 3) View ActiveMQ admin site: http://localhost:8161/admin/queues.jsp verify that messages are in the queue. 4) Follow Mini Tutorial to create the Service and Controller: http://www.grails.org/ActiveMQ+Plugin 5) Configured my Grails resources.groovy file as follows: beans = { jmsConnectionFactory(SingleConnectionFactory){ targetConnectionFactory = { ActiveMQConnectionFactory cf -> brokerURL = 'tcp://localhost:61616' } } } When I run the grails app I get a BindException saying port 61616 is already in use. How do I configure this to use my server that is already running? I've tried changing 'localhost' to '127.0.0.1' and to my LAN ip, but no luck, it keeps trying to setup its own embedded activemq server. Any ideas?

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• JQGrid: Dynamically set a cell to uneditable based on content

  - by Shawn

  I'm having some issues getting some cells (with cellEdit: true) to be non-editable even though the column is set to editable. I've tried many ways, like beforeEditCell, formatters, etc. None seem to work. The closest I've got is by setting a formatter to the column that I'd like to be editable and then using setCell to set the 'not-editable-cell' class (snippet below). The first time you click the cell, it unfortunately goes into edit mode, but if you click elsewhere and try to re-edit the cell, it's successfully uneditable. I've also tried using the same snipped but inside of beforeEditCell, it successfully stops the cell from being edited but in turn 'freezes' the grid. You can no longer select any other cell. function noEditFormatter(cellValue, options, rowObject) { if (cellValue == 'test') jQuery("#grid").jqGrid('setCell', options.rowId, 'ColName', '', 'not-editable-cell'); return cellValue; } Any help would be much appreciated.

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• keyboard in UIWebView shows and then hides itself on input focus

  - by Jake

  I have a page that's loading into a UIWebView (which takes 100% of the screen) on an iPad. When I touch a text field, the page positions the text field to the right place and the keyboard starts to come up, but then it turns around and goes back down and blur is called on the input field. When I try this same page in mobile Safari, the keyboard is able to deploy successfully. I can't figure out what the rules are for the keyboard to show successfully and stay up = and why this is different for uiwebview than safari. All my research on the subject has yielded no answers.

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• Best practice to avoid InvalidOperationException: Collection was modified?

  - by Roflcoptr

  Very often I need something like that: foreach (Line line in lines) { if (line.FullfilsCertainConditions()) { lines.Remove(line) } } This does not work, because I always get a InvalidOperationException because the Enumerator was changed during the loop. So I changed all my loops of this kind to the following: List<Line> remove = new List<Line>(); foreach (Line line in lines) { if (line.FullfilsCertainConditions()) { remove.Add(line) } } foreach (Line line in remove) { { lines.Remove(line); } I'm not sure if this is really the best way since in the worst case I have to iterate 2 times over the original list and so it needs time 2n instead of n. Is there a better way to do this?

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• Warehouse system

  - by TJ

  I work for an ecommerce company, and we're gearing up to make some updates to our warehouse system. During a meeting we were asked if there are any viable solutions available that could be integrated into our current systems. I was wondering if anyone had any opinions, or experiences they could share. Typical requirements: inventory management pick and pack shipping integration with USPS and UPS returns returns Thanks in advanced

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• Typedef equivalence in function arguments

  - by Warren Seine

  Hi guys, The question is kind of hard to ask without an example so here it is: #include <vector> struct O { }; struct C { template <typename T> void function1(void (C::*callback)(const O*)); template <typename T> void function2(void (C::*callback)(const typename T::value_type)); void print(const O*); }; int main() { C c; c.function1< std::vector<O*> >(&C::print); // Success. c.function2< std::vector<O*> >(&C::print); // Fail. } The error that I am given is: error: no matching function for call to ‘C::function2(void (C::*)(const O*))’. Basically, the only difference between calls is that in function2, I'm more generic since I use the typedef std::vector<O*>::value_type which should resolve to O*, hence similar to function1. I'm using G++ 4.2.1 (I know it's old), but Comeau confirms I'm wrong. Why does the compilation fail?

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• Customer session is different in different parts of a Magento website

  - by Josh Pennington

  I have a function inside of a Helper in Magento that returns whether or not a customer attribute equals one. Here is my Helper class class Nie_Nie_Helper_Data extends Mage_Core_Helper_Abstract { public function isNieAdmin() { if(Mage::getSingleton('customer/session')->getCustomer()->getNieAdmin() == 1) { return true; } else { return false; } } } Now when I call this function from a class that extends Mage_Core_Block_Template, everything seems to work fine. However when I try to use this inside one of my controllers, it does not work. In fact when I do Mage::getSingleton('customer/session')-getCustomer()-debug() the only variable that is returned is the website_id. Does anyone know what I have to do in order to get this to work? Thanks Josh Pennington

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• undefined method `code' for nil:NilClass message with rails and a legacy database

  - by Jude Osborn

  I'm setting up a very simple rails 3 application to view data in a legacy MySQL database. The legacy database is mostly rails ORM compatible, except that foreign key fields are pluralized. For example, my "orders" table has a foreign key field to the "companies" table called "companies_id" (rather than "company_id"). So naturally I'm having to use the ":foreign_key" attribute of "belongs_to" to set the field name manually. I haven't used rails in a few years, but I'm pretty sure I'm doing everything right, yet I get the following error when trying to access "order.currency.code": undefined method `code' for nil:NilClass This is a very simple application so far. The only thing I've done is generate the application and a bunch of scaffolds for each of the legacy database tables. Then I've gone into some of the models to make adjustments to accommodate the above mentioned difference in database naming conventions, and added some fields to the views. That's it. No funny business. So my database tables look like this (relevant fields only): orders ------ id description invoice_number currencies_id currencies ---------- id code description My Order model looks like this: class Order < ActiveRecord::Base belongs_to :currency, :foreign_key=>'currencies_id' end My Currency model looks like this: class Currency < ActiveRecord::Base has_many :orders end The relevant view snippet looks like this: <% @orders.each do |order| %> <tr> <td><%= order.description %></td> <td><%= order.invoice_number %></td> <td><%= order.currency.code %></td> </tr> <% end %> I'm completely out of ideas. Any suggestions?

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• Hiding tables that have no data to display.

  - by Kinyanjui Kamau

  Hi Guys, I have this css styling and was wondering what I need to change in order to collapse/hide html tables that are empty. The style: <style> #search_settings { position:relative; height:25px; width:500px; } #users_table_results { border-collapse:separate; empty-cells:hide; } #events_table_results { border-collapse:separate; empty-cells:hide; } #establishments_table_results { border-collapse:separate; empty-cells:hide; } </style> My HTML: <div id="search_settings"> <table width="500" border="0"> <tr> <td height="20" class="heading_text_18">Search results</td> </tr> </table> <table id="users_table_results" max-width="500" name="users" border="0"> <tr> <td width="50" height="50"><a href="#profile.php"><img src="Images/<?php echo $row_result_users['picture_thumb_url']; ?>" border="0" height="50" width="50"/></a></td> <td width="150" class="ordinary_text_12"><?php echo $row_result_users['user_first_name']; ?></td> <td width="150" class="ordinary_text_12"><?php echo $row_result_users['user_last_name']; ?></td> <td width="150" class="ordinary_text_12"><?php echo $row_result_users['username']; ?></td> </tr> </table> <table id="events_table_results" width="500" name="events" border="0"> <tr> <td width="50" height="50"><a href="#profile.php"><img src="Images/<?php echo $row_event['event_thumb_url']; ?>" border="0" height="50" width="50"/></a></td> <td width="150" class="ordinary_text_12"><?php echo $row_event['event_name']; ?></td> <td width="150" class="ordinary_text_12"><?php echo $row_event['event_venue']; ?></td> <td width="150" class="ordinary_text_12"><?php echo $row_event['event_date']; ?></td> </tr> </table> <table id="establishments_table_results" width="500" name="establishments" border="0"> <tr> <td width="50" height="50"><a href="#profile.php"><img src="Establishment_Images/<?php echo $row_establishment['establishment_thumb_url']; ?>" border="0" height="50" width="50"/></a></td> <td width="150" class="ordinary_text_12"><?php echo $row_establishment['establishment_name']; ?></td> <td width="150" class="ordinary_text_12"><?php echo $row_establishment['location_name']; ?></td> <td width="150" class="ordinary_text_12"><?php echo $row_establishment['establishment_pricing']; ?></td> </tr> </table> </div> I would want it such that if there are no results for my events table, the table does not show(there is no blank space between search results where event results should be because border=0). Can you hide entire tables?

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• Mod_rewrite trouble: Want to direct from ?= to a flat link, nothing seems to work.

  - by Davezatch

  I have a site that currently serves results as example.com/index.php?show=foo and I'd like it to read example.com/show/foo. My understanding is this would make them visible to search engine robots, and it seems a much simpler way to do this than to create a couple hundred html files... I've tried the following .htaccess code: Options +FollowSymLinks RewriteEngine on RewriteRule ^show/(.*)$ index.php?show=$1 [NC,L] No dice. Also tried this, which I found on another stack overflow question: <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^([0-9A-Za-z]+)/?$ /index.php?show=$1 [L] </IfModule> Any ideas on what I'm missing here?

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• Starting a second command while the first is still running from a batch file

  - by ids

  I am trying to create a batch file that will run a utility that opens a connection to a device on the internet then starts a telnet session. I am at the point where once the connection opens the batch file doesn't proceed. Batch file @echo off set /p serial=What are the last 8 of the STB's serial? udp.exe -c 127.0.0.1 23 %serial% x.x.x.x 11111 127.0.0.1 23 | telnet 127.0.0.1 Output What are the last 8 of the STB's serial? XXXXXXX Ready for XXXXXXX It just sits at the 'ready ...' line and never opens the telnet connection. I have tried various | and & but no luck.

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