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  • Display error when entire form is blank in CodeIgniter

    - by Joe
    I'm trying to create a fairly simple form that has a few checkboxes and input fields and a textarea. Nothing is required by itself; however, if 'A' checkbox is checked, then 'A' input field is required (and so on for the couple other checkboxes I have). I have the above functionality in place, but I'm having a tough time figuring out how to have an error returned if the form is submitted blank (since nothing is required by default). Does anyone know of an easy-ish solution for this? It seems like it should be so simple... Thanks

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  • remove params from form request

    - by joe
    Hello folks, Upon user interaction, I need to remove certain input params from an HTML form before submission. Using javascript to remove the input fields from the DOM doesn't seem to actually remove the params from being sent through the request. Is there a way to delete or clear the actual request params?

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  • Does it mean JVM Suspended?

    - by Joe.wang
    When my application run . I got a message says : Ping: Timed out waiting for signal from JVM. The JVM was launched with debug options so this may be because the JVM is currently suspended by a debugger. Any future timeouts during this JVM invocation will be silently ignored. What does that mean? It seems it will block any web request from outside? because when I upload a file to it, it failed. help me .

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  • How, with javascript, can i read Childnode content on an XML file that contains html tags

    - by Joe
    to read a child node content i use : MYDATA = xhr.responseXML.getElementsByTagName("MenuItem") [INDEX].getElementsByTagName("PageContent")[0].childNodes[0].nodeValue; sometimes when the childnode data contains an HTML tag (eg b or br tags, because they have the <), i have problems since they are counted like xml tags (like childnodes). my question is how to get the entire data from a child node even if it contains other html tags exp : MenuItem MenuText menu b text b MenuText MenuItem would return "menu" !!! but i want it to return :"menu text" thank you guys, and happy new year

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  • Why does PDO print my password when the connection fails?

    - by Joe Hopfgartner
    I have a simple website where I establish a connection to a Mysql server using PDO. $dbh = new PDO('mysql:host=localhost;dbname=DB;port=3306', 'USER', 'SECRET',array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8")); I had some traffic on my site and the servers connection limit was reached, and the website throw this error, with my PLAIN password in it! Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[08004] [1040] Too many connections' in /home/premiumize-me/html/index.php:64 Stack trace: #0 /home/premiumize-me/html/index.php(64): PDO-__construct('mysql:host=loca...', 'USER', 'SECRET', Array) #1 {main} thrown in /home/premiumize-me/html/index.php on line 64 Ironically I switched to PDO for security reasons, this really shocked me. Because this exact error is something you can provoke very easily on most sites using simple http flooding. I now wrapped my conenction into a try/catch clause, but still. I think this is catastrophic! So I am new to PDO and my questino is: What do I have to consider to be safe! How to I establish a connection in a secure way? Are there other known security holes like this one that I have to be aware of?

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  • Retrieving friend's likes from the Facebook Graph API

    - by Joe Frank
    Howdy- I have been tooling around with the Facebook Graph API and successfully retrieved back a list of my likes, and a list of my friends (once I authenticated using OAuth). But what I really want to achieve is pulling back my friend's likes. When I try and do that, obviously using the same URL that I use to pull back my own likes but subbing the friend's user id for "me", I don't get anything back, unless they have installed the app as well. Then I get them no problem. To be clear, I can only see the likes of friends who have installed my application. So clearly I am running into a security/rights issue of some sort. I could see where this would be the case; you simply aren't allowed to see your friend's likes unless they have installed the same app. Fair enough, but then how is blekko.com doing it? I even tried using FQL without much luck. I suspect I am missing something totally obvious. Anyone had any luck with this? Maybe with the Javascript API or one of the other access methods? Thanks in advance for any guidance.

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  • How do you get speech dictated without adding it to a grammar list?

    - by joe
    I'm new to Speech Recognition, and I'm working on a project that will receive a command from a recognizable list. For example, I would say "Play song". The computer would ask the song title, and I can say it. It will then compare my answer to my music library and find it. I know how to add recognizable grammar to the SpeechRecognizer object, how to make the computer speak, and how to play a song in iTunes. I cannot, however, figure out how to get it to dictate or listen and interpret something that isn't in the grammar list. Is there a method I'm missing? Or not yet been simplified by Microsoft? I have no code to show for this, as I am not even sure how to search for this particular idea. Of course, I could have the program read my entire library, but that's not an optimal solution considering I have tens of thousands of songs. Thanks in advance!

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  • Jquery and CSS switching - is this possible?

    - by Joe
    I build a css file using PHP which allows me to easily customize the color of many elements. Is it possible for me to "rebuild" the stylesheet and apply it to the page in the DOM using Jquery? eg. <?php if (isset($_POST['mycolor'])){ $myColor = $_POST['mycolor']; } else { $myColor = "blue"; } ?> <style type='text/css'> .style1{ color:<?php $myColor;?>; } </style> Now on my page I have a link you can click called "change color to red" and when you click "red" it does a $.post to my php script, which rebuilds the css including .style1 - and allows the page to change the stylesheet. I haven't tested this but would it even work? If I echo'ed out the new stylesheet after the post into the dom... would it even apply to the page?

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  • Is there any difference between "foo is None" and "foo == None"?

    - by Joe Shaw
    Is there any difference between: if foo is None: pass and if foo == None: pass The convention that I've seen in most Python code (and the code I myself write) is the former, but I recently came across code which uses the latter. None is an instance (and the only instance, IIRC) of NoneType, so it shouldn't matter, right? Are there any circumstances in which it might?

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  • Static constructor can run after the non-static constructor. Is this a compiler bug?

    - by Joe H
    The output from the following program is: Non-Static Static Non-Static Is this a compiler bug? I expected: Static Non-Static Non-Static because I thought the static constructor was ALWAYS called before the non-static constructor. I tested this with Visual Studio 2010 using both .net 3.5 and .net 4.0. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace StaticConstructorBug { class Program { static void Main(string[] args) { var mc = new MyClass(); Console.ReadKey(); } } public class MyClass { public MyClass() { Console.WriteLine("Non-static"); } static MyClass() { Console.WriteLine("Static"); } public static MyClass aVar = new MyClass(); } }

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  • bash shell date parsing, start with specifc date and loop through each day in month

    - by Joe Stein
    Hi, I need to create a bash shell script starting with a day and then loop through each subsequent day formatting that output as %Y_%m_d I figure i can submit a start day and then another param for the number of days. My issue/question is how to set a DATE (that is not now) and then add a day. so my input would be 2010_04_01 6 my output would be 2010_04_01 2010_04_02 2010_04_03 2010_04_04 2010_04_05 2010_04_06 Thanks

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  • ASP.NET GridView - how to enable validation declaratively

    - by Joe
    It it possible to enable validation in an ASP.NET GridView purely declaratively? What I've tried: A GridView bound to an ObjectDataSource with SelectMethod and UpdateMethod defined The GridView contains some ReadOnly BoundField columns and a TemplateField whose EditTemplate contains a TextBox and a RegularExpressionValidator that only allows numeric input in the TextBox. The GridView also contains a CommandField with ShowEditButton=true and CausesValidation=true. If I click on Edit, enter an invalid value, then click on Save, there is a PostBack, and an exception is thrown in the server (Input string was not in a correct format). I can of course avoid this by adding validation code to the RowUpdating event handler on the server (see below), but is there any declarative way to force the validation to be done without adding this code? protected void MyGridView_RowUpdating(object sender, GridViewUpdateEventArgs e) { Page.Validate("MyValidationGroup"); if (!Page.IsValid) { e.Cancel = true; } }

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  • CSS Differences Between IE and FF

    - by Joe Majewski
    I hope I'm not breaking any rules by asking a question that pertains to a project I'm working on. If you view my page here and view it in Firefox and again in Internet Explorer, the width of the main content boxes differs. In Firefox, everything aligns perfectly with the advertisement at the top of the page, but in IE, the width of the content boxes seems to fall short by about 20 or so pixels. My question is obvious by now, but what is causing the width in IE to fall short, and what would a simple solution be? If I happen to be breaking the rules by asking a question that is not generic enough to benefit others, then allow me to rephrase it; what would be the best approach to solving visual differences between browsers? Should I use a separate CSS file for IE, or is there a way to define lines in my CSS file that only get rendered by a specific browser? It would be best if someone could provide me with the necessary CSS to align things properly, but I would be more than happy to learn about how to make the CSS dynamic (if that's possible). Thanks everyone. :)

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  • What's the best practice for handling system-specific information under version control?

    - by Joe
    I'm new to version control, so I apologize if there is a well-known solution to this. For this problem in particular, I'm using git, but I'm curious about how to deal with this for all version control systems. I'm developing a web application on a development server. I have defined the absolute path name to the web application (not the document root) in two places. On the production server, this path is different. I'm confused about how to deal with this. I could either: Reconfigure the development server to share the same path as the production Edit the two occurrences each time production is updated. I don't like #1 because I'd rather keep the application flexible for any future changes. I don't like #2 because if I start developing on a second development server with a third path, I would have to change this for every commit and update. What is the best way to handle this? I thought of: Using custom keywords and variable expansion (such as setting the property $PATH$ in the version control properties and having it expanded in all the files). Git doesn't support this because it would be a huge performance hit. Using post-update and pre-commit hooks. Possibly the likely solution for git, but every time I looked at the status, it would report the two files as being changed. Not really clean. Pulling the path from a config file outside of version control. Then I would have to have the config file in the same location on all servers. Might as well just have the same path to begin with. Is there an easy way to deal with this? Am I over thinking it?

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  • How to pass an integer to create new variable name?

    - by Joe
    I have 50 svg animations named animation0, animation1, animation2 etc. and I want to load them when the integer 0 to 49 is passed to this function: function loadAnimation(value){ var whichswiffy = "animation" + value; var stage = new swiffy.Stage(document.getElementById('swiffycontainer'), whichswiffy); stage.start(); } It doesn't work at the moment, maybe it's passing 'whichswiffy' rather than 'animation10'? Any ideas?

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  • page_load another handler?

    - by joe doe
    can someone please explain why this code is not working as expected: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class temp : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { Response.Write("foo<br>"); this.Load += new EventHandler(temp_Load); } void temp_Load(object sender, EventArgs e) { Response.Write("bar<br>"); Response.End(); } } trying to add another handler for page Load event so that output would be: foo<br> bar<br>

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  • Help Installing phpMyAdmin on Linux Server

    - by Joe Majewski
    I constantly get this error when attempting to view index.php in the phpMyAdmin folder I have setup: Cannot start session without errors, please check errors given in your PHP and/or webserver log file and configure your PHP installation properly. I am using subversion with three co-workers and I am trying to install this on my repository, which is at /svni3/myusername/intranet/ on our linux development server. I do have shell access so I would be able to install it somewhere else if that may be causing the problem. My config.inc.php file looks like this (only the things I changed): $cfg['blowfish_secret'] = 'blah'; $cfg['Servers'][$i]['auth_type'] = 'cookie'; //$cfg['Servers'][$i]['user'] = 'username'; //$cfg['Servers'][$i]['password'] = 'password'; $cfg['Servers'][$i]['host'] = 'localhost'; Other helpful information??? When I ping localhost it works. When I run the command "ls -l /var/lib/php": drwxrwx--- 2 root apache 4096 2009-04-17 02:31 session If there's anything else that may be helpful let me know; this has been plaguing me for a few hours now.

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  • Struggling to "clear" a CGLayer -- can it even be done?

    - by Joe Blow
    So I'm doing this repetitively - making a CGLayer, doing some processing, and then releasing it. This happens a lot in real time -- so surely there is a lot of overhead in making a whole new CGLayer each time? Surely it would be better to just keep lair around, and start fresh each time? However, I do not know any way, at all, to "erase" or "start from blank" a CGLayer?? Can anyone help on this? There is a function CGContextBeginPath(cc) but it's confusing: it seems to only clear out "that" path, it does not erase all of the CGLayer back to a blank canvas. how to return a CGLayer to a blank canvas????? Does anyone know? CGLayerRef lair = CGLayerCreateWithContext( UIGraphicsGetCurrentContext(), CGSizeMake(1024,768), NULL); CGContextRef cc = CGLayerGetContext(ether); // various processing here CGContextAddPath(cc, somePath); // various processing here CGLayerRelease(lair); Any ideas?!

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  • Ruby on Rails: has_many through frustrations

    - by Joe Cairns
    I'm having a frustrating problem with a has_many through: namely the fact that the through models are not created until save. Unfortunately, I need to set data on these models prior to saving the parent. Here's the loose setup: class Wtf < ActiveRecord::Base belongs_to :foo belongs_to :bar end class Bar < ActiveRecord::Base has_many :wtfs has_many :foos, :through => :wtfs end class Foo < ActiveRecord::Base has_many :wtfs has_many :bars, :through => :wtfs def after_initialize Bar.all.each do |bar| bars << bar end end end Everything is fine except that I need to access the "wtf"'s prior to save: f = Foo.new = # f.bars = [list of bars] empty list here f.wtfs = [] f.save! = true now I get stuff f.wtfs = [list of stuff] I even went so far as to explicitly create the wtfs doing this: def after_initialize Bar.all.each do |bar| wtfs << Wtf.new( :foo => self, :bar => bar, :data_i_need_to_set => 10) end end This causes the f.wtfs to be populated, but not the bars. When I save and retrieve, I get double the expected wtfs. Anyone have any ideas?

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  • In game programming are global variables bad?

    - by Joe.F
    I know my gut reaction to global variables is "badd!" but in the two game development courses I've taken at my college globals were used extensively, and now in the DirectX 9 game programming tutorial I am using (www.directxtutorial.com) I'm being told globals are okay in game programming ...? The site also recommends using only structs if you can when doing game programming to help keep things simple. I'm really confused on this issue, and all the research I've been trying to do is very confusing. I realize there are issues when using global variables (threading issues, they make code harder to maintain, the state of them is hard to track etc) but also there is a cost associated with not using globals, I'd have to pass a loooot of information around very often which can be confusing and I imagine time-costing, although I guess pointers would speed the process up (this is my first time writing a game in C++.) Anyway, I realize there is probably no "right" or "wrong" answer here since both ways work, but I want my code to be as proper as I can so any input would be good, thank you very much!

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