form lifecycle - Page 577

Comment Author Link on Wordpress

- by knightrider

Hello, At the wordpress form, when you leave comment as guest, there's a website field to fill your web address. If we fill in that box, we can get the link by calling this function <?php echo get_comment_author_link(); ?> But if you are logged in and you don't add the website at your profile, when you leave comment. It doesn't have the link on your username. What I want is, if the logged-in user doesn't have the website, there will be the link which will be carry them to their profile page which is something like http://www.example.com?author=21 Is there any function that i can use out there ? Please help me out. Thank you.

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What would you use for auto completion in Rails app?

- by Andrei

I want to use auto-completion in a number of fields (5-7) in my forms. There is a screencast on auto-completion with Prototype library by Ryan Bates ( http://railscasts.com/episodes/102-auto-complete-association). On the other hand, I have noticed that quite many guys suggest jQuery for this task ( http://jquery.bassistance.de/autocomplete/demo/). And I guess, there was probably some development last year(s), so I ask you - what would you use nowadays to auto-complete your form fields and why? BTW, I still have an open question on auto completion for HABTM association: http://stackoverflow.com/questions/1510935/how-to-do-habtm-management-with-auto-completion-in-rails

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How to escape/strip special characters in the LaTeX document?

- by Igor

We implemented the online service where it is possible to generate PDF with predefined structure. User can choose a LaTeX template and then compile it with an appropriate inputs. The question we worry about is the security, that the malicious user was not able to gain shell access through the injection of special instruction into latex document. We need some workaround for this or at least a list of special characters that we should strip from the input data. Preferred language would be PHP, but any suggestions, constructions and links are very welcomed. PS. in few word we're looking form mysql_real_escape_string for LaTeX

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Implementing Transparent Persistence

- by Jules

Transparent persistence allows you to use regular objects instead of a database. The objects are automatically read from and written to disk. Examples of such systems are Gemstone and Rucksack (for common lisp). Simplified version of what they do: if you access foo.bar and bar is not in memory, it gets loaded from disk. If you do foo.bar = baz then the foo object gets updated on disk. Most systems also have some form of transactions, and they may have support for sharing objects across programs and even across a network. My question is what are the different techniques for implementing these kind of systems and what are the trade offs between these implementation approaches?

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JButtons re-enable themselves after being disabled

- by Anarchist

I have an array of JButtons which form a keypad interface. After six numbers are entered I want to disable the keypad so that no further numbers can be entered by the user. I have written the code and the buttons do disable until the mouse hovers above any of them, then the buttons seem to re-enable themselves and run actionEvents added to them. The full code is available here. Possible things that I think are wrong. There is some sort of MouseListener which is ignoring when I set button.setEnabled(false); I haven't separated attributes from the buildGUI(); correctly, I only did this anyway so that the inner class could access them. Possibly something to do with the gridLayout as disabling the buttons seems to work for my services JPanel buttons.

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Custom component creation - how to add small icon representing component in Tool Palette?

- by Wodzu

Please bear in mind that I've read all the instructions I could find about adding component icon to my custom component. And I am able to do this when we talk about the icon size which is 24x24 pixels. I see the icon when a component is dropped on the form. However I can not see the small 16x16 icon which should be displayed when browsing Tool Palette. I've read that I should name my two other BMP files which are contained in DCR file like this: MyComponentName16 [for 16x16 BMP file] MyComponentName32 [for 32x32 BMP file] Unfortunately this does not seem to work, I've tried to restart Delphi few times in hope that it might be the case of not refreshing something, but without any success. Any ideas?

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ASP.NET MVC View Not posting back to Post method and expecting a parameterless Constructor?

- by VJ

Hi, I am trying to post back some data using a viewmodel i have created and it works for me for one of the projects.But I am doin this right now public ActionResult Foo(string userkey) { vm.Value="Xvalue"; return View(vm); } [HttpPost] public ActionResult Foo( MyViewModel vm) { // process input if (inputOK) string value=vm.Value return RedirectToAction("Index"); return View(); } public class MyViewModel { public string Value { get; set; } public SomeClass newobj {get;set;} } public class SomeClass { public int id{get;set;} public string str{get;set;} } So it on debugging never goes into the parameter method for Post although on the view i have added a form and a button that submits and the page inherits from the viewmodel.I get an error saying it expects a parameterless constructor how do I fix this ? . I wrote an post method with no parameters and it does go into that method

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Multiple-File Template Implementation

- by Maxpm

With normal functions, the declaration and definition are often separated across multiple files like so: // Foo.h namespace Foo { void Bar(); } . // Foo.cpp #include "Foo.h" void Foo::Bar() { cout << "Inside function." << endl; } It is my understanding that this cannot be done with templates. The declaration and definition must not be separate because the appropriate form of the template is created "on-demand" when needed. So, how and where are templates typically defined in a multiple-file project like this? My intuition is that it would be in Foo.cpp because that's where the "meat" of functions normally is, but on the other hand it's the header file that's going to be included.

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Running Python code from Java program, shoudl i be doing this?

- by Space Rocker

i have a scenario where i draw a network and set all it's paraments on swing based gui, after that i have to translate this network into a python based script which another framework reads and realize this network in the form of virtual machines. As an example have look here: from mininet.topo import Topo, Node class MyTopo( Topo ): def *__init__*( self, enable_all = True ): super( MyTopo, self ).__init__() Host = 1 Switch = 2 self.add_node( Switch, Node( is_switch=True ) ) self.add_node( Host, Node( is_switch=False ) ) self.add_edge( Host, Switch ) self.enable_all() topos = { 'mytopo': ( lambda: MyTopo() ) } It simply connects a host to a switch and realize this topology on mininet framework. Now for now in order to realize the drawn network on java GUI here is what i am doing: I simply take the information from GUI and creates a new python file like the one above using java code and then run this file in mininet, which works fine somehow. I want to know, is this the correct and robust way how i am doing this or should i be looking further into java-python bridge like scenarios to be more effective or so as to say more professional.

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url or content as a variable in the header of the page

- by Scorpion King

I am designing a site where external links form various are being shown on my page. I am using $url=$_GET['url']; $website_data = file_get_contents($url); echo $website_data; so essentially a user would click on a hyperlink which is something like www.test.com/display_page.php?url=http://www.xyz.com/article/2.jpg My page, list_of_images.php, typically has a list of images with href for each image as above on the page and when any image is clicked it would go to display_page.php, which would show our banner on the top of this page, some text and then this image beneath that. This image could be from any website. I am currently sending the url directly and grabbing it using GET. I understand that users/hackers can actually do some coding and send commands for the url variable and could break the server or do something harmful and so i would like to avoid this method or sending the url directly in the header. what is the alternate approach for this problem?

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MVC Custom Model Binder Binding Multiple Values

- by BMD86

Hello everyone, I have a scenario in which I have multiple sources to bind to my model. For one, I have a view tied to a strongly-typed model, but this scenario also entails posting data to this view from a 3rd party site. Essentially, what I believe I am after in the custom model binding is to investigate the form values in the Request object within HTTPContext to see if I have a field such as "postedFirstName". If so, I want to bind that value instead of the textbox "FirstName" in my view. I've done a good bit of searching but have not find anything that exactly addresses such a scenario. This link was close, I thought, but not quite: http://stackoverflow.com/questions/970335/asp-net-mvc-mixing-custom-and-default-model-binding Any input is greatly appreciated!

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How to handle Foreign key for optional field in .NET

- by brz dot net

What is the best way to handle following situation? A dropdown(for master table) is optional in a particular form. But, In database table the field is constrained with foreign key. If user don't select from dropdown then It creates problem because of foreign key. One solution is to create default option in master table and use it in case of blank selection. but in dropdown, we need to handle this to show on top. Is it perfect solution? Is there any other optimized solution for this? Thanks

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Resources for memory management in embedded application

- by Elazar Leibovich

How should I manage memory in my mission critical embedded application? I found some articles with google, but couldn't pinpoint a really useful practical guide. The DO-178b forbids dynamic memory allocations, but how will you manage the memory than? preallocate everything in advance and send a pointer to each function that needs allocation? Allocate it on the stack? Use a global static allocator (but then it's very similar to dynamic allocation)? Answers can be of the form of regular answer, reference to a resource, or reference to good opensource embedded system for example. clarification: The issue here is not whether or not memory management is availible for the embedded system. But what is a good design for an embedded system, to maximize reliability.

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Can I create a transaction using ADO NET Entity Data Model?

- by Junior Mayhé

Hi is it possible on the following try-catch to execute a set of statements as a transaction using ADO NET Entity Data Model? [ValidateInput(false)] [AcceptVerbs(HttpVerbs.Post)] public ActionResult Create(Customer c) { try { c.Created = DateTime.Now; c.Active = true; c.FullName = Request.Form["FirstName"]; db.AddToCustomer(c); db.SaveChanges(); Log log = new Log();//another entity model object log.Created = DateTime.Now; log.Message = string.Format(@"A new customer was created with customerID {0}", c.CustomerID); db.AddToLog(log); db.SaveChanges(); return RedirectToAction("CreateSuccess", "Customer"); } catch { return View(); } } Any thoughts would be very appreciated.

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Better data-structure design

- by Tempname

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Error on SQL insert statement

- by Ashley Stewart

I exported a recordset from one database into a csv file, and when I try to import it into another using mysql workbench I keep this this error message: Executing SQL script in server ERROR: Error 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' 'Lord it Over', 'Ben', '1993-03-01', 'TRC', NULL, 1983, '1999-09-01', 'NULL', '' at line 1 INSERT INTO `TRC`.`horse` (`horse_id`, `registered_name`, `stable_name`, `arrival_date`, `last_known_location`, `is_ex_racer`, `birth_year`, `death_date`, `horse_comments`, `sex`, `referral_date`, `horse_height`, `arrival_weight`, `passport_no`, `microchip_no`, `is_on_waiting_list`) VALUES (, 'Lord it Over', 'Ben', '1993-03-01', 'TRC', NULL, 1983, '1999-09-01', 'NULL', 'NULL', 'NULL', NULL, NULL, 'NULL', 'NULL', 0) SQL script execution finished: statements: 29 succeeded, 1 failed Fetching back view definitions in final form. Nothing to fetch Any help would be appreciated as their appears to be no errors as far as I can see.

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PgJDBC: "no suitable driver found" when following tutorial, why?

- by Celeritas

I'm writing a Java program that queries a PostgreSQL database. I'm following this example and have trouble here: connection = DriverManager.getConnection( "jdbc:postgresql://127.0.0.1:5432/testdb", "mkyong", "123456"); According to the JavaDoc for DriverManager the first string is "a database url of the form jdbc:subprotocol:subname. When I connect to the server I type in psql -h dataserv.abc.company.com -d app -U emp24 and give the password qwe123 (for example sake). What should the first argument of getConnection be? I've tried connection = DriverManager.getConnection( "jdbc:postgresql://dataserv.abc.company.com", "emp24", "qwe123"); and get the run time error: no suitable driver found. I've download JDBC4 Postgresql Driver, Version 9.2-1000.

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How to set datetimepicker value to only date in (.NET)

- by salhzmzm

Hi I have DateTimePicker on my form and I set a value to the custom format property to "dd/MM/yyyy" ant when I run this code: MessageBox.Show(dateTimePicker1.Value.ToString()); I get this value : "3/26/2010 1:26 PM". How I can remove the time part from value. I know we can use this method dateTimePicker1.Value.ToShortDateString(); but I want to set the value property to this format "dd/MM/yyyy" so the output will be like this "26/3/2010", because I want to store the value in my DB (SQL) How I can do that?

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Nullable enum in html helper

- by Fabien Piron

I have a view model that contains enum with nullable type like this one : public StudyLevel? studyLevel { get; set; } I have made custom html helper to display a dropdownlist for rendering the enum into the view, the nullable case is displayed using <option value="null">No value</option> the problem is that when i submit the form modelstate give me the error : studylevel cannot be "null" . Could you suggest me any way to help me handle the nullable type in the view ?

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problem in Latex

- by qwerty

Hellom I have a problem in Latex: if i have: \begin{enumerate} \item Alert - Mesaje de avertizare, erori, etc. \item Form - Permite crearea de ecrane compuse din alte componente, cum ar fi imagini (Image) sau articole derivate din Item (ChoiceGroup, CustomItem, DateField, Gauge, ImageItem, Spacer, StringItem, TextField). \item List - Ecran pentru selectarea unei op\c tiuni dintr-o mul\c time prestabilit\u a. \item TextBox - Ecran pentru introducerea unui text. \end{enumerate} \bf BIBLIOGRAFIE \linebreak \linebreak 1.suport\hspace{0.2cm}curs then, i wanna display that BIBLIOGRAFIE after the last item, but with two lines between them. So i have "TextBox - Ecran pentru introducerea unui text.", then two lines, then BIBLIOGRAFIE. how can i write that? with this code, the space between List and TextBox items are very large, and BIBLIOGRAFIE is displayed at the buttom... why? if i use \linebreak after \end{enumerate} i got a compile error Please help Thankls!

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How to handle existing indexed Mixed Case url's?

- by marcusstarnes

I have an asp.net web forms application that has been live for a number of years and as such has quite a lot of indexed content on google. Ideally, I'd prefer that all Url's for the website are in lowercase but I understand that having 2 versions of the same content indexed in search engines (MixedCase.aspx and mixedcase.aspx) will be bad for seo. I was wondering: a) Should I just leave everything in its current Mixed Case form and never change it? OR b) I can change the code so everything is in lowercase from here on in, BUT, is there a way of doing this so as the search engines are aware of this change and don't penalise me?

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Jquery counting elements by class what is the best way to implement this?

- by 133794m3r

Ok what i'm trying to do is to count all of the elements in the current page with the same class and then i'm going to use it to be added onto a name for a input form. Basically i'm allowing users to click on an and then by doing so add another one for more of the same type of items. But i can't think of a way to count all of these simply with jquery/javascript. I was going to then name the item as something like name="whatever(total+1)", if anyone has a simple way to do this i'd be extremely grateful as javascript isn't exactly my native tongue and stack overflow usually has a ton of great answers and a great community so i'm hoping my query will not go unheard.

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creating BeanInfo objects in NetBeans 6.1 does not work for some objects

- by Coder

I have recently learned about BeanInfo classes in Java, and have successfully used them to add icons to my custom GUI components which extend swing components such as JTextField, however i have a more specialized GUI component which extends from another one of my GUI components, which then extends from JTextField. Ie. the class hierarchy is of the form "A - B - JTextField". I can create a bean info object that works for class B, but when i click on the bean info editor option in netbeans to create a bean info object for class A, nothing happens. Ie. there is no error pop-up and a bean info object is not created. There isn't much difference between class A and B. Both A and B have default no argument constructors and they are very similar to each other. The only thing i can really think of is that A uses generics and B does not. I would like to create a beaninfo object for class A so that i can add custom icons for that component. Any help would be appreciated. Thanks.

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jquery fancybox not showing overlay correct

- by George Grigorita

I have fancybox setup on this wordpress site: http://melisayavas.com/web/ When a user click on the bottom link News subscription the ajax pop-up box appears but the overlay doesn't float over the main content. This is the fancybox code that I used: <script type="text/javascript"> $(document).ready(function() { $(".fancybox").fancybox(); }); $(document).ready(function() { $(".various").fancybox({ maxWidth : 800, maxHeight : 600, fitToView : true, width : '70%', height : '70%', autoSize : true, closeClick : false, openEffect : 'none', closeEffect : 'none' }); }); </script> This is the link that the fancybox AJAX is shouwing: http://melisayavas.com/web/wp-content/themes/murtaugh-HTML5-Reset-Wordpress-Theme-8aa6329/subscribe.html - it's a mailchimp form. I have no idea why the overlay doesn't work properly...

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How can i pass a single additional argument to array_map callback in PHP?

- by Gremo

How can i pass a single additional argument to array_map callback? In my example i'd like to pass $smsPattern (as a second argument, after current element in $featureNames) to the function array_map with $getLimit closure: $features = $usage->getSubscription()->getUser()->getRoles(); // SMS regular expression in the form of ROLE_SEND_SMS_X $smsPattern = '/^ROLE_SEND_SMS_(?P<l>\d+)$/i'; // Function to get roles names and X from a role name $getNames = function($r) { return trim($r->getRole()); }; $getLimit = function($name, $pattern) { if(preg_match($pattern, $name, $m)) return $m['l']; }; // Get roles names and their limits ignoring null values with array_filter $featuresNames = array_map($getNames, $features); $smsLimits = array_filter(array_map($getLimit, $featureNames, $smsPattern)); With this code i'm getting a weird warning: Warning: array_map() [function.array-map]: Argument #3 should be an array. Of course di reason is for reusing $getLimit closure with another regular expression like $smsPattern. Thanks.

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- by knightrider

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