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• Way to check for foreign key references before deleting in MySQL?

  - by Chad Johnson

  I'm working with a content management system, and users are prompted with a confirmation screen before deleting records. Some records are foreign key referenced in other tables, and therefore they cannot be deleted. I would like to display a message beside a given record if it has foreign key references. To know whether I should display the message for a record, I could just query the referencing table and see if there are references. But the problem is, there are about a dozen tables with records potentially referencing this record, and a lookup could take a "long" time. Is there an easy way to tell whether the record is delete-ready (ie. has no foreign key references)?

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• CakePHP Permissions, works fine on local server, but fails after upload.

  - by Alz454

  I created a website with CakePHP, set up all of the permissions so guests could view certain parts, and members only in certain areas, all with an administration panel. Whenever I test this on my local testing server, it works perfectly, if I login I can view the content, if I logout, I can't. However, when I upload exactly the same files and upload and import the database, it fails to work, it just disallows all member access regardless of if you're logged in or not, this even applies to administrators. I'm not sure what's going on here, any help would be appreciated. If you need any more information, just ask. Regards, Alz454.

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• JSF/HTML - Add a java applet to web page programmaticly.

  - by Ben

  Hi, Theres a web page i'm making which content is very dynamic and so I'm building it from inside the backing bean. I would like to add a java applet to the web page but I could not find the Java Object to correspond to the <applet> tag. So My questions are - What is the JAVA Object for an applet? How did you find it? (For similar future searches) Thanks! P.S - Just to be clear. An example: <h:PanelGroup> would be HtmlPanelGroup as a java object.

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• Storing Values in colunms alphabetic?

  - by Mdillion

  Is there any benefit to storing content alphabetic in columns? Maybe make lookups faster? If yes then when i add new lookup values to my tables do i need to rebuild the PK for the looup values to fit in the new text? Say a table like this: City_tbl city_id: example: 1120 City_name: example: New York. If I need to add Chicago to it, do i add it at the bottom of the list with the next ID which may be 2000 or do i inset it after the city in alphabetic order which would mean I need to update the PK Id of all following IDs by 1. Only benefit I know about is when I have to manually add lookup values without quering the database I can quickly check the lookup value list for exiting items with ease. But not sure if it may make lookups faster or something if the system knows the text is in aplhabetic order.

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• How do I execute an action in drupal after each time a node is saved?

  - by ford

  I'm developing an Action in Drupal which is supposed to activate after saving a node, exporting content to XML (which includes data from the node that was just saved), using the "Trigger: After saving an updated post" trigger. Unfortunately this action actually happens right before the information from the recently saved post is saved to the database. ie. when looking at the XML later, I find that the most recent change I made was not included. Saving after editing a different node will restore the previously missing data. How can I get my action to fire after the saving process is complete?

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• Anyway to improve my gzip PHP method?

  - by Joe

  I Gzip my pages currently like so: <?php ob_start("ob_gzhandler"); //my page content ob_flush(); ?> However, I read a comment somewhere, earlier on, that this method uses a lot of memory, and I know that my website has been using a lot of memory on my virtual private server, so I thought it would be nice if I knew a way to reduce memory usage. I tested my site with an online gzip tester which says my websites are sending gzipped pages, so my gzip method works, but the main obviously I'm looking for a less memory intensive option, if any. I appreciate all suggestions. :) Oh and merry christmas ;P

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• z-index of :before or :after to be below the element, Is that possibale?

  - by adardesign

  I am trying to style a element with the :before CSS property a.someSelector{position:relative; z-index:1;} a.someSelector:after{position:relative; z-index:0; content:" "; position:absolute; width:100px; height:100px;} It seems like the :after element can not be lower then the element itself. Is there a way [hack] to have the pseudo element lower then the element itself? Thanks

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• This is right way for database?

  - by ciss

  Hello, i have some issue with database. Okay, i have two models - Page and Item. Page for displaying some content. Item - this is item discription. So, i work on small ecommerce shop. Okay, all of this models can have some comments. So, this is my Comments model at this moment: Comments - string : id text : body integer : page_id integer : item_id So when some one add comment to page - page_id will be filled with current Page id. And if some one add comment to item - item_id will be filled. Okay, i know what the best way is to create STI or Polymorphic assoc, but does i really need this way for my situation? Sorry for my bad english, i'm from Russia.=)

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• Android: Maps - Best way to provide 'search for location' feature?

  - by r3mo

  Hello all, I've got an android app that uses a map activity and serves up content based on map location. I'm looking for a way to allow the user to search for a location by name (anything from 'New York' to 'Eiffel Tower') - e.g. have a text input field into which they could type 'Rome' - after pressing a button, the user would be brought to the coordinates of Rome on the map. What would be the best way to go about this? I've looked into the google geocoding api (http://code.google.com/apis/maps/documentation/geocoding/), but it has limitations of 2,500 geolocation requests per day - I'm presuming this is per API key? Or is it per user/source IP? 2,500 requests for one android app woudln't last long. Ideally, I would be able to search for English and foreign names of countries. Thanks in advance! r3mo

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• How to reduce latency of data sent through a REST api

  - by Sid

  I have an application which obtains data in JSON format from one of our other servers. The problem I am facing is, there is is significant delay when when requesting for this information. Since a lot of data is passed (approx 1000 records per request where each record is pretty huge) is there a way that compression would help reducing the speed. If so which compression scheme would you recommend. I read on another thread that they pattern of data also matters a lot on they type of compression that needs to be used. The pattern of data is consistent and resembles the following :desc=>some_description :url=>some_url :content=>some_content :score=>some_score :more_attributes=>more_data Can someone recommend a solution to how I could reduce this delay. They delay is approx 6-8 seconds. I'm using Ruby on Rails to develop this application and the server providing the data uses Python for the most part.

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• Zend Framework: How to handle exceptions in Ajax requests?

  - by understack

  Normally when an exception is thrown, Error controller takes command and displays error page with regular common header and footer. This behavior is not wanted in Ajax request. Because in case of error, whole html page is sent over. And in cases where I'm directly loading the content of http response in a div, this is even more unwanted. Instead in case of Ajax request, I just want to receive 'the actual error' thrown by exception. How can I do this? I think, one dirty way could be: set a var in ajax request and process accordingly. Not a good solution.

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• Actionscript / Flex: a question about handleAllEvents() method.

  - by Patrick

  Hi, in Adobe tutorials, they suggest to create a class to handle the events (see below the copy/pasted code, and link to page). I was wondering if I have to handle all events with the function handleAllEvents, using if statements to check if the target is the one I want, and the event is the one I want. i.e. if (event.type=="click") && (event.currentTarget == "myId") Should I have a list of ifs (for each target and each event type ?) thanks // events/MyStaticEventHandler.as package { // Empty package. import flash.events.Event; import mx.controls.Alert; public class MyStaticEventHandler { public function MyStaticEventHandler() { // Empty constructor. } public static function handleAllEvents(event:Event):void { Alert.show("Some event happened."); } } } Link (at the bottom): http://livedocs.adobe.com/flex/3/html/help.html?content=events_05.html

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• [cli/linux] get plain text from raw emails (not attachments extraction)

  - by etuardu

  Hi, having a raw email as input (i.e. the text between "DATA" and "." sent by a smtp client) I need to extract the mail content (which I know is always text only) as plain text. This means decoding transfer encoding (if any: could be base64 or quoted-printable), merging mutiparts (if any), and stripping headers. I tried various tools that would do that: mewdecode, uudecode, uudeview... I only managed to get this last one to work, but it won't output anything if the mail is not MIME encoded and it stores its output in an unpredictable (nor forceable) filename, so it's hard to use it in a not-interactive shell script. Since this is a pretty common job (every mail client have to do that), it's weird it's so complicated. Do you have some hints? (Actually, forcing uudeview to output in a certain file would be good enough). Thank you!

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• ID cannot be null (Auto Increment)

  - by THeK

  I'm using an INSERT ON DUPLICATE KEY statement for my website. It's for creating news items, so I figured I could use the same MySQL command for both creating and updating news items. However, when I use the following: INSERT INTO table (id,title,content) VALUES(NULL,"Test","Test"); Instead of creating a new auto increment value it throws an error. However, the command works on my main development server. But not on my laptop. Both versions of MySQL are the same, the only difference being MySQL was installed manually on my server, and with WAMP on my laptop. Are there any MySQL Variables that could be causing this?

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• PHP preg_match image between html tags

  - by Alvins

  I've got an html template like this: <div class="cont"> <div class="..."> <p>...<p> <img alt="" class="popup" src="DESIRED IMAGE LINK" style="..." /></p><p>...</p> .... And i want to extract "DESIRED IMAGE LINK" inside the "" tag, currently i'm using this: $pattern = '<div class="cont">.*?src=["\']?([^"\']?.*?(png|jpg|jpeg|gif))["\']?/i'; if (preg_match($pattern, $content, $image)) ..... But it doesn't work, the error is: warning: preg_match() [function.preg-match]: Unknown modifier '.' How can i fix it? Thanks

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• How do I get the icons of TinyMCE to show?

  - by ggfan

  I installed TinyMCE and I have the textbox and the functions work(such as , ) but I don't see the tool box that has displays all the functions. Like in this example. How do I get the images to show? All I have is the textbox. I used the code from the example link and theirs has the images and all I have is the textbox. What part do I edit to be able to see the icons? //my source link <script type="text/javascript" src="/tinymce/jscripts/tiny_mce/tiny_mce.js"> tinyMCE.init({ // Example content CSS (should be your site CSS) content_css : "style12.css", // Drop lists for link/image/media/template dialogs template_external_list_url : "/tinymce/examples/lists/template_list.js", external_link_list_url : "/tinymce/examples/lists/link_list.js", external_image_list_url : "/tinymce/examples/lists/image_list.js", media_external_list_url : "/tinymce/examples/lists/media_list.js",

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• Removing response.End() includes the html of the page.

  - by vinay_rockin

  HttpResponse response = Context.Http.Response; response.Headers.Clear(); response.Clear(); response.ContentType = Component.OverrideMimeType ? Component.MimeType : "application/download"; response.AppendHeader("Content-Disposition", String.Format("attachment; filename=\"{0}\"", HttpUtility.HtmlEncode(Path.GetFileName(file.FileName)))); response.OutputStream.Write(file.Contents, 0, file.Contents.Length); response.Flush(); // response.End(); if I use response.End() it throws exception and if I comment response.End() it includes the html of the page on which the download link resides. how want to download file with introducing this exta html. Any Idea how to fix this?

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• Is it possible to have a .NET route that maps to the same place as a directory?

  - by Austin

  I'm building a CMS using WebForms on .NET 4.0 and have the following route that allows URLs like www.mysite.com/about to be mapped to the Page.aspx page, which looks up the dynamic content. routes.MapPageRoute("page", "{name}", "~/Page.aspx"); The problem is that I have a couple of folders in my project that are interfering with possible URLs. For example, I have a folder called "blog" where I store pages related to handling blog functionality, but if someone creates a page for their site called "blog" then navigating to www.mysite.com/blog gets the following error: 403 - Forbidden: Access is denied. You do not have permission to view this directory or page using the credentials that you supplied. Other similar URLs route correctly, but I think because .NET is identifying /blog as a physical location on the server it is denying directory access. Is there a way to tell IIS / .NET to only look for physical files instead of files and folders?

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• after dup2, stream still contains old contents?

  - by BobTurbo

  so if I do: dup2(0, backup); // backup stdin dup2(somefile, 0); // somefile has four lines of content fgets(...stdin); // consume one line fgets(....stdin); // consume two lines dup2(backup, 0); // switch stdin back to keyboard I am finding at this point.. stdin still contains the two lines I haven't consumed. Why is that? Because there is just one buffer no matter how many times you redirect? How do I get rid of the two lines left but still remember where I was in the somefile stream when I want to go back to it?

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• Java : VolatileImage slower than BufferedImage.

  - by Norswap

  I'm making a game in java and in used BufferedImages to render content to the screen. I had performance issues on low end machines where the game is supposed to run, so I switched to VolatileImage which are normally faster. Except they actually slow the whole thing down. The images are created with GraphicsConfiguration.createCompatibleVolatileImage(...) and are drawn to the screen with Graphics.drawImage(...) (follow link to see which one specifically). They are drawn upon a Canvas using double buffering. Does someone has an idea of what is going wrong here ?

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• InApp subscriptions - trasferability

  - by meap

  Apple has rejected one of our apps, where the user can purchase content through subscriptions (InApp product type is subscription). The problem is that we need to, also because of Apple requiring it, these subscriptions to be transferable between devices. The logical and also the most secure solution would be to link it to a user account, that the user will have to create. But this was the reason why apple rejected this app. They have told us that for purchasing of subscriptions a registration can not be required, can be only optional. So the question is how to solve this if there is no other nice solution that would make sense, be secure and still comfortable for the user?

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• How to reset persistent scrollbar position after div refresh in FF3?

  - by rcon

  Hi, I'm experiencing a weird scrollbar issue. I'm building a page that uses jQuery and PHP to dynamically load images into a DIV sequentially. This DIV is a fixed height but uses a scrollbar for its variable width. The problem is that the scrollbar does not reset after a dynamic refresh of the DIV. So when the user scrolls and then refreshes with new content, the scroll bar position stays persistent instead of resetting back to the left. This seems to only happen in FF3. The scrollbar resets perfectly fine in Chrome, Safari, and IE8. For each refresh, the DIV is hidden, emptied, sized with CSS, then sequentially appended with images. I've tried resetting white-space: normal before the nowrap, playing around with overflow, and also jQuery's scrollLeft to no avail. It still behaves strangely in FF3, and only FF3. http://www.shadowshapes.com/uttdev/ Click a thumbnail, move the scrollbar then click another thumb. Thanks for any help!

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• advanced css: top and bottom with flexible centre

  - by Haroldo

  is it possible with just css2 to have the following: all the content to be in the flexible div.mid section overlap the top and bottom parts not fussed about ie6 here's the photoshop with centre slice: as you can see the top and bottom parts are quite large and i need to overlap them from the middle slice... Please dont misunderstand here, i understand how to make a flexible central div, the complexity is in the overlapping of the top and bottom while the mid div remains flexible. I imagine it requires either negative margins or absolutely position top and bottoms elements with z-index..

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• How to correctly migrate urls from custom asp.net solution to Wordpress?

  - by Marek

  I have a web site built using asp.net with ugly URLs like /DisplayContent.aspx?id=789564. I know how to migrate the database, but the Wordpress urls will be (naturally) different. Can I simply write some mapping or do I have to include a rewrite rule for each subpage (300 pages) in .htaccess? Should I provide a rewrite rule for each existing page that would transform a full old url to the known new url, like for example: /DisplayContent.aspx?id=789798 -> /2010-5-10/Title-Of-The-Post Even if I manage to migrate the URLs, the structure of the HTML for the new content will naturally be different. How does this affect SEO? Should I run asp.net and wordpress side by side and issue the redirects from the asp.net application? What is the most efficient solution to this kind of migration of URLs without doing PHP programming?

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• Button stops working after loading div via ajax

  - by asovgir

  I have two divs on the page: main div and secondary, which loads a separate html page using ajax. All the links within the main div trigerred by a click event continue to work correctly and reference the appropriate content, but none of the jquery outside this div works (such as the navigation). Here's my jQuery: var url; $('.main a').live('click',function() { url = $(this).attr('href'); $('.secondary').load(url); return false; }); Can anyone help me why this isn't working? I think I am supposed to trigger a callback event but I am not sure how to do so. I know this question has been asked multiple times already (usually suggesting to use .live() or .on()), but none of those solutions seemed to work for me.

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