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• How to store millions of pictures about 2k each in size

  - by LuftMensch

  We're creating an ASP.Net MVC site that will need to store 1 million+ pictures, all around 2k-5k in size. From previous ressearch, it looks like a file server is probably better than a db (feel free to comment otherwise). Is there anything special to consider when storing this many files? Are there any issues with Windows being able to find the photo quickly if there are so many files in one folder? Does a segmented directory structure need to be created, for example dividing them up by filename? It would be nice if the solution would scale to at least 10 million pictures for potential future expansion needs.

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• keep viewdata on RedirectToAction

  - by Thomas Stock

  [AcceptVerbs(HttpVerbs.Post)] public ActionResult CreateUser([Bind(Exclude = "Id")] User user) { ... db.SubmitChanges(); ViewData["info"] = "The account has been created."; return RedirectToAction("Index", "Admin"); } This doesnt keep the "info" text in the viewdata after the redirectToAction. How would I get around this issue in the most elegant way? My current idea is to put the stuff from the Index controlleraction in a [NonAction] and call that method from both the Index action and in the CreateUser action, but I have a feeling there must be a better way. Thanks.

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• How to do a range query

  - by Walter H

  I have a bunch of numbers timestamps that I want to check against a range to see if they match a particular range of dates. Basically like a BETWEEN .. AND .. match in SQL. The obvious data structure would be a B-tree, but while there are a number of B-tree implementations on CPAN, they only seem to implement exact matching. Berkeley DB has the same problem; there are B-tree indices, but no range matching. What would be the simplest way to do this? I don't want to use an SQL database unless I have to. Clarification: I have a lot of these, so I'm looking for an efficient method, not just grep over an array.

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• drupal bootstrap script: how to get list of all nodes of type x?

  - by groovehunter

  hi. I create a custom import and export, at the moment as an external script (via bootstrap), i plan to create a module in a more generic fashion lateron. I am building a frontend for nagios and for our host management and nagios configuration btw. Maybe it might become useful for other environments (networkmanagement) Now i need to know how to get list of all nodes of type x? I want to avoid direct SQL. A suggestion i got was to make an rss and parse it but i acess the drupal db a dozen times to extract various nodes, so it feels strange to do a web request for one thing So what i am looking for as newbie drupal dev is just a pointer to basic search module api for this task TIA florian

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• Can't create admin user on Heroku

  - by Nick5a1

  I am new to rails and I have gone through Kevin Skoglund's Ruby on Rails 3 Essential Training course on Lynda.com. Through the course you set up a simple cms, which I did. It doesn't cover Git or deployment but I've pushed my simple cms to github (https://github.com/nick5a1/Simple_CMS) and deployed to Heroku (http://nkarrasch.herokuapp.com/). In order to deploy to Heroku I followed the Heroku setup guide (https://devcenter.heroku.com/articles/rails3) and switched my database from MySQL to PostgreSQL. As instructed I changed gen'mysql2' to gen 'sqlite3' in my Gemfile and ran bundle install before pushing. I then ran heroku run rake db:migrate. I'm running into 2 problems. When I try to log in (http://nkarrasch.herokuapp.com/access) I get an error "We're sorry, but something went wrong". I should instead be getting a flash message with invalid username/password combination. This is what I'm getting on my test environment on my local machine. Secondly, when I log into the Heroku console to create and create an admin user, when I try to save that user I get the following error: irb(main):004:0> user.save (1.2ms) BEGIN AdminUser Exists (1.9ms) SELECT 1 AS one FROM "admin_users" WHERE "admin_users"."username" = 'Nick5a1' LIMIT 1 (1.7ms) ROLLBACK => false Any advice on how to troubleshoot would be greatly appreciated :). Thanks very much, Nick EDIT: Here are my Heroku logs: 2012-06-27T20:36:44+00:00 heroku[slugc]: Slug compilation started 2012-06-27T20:37:34+00:00 heroku[api]: Add shared-database:5mb add-on by [email protected] 2012-06-27T20:37:34+00:00 heroku[api]: Release v2 created by [email protected] 2012-06-27T20:37:34+00:00 heroku[api]: Add RAILS_ENV, LANG, PATH, RACK_ENV, GEM_PATH config by [email protected] 2012-06-27T20:37:34+00:00 heroku[api]: Release v3 created by [email protected] 2012-06-27T20:37:34+00:00 heroku[api]: Release v4 created by [email protected] 2012-06-27T20:37:34+00:00 heroku[api]: Deploy 1d82839 by [email protected] 2012-06-27T20:37:35+00:00 heroku[slugc]: Slug compilation finished 2012-06-27T20:37:36+00:00 heroku[web.1]: Starting process with command `bundle exec rails server -p 45450` 2012-06-27T20:37:40+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5) 2012-06-27T20:37:40+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5) 2012-06-27T20:37:40+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:5) 2012-06-27T20:37:44+00:00 app[web.1]: => Rails 3.2.6 application starting in production on http://0.0.0.0:45450 2012-06-27T20:37:44+00:00 app[web.1]: => Call with -d to detach 2012-06-27T20:37:44+00:00 app[web.1]: => Booting WEBrick 2012-06-27T20:37:44+00:00 app[web.1]: Connecting to database specified by DATABASE_URL 2012-06-27T20:37:44+00:00 app[web.1]: => Ctrl-C to shutdown server 2012-06-27T20:37:44+00:00 app[web.1]: [2012-06-27 20:37:44] INFO WEBrick 1.3.1 2012-06-27T20:37:44+00:00 app[web.1]: [2012-06-27 20:37:44] INFO ruby 1.9.2 (2011-07-09) [x86_64-linux] 2012-06-27T20:37:44+00:00 app[web.1]: [2012-06-27 20:37:44] INFO WEBrick::HTTPServer#start: pid=2 port=45450 2012-06-27T20:37:45+00:00 heroku[web.1]: State changed from starting to up 2012-06-27T20:39:44+00:00 heroku[run.1]: Awaiting client 2012-06-27T20:39:44+00:00 heroku[run.1]: Starting process with command `bundle exec rake db:migrate` 2012-06-27T20:39:44+00:00 heroku[run.1]: State changed from starting to up 2012-06-27T20:39:51+00:00 heroku[run.1]: Process exited with status 0 2012-06-27T20:39:51+00:00 heroku[run.1]: State changed from up to complete 2012-06-27T20:41:05+00:00 heroku[run.1]: Awaiting client 2012-06-27T20:41:05+00:00 heroku[run.1]: Starting process with command `bundle exec rails console` 2012-06-27T20:41:05+00:00 heroku[run.1]: State changed from starting to up 2012-06-27T20:46:09+00:00 heroku[run.1]: Process exited with status 0 2012-06-27T20:46:09+00:00 heroku[run.1]: State changed from up to complete

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• Loading tables dynamically with NHibernate

  - by Trevor Goertzen

  I'm working on a project that requires me to load tables based on table names stored in another table. More tables will be added to the DB (and by someone else), so creating NHibernate mapping files for each table isn't an option. Does anyone know if it is possible to load tables dynamically using NHibernate? Edit: I should add that I'm on .NET 2.0, so I can't use Fluent NHibernate. Thanks for the suggestion though guys. I will use that as evidence in convincing my associates to upgrade.

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• CheckBox and the ContextMenu

  - by anselmophil

  Hi guys! I have in a ListView with a ContextMenu, it has one CheckBox (the CheckBox has android:focusable="false") and one TextView per row, but you can hide the TextView in the preferences menu. After doing that, the CheckBox wasnt registering the ContextMenu, so of course, why not registerForContextMenu(cb) and unregisterForContextMenu(getListView())? Yes, i did that, but then, when when i call the delete command of onContextItemSelected, the app crashs. AdapterContextMenuInfo info=(AdapterContextMenuInfo)item.getMenuInfo(); db.deletarTarefa(info.id); So here i am, accepting ideias and help! :) Thanks

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• PDO::ATTR_EMULATE_PREPARES => false

  - by user264058

  I'm new to php and PDO ,so i read this response to a similar post- Does PDO really not use prepared statements with mysql? Yes, by default (at least with version I tested) but native mode can be turned on manually. If not, can it be forced to do so By employing PDO::ATTR_EMULATE_PREPARES setting, the name is pretty self-explanatory. $dbh-setAttribute( PDO::ATTR_EMULATE_PREPARES, false ); should you do that? That's hardest question of them all. Well, I'd say - yes, you should. If you choose PDO as your db driver, there is no point in using it in the emulation mode. by YOUR COMMON SENSE Aren't prepared statements secure from SQL injection, why change if from 'true'-false?? what is native mode??

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• What to know - for building a form with PHP and MySQL

  - by Tal Galili

  Hello all, I have three weeks to perform the following basic task. I wish to create an online form in PHP that will get 5 numbers and with them: save the numbers to a MySQL DB do a simple computation on the numbers and return them as an output to the visitor I already have a domain, hosting and a MySQL database+user. I don't know PHP, or SQL or databases. I do have prior knowledge in C and R (which means I have some of the basics of programming, and I am not intimidated of a new languages). My question are: Am I missing something? is there some other skill I should have for this task that I don't know of? What is a good way to learn the skills needed for the task I described? Hope the question isn't too basic/general. Thanks!

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• can I auto update my uitextview from the value of the row of my uipickerview without pressing any se

  - by Wesley

  So I have a uipicker view, that I have managed to load some data from my db into. I would like to update a textview, which is right above the pickerview, with each changing of the row. Is that possible? If I don't have to, I would like to avoid pushing a button in order to show the respective text. Can I make it so that the value in the text field changes with the value of the rowselected in the pickerview, in real time? Any thoughts or code snippets would be appreciated. Thanks!

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• How to check if a form is submited via javascript?

  - by SteD

  I have this conventional submit button which submit a form like this: <form method="post" id="form_submit"> ... <input class="button" type="submit" name="Submit" value="Submit"> </form> And I check if the submit button is clicked using this: if(isset($_POST['Submit'])){ //update DB } Now I have a submit link using jquery: <a href="#" onclick="publish(); return false;">Submit</a> JS code: $("#form_submit").submit(); What is the alternative way here to be used here for if(isset($_POST['Submit'])) since I'm submitting the form using javascript?

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• How to decouple an app's agile development from a database using BDUF?

  - by Rob Wells

  G'day, I was reading the article "Database as a Fortress" by Dan Chak from the excellent book "97 Things Every Software Architect Should Know" (sanitised Amazon link) which suggests that databases should not be designed using an agile approach. There's an SO question on agile approaches and databases "Agile development and database changes" which has some excellent answers covering agile development approaches. In fact, one of the answers supplies a brilliant idea of what's needed for each update of the DB. ;-) But after reading Dan Chak's article, I am left wondering if an agile approach is really suitable for large scale systems. This of course leads on to the question of how best to decouple an agile approach for the application that is interacting with the BDUF database design without adding complicated translation layers in the final design employed? Any suggestions? cheers,

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• how to run foreach loop with ternary condition

  - by I Like PHP

  i have two foreach loop to display some data, but i want to use a single foreach on basis of database result. means if there is any row returns from database then forach($first as $fk=>$fv) should execute otherwise foreach($other as $ok) should execute. i m unsing below ternary operator which gives parse error $n=$db->numRows($taskData); // databsse results <?php ($n) ? foreach ($first as $fk=>$fv) : foreach ($other as $ok) { ?> <table><tr><td>......some data...</td></tr></table> <?php } ?> please suggest me how to handle such condition via ternary operator or any other idea. Thanks

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• Display a MYSQL field using CAKE

  - by adam

  Forgive me if this is a "homework" question. We have a "Rating" table in our mysql db. I want to display this number on our user profile page. JUST BELOW THE GRAVATAR. here is the code in app/views/user/view.ctp <div class="nhplft"> flash(); ? ?d=identicon&s=100" border="0" alt="My Avatar! UID:" / Change Image link("Home",'/items'); ?  |  link('Add',array('controller' = 'items','action'='add')); ?  |  link('Search',array('controller'='items','action'='index')); ?  |  link("Logout",'/users/logout'); } ?

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• Redirects in RoR: Which one to use?

  - by scrr

  Hello, we are making a website that takes a generated incoming link and forwards the user who is clicking on it to another website while saving a record of the action in our DB. I guess it's basically what ad-services like AdSense do. However, what is the best way to redirect the user? I think html-meta-tag-redirects are out of question. So what other options are there? head :moved_permanently, :location => "http://www.domain.com/" This one is a 301-redirect. The next one is a 302: redirect_to "http://www.domain.com" Are there any others? And which is best to use for our case? The links are highly-dynamic and change all the time. We want to make sure we don't violate any existing standards and of course we don't want search-engines to tag us as spammers (which we are not, btw). Thanks!

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• mysql and .net: when using tableadapters I’m getting MySqlException “insert command denied for user”

  - by Deveti Putnik

  Hi! I am using mysql as db for my asp.net application. Here are the facts: I am using connection string from web.config which has both username and password. I can do SELECT with tableadapter. When I am trying to do INSERT with tableadapter, I am getting "mysqlexception insert command denied for user" error When I try to do INSERT programatically, i.e. using connection, command object, etc. everything is fine. In this case, I'm reading connection string from web.config, too. This can be only applied to GoDaddy hosting, but on local machine I don't have this kind of problems. Can anyone suggest what can I do to make it work on GoDaddy hosting? Regards, D

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• Passing arguments and values form HTML to jQuery (events)

  - by Jaroslav Moravec

  What is the practice to pass arguments from HTML to jQuery events function. For example getting id of row from db: <tr class="jq_killMe" id="thisItemId-id"> ... </tr> and jQuery: $(".jq_killMe").click(function () { var tmp = $(this).attr('id).split("-"); var id = tmp[0] // ... } What's the best practise, if I want to pass more than one argument? Is it better not to use jQuery? For example: <tr onclick="killMe('id')"> ... </tr> I didn't find the answer on my question, I will be glad even for links. Thanks.

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• Syntax error converting the nvarchar value to a column of data type int.

  - by Phil

  I have 1,2,3,4,5,6,7,8,9 stored as nvarchar inside Level in my db. I then have a dropdownlist with values 1,2,3,4,5,6,7,8,9. When a user makes a selection (i.e 1) (Level.SelectedValue.ToString). This builds an sql query via a param like this: "Select things From MBA_EOI Where level = 1" When I run the select I get the following error: Syntax error converting the nvarchar value '1,2,3,4,5,6,7,8,9' to a column of data type int. I was under the impression that I was dealing with an Nvarchar field and the selected value as string, where does the int conversion come in? p.s I have also tried Level.SelectedItem.ToString

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• Posting comment with ajax and jquery

  - by Steve

  I want to display the posted comment once the user comments. Just to add it under all of them as facebook does. I have this: // Interceptamos el evento submit $('#CommentAddForm').submit(function() { alert("entro"); alert($(this).attr('action')); // Enviamos el formulario usando AJAX $.ajax({ type: 'POST', url: $(this).attr('action'), data: $(this).serialize(), // Mostramos un mensaje con la respuesta de PHP success: function(data) { $('#result').html(//????????????); } }); return false; }); But i don't know very well how it works and i dont know what should i write in the line $('#result').html(//????????????); The variable URL contains the route which inserts the comment in the DB. And it works well. Any idea? Thanks. By the way, i have been reading this answer: Ajax/jQuery Comment System But i still don't get it.

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• What VS Projecttype for Model and Database?

  - by Tim

  Hello folks, i've just started a new asp.net project which could increase fastly(a small erp-system for our company). So i thought it would be a good idea to split at least the model from the view/controller(the asp.net project). Because it could be that i need to access some classes and the database from a windows app in future, i dicided to put the Model into its own Project. What Visual Studio 2005 Professional Projecttype is most suitable for this requirement and why? SqlServerProject (DB is MS Sql Server 2005 EP) Class Library Web Service Application Database project no separate Project/other(keep in mind VS 2005 has no ASP.NET MVC-Project) Thanks

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• How can I limit the number of connections to an mssql server from my tomcat deployed java applicatio

  - by CJ

  Hi, I have an application that is deployed on tomcat on server A and sends queries to a huge variety of mssql databases on an server B. I am concerned that my application could overload this mssql database server and would like some way to preventing it making requests to connect to any database on that server if some arbitrary number of connections were already in existence and unclosed. I am looking at using connection pooling but am under the impression that this will only pool connections to a specific database on the mssql server, I want to control the total of these combined connections that will occur to many different databases (incidentally I can only find out the names of individual db's dynamically as they change day to day). Will connection pooling take care of this for me, are am I looking at this from the wrong perspective? I have no access to the configuration of the mssql server. Links to tutorials or working examples of your suggested solution are most welcome! Thanks, Caroline

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• Is Django's manage.py syncdb or South used to create the test database?

  - by Thierry Lam

  With Django 1.1.1 and South 0.62, running a test from the CLI usually have the following output: Creating table some_model Installing index for my_app.SomeModel model . ----- Ran 1 test in 1s OK After upgrading to South 0.7, the output is invoking South's migration: Creating table some_model Installing index for my_app.SomeModel model Migrating... Running migrations for my_app: - Migrating forwards to 0001_initial > my_app:0001_initial - Loading initial data for my_app Migrated: - my_app . ----- Ran 1 test in 1s OK To create the test DB, has the test always used South migration in the past(before South 0.7) even if the output is not explicitly being shown?

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• Are there cross-platform tools to write XSS attacks directly to the database?

  - by Joachim Sauer

  I've recently found this blog entry on a tool that writes XSS attacks directly to the database. It looks like a terribly good way to scan an application for weaknesses in my applications. I've tried to run it on Mono, since my development platform is Linux. Unfortunately it crashes with a System.ArgumentNullException deep inside Microsoft.Practices.EnterpriseLibrary and I seem to be unable to find sufficient information about the software (it seems to be a single-shot project, with no homepage and no further development). Is anyone aware of a similar tool? Preferably it should be: cross-platform (Java, Python, .NET/Mono, even cross-platform C is ok) open source (I really like being able to audit my security tools) able to talk to a wide range of DB products (the big ones are most important: MySQL, Oracle, SQL Server, ...)

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• Recommendations for supporting both Oracle and SQL Server in the same ASP.NET app with NHibernate

  - by Hugo Zapata

  Our client wants to support both SQL Server and Oracle in the next project. Our experience comes from .NET/SQL Server platform. We will hire an Oracle developer, but our concern is with the DataAccess code. Will NHibernate make the DB Engine transparent for us? I don't think so, but i would like to hear from developers who have faced similar situations. I know this question is a little vague, because i don't have Oracle experience, so i don't know what issues we will find.

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• Joomla Development - Allow Direct File Access AND use Joomla-intern Framework

  - by Email

  Hi As usual you write in Joomla Development defined('_JEXEC') or die('Restricted access'); I make a plugin which needs access from Paypal/IPN, so i exclude that in that specific file. BUT I also need to use the Joomla-intern Variables to access the Database, so i tried this: require("../filewithaccesstoframework.php"); OR even $baseurl = $_SERVER['HTTP_HOST']; $baseurl ="http://".$baseurl."/configuration.php"; require($baseurl); By using the first code it displays "Restircted Access" since it seems to take this from the included file which i can't skip to put-in-there. The second code does not seem to recognize the Variables used in configuration.php like $host, $db, $password. the file configuration.php is chmod 444 Why this happens and is there a workarround to allow direct access to a file AND using the Joomla intern Framework (Variables, Functions)?

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