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• RoR function help

  - by Aviatrix

  Can someone write a function for me on RoR , i simply don't have the time to study Ruby and RoR for just one time use. The function should do the following things : 1) have an array with variables 2) for each variable in the array execute 4-5 other functions get the results and insert them in another table in the same DB table name - refined CityName varchar Subdomain varchar = the varriable in the array Nearby text State varchar ZipCodes text AreaCodes text Some of the functions return arrays. i will really apreciate the help ! Thanks in advance.

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• MS Access (2010) Enable Design View

  - by Tim GONELLA

  I downloaded the Access template below for doing a home inventory: http://office.microsoft.com/en-us/templates/results.aspx?qu=home%20inventory&ex=1&queryid=0d245f2a%2Dacdc%2D4161%2D92c8%2D8ba16a52ab32&AxInstalled=1&c=0#ai:TC101918100| The design view is not visible, which is a bit of a nuisance. Things I've tried: 1) In options/options/current database/ the check boxes (enable layout view & enable design changes for tables in Datasheet view) are both greyed out. 2) I've unblocked the file using Right-Click-Properties. 3) I've tried copying/exporting the objects to another database. But can only copy/export the tables. 4) I've tried holding shift when opening the DB. 5) Enabling all trust permissions etc. None of these work Does anybody have any suggestions. (I'm using Office 2010) Thanks

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• Dynamic Database connection

  - by gsieranski

  I have multiple client databases that I need to hit on the fly and I am having trouble getting the code I have to work. At first I was just storing a connection string in a clinet object in the db, pulling it out based on logged-in user, and passing it to linq data context constructor. This works fine in my development enviorment but is failing on the Winhost server I am using. It is running SQL 2008. I am getting a "The current configuration system does not support user scoped settings." error. Any help or guidance on this issue is greatly appreciated. Greg

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• Storing uploaded content on a website

  - by Matt

  For the past 5 years, my typical solution for storing uploaded files (images, videos, documents, etc) was to throw everything into an "upload" folder and give it a unique name. I'm looking to refine my methods for storing uploaded content and I'm just wondering what other methods are used / preferred. I've considered storing each item in their own folder (folder name is the Id in the db) so I can preserve the uploaded file name. I've also considered uploading all media to a locked folder, then using a file handler, which you pass the Id of the file you want to download in the querystring, it would then read the file and send the bytes to the user. This is handy for checking access, and restricting bandwidth for users.

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• Load Balancing and Failover for Read-Only PostgreSQL Database

  - by Eric J.

  Scenario Multiple application servers host web services written in Java, running in SpringSource dm Server. To implement a new requirement, they will need to query a read-only PostgreSQL database. Issue To support redundancy, at least two PostgreSQL instances will be running. Access to PostgreSQL must be load balanced and must auto-fail over to currently running instances if an instance should go down. Auto-discovery of newly running instances is desirable but not required. Research I have reviewed the official PostgreSQL documentation on this issue. However, that focuses on the more general case of read/write access to the database. Top google results tend to lead to older newsgroup messages or dead projects such as Sequoia or DB Balancer, as well as one active project PG Pool II Question What are your real-world experiences with PG Pool II? What other simple and reliable alternatives are available?

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• Update tableview instantly as data pushed in core data iphone

  - by user336685

  I need to update the tableview as soon as the content is pushed in core data database. for this AppDelegate.m contains following code NSManagedObjectContext *moc = [self managedObjectContext]; NSFetchRequest *request = [[NSFetchRequest alloc] init]; [request setEntity:[NSEntityDescription entityForName:@"FeedItem" inManagedObjectContext:moc]]; //for loop // push data in code data & then save context [moc save:&error]; ZAssert(error == nil, @"Error saving context: %@", [error localizedDescription]); //for loop ends This code triggers following code from RootviewController.m - (void)controllerWillChangeContent:(NSFetchedResultsController*)controller { [[self tableView] beginUpdates]; } But this updates the tableview only at the end of the for loop ,the table does not get updated after immediate push in db. I tried following code but that didn't work - (void)controllerDidChangeContent:(NSFetchedResultsController *)controller { // In the simplest, most efficient, case, reload the table view. [self.tableView reloadData]; } I have been stuck with this problem for several days.Please help.Thanks in advance for solution.

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• Useful ways for multilanguage navigation and static content on your site?

  - by vitto

  Hi, I have a big site running under Apache and PHP and in few mounths I should consider to add some different language version of it, but I'm not sure about the right way (or ways). My problem it isn't the user data, because I can use db tables with different languages (en, de, it, etc.) so I want concentrate my answer on navigation and static content. For now I can't use gettext because I don't have a dedicated server and I can't reboot it every time I want, but surely will be a future choice. So my main problems are these: In the site, I have classical XHTML elements like the menus, lists, div and various static texts in various pages (should be perferct for gettext, but I need a alternative) The other part of the sites has XHTML elements which are dynamically created via AJAX and jQuery, and here I haven't any idea of what can I do... So does exists some example I can see in some link to solve it (or some useful tecnique)?

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• Asp.Net MVC best way to update cached table

  - by Eddy Mishiyev

  There are certain tables that get called often but updated rarely. One of these tables is Departments. So to save DB trips, I think it is ok to cache this table taking into consideration that the table has very small size. However, once you cached it an issue of keeping the table data fresh occurs. So what is the best way to determine that the table is dirty and therefore requires a reload and how that code should be invoked. I look for solution that will be scalable. So updating the cache right after inserting will not work. So if one machine inserted the record all other on network should get notified to reload the cache. I was thinking for calling corresponding web service from T-SQL but don't really like the idea of consuming recourses on sql server. So what are the best practices to resolve this type of problems. Thanks in advance Eddy

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• dynamic behavior of factory class

  - by manu1001

  I have a factory class that serves out a bunch of properties. Now, the properties might come either from a database or from a properties file. This is what I've come up with. public class Factory { private static final INSTANCE = new Factory(source); private Factory(DbSource source) { // read from db, save properties } private Factory(FileSource source) { // read from file, save properties } // getInstance() and getProperties() here } What's a clean way of switching between these behaviors based on the environment. I want to avoid having to recompile the class each time.

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• Adding to a multidimensional array in PHP

  - by b. e. hollenbeck

  I have an array being returned from the database that looks like so: $data = array(201 => array('description' => blah, 'hours' => 0), 222 => array('description' => feh, 'hours' => 0); In the next bit of code, I'm using a foreach and checking the for the key in another table. If the next query returns data, I want to update the 'hours' value in that key's array with a new hours value: foreach ($data as $row => $value){ $query = $db->query($sql); if ($result){ $value['hours'] = $result['hours']; } I've tried just about every combination of declarations for the foreach loop, but I keep getting the error that it's a non-object. Surely this is easier than my brain is perceiving it.

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• Best architecture for accessing secondary database

  - by fearofawhackplanet

  I'm currently developing an app which will use a Linq to SQL (or possibly EF) data access layer. We already have a database which holds all our Contacts information, but there is currently no API around this. I need to interact with this DB from the new app to retrieve contact details. I can think of two ways I could do this - 1) Develop a suite of web services against the contacts database 2) Write a Linq to SQL (or EF) DAL and API against the contacts database I will probably be developing several further apps in the future which will also need access to the Contacts data. Which would generally be the prefered method? What are the points I need to consider? Am I even asking a sensible question, or am I missing something obvious?

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• How to deal with routing when developing a custom CMS in Codeigniter

  - by Ashley Ward

  Hi All - I’m a recent user of Codeigniter and am developing a simple backend CMS to manage pages. Based on a URL (in this example I have hidden “index.php”) : mysite.com/pagename I would like the system to detect if there is a value of “pagename” in my database, if there is, I need the system to re-route to a custom controller (eg: Pagemaker) and if there is no record called pagename, just do it’s normal thing (i.e. find a controller called pagename) Currently I have: $route['(:any)'] = "pagemaker/create/$1"; whereby all requests are forwarded to my custom function. However I want to change this structure so that if the page does NOT exist in the db, the traditional codeigniter request process is followed. Can anyone offer any advice about how to complete this? Or any advice about routing custom CMS’s in codeigniter in general?

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• How can I pipe a large amount of data as a runtime argument?

  - by Zombies

  Running an executable JAR on a linux platform here. The program it self works on a somewhat large amount of data, basically a list of URLs... could be up to 2k. Currently I get this from a simple DB call. But I was thinking that instead of creating a new mode and writing SQL to get a new result set and having to redploy everytime, I could just make the program more robust by passing in the result set (the list of URLs) that need to be worked on... so, within a linux environment, is there a pain-free/simple way to get the result set and pass it in dynamically? I know file i/o is one, but it doesn't seem to be effecient because each file has to be named, as well more logic to handle grabbing the correct file, creating a file with a unique name, etc.

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• A column insert or update conflicts with a rule imposed by a previous CREATE RULE statement.

  - by Ronnie Chester Lynwood

  hello. im working on a online game. i got some problems with inserting new data to table. im getting 2010-4-8 2:14, *** 37000, 513, [Microsoft][ODBC SQL Server Driver][SQL Server]A column insert or update conflicts with a rule imposed by a previous CREATE RULE statement. The statement was terminated. The conflict occurred in database 'KN_online', table 'ACCOUNT_CHAR', column 'strAccountID'., 261 NationSelect*** this error in logs. what does this means? how can i fix this? i've tried to delete RULE for my DB but I'm unable to delete RULE. im getting the rule 'dbo.unallowedchars' cannot be dropped because it is bounded to one or more clumn. I set all permissions right but its still not working.. thanks..

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• Storing i18n data in a database using XML

  - by TigrouMeow

  Hello, I may have to store some i18n-ed data in my database using XML if I don't fight back. That's not my choice, but it's in the specifications I have to follow. We would have, by example, something like following in a 'Country' column: <lang='fr'>Etats-Unis</lang> <lang='en'>United States</lang> This would apply to many columns in the database. I don't think it's a good idea at all. I tend to think that a cell in a database should represent a single piece of data (better for look-up), and that the database should have two dimensions maximum and not 3 or more (one request more would be required per dimension / a dimension here would be equal to the number of XML attributes). My idea was to have a separate table for all the translations, with columns such as : ID / Language / Translation. However, I should admit that I'm really not sure what is the best way to store data in various languages in a DB... Thanks for your advices :)

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• PHP: Infinity loop and Time Limit!

  - by Jonathan

  Hi, I have a piece of code that fetches data by giving it an ID. If I give it an ID of 1230 for example, the code fetches an article data with an ID of 1230 from a web site (external) and insert it into a DB. Now, the problem is that I need to fetch all the articles, lets say from ID 00001 to 99999. If a do a 'for' loop, after 60 seconds the PHP internal time limit stops the loop. If a use some kind of header("Location: code.php?id=00001") or header("Location: code.php?id=".$ID) and increase $ID++ and then redirect to the same page the browser stops me because of the infinite loop or redirection problem. Please HELP!

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• Fastest method for SQL Server inserts, updates, selects

  - by Ian

  I use SPs and this isn't an SP vs code-behind "Build your SQL command" question. I'm looking for a high-throughput method for a backend app that handles many small transactions. I use SQLDataReader for most of the returns since forward only works in most cases for me. I've seen it done many ways, and used most of them myself. Methods that define and accept the stored procedure parameters as parameters themselves and build using cmd.Parameters.Add (with or without specifying the DB value type and/or length) Assembling your SP params and their values into an array or hashtable, then passing to a more abstract method that parses the collection and then runs cmd.Parameters.Add Classes that represent tables, initializing the class upon need, setting the public properties that represent the table fields, and calling methods like Save, Load, etc I'm sure there are others I've seen but can't think of at the moment as well. I'm open to all suggestions.

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• Cannot get mysql gem to work in Snow Leopard, unable to setup ruby on rails environment

  - by user325020

  I am having some serious problems, however this seems to be a common thing. I have Snow Leopard 10.6.3 and here are my other version info: MySQL mysql Ver 14.14 Distrib 5.1.46, for apple-darwin10.2.0 (i386) using readline 5.1 gem 1.3.6 ruby 1.8.7 (2009-06-08 patchlevel 173) [universal-darwin10.0] My problem is that no matter what I do to try and install the mysql gem, i still get the error every time i do rake db:migrate uninitialized constant MysqlCompat::MysqlRes I have installed the mysql gem based on instructions around the web that say to use export ARCHFLAGS="-arch i386 -arch x86_64" ; sudo gem install --no-rdoc --no-ri mysql -- -v 2.7 --with-mysql-dir=/usr/local --with-mysql-config=/usr/local/mysql/bin/mysql_config This DOES work, as it gives this output: Building native extensions. This could take a while... Successfully installed mysql-2.8.1 1 gem installed Any help would be greatly appreciated

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• How do I do a where clause in sql and return a count back?

  - by chobo2

  Hi I am using mssql and I want to make a query that returns a count back with a where clause. Like say I have a product Table ProductId ProductName Active So how would I make it I have like Select Count(*) From Product now I don't know how to filter it so it only could if Active = true; So if there are 3 active products then it would return a count of 3 even if there is a hundred rows in the db and the other 97 are only not active. so the where clause would be probably like where active = true I am not sure how to put them together though.

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• updating batches of data

  - by gaponte69

  I am using GridView in asp .net and editing data with edit command field property (as we know after updating the edited row, we automatically update the database), and I want to use transactions (with begin to commit statement - including rollback) to commit this update query in database, after clicking in some button (after some events for example), not automatically to insert or update the edited data from grid directly to the DB...so I want to save them somewhere temporary (even many edited rows - not just one row) and then to confirm the transaction - to update the real tables in database... Any suggestions are welcomed... I've used some good links, but very helpful, like: http://www.asp.net/learn/data-access/tutorial-63-cs.aspx http://www.asp.net/learn/data-access/tutorial-66-cs.aspx etc...

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• Hot deploy on Heroku with no downtime

  - by zetarun

  A bad side of pushing to Heroku is that I must push the code (and the server restarts automatically) before running my db migrations. This can obviously cause some 500 errors on users navigating the website having the new code without the new tables/attributes: the solution proposed by Heroku is to use the maintenance mode, but I want a way with no downside letting my webapp running everytime! Is there a way? For example with Capistrano: I prepare the code to deploy in a new dir I run (backward) migrations and the old code continue to work perfectly I swith mongrel instance to the new dir and restart the server ...and I have no downtime!

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• Perl Math::Business::EMA help

  - by Dustin

  Script pulls data from mysql: $DBI::result = $db->prepare(qq{ SELECT close FROM $table WHERE day <= '$DATE' ORDER BY day DESC LIMIT $EMA }); $DBI::result->execute(); while($row = $DBI::result->fetchrow) { print "$row\n"; }; with the following example results: 1.560 1.560 1.550... But I need to work out the EMA using Math::Business::EMA; and I'm not sure how to calculate this while maintaining the accuracy. EMA is weighted and My lack of Perl knowledge is not helping.

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• Linq like or other construction

  - by Yauhen Kavalenka

  I have DB oracle in my solution. I want to have some results in this query. Query example: select * from doctor where doctor.name like '%IVANOV_A%'; But if i do it at LINQ i cannot get any result. from p in repository.Doctor.Where(x => x.Name.ToLower().Containsname)) select p; Where 'name' is variable of string parameter. Web layout request next string: "Ivanov a" or "A Ivanov" But i suggest for user choose you pattetn for query. How i can to get "patient by name" if name consist of "First name" and "Last name" but user doesn't know your doctor's full name?

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• yiic shell: failed to perform 'crud'

  - by ufw

  Debian Squeeze, PHP 5.3.2-1, Yii 1.1.2, PHP $path to php is /usr/bin/php, permissions are '777'. When I try to run 'crud Test' in yii shell, I get the following error message: PHP Warning: include(/var/www/test/protected/models/Test.php): failed to open stream: No such file or directory in /var/www/yii/framework/YiiBase.php on line 335 PHP Warning: include(): Failed opening '/var/www/test/protected/models/Test.php' for inclusion (include_path='.:/var/www/test/protected/components:/var/www/test/protected/models:/usr/share/php:/usr/share/pear') in /var/www/yii/framework/YiiBase.php on line 335 PHP Fatal error: Class 'Test' not found in /var/www/yii/framework/db/ar/CActiveRecord.php on line 341

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• Java singleton VO class implementing serializable, having default values using getter methods

  - by user309281

  Hi All I have a J2SE application having user threads running in a separate JVM outside JBOSS server. During startup, J2SE invokes a EJB inside jboss, by passing a new object(singleton) of simple JAVA VO class having getter/setter methods. {The VO class is a singleton and implements serialiable(as mandated by EJB)}. EJB receives the object, reads all db configuration and uses the setter methods of new object to set all the values. It then returns back this updated object back to J2SE in the same remote call. After J2SE receives the object(singleton/serializable), if i invoke getter methods, I could see only default values set during object creation before EJB call, and not the values set by the EJB. Kindly throw some light on, why the received object from EJB does not see any updated values and how to rectify this. I believe it got to do with object initialization during deserialization. And i tried overriding readResolve() in the VO class, but of no help. With Regards, Krishna

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