edlington hq

Update primary key in Propel

Sat, 06 Mar 2010 17:42:00 +0100

Have you ever tried to change an object’s primary key in Propel? Well…it’s not as simple like call setters and save(). The problem is that you’re changing the primary key in the object and then you’re asking the object to build the UPDATE SQL. I’m not sure what the correct approach is to this issue, but Propel is clearly not paritularly adept at updating primary keys.

So, the solution is to use the BasePeer::doUpdate() method.

 
$con = Propel::getConnection(ProductPeer::DATABASE_NAME);

$product = ProductPeer::retrieveByPK(10, 'en'); 

$selectCriteria = $product->buildPkeyCriteria(); 

// update values are also stored in Criteria object

$product->setId(12); 

$product->setLang('en'); 

$product->setParam('a'); 

$updateValues = $product->buildCriteria();
 
BasePeer::doUpdate($selectCriteria, $updateValues, $con);

Bring down IE6!

Tue, 02 Feb 2010 09:35:59 +0100

Bring down IE6!

Prado criteria addOr() behaving strangely. Is this really unpredictable?

Sat, 30 Jan 2010 19:56:00 +0100

No, it’s not.

But maybe you won’t find the solution for hours if I explain the details… :)

In some situations (Propel 1.4), Criteria::addOr() translates to SQL as an AND. The usual example of using:

 
$c = new Criteria(); 
$c->add(BookPeer::TITLE, '%developer%', Criteria::LIKE); 
$c->addOr(BookPeer::TITLE, '%Web%', Criteria::LIKE);

It translates in SQL as

 
WHERE (book.TITLE LIKE '%developer%' OR book.TITLE LIKE '%Web%')

But addOr() fails on a column with no existing condition, for example:

 
$c = new Criteria();
$c->add(BookPeer::TITLE, '%developer%', Criteria::LIKE);
$c->addOr(BookPeer::CATEGORY, 'IT', Criteria::EQUAL);

It translates in SQL as

 
WHERE book.TITLE LIKE '%developer%' AND book.CATEGORY = 'IT'

This bug will be fixed in Propel 1.5.
Until then, you must use the supported API (i.e. getNewCriterion()) to achieve the desired effect here:

 
$c = new Criteria();
$c1 = $c->getNewCriterion(BookPeer::TITLE, '%developer%', Criteria::LIKE);
$c2 = $c->getNewCriterion(BookPeer::CATEGORY, 'IT', Criteria::EQUAL);
$c1->addOr($c2);
$c->add($c1);

Prado PHP framework is still alive

Sat, 23 Jan 2010 20:59:00 +0100

During a recent project, I started to deal with the Prado framework. Prado borrowed many ideas from Microsoft ASP.NET. This framework has in mind since June 2004, but from version 3.0, significant efforts are allocated to ensure the quality and stability of Prado. After trying most of available frameworks (Symfony, CakePHP, Zend), I felt that something else would be needed, something like ASP.NET. The key strength is its large number of components.

As for me, Prado is the most comfortable PHP framework that I’ve ever tried. This is not because it’s long been developing in ASP.NET and now I started to get to know someone else. On the contrary, I develop in PHP for 7 years, but a few years ago I began to fond of component based frameworks, and where web development is concerned, the event driven programming is more logical to me than strict MVC. It takes time to understand, but once you understand it, this will help in rapid development. The only annoying thing is that there is no IDE support for Prado templating (except something for Dreamweaver MX, but I’d rather relegate it). Well, you can expect a few blog posts about Prado tricks… :)

Contrary to popular belief, Prado is still under development. PRADO 4 is going to be a major rewrite of almost the whole framework (mostly backwards compatible to PRADO 3). The whole PRADO 4 core has been rewritten from scratch. Details:

new template parser which is based upon the DOM extension of PHP. First benchmarks:
- 749.87 requests per second (1.334ms per request) with several components in page and layout
- Without layout: 856.37rps (1.168ms).
- Yii’s “Hello World” demo results in 733.42 requests per second (about 1.363ms). A comparable PRADO “Hello World” test without template engine which results in 1600.41 requests per second (0.625ms).
new ActiveRecord implementation which has been backported from Yii, but is likely to undergo a major rewrite as well
dictionary based autoloading
pluggable JavaScript frameworks, so the developer can decide whether he wants to work with Prototype, jQuery, ExtJs or others. New JavaScript frameworks can be added later through a simple plugin mechanism.
ExtControls which provide PHP based ExtControls with fully automatic JavaScript code generation, optimization and caching.

CSS Transform Exporter for Blender

Mon, 21 Dec 2009 13:59:44 +0100

CSS Transform Exporter for Blender:

„As the title implies, the exporter script runs in Blender. Simply construct a 2D scene using planes, add in an animation track, run the script and click Export. It’s as simple as that!”

wonderful idea.

koming soon…

Sun, 20 Dec 2009 12:41:56 +0100

koming soon…

cube

Sat, 21 Nov 2009 17:47:00 +0100

lev: na ez az a srác
lev: ja és progmatos
blint: lol
blint: sejtettem
blint: nem is
blint: aszittem mérnökinfós
lev: :)
lev: khm....az én vagyok
lev: :)
blint: de rajtad legalább nem látszik
…
lev: na
lev: már fordul is a kernel!!!
blint: :D:D:D
blint: „de rajtad legalább nem látszik” - csak meg ne szólalj

Resolving: "A network-related or instance-specific error occurred while establishing a connection to SQL Server" error

Sun, 15 Nov 2009 20:53:00 +0100

Our recent ASP.NET project has began to grow bigger and bigger, so yesterday I decided to grab all business logic from the project, separate to components and put them into class libraries. Mostly I used some automated copying process, but in ‘ClientManagerClassLibrary’ I had to recreate my ‘ClientProfile’ LINQ to SQL class using the built-in wizard in Visual Studio 2008 SP1 (…sure you know the process: Add new item -> LINQ to SQL class -> dropping the table and stored procedures into designer -> Save). After separating, the project still worked fine on my developer machine, not like on my server. I got this error:

SQL Server 2005 Error: “A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 – Error Locating Server/Instance Specified) ”

I could not imagine what the hell is wrong with SQL Server. My connection string and SQL configuration the same on both machine and I didn’t modify that. So what else?
The solution have found in LINQ codebehinds.

Here’s the file structure of my class library:

Well, let’s take a look at the DataContext method inheritance in ClientProfile.designer.cs codebehind:

ClientProfile.designer.cs:

public ClientProfileDataContext() :
	base(global::ClientManagerClassLibrary.Properties.Settings.Default.gattohu_gatto_lightConnectionString, mappingSource)
 { 
	 OnCreated(); 
 }

Settings.Designer.cs:

[global::System.Configuration.ApplicationScopedSettingAttribute()]
[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
[global::System.Configuration.SpecialSettingAttribute(global::System.Configuration.SpecialSetting.ConnectionString)]
[global::System.Configuration.DefaultSettingValueAttribute("Data Source=LEV-DEV\\SQLEXPRESS;Initial Catalog=gattohu_gatto_light;Integrated"+" Security=True")]
public string gattohu_gatto_lightConnectionString
{
	get
	{
		return ((string)(this["gattohu_gatto_lightConnectionString"]));
	}
}

As may you suppose, the only place we’ll define the connection string is the web.config file, so comment this whole stuff out (or delete it)!

web.config:

Returning to designer.cs, modify that to get the connection string from the web.config file:

ClientProfile.designer.cs:

public ClientProfileDataContext() :
	base(global::System.Configuration.ConfigurationManager.ConnectionStrings["LocalSqlServer"].ConnectionString, mappingSource)
{
	OnCreated();
}

If Visual Studio complaining about ConfigurationManager, you need to add reference to the System.Configuration .NET assembly.

7 more things to check if the error still present:

1. Make sure your database engine is configured to accept remote connections

Start > All Programs > SQL Server 2005 > Configuration Tools > SQL Server Surface Area Configuration
Click on Surface Area Configuration for Services and Connections
Select the instance that is having a problem > Database Engine > Remote Connections
Enable local and remote connections
Restart instance

2. Check the SQL Server service account

If you are not using a domain account as a service account (for example if you are using NETWORK SERVICE), you may want to switch this first before proceeding

3. If you are using a named SQL Server instance, make sure you are using that instance name in your connection strings in your ASweb P.NET application

Usually the format needed to specify the database server is machinename\instancename
Check your connection string as well:

4.You may need to create an exception on the firewall for the SQL Server instance and port you are using

Start > Run > Firewall.cpl
Click on exceptions tab
Add the sqlservr.exe (typically located in C:\Program Files (x86)\Microsoft SQL Server\MSSQL.x\MSSQL\Binn), and port (default is 1433)
Check your connection string as well

5. If you are using a named SQL Server instance, make sure you are using that instance name in your connection strings

6. Check SQLBrowser; check that it is running. You may also need to create an exception in your firewall for SQLBrowser.

7. Check that you have connectivity to the SQL Server. Note what you are using to connect: machine name, domain name or IP address? Use this when checking connectivity. For example if you are using myserver

Start > Run > cmd
netstat -ano| findstr 1433
telnet myserver 1433
ping -a myserver Check what ports are IP addresses are being returned.

Create extended, customizable ListView DataPager

Tue, 03 Nov 2009 16:04:00 +0100


	
		... /template here/ ...

You’ll get something like this:

new blog design is done

Sun, 01 Nov 2009 18:33:58 +0100

ready to code yeah.

Login failed for user ‘IIS APPPOOL\DefaultAppPool’ on Windows 7

Sat, 31 Oct 2009 13:16:00 +0100

Last night I wanted to share our currently developed CMS (ASP.NET 2.0 project), so I copied the working application from my developer machine to a home server running on Windows 7, IIS 6.1. After I configured the connection string, I got the following error:

Login failed for user 'IIS APPPOOL\DefaultAppPool'.

It’s not a simple “Login failed” message, adding rights to the database didn’t solve the problem. The solution was changing the Application Pool of the website deep inside the IIS Manager:

In IIS, choose the website that tries to connect to the database, and click on “Advanced Settings”.

Take a look at the Application Pool used, in this case DefaultAppPool.
Now go to the Application Pools in IIS root, right click the DefaultApplicationPool and choose Advanced Settings. Find the Identity field and choose LocalService as the Built-in account.

Now try again with your website.

the hq, part one

Fri, 30 Oct 2009 15:32:00 +0100

the hq, part one

start!

Fri, 30 Oct 2009 15:15:50 +0100