I had been using SQLLite with Django for quite some time because I couldn't get mysqlclient for windows to install properly with pip. SQLLite was fine for local development, but before I deploy an app I wanted to get MySQL working.

It turns out it was very easy:

pip install mysqlclient==1.3.9

That's all I need to do! I had tried downloading wheels and all sorts of other stuff, none of which worked, but version 1.3.9 installs fine with no errors on Windows 10.

Labels: coding, python, django
No comments

If you get an error trying to connect with php_imap for Kerberos:

PHP Notice:  Unknown: Kerberos error: No credentials cache found (try running kinit) for imap.example.com (errflg=1) in Unknown on line 0

This is the solution:

Pass ['DISABLE_AUTHENTICATOR' => 'GSSAPI'] to imap_open for the last options parameter.

Labels: coding, php2
No comments

After spending yesterday figuring out how to write custom log files, today I changed my mind and went a different route. The problem with these log files is that they would need to be parsed to generate the reports I would need to generate. While this could easily and efficiently be done with something like Python, in order to stick with using PHP I decided to take a completely different approach.

I created a statistics table where I can just increment the appropriate column rather than writing a whole line to a text file. My concern with this was that it would down the site substantially, so rather than recording the data while the user is performing the searches I created a Job and queue it to be processed later. This doesn't help with the server load, but it does remove the response time for the user as a factor.

Labels: coding, laravel
No comments

Laravel comes with Monolog which it uses to log application exceptions and such. The need arose recently to log other information to text files, specifically searches performed by users. I tried logging this to the database but the table grew very quickly and performance suffered as a result. 

So I decided to log to text files, which I can then process when reporting is needed. It would be relatively easy to use PHP file operations to open and append to a text file, but I decided to try to stick to using Monolog. Most of the information I was able to find online about how to do this involved overwriting Laravel's Logging Configuration classes to allow different types of data to be written to different log files, but it seemed like an awful lot of code to do something that should be relatively simple. After more searching I found a method that uses 4 lines of code and works perfectly:

$logPath = [path to log file]
$orderLog = new Logger('searches');
$orderLog->pushHandler(new StreamHandler($logPath), Logger::INFO);
$orderLog->info('Search : ', $data);

By including the date in the $logPath as part of the file name I can automatically rotate the logs and write to whatever location I choose to. The $data variable needs to be an array and is encoded to JSON and written to the log. The parameter passed into the new Logger() is the channel written to the log. 

The only thing I have not yet been able to customize is the Priority - in this case "Info." For my purposes this isn't really necessary and could be ommitted, but having it doesn't have any downsides so I don't know if it's worth the trouble of figuring out how to remove it. 

Labels: coding, laravel
No comments

Over the last few weeks I have become enamored of using traits in PHP. Whereas I previously would put functions that need to be reused into either my Models or into helper functions, I have now started to make traits with these functions in them. For my Laravel application I created a directory app/Http/Traits where I keep my traits.

I started doing this when I began to optimize my code, trying to remove redundant code and remove unneccesary weight from my models. Using PHPStorm's very useful ability to find duplicated code I searched for blocks of 10 lines or more that were reused and moved those into traits. As I continued to do this I started to realize other benefits of using traits - mainly that it provides a way to simplify things. If the same action is taken in different controller or different parts of the application by using a Trait if I decide to change it I only have to change the code in one place rather than tracking down every place in the code that needs to be changed.

Labels: coding, laravel, php2
No comments