Here’s a site that lists the uptime of VPS providers. From my experience, Knownhost is solid (although pricier) for a VPS and they currently have a 99.983% uptime listed. They are a managed VPS provider, but they also added an unmanaged option via RocketVPS. Uptime is one of the major factors when picking a VPS — along with RAM, bandwidth, and CPU priority.
http://www.hyperspin.com/en/ranking.php?type=2&i=10&d=90&s=10
Installing Phusion Passenger 4 with SELINUX enabled is quite a challenge, especially with the lack of documentation out there with the latest version of Passenger.
Follow the following guide: http://www.seifeet.com/2012/09/ruby-apache-on-centos-63.html. This will get you 90% of the way there.
There are a few changes that I needed to make to get it working properly with my app.
PassengerTempDir /var/run/rubygem-passenger
The reason behind this is due to the SELINUX permissions on the parent /tmp folder will not work properly. If you don’t have the PassengerTempDir set in Apache, you will get an error of a temp folder not being set when running “grep httpd /var/log/audit/audit.log | audit2allow -M passenger“
Here’s the permissions I have for the rubygem-passenger folder:
rvm rvm system_u:object_r:httpd_var_run_t:s0 rubygem-passenger
If you are using compiled CSS libraries such as Compass, you will need to set the proper SELINUX permissions for the compiled assets folder. Otherwise, any changes to the compiled css files will cause a fatal error in your application (read failure in the tmp folder).
chcon -R -t httpd_sys_rw_content_t tmp
Sample Passenger configuration file for Apache (/etc/httpd/conf.d/passenger.conf)
LoadModule passenger_module /usr/local/rvm/gems/ruby-2.0.0-p0/gems/passenger-4.0.0.rc4/libout/apache2/mod_passenger.so
PassengerRoot /usr/local/rvm/gems/ruby-2.0.0-p0/gems/passenger-4.0.0.rc4 PassengerRuby /usr/local/rvm/wrappers/ruby-2.0.0-p0/ruby PassengerDefaultUser rvm PassengerDefaultGroup rvm PassengerLogLevel 2 PassengerDebugLogFile /var/log/httpd/passenger.log PassengerPreStart [YOUR SITE URL] PassengerMaxPoolSize 2 PassengerPoolIdleTime 300 PassengerTempDir /var/run/rubygem-passenger
Error: Cannot stat ‘/var/run/rubygem-passenger/passenger.1.0.19162’: Permission denied
Fix: This is due to SELINUX blocking access to the folder. Run the “grep httpd /var/log/audit/audit.log | audit2allow -M passenger” after changing setenforce to 0, restarting httpd, and adding the policy via semanage -i passenger.pp.
Error: Cannot change the directory ‘/tmp/passenger.1.0.—/generation-0/buffered_uploads’ its UID to 48 and GID to 48
Fix: This is a regular user permission issue (User/Group needs to have write permissions) and is also related to not using /var/run/rubygem-passenger
Error: Errno::EACCES Permission Denied
Fix: Your /[myrailsapp]/tmp folder permissions is incorrect. Compiled CSS libraries use the /[myrailsapp]/tmp folder to save all the data This could be either the user/group permissions or the SELINUX. The fastest way to check to see if its a SELINUX issue is setting setenforce to 0 and restarting httpd. If the app works, then you will need to set the /[myrailsapp]/tmp folder permissions. If not, check to see that the folder has global read/write permissions.
If you want to generate a dropdown selector menu from a JSON using Ruby on Rails, you can do it with two lines of code (three including the JSON string).
In your controller, use the JSON parse method to convert the string into a hash.
myjsonstring = '{"1":"Test1","2":"Test2","3":"Test3"}'
@myvar = JSON.parse(myjsonstring)
In your view,
<%= f.collection_select myfieldname, @myjsonstring, :mykey, :myvalue %>
The end result will look like the following with options values set to 1, 2, and 3.
If you want to consolidate a single parameter into the URL path, it is possible via Zend Rewrite.
For instance, you currently have mysite.com/users/edit/userid/1234 and would like to use mysite.com/users/edit/1234.
To do this, edit the bootstrap.php file and include the following code:
protected function _initRoutes()
{
$router = Zend_Controller_Front::getInstance()->getRouter();
$route = new Zend_Controller_Router_Route('users/edit/:userid',array('controller' =>; 'users','action' => 'edit'));
$router->addRoute('usersedit',$route);
return $router;
}
In your users controller – editAction() method, you will now be able to access the $userid variable with the shorter URL (mysite.com/users/edit/1234)
(Very basic example)
$request = $this->getRequest(); $userid = $request->userid;
Here’s the fastest way to add a checkbox element with a label to the side of it (inline) using the Zend Framework. By default, the checkbox is put on a separate line after the label,which isn’t a standard practice. This can be done using some CSS and a Zend Decorator element.
CSS Code:
label.inline {
display: inline;
}
.inlinecheck{
clear: both;
float: left;
width: 25px;
margin-bottom: 0;
}
Zend PHP Code:
$this->addElement('checkbox', 'mycheckbox', array(
'label' => 'My Label',
'name' => 'mycheckbox',
));
$this->getElement('mycheckbox')->addDecorator('Label', array('placement' => 'APPEND'));
$this->getElement('mycheckbox')->addDecorator('HtmlTag', array('tag' => 'dl','class' => 'inlinecheck'));
Rename mycheckbox with the name of your element and set the label accordingly.
