Ubuntu server no login console

After boot there was no console prompt to login.

The issue was related to the VGA resolution.

To fix Ubuntu server no login console

modify in /etc/default/grub

# Grub Resolution
GRUB_GFXMODE=1024x768x24

# Kernel param to set a port to resolution and vertical refresh.
GRUB_CMDLINE_LINUX_DEFAULT="nomodeset video=VGA:M1024x768@60m"

Of course, you can set resolution to suit your needs by replacing 1024x768x24 to whatever you need.

Check if php-fpm is running and start if it’s not running

There are several solution on how to check if php5-fpm is running but they all failed (link1, link2).
The solution to check if php-fpm is running is to use wget to get a file in your server. If wget fails then restart the service.

This is the script to properly check if php-fpm is running and start php-fpm if it’s not running:

WordPress – give contributor permission to upload images without plugin.

WordPress contributor role lacks the permission to upload images.
There are a few plugins that can let you change role permissions, but I just needed to allow contributor role to upload images.

One minor change in the theme’s functions file is sufficient to give WordPress contributor role the permission to upload & insert images without plugin:

if ( current_user_can('contributor') && !current_user_can('upload_files') )
	add_action('admin_init', 'wif_allow_contributor_uploads');

function wif_allow_contributor_uploads() {
	$contributor = get_role('contributor');
	$contributor->add_cap('upload_files');
}

Get column names from table in MySql > 5

The following query will get column names from table in MySql > 5

SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = 'database_name' AND TABLE_NAME = 'table_name';

where

database_name is your database
table_name is your table

Git delete last commit

If you have not pushed a commit use the following command to delete last commit.

Git delete last commit

git reset --soft HEAD~1

jquery.validator.addmethod custom error message

How to implement a custom dynamic error message to your jQuery Validator method?

$.validator.addMethod("checkEmailAvailability",function(value,element){
	var result;
	$.ajax({
        type: "POST",
        async: false,
		url:"includes/ajax/check-availability.php",
		data:{email:value},
		dataType:"json",
        success: function(response) {
			result=response.success;
			$.validator.messages.checkEmailAvailability=response.msg;
         }
     });
	 return result;
});

In the above code the message for the validator method is set by using

$.validator.messages.checkEmailAvailability=response.msg;

where the response.msg is the message we receive from the server.

This is a good and simple JavaScript snippet for the jQuery Validator plugin on how to add a jquery.validator.addmethod custom error message.

If you find this useful leave us a comment.

How to prevent form submit on enter using jQuery

I had a client that pressed enter after typing in a form by mistake and kept saying that my script had an error.
After disabling the form submission on enter key the problem vanished 🙂

Prevent form submit on enter script :

$(document).keydown(function(evt) {
   var keyCode = evt ? (evt.which ? evt.which : evt.keyCode) : event.keyCode;
   if (keyCode == 13) {
     return false;
   }
});

Minimum Widths for the text container in Fluid Layouts

Minimum width for the text that flows around a floating element.

A floating element takes space from the horizontal space from the text that flows around it. If browser view port is small the horizontal space left for the text may only fit a word or two per line resulting in a ugly narrow column.

The problem: when browser width is 320px the space left the floating text is small and the text looks ugly.

The fix for columns too small to contain text is to use the pseudo element :before on the container that contains the floating text.

.floating-text-container {
     border-top: 1px solid transparent;/*fix for Mozilla Firefox*/
}
.floating-text-container:before {
      content: "";
      width: 100px;/*min width required for the floating text container */
      display: block;
      overflow: hidden;

}

The problem: when browser width is 320px the space left for the floating text is small and the text looks ugly but now the text will just show up under the image

If the browser width is greater, ex. 450px the text will float next to the image because the minimum width we set in the css is met

The problem: when browser width is 450px the space left for the floating text is small and the text looks ugly but now the text will just show up under the image

WordPress galleries sample.

WordPress gallery sample – images are not linked.

WordPress gallery sample – images linked to media.

WordPress gallery sample – images are linked to the attachment.

Make phpMyAdmin work with Varnish Cache.

How to make phpMyAdmin work on Nginx server with Varnish Cache?

Assuming you have configured Varnish Cache to drop cookies here is what you have to change to make phpMyAdmin work properly on your Nginx server.

after you install phpMyAdmin make a symbolic link

sudo ln -s /usr/share/phpmyadmin/ /usr/share/nginx/www

edit /etc/varnish/default.vcl – add in sub vcl_recv

if (req.url ~ "^/phpmyadmin") {
return (pass);
}

– add in sub vcl_fetch

if (req.url ~ "^/phpmyadmin") {
return (hit_for_pass);
}

edit /etc/phpmyadmin/config.inc.php and set

 $cfg['PmaAbsoluteUri']="http://yourdomain.com/phpmyadmin/";

You can see that it’s not that complicated to make phpMyAdmin work with Varnish Cache.