Get the Featured Image URL in Wordpress

I looked for an elegant way to find the URL of a specific size of the Featured Image in WordPress for a while. This is a nice way:

Get Featured Image URL

Setting up .htaccess URL Redirects in Wordpress

The correct way to setup redirects within the WordPress .htaccess file is to put your redirects above the WordPress pretty permalinks code like so:

# BEGIN Redirects

Redirect 301 /from-here/ http://www.domain.com/to-here

# END Redirects

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

Scheduling a category change, based on an Advanced Custom Field value, when a post is saved using a Wordpress CRON job

The problem:

We had a client’s website that had a custom post type called ‘Events’. We also had a category called ‘Past Events’. This category hid the Event from the Current Events page. When an event had passed our client had to go into the backend and put the Event into the ‘Past Events’ category. As the volume of Events increased this process became too time intensive.

We wanted to maintain the mechanism of using a category to hide them as we had used this in many loops throughout the site but we needed a way to make a past event automatically add to that category at a certain date.

In addition to this we needed the date to be set via a start date or optional end date field created with the brilliant Advanced Custom Fields Plugin.

So, in a nutshell we needed to change an individual post’s category on a given date (via an ACF field) sometime in the future.

The solution:

Overview

  1. Create a function that sets a WP Cron job to fire the day after an event ends
  2. Create or update that Cron job every time the post is saved (ie. created or edited)
  3. Create a function that puts the post into the past events category
  4. Run that function when the WP Cron job is fire

The code

The code solutions here are very well commented but I have not gone into detail about why I did certain things certain ways due to time. If there is interest in me doing this then please ask in the comments and I will find the time.

Create a function that sets a WP Cron job to fire the day after an event ends.

// Create a cron job to run the day after an event happens or ends
function set_expiry_date( $post_id ) {

  // See if an event_end_date or event_date has been entered and if not then end the function
  if( get_post_meta( $post_id, $key = 'event_end_date', $single = true ) ) {

    // Get the end date of the event in unix grenwich mean time
    $acf_end_date = get_post_meta( $post_id, $key = 'event_end_date', $single = true );

  } elseif ( get_post_meta( $post_id, $key = 'event_date', $single = true ) ) {

    // Get the start date of the event in unix grenwich mean time
    $acf_end_date = get_post_meta( $post_id, $key = 'event_date', $single = true );

  } else {

    // No start or end date. Lets delete any CRON jobs related to this post and end the function.
    wp_clear_scheduled_hook( 'make_past_event', array( $post_id ) );
    return;

  }

  // Convert our date to the correct format
  $unix_acf_end_date = strtotime( $acf_end_date );
  $gmt_end_date = gmdate( 'Ymd', $unix_acf_end_date );
  $unix_gmt_end_date = strtotime( $gmt_end_date );

  // Get the number of seconds in a day
  $delay = 24 * 60 * 60; //24 hours * 60 minutes * 60 seconds

  // Add 1 day to the end date to get the day after the event
  $day_after_event = $unix_gmt_end_date + $delay;

  // Temporarily remove from 'Past Event' category
  wp_remove_object_terms( $post_id, 'past-events', 'category' );

  // If a CRON job exists with this post_id them remove it
  wp_clear_scheduled_hook( 'make_past_event', array( $post_id ) );
  // Add the new CRON job to run the day after the event with the post_id as an argument
  wp_schedule_single_event( $day_after_event , 'make_past_event', array( $post_id ) );

}

Create or update that Cron job every time the post is saved (ie. created or edited)

// Hook into the save_post_{post-type} function to create/update the cron job everytime an event is saved.
add_action( 'acf/save_post', 'set_expiry_date', 20 );

Create a function that puts the post into the past events category

// Create a function that adds the post to the past-events category
function set_past_event_category( $post_id ){

  // Set the post category to 'Past Event'
  wp_set_post_categories( $post_id, array( 53 ), true );

}

Run that function when the WP Cron job is fire

// Hook into the make_past_event CRON job so that the set_past_event_category function runs when the CRON job is fired.
add_action( 'make_past_event', 'set_past_event_category' );

Resources

Good WP Cron job tutorial
http://www.smashingmagazine.com/2013/10/schedule-events-using-wordpress-cron/

ACF save_post function
http://www.advancedcustomfields.com/resources/acfsave_post/

A plugin used for debugging the CRON jobs
https://en-gb.wordpress.org/plugins/wp-crontrol/

Open a list of URL’s in Google Chrome using Mac Automator

We are currently delving, as a studio, into any automation tasks that can speed up our workflow and make our life less boring. The first step of this was to create a way to speedily open up three webpages that I use to create and send invoices to our clients with. To do this I used Automator which comes as standard with Mac OS and a bit of applescript. The steps I took are outlined below.

1. Open up automator and make a new Workflow document

Screen Shot 2016-01-06 at 12.41.19

2. Add the “get specified URL’s” task to the workflow and enter in the three urls you want to open. They will be passed onto the next task as a list.

Screen Shot 2016-01-06 at 12.42.51

3. Add the “Run Applescript” task to the workflow and enter in the correct applescript to loop through the list of url’s (passed to the task as the input variable) and tell Google Chrome to open the location.

# input is the list of url's from the previous task
on run {input, parameters}
	
	# The below is an applescript loop
	repeat with theURL in input
		tell application "Google Chrome" to open location theURL
	end repeat
	
	# We must return something so we just return the input
	return input

end run

Screen Shot 2016-01-06 at 12.43.15

4. Save and run the automator workflow.

This is a relatively simple task but important for us to begin automating some of the more dreary tasks we have to complete in the studio.

Developing a Shopify theme locally

Update

As of January 2017 the Shopify Theme Gem is no longer supported and they recommend using their new tool Shopify Theme Kit. You can achieve the same tasks and more. It is also much easier to setup.

Here at Multiple States we use Shopify as our recommended e-commerce platform. When we need to work on a theme locally we use the Shopify theme gem. It is a command line tool that lets you make live changes to themes in your Shopify account.

Within our clients Shopify account we have two installs of the theme, production and staging. The Shopify theme gem allows us to push changes to the staging theme and preview them in browser for testing before we push them to production.

Installing the Shopify theme gem

To install the Shopify theme gem on OS X El Capitan you will need to follw the following steps:

  1. Open Terminal
  2. First, we need to install Homebrew. Homebrew allows us to install and compile software packages easily from source. Homebrew comes with a very simple install script. When it asks you to install XCode CommandLine Tools, say yes. Open Terminal and run the following command:
    ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
  3. Now that we have Homebrew installed, we can use it to install Ruby. We’re going to use rbenv to install and manage our Ruby versions. To do this, run the following commands in your Terminal:
    brew install rbenv ruby-build
    
    # Add rbenv to bash so that it loads every time you open a terminal
    echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile
    source ~/.bash_profile
    
    # Install Ruby
    rbenv install 2.2.3
    rbenv global 2.2.3
    ruby -v
  4. To install the shopify_theme gem use ‘gem install’ (you might have use ‘sudo gem install’)
    gem install shopify_theme
  5. To setup your config file you can follow the instruction outlined at http://shopify.github.io/shopify_theme/

Sources

https://gorails.com/setup/osx/10.11-el-capitan

http://shopify.github.io/shopify_theme/