Initial commit

admin.php

@@ -0,0 +1,130 @@
+<?php
+# Called only in /wp-admin/edit.php* pages
+add_action( 'load-edit.php', function()
+{
+	# Not our post_type, bail out
+	if ( get_current_screen()->id != 'edit-page' )
+		return;
+
+	# Transient cache for pages IDs and Count
+	# used in both hooks bellow
+	do_cache_wpse_77721();
+
+	# Check if our Query Var is defined and activate pre_get_posts
+	if( isset( $_GET['account'] ) || isset( $_GET['checkout'] ) )
+		add_action( 'pre_get_posts', 'pre_posts_wpse_77721' );
+
+	add_filter( 'views_edit-page', 'custom_links_wpse_77721' );
+});
+
+/**
+ * Only display comments of specific post_id
+ */
+function pre_posts_wpse_77721( $query )
+{
+	# Just to play safe, but I think the hook is quite specificaly called
+	if( !is_admin() )
+		return $query;
+
+	global $pagenow;
+
+	# If there's no cache, bail out
+	$cache = get_transient( 'custom_page_links' );
+	if( !$cache )
+		return $query;
+
+	# Define the IDs we want to query
+	if( isset( $_GET['account'] ) )
+		$ids = $cache['account']['ids'];
+	else
+		$ids = $cache['checkout']['ids'];
+
+	# Here, too, just playing safe
+	if( 'edit.php' == $pagenow && ( get_query_var('post_type') && 'page' == get_query_var('post_type') ) )
+		$query->set( 'post__in', $ids );
+
+	return $query;
+}
+
+/**
+ * Add link to specific post comments with counter
+ */
+function custom_links_wpse_77721( $status_links )
+{
+	$cache = get_transient( 'custom_page_links' );
+	$count_checkout = sprintf(
+		'<span class="count">(%s)</span>',
+		$cache['checkout']['count']
+	);
+	$count_account = sprintf(
+		'<span class="count">(%s)</span>',
+		$cache['account']['count']
+	);
+
+	$link_account = 'edit.php?post_type=page&account=1670';
+	$link_checkout = 'edit.php?post_type=page&checkout=1669';
+	$link_all = '<a href="edit.php?post_type=page">All</a>';
+	$separator = 'CUSTOM LINKS &#x27BD;';
+
+	if( isset( $_GET['checkout'] ) )
+	{
+		$status_links['all'] = $link_all;
+		$status_links['my_sep'] = $separator;
+		$status_links['account'] = "<a href='$link_account'>My Account $count_account</a>";
+		$status_links['checkout'] = "<a href='$link_checkout' class='current'>Checkout $count_checkout</a>";
+	}
+	elseif( isset( $_GET['account'] ) )
+	{
+		$status_links['all'] = $link_all;
+		$status_links['my_sep'] = $separator;
+		$status_links['account'] = "<a href='$link_account' class='current'>My Account $count_account</a>";
+		$status_links['checkout'] = "<a href='$link_checkout'>Checkout $count_checkout</a>";
+	}
+	else
+	{
+		$status_links['my_sep'] = $separator;
+		$status_links['account'] = "<a href='$link_account'>My Account $count_account</a>";
+		$status_links['checkout'] = "<a href='$link_checkout'>Checkout $count_checkout</a>";
+	}
+
+	return $status_links;
+}
+
+/**
+ * Makes the query once every hour
+ * holds the Parent and Children ID, plus the Children total pages count
+ */
+function do_cache_wpse_77721()
+{
+	if( !get_transient( 'custom_page_links' ) )
+	{
+		# Page 1
+		$checkout_posts = get_children( 'post_parent=1669&post_type=page' );
+		// To include the parent ID in the query
+		$c_ids = array( '1669' );
+		// Grab the children IDs
+		foreach( $checkout_posts as $check )
+			$c_ids[] = $check->ID;
+		$checkout = array(
+			'ids' => $c_ids,
+			'count' => count( $checkout_posts )
+		);
+
+		# Page 2
+		$account_posts = get_children( 'post_parent=1670&post_type=page' );
+		$a_ids = array( '1670' );
+		foreach( $account_posts as $acc )
+			$a_ids[] = $acc->ID;
+		$account = array(
+			'ids' => $a_ids,
+			'count' => count( $account_posts )
+		);
+
+		# Set transient
+		$transient = array(
+			'checkout' => $checkout,
+			'account' => $account
+		);
+		set_transient( 'custom_page_links', $transient, 60*60 );
+	}
+}