From 8e3202c23b3d5726d1eb9165443a9d004c2e14a9 Mon Sep 17 00:00:00 2001
From: scribu <mail@scribu.net>
Date: Thu, 19 Sep 2013 23:18:49 +0300
Subject: [PATCH] add --field arg to 'wp post get'

---
 features/post.feature |  2 +-
 php/commands/post.php | 40 ++++++++++++++++++++++++++++++----------
 2 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/features/post.feature b/features/post.feature
index 8d6816ad..8b784471 100644
--- a/features/post.feature
+++ b/features/post.feature
@@ -50,7 +50,7 @@ Feature: Manage WordPress posts
       excerpt
       """
 
-    When I run `wp post get --format=content {POST_ID}`
+    When I run `wp post get --field=content {POST_ID}`
     Then STDOUT should be:
       """
       This is some content.
diff --git a/php/commands/post.php b/php/commands/post.php
index 5b8a7346..dc1d1d21 100644
--- a/php/commands/post.php
+++ b/php/commands/post.php
@@ -138,11 +138,13 @@ class Post_Command extends \WP_CLI\CommandWithDBObject {
 	 * <id>
 	 * : The ID of the post to get.
 	 *
+	 * [--field=<field>]
+	 * : Instead of returning the whole post, returns the value of a single field. The --format=
+	 *   parameter is ignored in this case.
+	 *
 	 * [--format=<format>]
 	 * : The format to use when printing the post, acceptable values:
 	 *
-	 *   - **content**: Outputs only the post's content.
-	 *
 	 *   - **table**: Outputs all fields of the post as a table. Note that the
 	 *     post_content field is omitted so that the table is readable.
 	 *
@@ -150,9 +152,8 @@ class Post_Command extends \WP_CLI\CommandWithDBObject {
 	 *
 	 * ## EXAMPLES
 	 *
-	 *     wp post get 12 --format=content
-	 *
-	 *     wp post get 12 > file.txt
+	 * 	   # save the post content to a file
+	 *     wp post get 12 --field=content > file.txt
 	 */
 	public function get( $args, $assoc_args ) {
 		$defaults = array(
@@ -162,13 +163,32 @@ class Post_Command extends \WP_CLI\CommandWithDBObject {
 
 		$post_id = $args[0];
 		if ( !$post_id || !$post = get_post( $post_id ) )
-			\WP_CLI::error( "Failed opening post $post_id to get." );
+			\WP_CLI::error( "Could not find the post with ID $post_id." );
 
-		switch ( $assoc_args['format'] ) {
+		if ( isset( $assoc_args['field'] ) ) {
+			self::show_single_field( $post, $assoc_args['field'] );
+		} else {
+			self::show_multiple_fields( $post, $assoc_args );
+		}
+	}
 
-		case 'content':
-			WP_CLI::print_value( $post->post_content );
-			break;
+	private function show_single_field( $post, $field ) {
+		$value = null;
+
+		foreach ( array( $field, "post_$field" ) as $key ) {
+			if ( isset( $post->$key ) )
+				$value = $post->$key;
+		}
+
+		if ( null === $value ) {
+			\WP_CLI::error( "Invalid post field: $field." );
+		} else {
+			WP_CLI::print_value( $value );
+		}
+	}
+
+	private function show_multiple_fields( $post, $assoc_args ) {
+		switch ( $assoc_args['format'] ) {
 
 		case 'table':
 			$fields = get_object_vars( $post );
-- 
2.11.0