Merge pull request #182 from BhargavBhandari90/GL-180

Add command for post exists

Author: schlessera

README.md

@@ -2177,6 +2177,36 @@ wp post edit <id>
 
 
 
+### wp post exists
+
+Verifies whether a post exists.
+
+~~~
+wp post exists <id>
+~~~
+
+Displays a success message if the post does exist.
+
+**OPTIONS**
+
+	<id>
+		The ID of the post to check.
+
+**EXAMPLES**
+
+    # The post exists.
+    $ wp post exists 1
+    Success: Post with ID 1337 exists.
+    $ echo $?
+    0
+
+    # The post does not exist.
+    $ wp post exists 10000
+    $ echo $?
+    1
+
+
+
 ### wp post generate
 
 Generates some posts.

composer.json

@@ -91,6 +91,7 @@
             "post create",
             "post delete",
             "post edit",
+            "post exists",
             "post generate",
             "post get",
             "post list",

features/post.feature

@@ -8,6 +8,17 @@ Feature: Manage WordPress posts
     Then STDOUT should be a number
     And save STDOUT as {POST_ID}
 
+    When I run `wp post exists {POST_ID}`
+    Then STDOUT should be:
+      """
+    Success: Post with ID {POST_ID} exists.
+      """
+    And the return code should be 0
+
+    When I try `wp post exists 1000`
+    And STDOUT should be empty
+    And the return code should be 1
+
     When I run `wp post update {POST_ID} --post_title='Updated post'`
     Then STDOUT should be:
       """

src/Post_Command.php

@@ -899,4 +899,35 @@ private function get_tags( $post_id ) {
 
 		return $tag_arr;
 	}
+
+	/**
+	 * Verifies whether a post exists.
+	 *
+	 * Displays a success message if the post does exist.
+	 *
+	 * ## OPTIONS
+	 *
+	 * <id>
+	 * : The ID of the post to check.
+	 *
+	 * ## EXAMPLES
+	 *
+	 *     # The post exists.
+	 *     $ wp post exists 1
+	 *     Success: Post with ID 1337 exists.
+	 *     $ echo $?
+	 *     0
+	 *
+	 *     # The post does not exist.
+	 *     $ wp post exists 10000
+	 *     $ echo $?
+	 *     1
+	 */
+	public function exists( $args ) {
+		if ( $this->fetcher->get( $args[0] ) ) {
+			WP_CLI::success( "Post with ID {$args[0]} exists." );
+		} else {
+			WP_CLI::halt( 1 );
+		}
+	}
 }