Merge pull request #20 from Nikschavan/skip-tables

Add option to skip tables when exporting a database

Author: danielbachhuber

features/db-export.feature

@@ -19,3 +19,17 @@ Feature: Export a WordPress database
       wp_cli_test.sql
       """
     And the wp_cli_test.sql file should exist
+
+  Scenario: Exclude tables when exporting the dtabase
+    Given a WP install
+
+    When I run `wp db export wp_cli_test.sql --exclude_tables=wp_users --porcelain`
+    Then the wp_cli_test.sql file should exist
+    And the wp_cli_test.sql file should not contain:
+      """
+      wp_users
+      """
+    And the wp_cli_test.sql file should contain:
+      """
+      wp_options
+      """

src/DB_Command.php

@@ -264,6 +264,9 @@ public function query( $args, $assoc_args ) {
 	 *
 	 * [--tables=<tables>]
 	 * : The comma separated list of specific tables to export. Excluding this parameter will export all tables in the database.
+	 * 
+	 * [--exclude_tables=<tables>]
+	 * : The comma separated list of specific tables that should be skipped from exporting. Excluding this parameter will export all tables in the database.
 	 *
 	 * [--porcelain]
 	 * : Output filename for the exported database.
@@ -285,6 +288,18 @@ public function query( $args, $assoc_args ) {
 	 *     # Export all tables matching prefix
 	 *     $ wp db export --tables=$(wp db tables --all-tables-with-prefix --format=csv)
 	 *     Success: Exported to 'wordpress_dbase.sql'.
+	 * 
+	 *     # Skip certain tables from the exported database
+	 *     $ wp db export --exclude_tables=wp_options,wp_users
+	 *     Success: Exported to 'wordpress_dbase.sql'.
+	 *
+	 *     # Skip all tables matching a wildcard from the exported database
+	 *     $ wp db export --exclude_tables=$(wp db tables 'wp_user*' --format=csv)
+	 *     Success: Exported to 'wordpress_dbase.sql'.
+	 *
+	 *     # Skip all tables matching prefix from the exported database
+	 *     $ wp db export --exclude_tables=$(wp db tables --all-tables-with-prefix --format=csv)
+	 *     Success: Exported to 'wordpress_dbase.sql'.
 	 *
 	 * @alias dump
 	 */
@@ -320,6 +335,17 @@ public function export( $args, $assoc_args ) {
 			}
 		}
 
+		$exclude_tables = WP_CLI\Utils\get_flag_value( $assoc_args, 'exclude_tables' );
+		if ( isset( $exclude_tables ) ) {
+			$tables = explode( ',', trim( $assoc_args['exclude_tables'], ',' ) );
+			unset( $assoc_args['exclude_tables'] );
+			foreach ( $tables as $table ) {
+				$command .= ' --ignore-table';
+				$command .= ' %s';
+				$command_esc_args[] = trim( DB_NAME . '.' . $table );
+			}
+		}
+
 		$escaped_command = call_user_func_array( '\WP_CLI\Utils\esc_cmd', array_merge( array( $command ), $command_esc_args ) );
 
 		// Remove parameters not needed for SQL run.