Fix chart render issue on frontend side Codeinwp/visualizer-pro#316

Author: girishpanchal30

classes/Visualizer/Module/Frontend.php

@@ -570,13 +570,25 @@ private function getChartData( $cache_key = '', $chart_id = 0 ) {
 		// Get chart by ID.
 		$chart = get_post( $chart_id );
 		if ( $chart && Visualizer_Plugin::CPT_VISUALIZER === $chart->post_type ) {
+			$settings = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SETTINGS, true );
+			$series   = get_post_meta( $chart->ID, Visualizer_Plugin::CF_SERIES, true );
+
+			if ( isset( $settings['series'] ) && ! ( count( $settings['series'] ) - count( $series ) > 1 ) ) {
+				$diff_total_series = abs( count( $settings['series'] ) - count( $series ) );
+				if ( $diff_total_series ) {
+					foreach ( range( 1, $diff_total_series ) as $k => $diff_series ) {
+						$settings['series'][] = end( $settings['series'] );
+					}
+				}
+			}
 			$chart_data = array(
 				'chart'       => $chart,
 				'type'        => get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_TYPE, true ),
-				'settings'    => get_post_meta( $chart->ID, Visualizer_Plugin::CF_SETTINGS, true ),
-				'series'      => get_post_meta( $chart->ID, Visualizer_Plugin::CF_SERIES, true ),
+				'settings'    => $settings,
+				'series'      => $series,
 				'chart_image' => get_post_meta( $chart->ID, Visualizer_Plugin::CF_CHART_IMAGE, true ),
 			);
+
 			// Put the results in a transient. Expire after 12 hours.
 			set_transient( $cache_key, $chart_data, apply_filters( Visualizer_Plugin::FILTER_HANDLE_CACHE_EXPIRATION_TIME, 12 * HOUR_IN_SECONDS ) );
 			return $chart_data;