Merge pull request #3837 from Laravel-Backpack/fix-for-pg-complain-about-empty-queries

Prevent DB query when value is empty

Author: tabacitu

src/resources/views/crud/fields/relationship/fetch.blade.php

@@ -26,7 +26,7 @@
     // make sure the $field['value'] takes the proper value
     // and format it to JSON, so that select2 can parse it
     $current_value = old(square_brackets_to_dots($field['name'])) ?? $field['value'] ?? $field['default'] ?? '';
-    if ($current_value != false) {
+    if (!empty($current_value) || is_int($current_value)) {
         switch (gettype($current_value)) {
             case 'array':
                 $current_value = $connected_entity

src/resources/views/crud/fields/relationship/fetch_or_create.blade.php

@@ -12,7 +12,7 @@
     // and format it to JSON, so that select2 can parse it
     $current_value = old(square_brackets_to_dots($field['name'])) ?? old($field['name']) ?? $field['value'] ?? $field['default'] ?? '';
 
-    if ($current_value !== false) {
+    if (!empty($current_value) || is_int($current_value)) {
         switch (gettype($current_value)) {
             case 'array':
                 $current_value = $connected_entity

src/resources/views/crud/fields/relationship/relationship_select.blade.php

@@ -18,7 +18,7 @@
     $current_value = old(square_brackets_to_dots($field['name'])) ?? $field['value'] ?? $field['default'] ?? '';
 
 
-    if ($current_value != false) {
+    if (!empty($current_value) || is_int($current_value)) {
         switch (gettype($current_value)) {
             case 'array':
                 $current_value = $connected_entity