Fix fetch with empty args to return everything

src/classes/repositories/class-tainacan-filters.php

@@ -178,7 +178,7 @@ class Filters extends Repository {
     public function fetch($args = [], $output = null){
         if( is_numeric($args) ){
             return new Entities\Filter($args);
-        } elseif (!empty($args)) {
+        } elseif (is_array($args)) {
             // TODO: get filters from parent collections
             $args = array_merge([
                 'posts_per_page' => -1,

src/classes/repositories/class-tainacan-items.php

@@ -61,10 +61,12 @@ class Items extends Repository {
         }
          
         // register taxonomies
+        if (is_array($taxonomies) && sizeof($taxonomies) > 0) {
             foreach ($taxonomies as $taxonomy) {
                 $taxonomy->register_taxonomy();
             }  
         }
+    }
  
     public function insert($item) {
 

src/classes/repositories/class-tainacan-logs.php

@@ -124,7 +124,7 @@ class Logs extends Repository {
     public function fetch($args = [], $output = null){
         if(is_numeric($args)){
     	    return new Entities\Log($args);
-        } else {
+        } elseif (is_array($args)) {
             $args = array_merge([
                 'post_status'    => 'publish',
             ], $args);

src/classes/repositories/class-tainacan-metadatas.php

@@ -202,7 +202,7 @@ class Metadatas extends Repository {
 
         if( is_numeric($args) ){
             return new Entities\Metadata($args);
-        } elseif (!empty($args)) {
+        } elseif (is_array($args)) {
 
             $args = array_merge([
                 'posts_per_page' => -1,

src/classes/repositories/class-tainacan-taxonomies.php

@@ -163,7 +163,7 @@ class Taxonomies extends Repository {
         
         if( is_numeric($args) ){
             return new Entities\Taxonomy($args);
-        } elseif (!empty($args)) {
+        } elseif (is_array($args)) {
 
             $args = array_merge([
                 'posts_per_page' => -1,