feat(entries): add ability to fetch and filter entries by fields with help of array dot path.

src/flextype/core/Entries/Entries.php

@@ -14,6 +14,7 @@ use Doctrine\Common\Collections\Criteria;
 use Doctrine\Common\Collections\Expr\Comparison;
 use Flextype\Component\Filesystem\Filesystem;
 use Flextype\Component\Session\Session;
+use Flextype\Component\Arr\Arr;
 use Ramsey\Uuid\Uuid;
 use function array_merge;
 use function count;
@@ -391,6 +392,9 @@ class Entries
                         // For each founded entry we should create $entries array.
                         $entry = $this->fetch($uid);
 
+                        // Flatten a multi-dimensional entries array with dots.
+                        $entry = Arr::dot($entry);
+
                         // Add entry into the entries
                         $entries[$uid] = $entry;
 
@@ -483,6 +487,11 @@ class Entries
                 // Gets a native PHP array representation of the collection.
                 $entries = $entries->toArray();
 
+                // Magic is here... dot and undot for entries array
+                // 1. Flatten a multi-dimensional entries array with dots.
+                // 2. Restore entries array with dots into correct multi-dimensional entries array
+                $entries = Arr::undot(Arr::dot($entries));
+
                 // Restore error_reporting
                 error_reporting($oldErrorReporting);