Don't use primary key for offers

src/Entity/Offering.php

@@ -62,6 +62,11 @@ class Offering
      */
     private $lng;
 
+    /**
+     * @ORM\Column(type="string", length=13)
+     */
+    private $urlId;
+
     public function getId(): ?int
     {
         return $this->id;
@@ -141,7 +146,7 @@ class Offering
 
     public function __toString(): string
     {
-        return (string) $this->getTitle();
+        return (string) $this-getTitle();
     }
 
     public function getCoordinate(): ?Coordinate
@@ -158,4 +163,16 @@ class Offering
 
         return $this;
     }
+
+    public function getUrlId(): ?string
+    {
+        return $this->urlId;
+    }
+
+    public function setUrlId(string $urlId): self
+    {
+        $this->urlId = $urlId;
+
+        return $this;
+    }
 }