diff --git a/src/Illuminate/Database/Eloquent/Concerns/HasUlids.php b/src/Illuminate/Database/Eloquent/Concerns/HasUlids.php
index 85a810db5ee1..7b914420929b 100644
--- a/src/Illuminate/Database/Eloquent/Concerns/HasUlids.php
+++ b/src/Illuminate/Database/Eloquent/Concerns/HasUlids.php
@@ -7,28 +7,10 @@
 
 trait HasUlids
 {
-    /**
-     * Initialize the trait.
-     *
-     * @return void
-     */
-    public function initializeHasUlids()
-    {
-        $this->usesUniqueIds = true;
-    }
+    use HasUniqueStringIds;
 
     /**
-     * Get the columns that should receive a unique identifier.
-     *
-     * @return array
-     */
-    public function uniqueIds()
-    {
-        return [$this->getKeyName()];
-    }
-
-    /**
-     * Generate a new ULID for the model.
+     * Generate a new unique key for the model.
      *
      * @return string
      */
@@ -38,53 +20,13 @@ public function newUniqueId()
     }
 
     /**
-     * Retrieve the model for a bound value.
+     * Determine if given key is valid.
      *
-     * @param  \Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Relations\Relation<*, *, *>  $query
      * @param  mixed  $value
-     * @param  string|null  $field
-     * @return \Illuminate\Contracts\Database\Eloquent\Builder
-     *
-     * @throws \Illuminate\Database\Eloquent\ModelNotFoundException
-     */
-    public function resolveRouteBindingQuery($query, $value, $field = null)
-    {
-        if ($field && in_array($field, $this->uniqueIds()) && ! Str::isUlid($value)) {
-            throw (new ModelNotFoundException)->setModel(get_class($this), $value);
-        }
-
-        if (! $field && in_array($this->getRouteKeyName(), $this->uniqueIds()) && ! Str::isUlid($value)) {
-            throw (new ModelNotFoundException)->setModel(get_class($this), $value);
-        }
-
-        return parent::resolveRouteBindingQuery($query, $value, $field);
-    }
-
-    /**
-     * Get the auto-incrementing key type.
-     *
-     * @return string
-     */
-    public function getKeyType()
-    {
-        if (in_array($this->getKeyName(), $this->uniqueIds())) {
-            return 'string';
-        }
-
-        return $this->keyType;
-    }
-
-    /**
-     * Get the value indicating whether the IDs are incrementing.
-     *
      * @return bool
      */
-    public function getIncrementing()
+    protected function isValidUniqueId($value): bool
     {
-        if (in_array($this->getKeyName(), $this->uniqueIds())) {
-            return false;
-        }
-
-        return $this->incrementing;
+        return Str::isUlid($value);
     }
 }
diff --git a/src/Illuminate/Database/Eloquent/Concerns/HasUniqueStringIds.php b/src/Illuminate/Database/Eloquent/Concerns/HasUniqueStringIds.php
new file mode 100644
index 000000000000..19728a41b11e
--- /dev/null
+++ b/src/Illuminate/Database/Eloquent/Concerns/HasUniqueStringIds.php
@@ -0,0 +1,97 @@
+<?php
+
+namespace Illuminate\Database\Eloquent\Concerns;
+
+use Illuminate\Database\Eloquent\ModelNotFoundException;
+use Illuminate\Support\Str;
+
+trait HasUniqueStringIds
+{
+    /**
+     * Generate a new unique key for the model.
+     *
+     * @return mixed
+     */
+    abstract public function newUniqueId();
+
+    /**
+     * Determine if given key is valid.
+     *
+     * @param  mixed  $value
+     * @return bool
+     */
+    abstract protected function isValidUniqueId($value): bool;
+
+    /**
+     * Initialize the trait.
+     *
+     * @return void
+     */
+    public function initializeHasUniqueStringIds()
+    {
+        $this->usesUniqueIds = true;
+    }
+
+    /**
+     * Get the columns that should receive a unique identifier.
+     *
+     * @return array
+     */
+    public function uniqueIds()
+    {
+        return [$this->getKeyName()];
+    }
+
+
+    /**
+     * Retrieve the model for a bound value.
+     *
+     * @param  \Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Relations\Relation<*, *, *>  $query
+     * @param  mixed  $value
+     * @param  string|null  $field
+     * @return \Illuminate\Contracts\Database\Eloquent\Builder
+     *
+     * @throws \Illuminate\Database\Eloquent\ModelNotFoundException
+     */
+    public function resolveRouteBindingQuery($query, $value, $field = null)
+    {
+        if ($field && in_array($field, $this->uniqueIds()) && ! $this->isValidUniqueId($value)) {
+            throw (new ModelNotFoundException)->setModel(get_class($this), $value);
+        }
+
+        if (! $field && in_array($this->getRouteKeyName(), $this->uniqueIds()) && ! $this->isValidUniqueId($value)) {
+            throw (new ModelNotFoundException)->setModel(get_class($this), $value);
+        }
+
+        return parent::resolveRouteBindingQuery($query, $value, $field);
+    }
+
+    /**
+     * Get the auto-incrementing key type.
+     *
+     * @return string
+     */
+    public function getKeyType()
+    {
+        if (in_array($this->getKeyName(), $this->uniqueIds())) {
+            return 'string';
+        }
+
+        return $this->keyType;
+    }
+
+    /**
+     * Get the value indicating whether the IDs are incrementing.
+     *
+     * @return bool
+     */
+    public function getIncrementing()
+    {
+        if (in_array($this->getKeyName(), $this->uniqueIds())) {
+            return false;
+        }
+
+        return $this->incrementing;
+    }
+
+}
diff --git a/src/Illuminate/Database/Eloquent/Concerns/HasUuids.php b/src/Illuminate/Database/Eloquent/Concerns/HasUuids.php
index 55d1acfe770e..dc1984054748 100644
--- a/src/Illuminate/Database/Eloquent/Concerns/HasUuids.php
+++ b/src/Illuminate/Database/Eloquent/Concerns/HasUuids.php
@@ -7,28 +7,10 @@
 
 trait HasUuids
 {
-    /**
-     * Initialize the trait.
-     *
-     * @return void
-     */
-    public function initializeHasUuids()
-    {
-        $this->usesUniqueIds = true;
-    }
+    use HasUniqueStringIds;
 
     /**
-     * Get the columns that should receive a unique identifier.
-     *
-     * @return array
-     */
-    public function uniqueIds()
-    {
-        return [$this->getKeyName()];
-    }
-
-    /**
-     * Generate a new UUID for the model.
+     * Generate a new unique key for the model.
      *
      * @return string
      */
@@ -38,53 +20,13 @@ public function newUniqueId()
     }
 
     /**
-     * Retrieve the model for a bound value.
+     * Determine if given key is valid.
      *
-     * @param  \Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Relations\Relation<*, *, *>  $query
      * @param  mixed  $value
-     * @param  string|null  $field
-     * @return \Illuminate\Contracts\Database\Eloquent\Builder
-     *
-     * @throws \Illuminate\Database\Eloquent\ModelNotFoundException
-     */
-    public function resolveRouteBindingQuery($query, $value, $field = null)
-    {
-        if ($field && in_array($field, $this->uniqueIds()) && ! Str::isUuid($value)) {
-            throw (new ModelNotFoundException)->setModel(get_class($this), $value);
-        }
-
-        if (! $field && in_array($this->getRouteKeyName(), $this->uniqueIds()) && ! Str::isUuid($value)) {
-            throw (new ModelNotFoundException)->setModel(get_class($this), $value);
-        }
-
-        return parent::resolveRouteBindingQuery($query, $value, $field);
-    }
-
-    /**
-     * Get the auto-incrementing key type.
-     *
-     * @return string
-     */
-    public function getKeyType()
-    {
-        if (in_array($this->getKeyName(), $this->uniqueIds())) {
-            return 'string';
-        }
-
-        return $this->keyType;
-    }
-
-    /**
-     * Get the value indicating whether the IDs are incrementing.
-     *
      * @return bool
      */
-    public function getIncrementing()
+    protected function isValidUniqueId($value): bool
     {
-        if (in_array($this->getKeyName(), $this->uniqueIds())) {
-            return false;
-        }
-
-        return $this->incrementing;
+        return Str::isUuid($value);
     }
 }