At least in Tinker this seems to basically have all of the right relationships

app/Models/Accessory.php

@@ -255,8 +255,7 @@ class Accessory extends SnipeModel
      */
     public function checkouts()
     {
-        return $this->hasMany(\App\Models\AccessoryCheckout::class, 'accessory_id')
+        return $this->hasMany(\App\Models\AccessoryCheckout::class, 'accessory_id'); // TODO - is that right, is that what I want?
-            ->with('assignedTo');
     }
 
     /**

app/Models/AccessoryCheckout.php

@@ -45,7 +45,7 @@ class AccessoryCheckout extends Model
      * @return \Illuminate\Database\Eloquent\Relations\Relation
      */
     public function user()
-    {
+    { // This needs fixing
         return $this->hasOne(\App\Models\User::class, 'user_id');
     }
 
@@ -58,7 +58,7 @@ class AccessoryCheckout extends Model
      */
     public function assignedTo()
     {
-        return $this->morphTo('assigned', 'assigned_type', 'assigned_to')->withTrashed();
+        return $this->morphTo('assigned' /* this? */, 'assigned_type', 'assigned_to')->withTrashed();
     }
 
     /**

app/Models/Location.php

@@ -249,10 +249,15 @@ class Location extends SnipeModel
      * @return \Illuminate\Database\Eloquent\Relations\Relation
      */
     public function assignedAssets()
-    {
+    { //the morph relationship is weird here?
         return $this->morphMany(\App\Models\Asset::class, 'assigned', 'assigned_type', 'assigned_to')->withTrashed();
     }
 
+    public function assignedAccessories()
+    {
+        return $this->morphMany(AccessoryCheckout::class, 'assigned', 'assigned_type', 'assigned_to');
+    }
+
     public function setLdapOuAttribute($ldap_ou)
     {
         return $this->attributes['ldap_ou'] = empty($ldap_ou) ? null : $ldap_ou;

app/Models/User.php

@@ -331,6 +331,13 @@ class User extends SnipeModel implements AuthenticatableContract, AuthorizableCo
      */
     public function accessories()
     {
+        /*******************************
+         *
+         * so 'assignedTo' as the name returns 'unknown column accessories_checkout.assignedTo_type'
+         * 'assigned' returns 'unknown column accessories_checkout.assigned_id'
+         */
+        return $this->morphMany(AccessoryCheckout::class, 'assigned', 'assigned_type', 'assigned_to');
+        //no, wrong. I mean, it's skipping the polymorphic-ness
         return $this->belongsToMany(\App\Models\Accessory::class, 'accessories_checkout', 'assigned_to', 'accessory_id')
             ->withPivot('id', 'created_at', 'note')->withTrashed()->orderBy('accessory_id');
     }