diff --git a/app/Models/RoadItemsProject.php b/app/Models/RoadItemsProject.php
index d0a041d5..b71911c3 100644
--- a/app/Models/RoadItemsProject.php
+++ b/app/Models/RoadItemsProject.php
@@ -4,6 +4,7 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Database\Eloquent\Relations\MorphToMany;
 use Illuminate\Http\UploadedFile;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
@@ -167,17 +168,23 @@ class RoadItemsProject extends Model
         }
     }
 
-    public function cmmsMachines(): BelongsToMany
+    public function cmmsMachines(): MorphToMany
     {
-        return $this->belongsToMany(CMMSMachine::class,
-            'cmms_machine_road_items_project',
-            'road_items_project_id',
+        return $this->morphToMany(CMMSMachine::class,
+            'machinable',
+            'machinables',
+            'machinable_id',
             'machine_id'
         );
     }
 
-    public function rahdaran(): BelongsToMany
+    public function rahdaran(): MorphToMany
     {
-        return $this->belongsToMany(Rahdaran::class,'rahdaran_road_items_project');
+        return $this->morphToMany(Rahdaran::class,
+            'rahdarable',
+            'rahdarables',
+            'rahdarable_id',
+            'rahdar_id',
+        );
     }
 }
diff --git a/database/migrations/2024_12_25_133822_create_machinables_table.php b/database/migrations/2024_12_25_133822_create_machinables_table.php
new file mode 100644
index 00000000..4e81635b
--- /dev/null
+++ b/database/migrations/2024_12_25_133822_create_machinables_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('machinables', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('machine_id')->constrained('cmms_machines')->noActionOnDelete();
+            $table->morphs('machinable');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('machinable');
+    }
+};
diff --git a/database/migrations/2024_12_25_141411_create_rahdarables_table.php b/database/migrations/2024_12_25_141411_create_rahdarables_table.php
new file mode 100644
index 00000000..bdc37b30
--- /dev/null
+++ b/database/migrations/2024_12_25_141411_create_rahdarables_table.php
@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('rahdarables', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('rahdar_id')->constrained('rahdaran')->noActionOnDelete();
+            $table->morphs('rahdarable');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('rahdarables');
+    }
+};
diff --git a/resources/lang/fa/validation.php b/resources/lang/fa/validation.php
index 001946fc..0f2de9dc 100644
--- a/resources/lang/fa/validation.php
+++ b/resources/lang/fa/validation.php
@@ -201,5 +201,6 @@ return [
         'fields.*.type' => 'نوع فیلد',
         'fields.*.option' => 'گزینه های فیلد',
         'cmms_machine_id' => 'کد یکتا ماشین',
+        'contract_subitem_id' => 'کد یکتای پروژه',
     ],
 ];