add foreignkey to event table

database/migrations/2020_07_19_085105_create_events_table.php

@@ -18,11 +18,23 @@ class CreateEventsTable extends Migration
             $table->unsignedBigInteger('user_id');
             $table->unsignedBigInteger('category_id');
             $table->string('name');
-            $table->string('description')->nullable();
+            $table->text('description')->nullable();
             $table->timestamp('start_date');
             $table->timestamp('end_date')->nullable();
             $table->string('location')->nullable();
             $table->timestamps();
+
+            $table->foreign('user_id')
+                ->references('id')
+                ->on('users')
+                ->onDelete('restrict')
+                ->onUpdate('restrict');
+
+            $table->foreign('category_id')
+                ->references('id')
+                ->on('event_categories')
+                ->onDelete('restrict')
+                ->onUpdate('restrict');
         });
     }
 
@@ -33,6 +45,10 @@ class CreateEventsTable extends Migration
      */
     public function down()
     {
+        Schema::table('events', function (Blueprint $table) {
+            $table->dropForeign(['user_id']);
+            $table->dropForeign(['category_id']);
+        });
         Schema::dropIfExists('events');
     }
 }