Feat: add database seeders for all models

database/seeders/OnlineCoursesTableSeeder.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace Database\Seeders;
+
+use Illuminate\Database\Seeder;
+use App\Models\OnlineCourse;
+use Carbon\Carbon;
+
+class OnlineCoursesTableSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        $courses = [
+            'Machine Learning Fundamentals',
+            'Blockchain Basics',
+            'Introduction to Cybersecurity',
+            'Cloud Computing Essentials',
+            'Artificial Intelligence for Everyone',
+            'Internet of Things (IoT) Applications',
+            'Big Data Analytics'
+        ];
+
+        $offeredBys = [
+            'Coursera', 
+            'edX', 
+            'Udemy', 
+            'NPTEL', 
+            'Google Digital Garage', 
+            'LinkedIn Learning', 
+            'Microsoft Learn'
+        ];
+
+        // Number of records to seed
+        $numberOfRecords = 10;
+
+        for ($i = 1; $i <= $numberOfRecords; $i++) {
+            // Generate random start and end dates
+            $startDate = Carbon::now()->subMonths(rand(1, 12))->subDays(rand(0, 30));
+            $endDate = (clone $startDate)->addDays(rand(5, 90)); // Course duration between 5 to 90 days
+            $numDays = $startDate->diffInDays($endDate) + 1;
+
+            OnlineCourse::create([
+                'faculty_id' => rand(1, 5),
+                'department_id' => rand(1, 5),
+                'course' => $courses[array_rand($courses)],
+                'offered_by' => $offeredBys[array_rand($offeredBys)],
+                'start_date' => $startDate->format('Y-m-d'),
+                'end_date' => $endDate->format('Y-m-d'),
+                'num_days' => $numDays,
+                'proof' => null, // Proof left null
+            ]);
+        }
+    }
+}