feat: multi-tenant SaaS implementation - admin interface, tenant isolation, and UI updates

app/Models/Candidate.php

@@ -9,10 +9,12 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 
-#[Fillable(['user_id', 'job_position_id', 'phone', 'linkedin_url', 'status', 'notes', 'cv_score', 'motivation_score', 'interview_score', 'ai_analysis'])]
+use App\Traits\BelongsToTenant;
+
+#[Fillable(['user_id', 'job_position_id', 'phone', 'linkedin_url', 'status', 'notes', 'cv_score', 'motivation_score', 'interview_score', 'ai_analysis', 'tenant_id'])]
 class Candidate extends Model
 {
-    use HasFactory;
+    use HasFactory, BelongsToTenant;
 
     protected $casts = [
         'ai_analysis' => 'array',

app/Models/JobPosition.php

@@ -7,10 +7,12 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 
-#[Fillable(['title', 'description', 'requirements', 'ai_prompt'])]
+use App\Traits\BelongsToTenant;
+
+#[Fillable(['title', 'description', 'requirements', 'ai_prompt', 'tenant_id'])]
 class JobPosition extends Model
 {
-    use HasFactory;
+    use HasFactory, BelongsToTenant;
 
     protected $casts = [
         'requirements' => 'array',

app/Models/Quiz.php

@@ -8,10 +8,12 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 
-#[Fillable(['title', 'description', 'duration_minutes'])]
+use App\Traits\BelongsToTenant;
+
+#[Fillable(['title', 'description', 'duration_minutes', 'tenant_id'])]
 class Quiz extends Model
 {
-    use HasFactory;
+    use HasFactory, BelongsToTenant;
 
     public function questions(): HasMany
     {

app/Models/Tenant.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+
+#[Fillable(['name'])]
+class Tenant extends Model
+{
+    public function users()
+    {
+        return $this->hasMany(User::class);
+    }
+
+    public function candidates()
+    {
+        return $this->hasMany(Candidate::class);
+    }
+
+    public function quizzes()
+    {
+        return $this->hasMany(Quiz::class);
+    }
+
+    public function jobPositions()
+    {
+        return $this->hasMany(JobPosition::class);
+    }
+}

app/Models/User.php

@@ -10,7 +10,7 @@ use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\Notifiable;
 
-#[Fillable(['name', 'email', 'password', 'role'])]
+#[Fillable(['name', 'email', 'password', 'role', 'tenant_id'])]
 #[Hidden(['password', 'remember_token'])]
 class User extends Authenticatable
 {
@@ -19,7 +19,12 @@ class User extends Authenticatable
 
     public function isAdmin(): bool
     {
-        return $this->role === 'admin';
+        return in_array($this->role, ['admin', 'super_admin']);
+    }
+
+    public function isSuperAdmin(): bool
+    {
+        return $this->role === 'super_admin';
     }
 
     public function isCandidate(): bool
@@ -32,6 +37,11 @@ class User extends Authenticatable
         return $this->hasOne(Candidate::class);
     }
 
+    public function tenant()
+    {
+        return $this->belongsTo(Tenant::class);
+    }
+
     /**
      * Get the attributes that should be cast.
      *