app/Models/Barrio.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Barrio extends Model
+{
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = [
+        'name',
+    ];
+
+    /**
+     * La región a la que pertenece el barrio.
+     */
+    public function region(): BelongsTo
+    {
+        return $this->belongsTo(Region::class);
+    }
+}

app/Models/Region.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Region extends Model
+{
+    /**
+     * The table associated with the model.
+     *
+     * @var string
+     */
+    protected $table = 'regiones';
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = [
+        'name',
+    ];
+
+    /**
+     * Los barrios que pertenecen a la región.
+     */
+    public function barrios(): HasMany
+    {
+        return $this->hasMany(Barrio::class);
+    }
+}

database/migrations/2024_03_11_205603_create_regions_table.php

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+<?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('regiones', function (Blueprint $table) {
+            $table->id();
+            $table->timestamps();
+            $table->string('name', 100);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('regiones');
+    }
+};

database/migrations/2024_03_11_210402_create_barrios_table.php

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+<?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('barrios', function (Blueprint $table) {
+            $table->id();
+            $table->timestamps();
+            $table->string('name', 100);    
+            $table->unsignedBigInteger('region_id');
+            $table->foreign('region_id')->references('id')->on('regiones');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('barrios');
+    }
+};