chore: init saasshop repo + sql migrations runner + gitee go

app/Models/Merchant.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Merchant extends Model
+{
+    use HasFactory;
+
+    protected $table = 'merchants';
+
+    protected $fillable = [
+        'name', 'slug', 'domain', 'contact_name', 'contact_phone', 'contact_email',
+        'plan', 'status', 'trial_ends_at', 'activated_at', 'settings',
+    ];
+
+    protected $casts = [
+        'trial_ends_at' => 'datetime',
+        'activated_at' => 'datetime',
+        'settings' => 'array',
+    ];
+
+    public function admins(): HasMany
+    {
+        return $this->hasMany(Admin::class, 'merchant_id');
+    }
+
+    public function users(): HasMany
+    {
+        return $this->hasMany(User::class, 'merchant_id');
+    }
+
+    public function products(): HasMany
+    {
+        return $this->hasMany(Product::class, 'merchant_id');
+    }
+
+    public function orders(): HasMany
+    {
+        return $this->hasMany(Order::class, 'merchant_id');
+    }
+
+    public function categories(): HasMany
+    {
+        return $this->hasMany(ProductCategory::class, 'merchant_id');
+    }
+}