minor fixes

app/Models/Shop/CustomerSaleChannel.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Models\Shop;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Wildside\Userstamps\Userstamps;
+
+class CustomerSaleChannel extends Model
+{
+    use SoftDeletes, Userstamps;
+
+    protected $guarded = ['id'];
+
+    protected $table = 'shop_customer_sale_channels';
+
+    public function customer()
+    {
+        return $this->belongsTo(Customer::class);
+    }
+
+    public function sale_channel()
+    {
+        return $this->belongsTo(SaleChannel::class);
+    }
+
+    public function scopeByCustomer($query, $customerId)
+    {
+        return $query->where($this->table.'.customer_id', $customerId);
+    }
+
+    public function scopeBySaleChannel($query, $saleChannelId)
+    {
+        return $query->where($this->table.'.sale_channel_id', $saleChannelId);
+    }
+}