Bill item tax multible files added

app/Models/Expense/Bill.php

@@ -82,6 +82,11 @@ class Bill extends Model
         return $this->hasMany('App\Models\Expense\BillItem');
     }
 
+    public function itemTaxes()
+    {
+        return $this->hasMany('App\Models\Expense\BillItemTax');
+    }
+
     public function payments()
     {
         return $this->hasMany('App\Models\Expense\BillPayment');

app/Models/Expense/BillItem.php

@@ -29,6 +29,11 @@ class BillItem extends Model
         return $this->belongsTo('App\Models\Common\Item');
     }
 
+    public function itemTaxes()
+    {
+        return $this->hasMany('App\Models\Expense\BillItemTax', 'bill_item_id', 'id');
+    }
+
     public function tax()
     {
         return $this->belongsTo('App\Models\Setting\Tax');
@@ -66,4 +71,23 @@ class BillItem extends Model
     {
         $this->attributes['tax'] = (double) $value;
     }
+
+    /**
+     * Convert tax to double.
+     *
+     * @param  string  $value
+     * @return void
+     */
+    public function getTaxIdAttribute($value)
+    {
+        $tax_ids = [];
+
+        if (!empty($value)) {
+            $tax_ids[] = $value;
+
+            return $tax_ids;
+        }
+
+        return $this->itemTaxes->pluck('tax_id');
+    }
 }

app/Models/Expense/BillItemTax.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace App\Models\Expense;
+
+use App\Models\Model;
+use App\Traits\Currencies;
+
+class BillItemTax extends Model
+{
+
+    use Currencies;
+
+    protected $table = 'bill_item_taxes';
+
+    /**
+     * Attributes that should be mass-assignable.
+     *
+     * @var array
+     */
+    protected $fillable = ['company_id', 'bill_id', 'bill_item_id', 'tax_id', 'name', 'amount'];
+
+    public function bill()
+    {
+        return $this->belongsTo('App\Models\Expense\Bill');
+    }
+
+    public function item()
+    {
+        return $this->belongsTo('App\Models\Common\Item');
+    }
+
+    public function tax()
+    {
+        return $this->belongsTo('App\Models\Setting\Tax');
+    }
+
+    /**
+     * Convert amount to double.
+     *
+     * @param  string  $value
+     * @return void
+     */
+    public function setAmountAttribute($value)
+    {
+        $this->attributes['amount'] = (double) $value;
+    }
+}