Feat: Adds multi currency support (#88)

app/Traits/HasMarketData.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Traits;
+
+use App\Models\MarketData;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+
+trait HasMarketData
+{
+    /**
+     * Related market data for model
+     *
+     * @return void
+     */
+    public function market_data(): HasOne
+    {
+        return $this->hasOne(MarketData::class, 'symbol', 'symbol');
+    }
+
+    /**
+     * Gracefully loads related market data as relationship (creates if doesn't exist)
+     */
+    public function loadMarketData(): void
+    {
+        if (is_null($this->market_data)) {
+
+            $this->setRelation('market_data', MarketData::getMarketData($this->attributes['symbol']));
+        }
+    }
+
+    public function scopeNotBaseCurrency($query): void
+    {
+        $query->with('market_data')
+            ->whereRelation(
+                'market_data',
+                'currency',
+                '!=',
+                config('investbrain.base_currency')
+            );
+    }
+}