change

app/Classes/ValueObjects/Constants/CurrencyType.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace App\Classes\ValueObjects\Constants;
+
+final class CurrencyType {
+    public const CASH = 1;
+    public const CHEQUE = 2;
+    public const PA = 3;
+}

app/CurrencyRate.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class CurrencyRate extends Model
+{
+    //
+}

app/CurrencyRateLog.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class CurrencyRateLog extends Model
+{
+    //
+}

database/migrations/2020_12_28_133342_create_currency_rates_table.php

@@ -0,0 +1,37 @@
+<?php
+
+use App\Classes\ValueObjects\Constants\CurrencyType;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateCurrencyRatesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('currency_rates', function (Blueprint $table) {
+            $table->id();
+            $table->bigInteger('currency_id')->unsigned()->nullable();
+            $table->foreign('currency_id')->references('id')->on('currencies')->onDelete('cascade');
+            $table->decimal('selling', 20, 5)->nullable();
+            $table->integer('currency_type')->default(CurrencyType::CASH);
+            $table->timestamps();
+            $table->softDeletes();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('currency_rates');
+    }
+}

database/migrations/2020_12_28_133406_create_currency_rate_logs_table.php

@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateCurrencyRateLogsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('currency_rate_logs', function (Blueprint $table) {
+            $table->id();
+            $table->bigInteger('currency_rate_id')->unsigned()->nullable();
+            $table->foreign('currency_rate_id')->references('id')->on('currency_rates')->onDelete('cascade');
+            $table->decimal('selling', 20, 5)->nullable();
+            $table->bigInteger('created_by')->unsigned()->nullable();
+            $table->foreign('created_by')->references('id')->on('users')->onDelete('cascade');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('currency_rate_logs');
+    }
+}