First basic code for currency exchange rate routines.

database/migrations/2017_04_13_163623_changes_for_v440.php

@@ -0,0 +1,51 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+
+/**
+ * Class ChangesForV440
+ */
+class ChangesForV440 extends Migration
+{
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        if (Schema::hasTable('currency_exchange_rates')) {
+            Schema::drop('currency_exchange_rates');
+        }
+    }
+
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        if (!Schema::hasTable('currency_exchange_rates')) {
+            Schema::create(
+                'currency_exchange_rates', function (Blueprint $table) {
+                $table->increments('id');
+                $table->timestamps();
+                $table->softDeletes();
+                $table->integer('user_id', false, true);
+                $table->integer('from_currency_id', false, true);
+                $table->integer('to_currency_id', false, true);
+                $table->date('date');
+                $table->decimal('rate', 22, 12);
+                $table->decimal('user_rate', 22, 12)->nullable();
+
+                $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
+                $table->foreign('from_currency_id')->references('id')->on('transaction_currencies')->onDelete('cascade');
+                $table->foreign('to_currency_id')->references('id')->on('transaction_currencies')->onDelete('cascade');
+            }
+            );
+        }
+
+    }
+}