add model,controller,migration,api

app/Http/Controllers/RateController.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Rate;
+use Illuminate\Http\Request;
+
+class RateController extends Controller
+{
+    public function index()
+    {
+        return Rate::all();
+    }
+
+    public function show(Rate $rate)
+    {
+        return $rate;
+    }
+
+    public function store(Request $request)
+    {
+        $rate = Rate::create($request->all());
+
+        return response()->json($rate, 201);
+    }
+
+    public function update(Request $request, Rate $rate)
+    {
+        $rate->update($request->all());
+
+        return response()->json($rate, 200);
+    }
+
+    public function delete(Rate $rate)
+    {
+        $rate->delete();
+
+        return response()->json(null, 204);
+    }
+}