how to save image with other name in laravel 5.4

I am making CRUD operation in laravel 5.4. I am saving an image in database and storage. I did it, but it is not doing with random name. Means If image name is logo.jpg, I need some other random name of that image save in database and in folder also.

I tried it. But if I save two different image with same name then it replace with new one.

My web.php is:

Route::resource('todo','todocontroller');

My todocontroller.php is:

<?php

namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\todo;

class todocontroller extends Controller
{

 public function create()
{
    return view('todo.create');
}
    /**
 * Store a newly created resource in storage.
 *
 * @param  \Illuminate\Http\Request  $request
 * @return \Illuminate\Http\Response
 */
public function store(Request $request)
{
    $todo = new todo;
    $this->validate($request,[
        'title' => 'required|unique:todos',
        'file' => 'image|mimes:jpeg,png,jpg,gif',
        'body' => 'required',

    ],
    [
        'title.required' => 'Title can not be empty',
        'unique' => 'Already inserted. Please try another.',
        'file.image' => 'Upload only JPEG OR PNG',
        'body.required' => 'Body can not be empty',
    ]);

    if ($request->hasFile('file')) {
        $images = $request->file->getClientOriginalName();
        $request->file->storeAs('public/images',$images);
        $todo->image = $images;
    }

    $todo->title = $request->title;

    $todo->body = $request->body;
    $todo->save();
    session()->flash('message','Inserted Successfully');
    return redirect('todo');
 }
}

My create.blade.php is:

@extends('layout.app')

@section('body')
<br>
<a href="../todo" class="btn btn-info">Back</a>
    <h1>Create new item</h1><br>
    <form action="../todo"  method="POST" enctype="multipart/form-data">
        
        <input type="text" name="title" value="" placeholder="title">
        <br>
        <input type="file" name="file" placeholder="Image">
        <br>
        <textarea rows="5" name="body" placeholder="body"></textarea>
        <button type="submit">Submit</button>

    </form>

</div>

@endsection

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