Missing required parameters for route (Laravel 5.8) - laravel

Question

I'm trying to recreate a blog application form old laravel version in new version (5.8). In old version, I used laravel collective for forms, and my edit post form looks like this:
#extends('layouts.app')
#section('content')
<h1>Edit Post</h1>
{!! Form::open(['action' => ['PostsController#update', $post->id], 'method' => 'POST', 'enctype' => 'multipart/form-data']) !!}
<div class="form-group">
{{Form::label('title', 'Title')}}
{{Form::text('title', $post->title, ['class' => 'form-control', 'placeholder' => 'Title'])}}
</div>
<div class="form-group">
{{Form::label('body', 'Body')}}
{{Form::textarea('body', $post->body, ['class' => 'form-control', 'placeholder' => 'Body Text'])}}
</div>
{{Form::hidden('_method', 'PUT')}}
{{Form::submit('Submit', ['class'=>'btn btn-primary'])}}
{!! Form::close() !!}
#endsection
Now I'm trying to recreate the same form without laravel collective forms because it seems to be deprecated.
This is my attempt at recreating this form:
#extends('layouts.app')
#section('content')
<h1>Edit post</h1>
<form action="{{ route('posts.update'), $post->id }}" method="POST">
#csrf
<div class="form-group">
<label for="title">Title</label>
<input class="form-control" type="text" id="title" name="title" value={{$post->title}}>
</div>
<div class="form-group">
<label for="body">Body</label>
<textarea class="form-control" id="body" rows="3" name="body" value={{$post->body}}></textarea>
</div>
<input type="submit" class="btn btn-primary">
</form>
#endsection
I'm getting the following error:
Missing required parameters for [Route: posts.update] [URI: posts/{post}]. (View: C:\xampp\htdocs\blog\resources\views\posts\edit.blade.php)
Looks like I'm not sending the id parameter correctly.
Also,how can I recreate this part: {{Form::hidden('_method', 'PUT')}} in plain HTML?

Answer 1

You can recreate the method input with this:
#method('PUT')
You need to put the $post->id inside the route() and use the Form method Spoofing (#method('PUT')). Try this:
#extends('layouts.app')
#section('content')
<h1>Edit post</h1>
<form action="{{ route('posts.update', $post->id) }}" method="POST">
#csrf
#method('PUT')
<div class="form-group">
<label for="title">Title</label>
<input class="form-control" type="text" id="title" name="title" value={{$post->title}}>
</div>
<div class="form-group">
<label for="body">Body</label>
<textarea class="form-control" id="body" rows="3" name="body" value={{$post->body}}></textarea>
</div>
<input type="submit" class="btn btn-primary">
</form>
#endsection

Answer 2

Your error is caused by $post->id being outside of the route() function.
Change:
route('posts.update'), $post->id
to:
route('posts.update', $post)
As for the second question, this is how Form::hidden('_method', 'PUT') is rendered as HTML:
<input type="hidden" name="_method" value="PUT">
But you can use #method if you prefer a shorter way of writing it:
<form action="{{ route('posts.update', $post) }}" method="POST">
#method('PUT')
#csrf
...
</form>