Handle Form forms gracefully in Laravel

When developing Laravel applications, it usually involves form processing. Regarding how to elegantly process and reuse Laravel's Form forms, the following is a small life experience:

Use Form Package

Although writing native HTML code is indeed more readable, in fact Form Package will still bring us a lot of convenience, such as using Form::model() and Form::select().

Imagine an example: we need to add or update a user's username

We can design a code and directory structure similar to this:

// 位于 resources/views/users/edit.blade.php
{!! Form::model($user, ['route' => ['users.update', $user->id], 'method' => 'put']) !!}
    @include('users._form')
    // Your cancel / update buttons
{!! Form::close() !!}
// 位于 resources/views/users/_form.blade.php
<div class="form-group">
    {!! Form::label(&#39;name&#39;, &#39;Name&#39;) !!}
    {!! Form::text(&#39;name&#39;) !!}
</div>

The HTML generated by the above Form The code probably looks like this:

<form method="POST" action="http://example.com/users/1" accept-charset="UTF-8">
    <input name="_token" type="hidden" value="Q5oILhAr92pVqfE0ZSSXjSdJuUi09DVSPWweHQlq">
    <input name="_method" type="hidden" value="PUT">
    <div class="form-group"> 
        <label for="name">Name</label>
        <input name="name" type="text" value="Michael">
    </div>
</form>

Note that in the Form::model() method, we pass the $user variable, which means: if $user has a value of the name attribute, the form will This value is automatically filled in without us having to write it manually.

The second point is that since we are passing $user to Form::model(), we can use this little trick in the controller:

class UserController extends Controller
{
    public function create()
    {
        return view('users.create', ['user' => new User]);
    }
    public function edit(User $user)
    {
        return view('users.edit', ['user' => $user]);
    }
}

In this case, you There will be no conflict when editing and adding. There is a name value when editing and updating, but there is no need for a name value when adding. So we can write the entire Form like this:

// 位于 resources/views/users/_form.blade.php
<div class="form-group">
    <label for="name">Name</label>
    <input type="text" name="name" value="{{ old(&#39;name&#39;, $user->name) }}" class="form-control">
</div>

And you’re done!

Finally

It’s still the same sentence: You can still consider Form Package when processing forms, especially when you are processing Form Package.

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