Laravel - How to handle errors on PUT form? - validation

Question

I am working with laravel 5.2 and want to validate some data in an edit form. I goal should be to display the errors and keep the wrong data in the input fields.
My issue is that the input is validated by ContentRequest and the FormRequest returns
$this->redirector->to($this->getRedirectUrl())
->withInput($this->except($this->dontFlash))
->withErrors($errors, $this->errorBag);
which is fine so far. Next step the edit action in the controller is called and all parameters are overwritten.
What I have currently done:
ContentController:
public function edit($id)
{
$content = Content::find($id);
return view('contents.edit', ['content' => $content]);
}
public function update(ContentRequest $request, $id)
{
$content = Content::find($id);
foreach (array_keys(array_except($this->fields, ['content'])) as $field) {
$content->$field = $request->get($field);
}
$content->save();
return redirect(URL::route('manage.contents.edit', array('content' => $content->id)))
->withSuccess("Changes saved.");
}
ContentRequest:
class ContentRequest extends Request
{
public function authorize()
{
return true;
}
public function rules()
{
return [
'title' => 'required|min:3',
'body' => 'required|min:3'
];
}
}
How can I fix this? The form looks like this:
<form action="{!! URL::route('manage.contents.update', array('content' => $content->slug)) !!}"
id="site-form" class="form-horizontal" method="POST">
{!! method_field('PUT') !!}
{!! csrf_field() !!}
<div class="form-group {{ $errors->has('title') ? 'has-error' : '' }}">
<label for="title" class="col-sm-2 control-label">Title</label>
<div class="col-sm-10">
<input type="text" class="form-control" name="title" id="title" placeholder="Title"
value="{{ $content->title }}">
#if ($errors->has('title'))
<span class="help-block">
<strong>{{ $errors->first('title') }}</strong>
</span>
#endif
</div>
</div>
</form>

Answer 1

Try something like the following:
<input
type="text"
class="form-control"
name="title"
id="title"
placeholder="Title"
value="{{ old('title', $content->title) }}" />
Note the value attribute. Also check the documentation and find Retrieving Old Data.