phpvms/resources/views/admin/flights/flight_fields.blade.php

<div id="flight_fields_wrapper">
    <h3>custom fields</h3><br />
    <table class="table table-responsive" id="flight-fields-table">
        @if(count($flight->field_values))
        <thead>
        <th>Name</th>
        <th>Value</th>
        <th></th>
        </thead>
        @endif
        <tbody>
        @foreach($flight_fields as $field)
            @php
                $val_field = $flight->field_values->where('name', $field->name)->first();
            @endphp
            <tr>
                <td>{{ $field->name }}</td>
                <td>
                    <a class="inline" href="#" data-pk="{{ $val_field['id'] ?? '' }}" data-name="{{ $field->name }}">
                        {{ $val_field['value'] ?? '' }}
                    </a>
                </td>
                <td style="width: 10%; text-align: center;" class="form-inline">
                    {{ Form::open(['url' => '/admin/flights/'.$flight->id.'/fields',
                                    'method' => 'delete',
                                    'class' => 'pjax_form pjax_flight_fields'
                                    ]) }}
                    {{ Form::hidden('field_id', $val_field['id'] ?? null) }}
                    <div class='btn-group'>
                        {{ Form::button('<i class="fa fa-times"></i>',
                             ['type' => 'submit', 'class' => 'btn btn-sm btn-danger btn-icon',
                              'onclick' => "return confirm('Are you sure?')"]) }}
                    </div>
                    {{ Form::close() }}
                </td>
            </tr>
        @endforeach
        </tbody>
    </table>
    <hr/>
    <div class="row">
        <div class="col-md-12">
            <div class="text-right">
                {{ Form::open([
                    'url' => '/admin/flights/'.$flight->id.'/fields',
                    'method' => 'post',
                    'class' => 'pjax_form form-inline pjax_flight_fields'
                ])
                }}

                {{ Form::label('name', 'Name:') }}
                {{ Form::text('name', null, ['class' => 'form-control']) }}
                &nbsp;&nbsp;
                {{ Form::label('value', 'Value:') }}
                {{ Form::text('value', null, ['class' => 'form-control']) }}
                &nbsp;&nbsp;
                {{ Form::button('<i class="glyphicon glyphicon-plus"></i> add',
                                 ['type' => 'submit',
                                  'class' => 'btn btn-success btn-s']) }}
                <p class="text-danger">{{ $errors->first('name') }}</p>
                <p class="text-danger">{{ $errors->first('value') }}</p>
                {{ Form::close() }}
            </div>
        </div>
    </div>
</div>