osb/resources/views/theme/backend/adminlte/a/product/widgets/detail.blade.php

<!-- $o = Product::class -->
<div class="row">
	<div class="col-12">
		<h3>Product Details</h3>
		<hr>
		@if(session()->has('success'))
			<span class="ml-3 pt-0 pb-0 pr-1 pl-1 btn btn-outline-success"><small>{{ session()->get('success') }}</small></span>
		@endif

		<form class="g-0 needs-validation" method="POST" enctype="multipart/form-data" role="form">
			@csrf

			<div class="row">
				<div class="col-4">
					<div class="row">
						<!-- Product Name -->
						<div class="col-9">
							<div class="form-group has-validation">
								<label for="name">Product Name</label>
								<input type="text" class="form-control form-control-border @error('description.name') is-invalid @enderror" id="name" name="description[name]" placeholder="Product Name" value="{{ old('description.name',$o->name) }}" required>
								<span class="invalid-feedback" role="alert">
									@error('description.name')
										{{ $message }}
									@else
										Product Name required.
									@enderror
								</span>
							</div>
						</div>

						<!-- Product Active -->
						<div class="col-3">
							<div class="form-group">
								<div class="custom-control custom-switch custom-switch-off-danger custom-switch-on-success">
									<input type="checkbox" class="custom-control-input" id="active" name="active" {{ old('active',$o->active) ? 'checked' : '' }}>
									<label class="custom-control-label" for="active">Active</label>
								</div>
							</div>
						</div>
					</div>
				</div>
			</div>

			<div class="row">
				<!-- Product Type -->
				<div class="col-4">
					<div class="form-group has-validation">
						<label for="name">Product Type</label>
						<select class="form-control form-control-border" id="model" name="model">
							<option value=""></option>
							@foreach($o->availableTypes() as $type)
								<option value="{{ $type }}" @if($o->type && ($type == get_class($o->type)))selected @endif>{{ $type }}</option>
							@endforeach
						</select>
						<span class="invalid-feedback" role="alert">
							@error('model')
								{{ $message }}
							@else
								Product Type required.
							@enderror
						</span>
					</div>
				</div>
			</div>

			<div class="row">
				<!-- Supplied Product -->
				<div class="col-4" id="supplier_product">
					<div class="form-group has-validation">
						<label for="name">Supplied Product</label>
						<select class="form-control form-control-border" id="model_id" name="model_id">
						</select>
						<span class="invalid-feedback" role="alert">
							@error('model_id')
								{{ $message }}
							@else
								Supplied Product required.
							@enderror
						</span>
					</div>
				</div>
			</div>

			<div class="row">
				<!-- Buttons -->
				<div class="col-12">
					<a href="{{ url('/home') }}" class="btn btn-danger">Cancel</a>
					@can('wholesaler')
						<button type="submit" name="submit" class="btn btn-success mr-0 float-right">@if ($o->exists)Save @else Add @endif</button>
					@endcan
				</div>
			</div>
		</form>
	</div>
</div>

@section('page-scripts')
	@css(select2)
	@js(select2,autofocus)

	<script type="text/javascript">
		// Get a list of supplier items matching this type to populate model_id
		function supplier_products(type,destination,selected) {
			destination.prop('disabled',true);

			$.ajax({
				type: 'GET',
				dataType: 'json',
				data: {type: type},
				cache: false,
				url: '{{ url('api/a/supplier_products') }}',
				timeout: 2000,
				error: function(x) {
					// @todo add a spinner
					//spinner.toggleClass('d-none').toggleClass('fa-spin');
					alert('Failed to submit');
				},
				success: function(data) {
					destination
						.empty()
						.append($('<option>'))
						.append(data.map(function(item,key) {
							return new Option(item.name,item.id,selected && selected==item.id,selected && selected==item.id);
						}))
						.prop('disabled',false);
				}
			});
		}

		$(document).ready(function() {
			$('#model').select2()
				.on('change',function(item) {
					if ($(this).val()) {
						$('#supplier_product').show();



						supplier_products($(this).val(),$('#model_id'));

					} else {
						$('#supplier_product').hide();
					}
				});

			$('#model_id').select2();

			// After we render the page, hide the supplier_product if this product has no model.
			// We do this here, because adding d-none to the div results in the select2 input not presenting correctly
			if (! $('#model').val())
				$('#supplier_product').hide();
			else
				supplier_products($('#model').val(),$('#model_id'),{{ old('model_id',$o->model_id) }});
		});
	</script>
@endsection