Disable Button if Variants are empty - php

Question

So I have this forelse that displays all the variants, now what I want to happen is that, if there is no variant. the submit button will be disabled.
<table class="table table-striped">
<thead>
<tr>
<th class="col-sm-5">Name</th>
<th class="col-sm-1">Default?</th>
<th class="col-sm-2 text-right">Retail Price</th>
<th class="col-sm-2 text-right">Quantity</th>
<th class="col-sm-2"></th>
</tr>
</thead>
<tbody>
#forelse ($product->variants as $index => $variant)
<tr>
<td>{{ $variant->name }}</td>
<td>{{ $variant->is_default ? 'Yes' : 'No' }}</td>
<td class="text-right">{{ number_format($variant->retail_price, 2) }} {{ $variant->price_currency }}</td>
<td class="text-right">{{ number_format($variant->quantity, 0) }}</td>
<td>Edit</td>
</tr>
#empty
<tr>
<td colspan="5">No variants found</td>
<?php $varbutton = 'disabled';?>
</tr>
#endforelse
</tbody>
</table>
here is the button
<div class="panel-footer">
<button class="btn btn-default" type="submit"<?php $varbutton; ?>>Update Store</button>
</div>
Is it possible using php and html in the blade alone or do I have to do it in the controller?

Answer 1

You should be using blade in your button:
<div class="panel-footer">
<button class="btn btn-default" type="submit" {{ $varbutton }}>Update Store</button>
</div>
Also please note that there needs to be a space after "submit".
Or, if you don't want that space when the button is not disabled, use:
<?php $varbutton = ' disabled';?>
<div class="panel-footer">
<button class="btn btn-default" type="submit"{{ $varbutton }}>Update Store</button>
</div>