php - Symfony2 - add attribute/class to single select option -


having form select field like:

$builder->add('foo', new choicetype, $this->defaults + [                 'choices'           => [/* choices key->value*/],             ]);

i add class of options, renders like:

<select>     <option value="1">foo</option>     <option value="2">bar</option>     <option value="3" class="showmodal">baz</option> </select>

how achieve it? important thing inside form type, not in template.

similar problem has been described: here, input field.


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