多选验证
{% raw form.select_str_val %}
{{form.error_dict.get('select_str_val',"")}}
{% raw form.select_str_val_default %}
{{form.error_dict.get('select_str_val_default',"")}}
{% raw form.select_int_val %}
{{form.error_dict.get('select_int_val',"")}}
{% raw form.select_int_val_default %}
{{form.error_dict.get('select_int_val_default',"")}}