Question

如何在表单的下拉选择框中添加“请选择一个选项”作为默认显示选项。

我正在修改magento模块，在前端添加一些新的输入恶魔，将其保存到magento数据库中的表中。表单正确地将信息保存到数据库，但它始终显示用于列出选项的数组中的第1项。因此，如果用户改变了该选项，则数组[0]将被添加到数据库中。我想添加一个不会添加到数据库的占位符，因此它会提示用户选择一个选项。

这是所谓的信息：

$fields[] = array(
        'name'     => 'vehicle_make',
        'label'    => Mage::helper('sublogin')->__('Make'),
        'required' => true,
        'type'     => 'select',
        'style'    => 'width:100px',
        'cssclass' => '',
        'options'  => array ("Acura", "Alfa Romeo","Audi", "BMW", "Buickm", "Cadillac", "Chevrolet", "Chrysler", "Dodge", "FIAT", "Ford", "GMC", "Honda", "Hyundai", "Infiniti", "Jaguar", "Jeep", "Kia", "Land Rover", "Lexus", "Lincoln", "Maserati", "Mazda", "Mercedes-Benz", "MINI", "Mitsubishi", "Nissan", "Porsche", "Ram", "Scion", "Smart", "Subaru", "Suzuki", "Toyota", "Volkswagen", "Volvo", "Yamaha"),
    );

这是用于显示输入字段的内容：

if ($formField['type'] == 'select' || $formField['type'] == 'multiselect')
                    {
                        $selectedOptions = $sublogin->getData($formField['name']);
                        $selectedOptions = explode(',', $selectedOptions);
                        ?>
                        <select 
                            <?php echo ($formField['type'] == 'multiselect')?"multiple=multiple":""; ?> 
                            id="<?php echo $formField['name'] ?>" 
                            name="<?php echo ($formField['type'] == 'multiselect')? $formField['name'].'[]':$formField['name'] ?>">
                        <?php foreach ($formField['options'] as $optionValue => $optionLabel) {
                            $selected = '';
                            if (in_array($optionValue, $selectedOptions))
                                $selected = 'selected';                             

                            echo '<option '.$selected.' value="'.$optionValue.'">'.$optionLabel.'</option>';
                        } ?>
                        </select>

vehicle make

Answer 1

在上面的代码中

<select 
                            <?php echo ($formField['type'] == 'multiselect')?"multiple=multiple":""; ?> 
                            id="<?php echo $formField['name'] ?>" 
                            name="<?php echo ($formField['type'] == 'multiselect')? $formField['name'].'[]':$formField['name'] ?>">
                        <?php foreach ($formField['options'] as $optionValue => $optionLabel) {
                            $selected = '';
                            if (in_array($optionValue, $selectedOptions))
                                $selected = 'selected';                             

                            echo '<option '.$selected.' value="'.$optionValue.'">'.$optionLabel.'</option>';
                        } ?>
                        </select>

在foreach之前添加默认选项

<select 
                            <?php echo ($formField['type'] == 'multiselect')?"multiple=multiple":""; ?> 
                            id="<?php echo $formField['name'] ?>" 
                            name="<?php echo ($formField['type'] == 'multiselect')? $formField['name'].'[]':$formField['name'] ?>">
//added this line of code
                            <option name="please-select" value="100">Please select an option</option>
                        <?php foreach ($formField['options'] as $optionValue => $optionLabel) {
                            $selected = '';
                            if (in_array($optionValue, $selectedOptions))
                                $selected = 'selected';                             

                            echo '<option '.$selected.' value="'.$optionValue.'">'.$optionLabel.'</option>';
                        } ?>
                        </select>

您可以为此使用任何值和名称。现在使用可以使用javascript来验证它。

希望这有帮助。

表格下拉选择类型的占位符？

1 个答案: