我有以下观点,但set_value如果没有它默认为请选择,我该如何申请？
<label for="add_fields_type">Type: </label>
<select name="add_fields_type" id="add_fields_type">
<option value="">Please Select</option>
<option value="<?php echo set_value('input'); ?>">Input</option>
<option value="<?php echo set_value('textarea'); ?>">Text Area</option>
<option value="<?php echo set_value('radiobutton'); ?>">Radio Button</option>
<option value="<?php echo set_value('checkbox'); ?>">Check Box</option>
</select>
更新:
视图:
<label for="add_fields_placeholder">Placeholder: </label>
<select name="add_fields_placeholder" id="add_fields_placeholder">
<option value="">Please Select</option>
<option value="<?php echo set_value('yes'<?php echo set_select('add_fields_placeholder','yes', ( !empty($placeholderType) && $placeholderType == "yes" ? TRUE : FALSE ));?>">Yes</option>
<option value="<?php echo set_value('no' <?php echo set_select('add_fields_placeholder','no', ( !empty($placeholderType) && $placeholderType == "no" ? TRUE : FALSE )); ?>">No</option>
</select>
<label for="add_fields_placeholderValue">Placeholder Text: </label>
<input type="text" name="add_fields_placeholderValue" id="add_fields_placeholderValue" value="<?php echo set_value('add_fields_placeholderValue'); ?>">
<label for="add_fields_type">Type: </label>
<select name="add_fields_type" id="add_fields_type">
<option value="">Please Select</option>
<option value="input" <?php echo set_select('add_fields_type','input', ( !empty($fieldType) && $fieldType == "input" ? TRUE : FALSE )); ?>>Input</option>
<option value="textarea" <?php echo set_select('add_fields_type','textarea', ( !empty($fieldType) && $fieldType == "textarea" ? TRUE : FALSE )); ?>>Text Area</option>
<option value="radiobutton" <?php echo set_select('add_fields_type','radiobutton', ( !empty($fieldType) && $fieldType == "radiobutton" ? TRUE : FALSE )); ?>>Radio Button</option>
<option value="checkbox" <?php echo set_select('add_fields_type','checkbox', ( !empty($data) && $data == "checkbox" ? TRUE : FALSE )); ?>>Check Box</option>
</select>
控制器:
$data['fieldType'] = $this->input->get('add_fields_type');
$data['placeholderType'] = $this->input->get('add_fields_placeholder');
第16行:
<option value="<?php echo set_value('yes'<?php echo set_select('add_fields_placeholder','yes', ( !empty($placeholderType) && $placeholderType == "yes" ? TRUE : FALSE ));?>">Yes</option>
这应该有所帮助:
控制器(test.php)
<?php
class Setup extends CI_Controller {
function index() {
//for the set_select() function
$this->load->library('form_validation');
//for base_url() function
$this->load->helper('url');
$list['data'] = $this->input->get('add_fields_type');
$this->load->view('test_view.php', $list);
}
?>
查看(test_view.php)
<!DOCTYPE HTML>
<html>
<body>
<form action="<?php echo base_url(); ?>test">
<label for="add_fields_type">Type: </label>
<select name="add_fields_type" id="add_fields_type">
<option value="">Please Select</option>
<option value="input" <?php echo set_select('add_fields_type','input', ( !empty($data) && $data == "input" ? TRUE : FALSE )); ?>>Input</option>
<option value="textarea" <?php echo set_select('add_fields_type','textarea', ( !empty($data) && $data == "textarea" ? TRUE : FALSE )); ?>>Text Area</option>
<option value="radiobutton" <?php echo set_select('add_fields_type','radiobutton', ( !empty($data) && $data == "radiobutton" ? TRUE : FALSE )); ?>>Radio Button</option>
<option value="checkbox" <?php echo set_select('add_fields_type','checkbox', ( !empty($data) && $data == "checkbox" ? TRUE : FALSE )); ?>>Check Box</option>
</select>
<input type="submit" />
</form>
</body>
</html>
注意:第三个参数set_select()确定是否应该选择它
就像阿比德所说的那样，在表单验证之后，您只需使用set_value（）即可。
form_dropdown('add_fields_type', $field_types, set_value('field_type'));