我有以下视图,但如何将set_value应用于它而不将其默认为Please select？
<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'] = $this->input->get('add_fields_placeholder');
第16行：
<option value="<?PHP echo set_value('yes'<?PHP echo set_select('add_fields_placeholder',( !empty($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',( !empty($data) && $data == "input" ? TRUE : FALSE )); ?>>Input</option>
<option value="textarea" <?PHP echo set_select('add_fields_type',( !empty($data) && $data == "textarea" ? TRUE : FALSE )); ?>>Text Area</option>
<option value="radiobutton" <?PHP echo set_select('add_fields_type',( !empty($data) && $data == "radiobutton" ? TRUE : FALSE )); ?>>Radio Button</option>
<option value="checkBox" <?PHP echo set_select('add_fields_type',( !empty($data) && $data == "checkBox" ? TRUE : FALSE )); ?>>Check Box</option>
</select>
<input type="submit" />
</form>
</body>
</html>
注意：set_select()的第三个参数确定是否应该选择它