为什么这些都需要在一个表单元素中,有什么特别的原因吗?如果您的数据设置正确,您可以简单地遍历它们并以某种有组织的方式创建元素。
function my_test_form($form_state) {
// Assuming you have your data in a format like this
$categories = array(
'cat1' => array(
'#title' => 'category 1',
'sub1' => 'Subcat1',
'sub2' => 'Subcat2',
),
'cat2' => array(
'#title' => 'category 2',
'sub21' => 'Subcat21',
'sub22' => 'Subcat22',
),
'cat3' => 'category 3',
);
$elements = array();
foreach ($categories as $cat => $data) {
// If multidimensional, create parent and loop through children
if (is_array($data)) {
$elements[] = array(
'#type' => 'checkbox',
'#title' => $data['#title'],
'#return_value' => $cat,
);
foreach (element_children($data) as $subcat) {
$elements[] = array(
'#type' => 'checkbox',
'#title' => $data[$subcat],
'#attributes' => array(
'style' => 'margin-left: 2em',
),
'#return_value' => $cat . '-' . $subcat,
);
}
}
// Else, just create top level
else {
$elements[] = array(
'#type' => 'checkbox',
'#title' => $data,
'#return_value' => $cat,
);
}
}
// Group all of these elements together. They'll be submitted into the same array.
$form['categories'] = $elements;
$form['categories']['#tree'] = TRUE;
$form['categories']['#prefix'] = '<div style="font-weight:bold" class="label">' . t('Checkboxes title') . ':</div>';
$form['submit'] = array(
'#value' => t('Submit me'),
'#type' => 'submit',
);
return $form;
}
function my_test_form_submit($form, &$form_state) {
$submitted_values = array_filter($form_state['values']['categories']);
}
呈现为:
提交表单时,假设选中了一些复选框,$submitted_values
如下所示:
array('cat2', 'cat2-sub21', 'cat2-sub22')
#return_value
您可以通过更改我在上面每个复选框上设置的属性来更改提交给提交处理程序的复选框的值。
提交的值被组合在一起,不仅因为它们都在该$form['categories']
部分内,而且还因为#tree
设置为TRUE
.