订餐表单例子

{
    $form['order'] = array(
        '#type' => 'fieldset',
        '#title' => '订餐：' . $node->title,
    );

    $form['order']['order_qty'] = array(
        '#type' => 'textfield',
        '#title' => '数量',
        '#maxlength' => 3,
        '#size' => 10,
        '#default_value' => 1,
    );

    $form['order']['ship_address'] = array(
        '#type' => 'textfield',
        '#title' => '送餐地址',
    );

    $form['order']['ship_phone'] = array(
        '#type' => 'textfield',
        '#title' => '联系电话',
    );

    $form['order']['memo'] = array(
        '#type' => 'textarea',
        '#title' => '备注',
    );
    $form['order']['submit'] = array('#type' => 'submit', '#value' => '下订单');

    $form['food_nid'] = array('#type' => 'value', '#value' => $node->nid);

    return $form;
}


function food_order_form_validate($form, &$form_state) {
    if (!is_numeric($form_state['values']['order_qty'])) { // 如果用户输入了非数字，则报错
        form_set_error('order_qty', '请输入整数！');
    }

    if ($form_state['values']['order_qty'] <= 0)
    {
        form_set_error('order_qty', '订餐数量不能小于0！'); // 如果用户输入的数量小于或等于零，则报错
    }
}

function food_order_form_submit($form, &$form_state) {

    $node = (object)$node; //创建空节点对象
    $node->uid = 1; // 创建订单者统一设为超级管理员
    $node->type = 'food_order'; //节点类型为“订单”
    $node->title = time();  // 订单号为当前时间戳
    $node->body = $form_state['values']['memo']; // 记录客户的特殊要求
    $node->field_food_nid[0]['nid'] = $form_state['values']['food_nid']; //记录客户所订餐的编号
    $node->field_qty[0]['value'] = $form_state['values']['order_qty']; //记录客户订餐数量
    $node->field_phone[0]['value'] = $form_state['values']['ship_phone']; //联系电话
    $node->field_ship_address[0]['value'] = $form_state['values']['ship_address']; //送餐地址

    node_save($node);

    if ($node->nid)
    {
        drupal_set_message('订餐成功！您的订单号是：' . l($node->title, 'node/' . $node->nid) . ',点击查看');
    }
    else
    {
        drupal_set_message('订餐失败！请重新下订单。', 'error');
    }
}