Codeigniter：如何使用表单验证正确重定向 [英] Codeigniter: How to redirect properly with form validation

问题描述

我知道如何做一个简单的形式w / o现有值，但我们假设我有一个视图，我可以通过 http://domain.com/account/settings 。让我们说，我有两个字段，用户名，密码和城市，这都是从DB（除了密码当然）。因此，如果用户尝试提交表单，并因任何原因验证失败，我应该在哪里重定向他们？现在，我有它显示相同的视图，但问题是，它从DB拉再次的信息。我应该创建两个不同的视图吗？

I understand how to do it w/ a plain form w/o existing values, but let's say I have a view that I can call via http://domain.com/account/settings. let's say I have two fields, username, password and city, which are all pulled from the DB (except for password of course). So, if a user tries to submit the form and fails validation for whatever reason, where should I "redirect" them to? Right now, I have it showing the same view but the problem is, it pulls the info from the DB again. Should I be creating two different views?

第二个视图本质上显示他们试图输入的信息w /错误消息。

The second view would essentially show the information they tried to enter along w/ the error message.

推荐答案

您不需要两个单独的视图。查看表单助手的功能 set_value（）， set_select（）， set_checkbox（）和 set_radio c $ c>。这些在提交和验证后重新填充表单。因此，在您的情况下，您应该以这种方式指定字段：

You do not need two separate views. Check out Form Helper's functions set_value(), set_select(), set_checkbox() and set_radio(). These re-populate form after its submission and validation. So in your case, you should specify the fields this way:

<input type="text"
       name="username"
       value="<?php echo set_value('username', $user['username']); ?>" />
<input type="text"
       name="city"
       value="<?php echo set_value('city', $user['city']); ?>" />

默认情况下，输入将有 $ user ['city'] value。但是验证失败后，将重新填充以前输入的值（包括不正确的值）。

By default, the input will have $user['city'] value. But after failed validation it will be re-populated with previously entered values (including incorrect ones).

请记住，您要重新填充的所有字段都需要传递通过 form_validation 库：

Just remember that all fields you want to re-populate need to be passed through form_validation library:

$this->form_validation->set_rules('username', 'Username', 'required');
$this->form_validation->set_rules('city', 'City', '');

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