Question

我有冗长的搜索表单，我正在尝试将表单值保留在会话中。我使用codeigniter分页，所以我需要将在搜索表单中输入的值存储在会话中（我试图避免将它们存储在数据库中）

这个问题困扰了我几天，我无法解决它。这是代码。为了澄清，我为我的代码的每一行提供了注释：

    // my submit button named search_button has been clicked
if ($this->input->post('search_button')) {

    // all the values from the form are stored in array
    $formValues = $this->input->post(NULL, TRUE);

    // i assign the values of $formValues array to session
    $this->session->set_userdata('formValues', $formValues);

    // i store the values in local variable
    $mySessData = $this->session->userdata('formValues');

    // i count the values of the $formValues to be sure how many fields i get back
    // reason for that is that my form is built dynamically
    // returns 19 if the form has been submitted. 
    // when i submit the form, i get 19
    echo "Count of form values is now: " . count($formValues);

    // i print the $formValues array, to be sure that it return the form values
    // and yes, it does if the form has been submitted.
    // see the $formValues returns section bellow to see what is returned
    echo "<pre>";
    print_r($formValues);
    echo "</pre>";

    // i print my local variable to ensure that variable $mySessData is not empty
    // see the section $mySessData retruns (1) to see returned values
    echo "Confirm that sess data has been set up";
    echo "<pre>";
    print_r($mySessData);
    echo "</pre>";
} else {

    // else, means that form has not been submitted but that controller has been called from the next link
    // in the pagination links. This always return empty array, that is nothing...
    echo "<pre>";
    print_r($mySessData);
    echo "</pre>";
}

如果表单已提交，$ formValues将返回以下内容：

Array
(
    [addtypeid] => 
    [isnew] => 
    [orderby] => 
    [geographicareaid] => 
    [catid] => 1
    [catid2] => 
    [manufacturerid] => 
    [modelid] => 
    [yearofmanufacturing_from] => 
    [yearofmanufacturing_to] => 
    [hoursused_from] => 
    [hoursused_to] => 
    [horsepowers_from] => 
    [horsepowers_to] => 
    [price_from] => 
    [price_to] => 
    [colorid] => 
    [isdamaged] => 
    [search_button] => Submit‚
)

我的变量$ mySessData返回表单已提交的相同数据：

Array
(
    [addtypeid] => 
    [isnew] => 
    [orderby] => 
    [geographicareaid] => 
    [catid] => 1
    [catid2] => 
    [manufacturerid] => 
    [modelid] => 
    [yearofmanufacturing_from] => 
    [yearofmanufacturing_to] => 
    [hoursused_from] => 
    [hoursused_to] => 
    [horsepowers_from] => 
    [horsepowers_to] => 
    [price_from] => 
    [price_to] => 
    [colorid] => 
    [isdamaged] => 
    [search_button] => Submit‚
)

最后，如果我点击分页链接

 $config['base_url'] = site_url('/searchresults/display/'.$limit.'/');

，指向相同的控制器和相同的方法，很好......我得到一个空数组。

任何帮助将不胜感激。

问候，约翰

Answer 1

我认为如果在表单中使用method =“get”会更好。在搜索表单的情况下，使用get而不是post发布表单更为可取，因为您不需要维护任何会话，也不需要在数据库中存储值。你可以随时使用

轻松访问一个游戏

$this ->input->get('fild_name');

您可以通过这种方式优化代码，而不需要维护会话变量，因为您的网址中始终会有搜索结果。使用会话另一个问题是取消设置会话变量。

我个人认为创建一个会话变量只是为了保持分页不是一个好主意。而且在搜索表单中不需要安全性，所以你可以使用“get”insted“post”发送你的表单

codeigniter会话值在第二页丢失

1 个答案: