应隐藏表单验证时的错误消息答案

【问题标题】：Error messages upon form validation should be hidden应隐藏表单验证时的错误消息
【发布时间】：2013-06-19 03:01:37
【问题描述】：

我有一个关于使用 codeigniter 进行表单验证的问题。用户按下“提交”按钮后，他们会收到预期的错误消息，但我也会收到错误消息（如下）。显示错误消息的值是隐藏的。我不相信这是罪魁祸首，因为我尝试了没有隐藏值的语法并且它不起作用。我究竟做错了什么？谢谢大家。

错误信息

A PHP Error was encountered
Severity: Notice
Message: Undefined variable: id
Filename: views/view_information.php
Line Number: 46
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: year
Filename: views/view_information.php
Line Number: 48
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: make
Filename: views/view_information.php
Line Number: 49
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: model
Filename: views/view_information.php
Line Number: 50

我的观点

<style type="text/css" media="screen">
    label{display: block}
</style>

<?php
    echo (isset($error)) ? $error : "";
    if(isset($carprices) && !is_null($carprices))
    {
        echo "Car# " . $carprices[0]->id . "<br />";
        foreach ($carprices as $prices)
        {
            echo 'ID Of Vehicle: '.$prices->id.'<br>';
            echo 'Year: '.$prices->year.'<br>';
            echo 'Make: '.$prices->make.'<br>';
            echo 'Model: '.$prices->model.'<br>';
            echo '<hr>';

            $id = $prices->id;
            $year = $prices->year;
            $make = $prices->make;
            $model = $prices->model;
            echo "$id".'<br>';
        }
    }

    /*
        foreach($updateprices as $row){
            $id = $row->id;
            $year = $row->year;
            $make = $row->make;
            $model = $row->model;
        }
    */

    echo form_open('site/form_validate_cars'); 
    echo validation_errors();

    $data = array(
        'cardescription_id'    => "$id",
        'caruser_id' => "5", // hard-coded in
        'year'  => "$year",
        'make'  => "$make",
        'model' => "$model"
    );

    echo form_hidden($data);

    echo form_label('Value:','value');

    $data = array(
        'name' => 'value',
        'id' => 'value',
        'value' => set_value('value')
    );

    echo form_input($data);

    // -----------------

    echo form_label('Exterior Color:','exterior_color');

    $data = array(
        'name' => 'exterior_color',
        'id' => 'exterior_color',
        'value' => set_value('exterior_color')
    );

    echo form_input($data);

    // -----------------

    echo form_label('Interior Color', 'interior_color');

    $data = array(
        'name' => 'interior_color',
        'id' => 'interior_color',
        'value' => set_value('interior_color')
    );

    echo form_input($data);

    // -----------------

    echo form_label('Mileage:','mileage');

    $data = array(
        'name' => 'mileage',
        'id' => 'mileage',
        'value' => set_value('mileage')
    );

    echo form_input($data);

    // -----------------
    // removed echo-only <tr>s on fuel type, state and transmission
    // -----------------

    echo form_label('State:','state');

    $data = array(
        'Texas' => 'Texas',
        'California' => 'California',
        'Florida' => 'Florida',
        'Nevada' => 'Nevada'
    );

    echo form_dropdown('State',$data,'California');
    echo '<br>';
    echo form_submit('SubmitDealerInfo','Submit!');
    echo form_close();
?>

【问题讨论】：

LINES 是哪个？

标签： php codeigniter validation

【解决方案1】：

不应该这样吗？

foreach ($carprices as $prices)
    {
       echo 'ID Of Vehicle: '.$prices['id'].'<br>';
       echo 'Year: '.$prices['year'].'<br>';
       echo 'Make: '.$prices['make'].'<br>';
       echo 'Model: '.$prices['model'].'<br>';
       echo '<hr>';

       $id = $prices['id'];
       $year = $prices['year'];
       $make = $prices['make'];
       $model = $prices['model'];
       echo "$id".'<br>';
    }

【讨论】：

【解决方案2】：

问题不在于 codeigniter 验证问题在于您的代码 1-检查您是否传递了所有变量以查看您的验证是否为假 2-检查您的输入名称是否与验证名称相同。

【讨论】：

这是问题的一部分。 $id,$year,$make,$model 是隐藏值。它们不被验证。当他们不应该首先看到它们时，我如何让用户验证这些值？请指教。感谢您的帮助。