CodeIgniter类库之Validation Class（续）
在之前的一篇文章《CodeIgniter类库之Validation Class 》向大家介绍过CodeIgniter的Validation类库用法，但并不是很全面，现在对其进行部分补充。
Validation可以对提交的表单中的数据进行验证，当验证失败后会返回到表单让用户重新录入。当需要用户录入很多数据的时候，我们就希望能够的验证失败后，在表单中保留那些正确的数据，用户只要重新录入不符合验证规则的数据即可。
我们可以使用以下方法来解决这个问题（注意粗体字部分）。
<
form
method
="POST"
action
="<?php echo site_url('VisitManage/post_booking') ?>"
>
<
div
style
="padding: 0 0 8px 0;"
>
<
h3
>
来访者信息
</
h3
>
<
table
>
<
tr
>
<
td
><
span
class
="label"
>
访客姓名
</
span
></
td
>
<
td
>
<
input
type
="text"
name
="vist_name"
value
="<?php echo (isset($this->validation->vist_name)? $this->validation->vist_name : '');?>"
class
="inputtext"
style
="width: 140px"
onblur
="this.className='inputtext';"
onfocus
="this.className='activeinputtext';"
/>
<
span
><
font
style
="color:red"
>
*
</
font
></
span
>
<
input
type
="button"
class
="inputtext"
value
="历史访客查询"
style
="width: 80px"
/>
</
td
>
<
td
><
span
class
="label"
>
手机号码
</
span
></
td
>
<
td
><
input
type
="text"
name
="vist_mobile"
value
="<?php echo (isset($this->validation->vist_mobile)? $this->validation->vist_mobile : '');?>"
class
="inputtext"
style
="width: 140px"
maxLength
="11"
onblur
="this.className='inputtext';"
onfocus
="this.className='activeinputtext';"
/></
td
>
<
td
><
span
class
="label"
>
来访类型
</
span
></
td
>
<
td
>
<
SELECT
name
="vist_kind"
class
="inputtext"
style
="width: 140px"
>
<
OPTION
VALUE
="客户"
<?php echo $this-
>
validation->set_select('vist_kind', '客户'); ?> >客户
</
OPTION
>
<
OPTION
VALUE
="VIP客户"
<?php echo $this-
>
validation->set_select('vist_kind', 'VIP客户'); ?> >VIP客户
</
OPTION
>
<
OPTION
VALUE
="总部人员"
<?php echo $this-
>
validation->set_select('vist_kind', '总部人员'); ?> >总部人员
</
OPTION
>
<
OPTION
VALUE
="协作单位"
<?php echo $this-
>
validation->set_select('vist_kind', '协作单位'); ?> >协作单位
</
OPTION
>
<
OPTION
VALUE
="供应商"
<?php echo $this-
>
validation->set_select('vist_kind', '供应商'); ?> >供应商
</
OPTION
>
<
OPTION
VALUE
="承包商"
<?php echo $this-
>
validation->set_select('vist_kind', '承包商'); ?> >承包商
</
OPTION
>
<
OPTION
VALUE
="政府人员"
<?php echo $this-
>
validation->set_select('vist_kind', '政府人员'); ?> >政府人员
</
OPTION
>
<
OPTION
VALUE
="其他"
<?php echo $this-
>
validation->set_select('vist_kind', '其他'); ?> >其他
</
OPTION
>
</
SELECT
>
<
span
><
font
style
="color:red"
>
*
</
font
></
span
>
</
td
>
</
tr
>
<
tr
>
<
td
><
span
class
="label"
>
来访日期
</
span
></
td
>
<
td
>
<
input
type
="text"
name
="vist_date"
value
="<?php echo (isset($this->validation->vist_date)? $this->validation->vist_date : '');?>"
class
="inputtext"
style
="width: 140px"
maxLength
="12"
onblur
="this.className='inputtext';"
onfocus
="this.className='activeinputtext';"
/>
<
span
><
font
style
="color:red"
>
*
</
font
></
span
>
<
input
type
="button"
class
="inputtext"
value
="日期选择"
style
="width: 80px;"
/>
</
td
>
<
td
><
span
class
="label"
>
来访人数
</
span
></
td
>
<
td
>
<
input
type
="text"
name
="vist_num"
value
="<?php echo (isset($this->validation->vist_num)? $this->validation->vist_num : '');?>"
class
="inputtext"
style
="width: 140px"
onblur
="this.className='inputtext';"
onfocus
="this.className='activeinputtext';"
/>
<
span
><
font
style
="color:red"
>
*
</
font
></
span
>
</
td
>
<
td
><
span
class
="label"
>
进入车间
</
span
></
td
>
<
td
><
input
type
="checkbox"
name
="vist_workshop"
value
="1"
<?php echo $this-
>
validation->set_checkbox('vist_workshop', '1'); ?> style="margin: 0 0 0 -3px;" />
</
td
>
</
tr
>
<
tr
>
<
td
><
span
class
="label"
>
来访公司
</
span
></
td
>
<
td
colspan
="5"
>
<
input
type
="text"
name
="vist_corp"
value
="<?php echo (isset($this->validation->vist_corp)? $this->validation->vist_corp : '');?>"
class
="inputtext"
style
="width: 98%"
onblur
="this.className='inputtext';"
onfocus
="this.className='activeinputtext';"
/>
<
span
><
font
style
="color:red"
>
*
</
font
></
span
>
</
td
>
</
tr
>
<
tr
>
<
td
><
span
class
="label"
>
来访事由
</
span
></
td
>
<
td
colspan
="5"
>
<
input
type
="text"
name
="vist_reason"
value
="<?php echo (isset($this->validation->vist_reason)? $this->validation->vist_reason : '');?>"
class
="inputtext"
style
="width: 98%"
onblur
="this.className='inputtext';"
onfocus
="this.className='activeinputtext';"
/>
<
span
><
font
style
="color:red"
>
*
</
font
></
span
>
</
td
>
</
tr
>
<
tr
>
<
td
><
span
class
="label"
>
备
注
</
span
></
td
>
<
td
colspan
="5"
><
input
type
="text"
name
="vist_memo"
class
="inputtext"
style
="width: 98%"
onblur
="this.className='inputtext';"
onfocus
="this.className='activeinputtext';"
/></
td
>
</
tr
>
</
table
>
</
div
>
<
div
>
<?
php echo $this->validation->error_string;
?>
</
div
>
<
div
style
="align:center; margin: 20px 0 0 0; "
>
<
input
type
="submit"
class
="submit"
value
="确认预约"
>
<
input
type
="reset"
class
="submit"
value
="清空重写"
>
<!--
input type="button" class="submit" value="Return" onclick='javascript:history.back();'><br/
-->
</
div
>
</
form
>
针对Select、Radio和CheckBox字段可以使用Validation提供的set_select、set_radio和set_checkbox方法来设置已录入值。这三个方法都需要传入两个参数，第一个是页面元素的名称，第二个是选中状态的值。