CodeIgniter类库之Validation Class（续）

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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 ="" >
< div style ="padding:008px0;" >
< 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 ="validation->vist_name)?$this->validation->vist_name:'');?>" class ="inputtext" style ="width:140px" onblur ="this.className='inputtext';" onfocus ="this.className='activeinputtext';" />
< span >< font style ="color:red" > * font > span >
< input type ="button" class ="inputtext" value ="历史访客查询" style ="width:80px" />
td >
< td >< span class ="label" > 手机号码 span > td >
< td >< input type ="text" name ="vist_mobile" value ="validation->vist_mobile)?$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" > validation->set_select('vist_kind','客户');?>>客户 OPTION >
< OPTION VALUE ="VIP客户" > validation->set_select('vist_kind','VIP客户');?>>VIP客户 OPTION >
< OPTION VALUE ="总部人员" > validation->set_select('vist_kind','总部人员');?>>总部人员 OPTION >
< OPTION VALUE ="协作单位" > validation->set_select('vist_kind','协作单位');?>>协作单位 OPTION >
< OPTION VALUE ="供应商" > validation->set_select('vist_kind','供应商');?>>供应商 OPTION >
< OPTION VALUE ="承包商" > validation->set_select('vist_kind','承包商');?>>承包商 OPTION >
< OPTION VALUE ="政府人员" > validation->set_select('vist_kind','政府人员');?>>政府人员 OPTION >
< OPTION VALUE ="其他" > 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 ="validation->vist_date)?$this->validation->vist_date:'');?>" class ="inputtext" style ="width:140px" maxLength ="12" onblur ="this.className='inputtext';" onfocus ="this.className='activeinputtext';" />
< span >< font style ="color:red" > * font > span >
< input type ="button" class ="inputtext" value ="日期选择" style ="width:80px;" />
td >
< td >< span class ="label" > 来访人数 span > td >
< td >
< input type ="text" name ="vist_num" value ="validation->vist_num)?$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" > validation->set_checkbox('vist_workshop','1');?>style="margin:000-3px;"/> td >
tr >
< tr >
< td >< span class ="label" > 来访公司 span > td >
< td colspan ="5" >
< input type ="text" name ="vist_corp" value ="validation->vist_corp)?$this->validation->vist_corp:'');?>" class ="inputtext" style ="width:98%" onblur ="this.className='inputtext';" onfocus ="this.className='activeinputtext';" />
< span >< font style ="color:red" > * font > span >
td >
tr >
< tr >
< td >< span class ="label" > 来访事由 span > td >
< td colspan ="5" >
< input type ="text" name ="vist_reason" value ="validation->vist_reason)?$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 >
phpecho$this->validation->error_string; ?>
div >

< div style ="align:center;margin:20px000;" >
< input type ="submit" class ="submit" value ="确认预约" >                 
< input type ="reset" class ="submit" value ="清空重写" >

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。

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