blocks|key|866033|text|你只需从你的控制器中回音validation_errors()。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|866034|让您的javascript+place它在您的视图。|866035|PHP|866036|//+controller+code
if+($this->form_validation->run()+===+TRUE)
{
++++//save+stuff
}
else
{
++++echo+validation_errors();
}|code-block|syntax|javascript|866037|Javascript|866038|//+jquery
$.post(<?php+site_url('controller/method')?>,+function(data)+{
++$('.errors').html(data);
});|866039|如果您真的想使用JSON，jquery会自动解析JSON。您可以遍历它并将append循环到html中。|866040|如果需要将验证错误作为数组，可以将此函数附加到form_helper.php中。|866041|if+(!function_exists('validation_errors_array'))+{

+++function+validation_errors_array($prefix+=+'',+$suffix+=+'')+{
++++++if+(FALSE+===+($OBJ+=+&+_get_validation_object()))+{
++++++++return+'';
++++++}

++++++return+$OBJ->error_array($prefix,+$suffix);
+++}
}|866042|entityMap^0|C|J|0|E|5|0|0|0|0|0|11|6|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|16|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|17|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|18|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|19|8|@]|D|@]|E|$M|N]]|$1|S|3|T|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|U|3|V|5|6|7|1D|8|@]|D|@]|E|$]]|$1|W|3|X|5|L|7|1E|8|@]|D|@]|E|$M|N]]|$1|Y|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|Z|$]]

You just echo <code>validation_errors()</code> from your controller.

have your javascript <code>place</code> it in your view.

PHP

<pre><code>// controller code
if ($this-&gt;form_validation-&gt;run() === TRUE)
{
 //save stuff
}
else
{
 echo validation_errors();
}
</code></pre>

Javascript

<pre><code>// jquery
$.post(&lt;?php site_url('controller/method')?&gt;, function(data) {
 $('.errors').html(data);
});
</code></pre>

If you really want to use JSON, jquery automatically parses JSON. You can loop through it and <code>append</code> into your html.

<hr>

in case you need validation errors as array you can append this function to the form_helper.php

<pre><code>if (!function_exists('validation_errors_array')) {

 function validation_errors_array($prefix = '', $suffix = '') {
 if (FALSE === ($OBJ = &amp; _get_validation_object())) {
 return '';
 }

 return $OBJ-&gt;error_array($prefix, $suffix);
 }
}
</code></pre>

blocks|key|2062069|text|我扩展了表单验证助手：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2062070|if+(+!+function_exists('validation_errors_array'))
{
++++function+validation_errors_array()
++++{
++++++++if+(FALSE+===+($OBJ+=&+_get_validation_object()))
++++++++{
++++++++++++return+'';
++++++++}
++++++++//+No+errrors,+validation+passes!
++++++++if+(count($OBJ->_error_array)+===+0)
++++++++{
++++++++++++return+'';
++++++++}
++++++++//+Generate+the+error+string
++++++++$array+=+'';
++++++++foreach+($OBJ->_error_array+as+$key+=>+$val)
++++++++{
++++++++++++if+($val+!=+'')
++++++++++++{
++++++++++++++++$array[$key]=+$val;
++++++++++++}
++++++++}
++++++++return+$array;
++++}
}|code-block|syntax|javascript|2062071|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I've extended form validation helper:

<pre><code>if ( ! function_exists('validation_errors_array'))
{
 function validation_errors_array()
 {
 if (FALSE === ($OBJ =&amp; _get_validation_object()))
 {
 return '';
 }
 // No errrors, validation passes!
 if (count($OBJ-&gt;_error_array) === 0)
 {
 return '';
 }
 // Generate the error string
 $array = '';
 foreach ($OBJ-&gt;_error_array as $key =&gt; $val)
 {
 if ($val != '')
 {
 $array[$key]= $val;
 }
 }
 return $array;
 }
}
</code></pre>

blocks|key|2421552|text|应用程序/库/MY_Form_validation.php|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2421553|<?php
class+MY_Form_validation+extends+CI_Form_validation
{
++function+__construct($config+=+array())
++{
++++parent::__construct($config);
++}

++function+error_array()
++{
++++if+(count($this->_error_array)+===+0)
++++++return+FALSE;
++++else
++++++return+$this->_error_array;
++}
}|code-block|syntax|javascript|2421554|然后，您可以从控制器中尝试以下操作：|2421555|$errors+=+$this->form_validation->error_array();|2421556|参考资料：错误作为数组|offset|length|2421557|entityMap|0|LINK|mutability|MUTABLE|url|http://darrenonthe.net/2011/05/10/get-codeigniter-form-validation-errors-as-an-array/^0|0|0|0|0|5|6|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@]|9|@$M|11|N|12|1|13]]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

<h3>application/libraries/MY_Form_validation.php</h3>

<pre><code>&lt;?php
class MY_Form_validation extends CI_Form_validation
{
 function __construct($config = array())
 {
 parent::__construct($config);
 }

 function error_array()
 {
 if (count($this-&gt;_error_array) === 0)
 return FALSE;
 else
 return $this-&gt;_error_array;
 }
}
</code></pre>

Then you could try the following from your controller:

<pre><code>$errors = $this-&gt;form_validation-&gt;error_array();
</code></pre>

Reference: <a href="http://darrenonthe.net/2011/05/10/get-codeigniter-form-validation-errors-as-an-array/" rel="noreferrer">validation_errors as an array</a>

blocks|key|2062136|text|我最喜欢的解决方案不涉及在任何地方添加函数或扩展验证库：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2062137|$validator+=&+_get_validation_object();
$error_messages+=+$validator->_error_array;|code-block|syntax|javascript|2062138|参考资料：http://thesimplesynthesis.com/post/how-to-get-form-validation-errors-as-an-array-in-codeigniter/|offset|length|2062139|您应该能够在代码中的任何一点上调用它。另外，值得注意的是，有一个前螺纹也讨论了这个问题。|2062140|entityMap|0|LINK|mutability|MUTABLE|url|http://thesimplesynthesis.com/post/how-to-get-form-validation-errors-as-an-array-in-codeigniter/|1|https://stackoverflow.com/questions/468139/codeigniter-form-validation-get-the-result-as-array-instead-of-string^0|0|0|5|2O|0|0|W|3|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@$I|Z|J|10|1|11]]|A|$]]|$1|K|3|L|5|6|7|12|8|@]|9|@$I|13|J|14|1|15]]|A|$]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]|U|$5|P|Q|R|A|$S|V]]]]

The solution I like best doesn't involve adding a function anywhere or extending the validation library:

<pre><code>$validator =&amp; _get_validation_object();
$error_messages = $validator-&gt;_error_array;
</code></pre>

Reference: <a href="http://thesimplesynthesis.com/post/how-to-get-form-validation-errors-as-an-array-in-codeigniter/" rel="nofollow noreferrer">http://thesimplesynthesis.com/post/how-to-get-form-validation-errors-as-an-array-in-codeigniter/</a>

You should be able to call this at any point in your code. Also, it's worth noting there is a <a href="https://stackoverflow.com/questions/468139/codeigniter-form-validation-get-the-result-as-array-instead-of-string">previous thread</a> that discusses this as well.

blocks|key|866127|text|如果您希望使用库方法，则可以对Form_validation类进行扩展。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|866128|class+MY_Form_validation+extends+CI_Form_validation+{

++++public+function+error_array()+{
++++++++return+$this->_error_array;
++++}

}|code-block|syntax|javascript|866129|然后在控制器/方法中调用它。|866130|$errors+=+$this->form_validation->error_array();|866131|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

If you prefer a library method, you can extend the Form_validation class instead.

<pre><code>class MY_Form_validation extends CI_Form_validation {

 public function error_array() {
 return $this-&gt;_error_array;
 }

}
</code></pre>

and subsequently call it in your controller/method.

<pre><code>$errors = $this-&gt;form_validation-&gt;error_array();
</code></pre>

blocks|key|2421632|text|来自：http://darrenonthe.net/2011/05/10/get-codeigniter-form-validation-errors-as-an-array/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2421633|默认情况下，Codeigniter表单验证错误作为字符串返回：|2421634|返回validation_errors()；|2421635|entityMap|0|LINK|mutability|MUTABLE|url|http://darrenonthe.net/2011/05/10/get-codeigniter-form-validation-errors-as-an-array/^0|3|2D|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

from : <a href="http://darrenonthe.net/2011/05/10/get-codeigniter-form-validation-errors-as-an-array/" rel="nofollow">http://darrenonthe.net/2011/05/10/get-codeigniter-form-validation-errors-as-an-array/</a>

By default, the Codeigniter Form Validation errors are returned as a string:

return validation_errors();;

blocks|key|866242|text|使用最新版本的代码点火器：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|866243|print_r($this->form_validation->error_array());|code-block|syntax|javascript|866244|返回：|866245|array("field"=>"message","field2"=>"message2");|866246|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Using the latest version of codeigniter:

<pre><code>print_r($this-&gt;form_validation-&gt;error_array());
</code></pre>

returns:

<pre><code>array("field"=&gt;"message","field2"=&gt;"message2");
</code></pre>

blocks|key|2421664|text|只需使用..。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2421665|$errors+=+$this->form_validation->error_array();|code-block|syntax|javascript|2421666|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Simply use...

<pre><code>$errors = $this-&gt;form_validation-&gt;error_array();
</code></pre>

I have a code for form validating in my CodeIgniter app:

<pre><code>$this-&gt;load-&gt;library('form_validation');

$this-&gt;form_validation-&gt;set_rules('message', 'Message', 'trim|xss_clean|required');
$this-&gt;form_validation-&gt;set_rules('email', 'Email', 'trim|valid_email|required');

if($this-&gt;form_validation-&gt;run() == FALSE)
{
 // some errors
}
else
{
 // do smth
 $response = array(
 'message' =&gt; "It works!"
 );
 echo json_encode($response);
}
</code></pre>

The form is AJAX-based, so frontend have to receive a JSON array with form errors, for example:

<pre><code>array (
 'email' =&gt; 'Bad email!',
 'password' =&gt; '6 symbols only!',
)
</code></pre>

How to get such list or array with form validation errors in CodeIgniter?

Form_validation errors into array

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我在我的CodeIgniter应用程序中有一个表单验证代码：$this->load->library('form_validation');$this->form_validation->set_rules('message', 'Message', 'trim|xss_clean|required');$this->...

问数组中的Form_validation错误
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问数组中的Form_validation错误EN