blocks|key|6282491|text|您可以使用CodeIgniter创建自定义帮助器。您必须将它们放入应用程序/帮助程序中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|6282492|下面是如何实现的：|6282493|<?php

defined('BASEPATH')+OR+exit('No+direct+script+access+allowed');

if+(!function_exists('resize_uploaded_pix'))
{
++++function+resize_uploaded_pix($pic_full_path,+$formatname)
++++{
++++++++//global+$image_format;

++++++++$config['image_library']+=+'gd2';
++++++++$config['source_image']+++++=+$pic_full_path;+
++++++++$config['create_thumb']+++++=+TRUE;
++++++++$config['maintain_ratio']+++=+TRUE;

++++++++/*
+++++++++*+get+session+load+lib+and+config
+++++++++*/
++++++++$CI+=&+get_instance();
++++++++$CI->load->library('image_lib');
++++++++$CI->config->load('myconfig',+TRUE);
++++++++$image_format+=+$CI->config->item('image_format',+'myconfig');+++|code-block|syntax|javascript|6282494|您不能从帮助器中访问$this。因此，如果您需要在其中使用其他库，则需要像这样获取实例指针：|6282495|$CI+=&+get_instance();
$CI->load->library('image_lib');|6282496|然后从你的代码中调用助手代码，在本例中是一个控制器(但在视图中应该是一样的)，如下所示：|6282497|$this->load->helper('resize_pix');
resize_uploaded_pix($upload_data['upload_data']['full_path'],+'default');|6282498|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

You can create custom helpers using CodeIgniter. You have to put them into application/helpers. 

Here is how: 

<pre><code>&lt;?php

defined('BASEPATH') OR exit('No direct script access allowed');

if (!function_exists('resize_uploaded_pix'))
{
 function resize_uploaded_pix($pic_full_path, $formatname)
 {
 //global $image_format;

 $config['image_library'] = 'gd2';
 $config['source_image'] = $pic_full_path; 
 $config['create_thumb'] = TRUE;
 $config['maintain_ratio'] = TRUE;

 /*
 * get session load lib and config
 */
 $CI =&amp; get_instance();
 $CI-&gt;load-&gt;library('image_lib');
 $CI-&gt;config-&gt;load('myconfig', TRUE);
 $image_format = $CI-&gt;config-&gt;item('image_format', 'myconfig'); 
</code></pre>

You can't access $this from within a helper. So if you need to use other libs in it, you need to get the instance pointer like this:

<pre><code>$CI =&amp; get_instance();
$CI-&gt;load-&gt;library('image_lib');
</code></pre>

Then call the helper code from within your code, in this case a controller (but should work the same from within a view), like this:

<pre><code>$this-&gt;load-&gt;helper('resize_pix');
resize_uploaded_pix($upload_data['upload_data']['full_path'], 'default');
</code></pre>

blocks|key|1697470|text|这将是您的辅助应用程序/helpers/time_diff_helper.php：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1697471|<?php

defined('BASEPATH')+OR+exit('No+direct+script+access+allowed');

if+(!function_exists('time_diff'))
{
++++function+time_diff()
++++{
++++++++$dt2+=+strtotime($single->time_stamp);
++++++++$dt1+=+strtotime(date("Y-m-d+H:i:s"));
++++++++return+(int)(abs($dt1+-+$dt2)/(60*60));
++++}
}|code-block|syntax|javascript|1697472|然后将其加载到控制器中：|1697473|$this->load->helper('time_diff');
$tdiff+=+time_diff();|1697474|如果您将其加载到您的控制器中，您还应该能够在视图中使用它。人们会争辩说，业务逻辑不属于视图，视图是用来格式化显示的。您的函数是业务逻辑的一部分还是只是布局的一部分……？我想这是一个解释的问题。我会在控制器中调用它，并将其传递给视图。|1697475|$data['time_diff']+=+time_diff();
$this->load->view('myscreen1',+$data);|1697476|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

This would be your helper application/helpers/time_diff_helper.php: 

<pre><code>&lt;?php

defined('BASEPATH') OR exit('No direct script access allowed');

if (!function_exists('time_diff'))
{
 function time_diff()
 {
 $dt2 = strtotime($single-&gt;time_stamp);
 $dt1 = strtotime(date("Y-m-d H:i:s"));
 return (int)(abs($dt1 - $dt2)/(60*60));
 }
}
</code></pre>

You would then load it in your controller: 

<pre><code>$this-&gt;load-&gt;helper('time_diff');
$tdiff = time_diff();
</code></pre>

If you load it into your controller, you should also be able to use it from within your views. People would argue that business logic doesn't belong in views, that view are juts there to format the display. Is your function part of the business logic or just part of the layout... ? I guess it's a matter of interpretation. I would call it in the controller and pass it to the view. 

<pre><code>$data['time_diff'] = time_diff();
$this-&gt;load-&gt;view('myscreen1', $data);
</code></pre>

blocks|key|1698181|text|是的，它非常简单，不需要做一些额外的工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1698182|只需在控制器或视图或autoload.php中加载您创建的帮助器，|1698183|我把它加载到autoload.php里了|1698184|$autoload['helper']+=+array('url','string','form','common_helper');|code-block|syntax|javascript|1698185|如果你想在控制器/视图中加载它，那么遵循下面的synatx。|1698186|$this->load->helper('common_helper');|1698187|然后下一步是调用帮助器，根据我的要求，我需要从视图中调用它，因此代码将是。|1698188|++<?php++++++++echo+time_diff($test->time_stamp);++++?>+HOURS+AGO|1698189|只需调用该函数，调用就比cakephp+:)简单得多。|1698190|那么它就会工作得很好。|1698191|它可能会对像我这样的CI新手有所帮助。快乐编码:)|1698192|entityMap^0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|13|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|15|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|16|8|@]|9|@]|A|$]]|$1|Q|3|R|5|H|7|17|8|@]|9|@]|A|$I|J]]|$1|S|3|T|5|6|7|18|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|19|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1A|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|Z|$]]

Yes its very simple no need to do some extra work .

Just load the helper created by you either in controller or in view or in autoload.php ,

I loaded it in autoload.php 



<pre class="lang-html prettyprint-override"><code>$autoload['helper'] = array('url','string','form','common_helper');
</code></pre>

If you wish to load it in controller/view ,then follow this synatx.



<pre class="lang-html prettyprint-override"><code>$this-&gt;load-&gt;helper('common_helper');
</code></pre>

Then the next step is to call the helper , as per my requirement i need to call it from view so the code will be .



<pre class="lang-html prettyprint-override"><code> &lt;?php echo time_diff($test-&gt;time_stamp); ?&gt; HOURS AGO
</code></pre>

Just call the function only ,the calling is quite easier then cakephp :).

Then it will work fine .

it may be helpful to some one like me ,who is new to CI .
Happy coding :)

I am trying to make some helper in view part ,so that I can share the common logic in the view part of whole project .

But it seems in CI ,there is no such concept ,like in CakePhp ,i can use the custom helper .

I have searched a lot but not getting any proper results to carry out .

Below I have mentioned some codes of my view parts.



<pre class="lang-html prettyprint-override"><code>&lt;?php $dt2 = strtotime($single-&gt;time_stamp);
 $dt1 = strtotime(date("Y-m-d H:i:s"));
 echo (int)(abs($dt1 - $dt2)/(60*60));?&gt;
</code></pre>

I have used this codes in view ,but I want to reuse it .

I want to call a custom helper passing one argument ,as another one is the current date.

Any suggestion?

Thank you in advance .

How to make some logic in view part of codeigniter ,that will reusable other part of view also

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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我正在尝试在视图部分做一些帮助器，这样我就可以在整个项目的视图部分共享公共逻辑。但在CI中似乎没有这样的概念，就像在CakePhp中一样，我可以使用自定义帮助器。我搜索了很多，但没有得到任何适当的结果来执行。下面我已经提到了我的视图部分的一些代码。<?php $dt2 = strtotime($single->tim...

问如何在视图部分实现一些逻辑，使得视图的其他部分也可以重用
EN

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问如何在视图部分实现一些逻辑，使得视图的其他部分也可以重用EN