Gowhich

Durban's Blog

发表于 分类于

yii常规post方式提交表单方式请参考：

http://www.yiichina.com/forum/topic/45/

除了常规post提交方式外，还有异步提交方式。
原理是使用iframe代替原来的页面跳转，大大提升用户体验。

1，前端html代码

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<form id="upForm" action="<?php echo $this->createUrl('repairUpload'); ?>" method="post" enctype    ="multipart/form-data" target="upload_target">  
    <input type="file" name="repair_attached_file" id="repair_attached_file" /><input type="subm    it" name="submitBtn" value="立即上传" />  
    <iframe id="upload_target" name="upload_target" src="#" style="width:0;height:0;border:0px solid #fff;"></iframe>  
</form>  
<span id="upload_repairinfo_success" style="color:blue;"></span>  

<script type="text/javascript">  
function startUpload() {  
    var spanObj = document.getElementById("upload_repairinfo_success");  
    spanObj.innerHTML = " 开始上传";  
    document.getElementById("upForm").sumbit();  
}  
function stopUpload(responseText){  
    var spanObj = document.getElementById("upload_repairinfo_success");  
    //spanObj.innerHTML = "上传成功";  
    spanObj.innerHTML = responseText;  
}  
</script>

2、后端php代码

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public function actionRepairUpload(){  
    $attach = CUploadedFile::getInstanceByName('repair_attached_file');  
    $retValue = "";  
    if($attach->size > 3*1024*1024){  
        $retValue = "提示：文件大小不能超过3M";  
    }else{  
        $f = file_get_contents($attach->tempName);  
        $a = new Attachment();  
        $a->ref_type = "failParts";  
        $a->data = $f;  
        $a->file_path = $attach->name;  
        $a->save();  
        $retValue = $a->id;  
    }  
    echo "<script type='text/javascript'>window.top.window.stopUpload('{$retValue}')</script>";  
}

发表于 分类于

在Yii中使用session

1，CHttpSession
与原生态php5的session使用差别是，php5使用session_start();$_session[‘key’] = $value;
在yii中，session已经被封装。
To start the session, call open(); To complete and send out session data, call close(); To destroy the session, call destroy().

If autoStart is set true, the session will be started automatically when the application component is initialized by the application.

/***** 方式一、实例添加 *****/

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$session=new CHttpSession;  
$session->open();  
$value1=$session['name1'];

/***** 方式二、直接调用应用添加 *****/

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Yii::app()->session->add('name','foobar');  
Yii::app()->session->add('name2','foobar');  
Yii::app()->session->add('name3','foobar');

或者

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$session = Yii::app()->session;  
$session['key'] = 'value';  
var_dump($session['key']);

遍历

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foreach($session as $name=>$value)

一个实例，

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$session = new CHttpSession;  
$session->open();  
          
$user_id = $this->user->id;  
$sessionKey = $user_id.'_is_sending';  
          
if(isset($session[$sessionKey])){  
    $first_submit_time = $session[$sessionKey];  
    $current_time      = time();  
    if($current_time - $first_submit_time < 10){  
        $session[$sessionKey] = $current_time;  
        $this->response(array('status'=>1, 'msg'=>'不能在10秒钟内连续发送两次。'));  
    }else{  
        unset($session[$sessionKey]);//超过限制时间，释放session";  
    }  
}  
  
//第一次点击确认按钮时执行  
if(!isset($session[$sessionKey])){  
    $session[$sessionKey] = time();  
}  
          
var_dump($sessionKey);
var_dump($session[$sessionKey]);
exit();

在index.php
在$app->run();前

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$session = Yii::app()->session;  
session_set_save_handler(  
    array($session,'openSession'),  
    array($session,'closeSession'),  
    array($session,'readSession'),  
    array($session,'writeSession'),  
    array($session,'destroySession'),  
    array($session,'gcSession')  
);

2，CDbHttpSession
CDbHttpSession继承自 CHttpSession ，把session数据存储在数据库中（表名是YiiSession），
The table name can be changed by setting sessionTableName. If the table does not exist, it will be automatically created if autoCreateSessionTable is set true.

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#The following is the table structure:
CREATE TABLE YiiSession
(
    id CHAR(32) PRIMARY KEY,
    expire INTEGER,
    data TEXT
)

CDbHttpSession relies on PDO to access database.

By default, it will use an SQLite3 database named ‘session-YiiVersion.db’ under the application runtime directory. You can also specify connectionID so that it makes use of a DB application component to access database.

When using CDbHttpSession in a production server, we recommend you pre-create the session DB table and set autoCreateSessionTable to be false. This will greatly improve the performance. You may also create a DB index for the ‘expire’ column in the session table to further improve the performance.

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CREATE TABLE `YiiSession` (  
  `id` char(32) NOT NULL,  
  `expire` int(11) default NULL,  
  `data` text,  
  PRIMARY KEY  (`id`),  
  KEY `expire` (`expire`)  
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

例，在../config/main.php中配置

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'session'=>array(  
    'class' => 'CDbHttpSession',  
    'autoStart' => true,  
    'sessionTableName'=>'YiiSession',  
    'autoCreateSessionTable'=> false,  
    'connectionID'=>'db',  
),

在Yii中使用cookie

Yii实现了一个cookie验证机制，可以防止cookie被修改。启用之后可以对cookie的值进行HMAC检查。
Cookie验证在默认情况下是禁用的。如果你要启用它，可以编辑应用配置 中的组件中的CHttpRequest部分。
一定要使用经过Yii验证过的cookie数据。使用Yii内置的cookies组件来进行cookie操作，不要使用$_COOKIES。
实例：

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// 检索一个名为$name的cookie值  
$cookie=Yii::app()->request->cookies[$name];  
$value=$cookie->value;  
......  
// 设置一个cookie  
$cookie=new CHttpCookie($name,$value);  
Yii::app()->request->cookies[$name]=$cookie;

发表于 分类于

首先，在Yii框架中，你不需要像标准PHP代码那样使用session_start(),
在Yii框架中，autoStart 属性缺省被设置为true，所以，
虽然没有使用session_start(),你仍然可以使用$_SESSION全局变量，但最好使用
Yii框架封装的Yii::app->session:

设置session变量：

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Yii::app()->session['var']='value';

使用：Yii::app()->session['var'];

移除：unset(Yii::app()->session['var']);

更为复杂一点的使用时如何配置你的session
配置项可设在 protected/config/main.php的components中：

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'session'=>array(
   'autoStart'=>false(/true),
   'sessionName'=>'Site Access',
   'cookieMode'=>'only',
   'savePath'='/path/to/new/directory',
),

将session保持在数据库的设置：

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'session' => array (
    'class' => 'system.web.CDbHttpSession',
    'connectionID' => 'db',
    'sessionTableName' => 'actual_table_name',
),

好，还有什么呢？对了，为了调试，有时需要知道当前用户的session ID,
该值就在 Yii::app()->session->sessionID 中。

最后，当用户退出登录(logout),你需要消除痕迹，可使用：
Yii::app()->session->clear()移去所有session变量，然后，调用
Yii::app()->session->destroy()移去存储在服务器端的数据。

发表于 更新于 分类于

其实很简答的，只要你想加入类似keywords或者content的内容的meta的话是很简单的，代码如下：

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Yii::app()->clientScript->registerMetaTag('Content description ',"description");
Yii::app()->clientScript->registerMetaTag("新媒体指数、[name]vlinkage投票排名[rank]","keywords");

添加js，css文件

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Yii::app()->clientScript->registerCssFile(Yii::app()->baseUrl.'/css/my.css');
Yii::app()->clientScript->registerScriptFile(Yii::app()->baseUrl.'/css/my.js');

发表于 分类于

关于Yii中的url的跳转，有两个方法，第一个是Redirect,第二个是Forward

Yii的Rediret

使用方法

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$this->redirect(array('index'));

对应的是当前controller的index action

http://www.localyii.com/testwebap/index.php?r=user/index

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$this->redirect(array('view','id'=>$model->id));

对应的是当前controller的view action并传递id参数值为3

http://www.localyii.com/testwebap/index.php?r=user/view&id=3

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$this->redirect(array('/site/contact','id'=>12));
$this->redirect(array('site/contact','id'=>12));

http://www.localyii.com/testwebap/index.php?r=site/contact&id=12

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$this->redirect(array('site/contact','id'=>'idv','name'=>'namev'));

http://www.localyii.com/testwebap/index.php?r=site/contact&id=idv&name=namev

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$this->redirect(array('site/contact','v1','v2','v3'));

http://www.localyii.com/testwebap/index.php?r=site/contact&0=v1&1=v2&2=v3

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$this->redirect(array('site/contact','v1','v2','v3','#'=>'ttt'));

带anchor的
http://www.localyii.com/testwebap/index.php?r=site/contact&0=v1&1=v2&2=v3#ttt

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$this->redirect(array('user/create','v1','v2','v3','#'=>'ttt'));

http://www.localyii.com/testwebap/index.php?r=user/create&0=v1&1=v2&2=v3#ttt
modules的redirect

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$this->redirect(array('testmod/default/index','v1','v2','v3','#'=>'ttt'));

http://www.localyii.com/testwebap/index.php?r=testmod/default/index&0=v1&1=v2&2=v3#ttt
跳转到一个绝对路径

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$this->redirect('http://www.baidu.com');

函数的原型是

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public function redirect($url,$terminate=true,$statusCode=302)
{
    if(strpos($url,'/')===0)
        $url=$this->getHostInfo().$url;
    header('Location: '.$url, true, $statusCode);
    if($terminate)
        Yii::app()->end();
}

Yii的forward

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$this->forward('/testmod/default/index');

$this->forward('testmod/default/index');

地址栏url

http://www.localyii.com/testwebap/index.php

forward是不需要参数的

函数的原型是：

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public function forward($route,$exit=true)
{
    if(strpos($route,'/')===false)
        $this->run($route);
    else
    {
        if($route[0]!=='/' && ($module=$this->getModule())!==null)
            $route=$module->getId().'/'.$route;
        Yii::app()->runController($route);
    }
    if($exit)
        Yii::app()->end();
}

forward和redirect的区别显而易见

1，浏览器url地址

2，是否支持绝对地址

3，是否传递参数

发表于 分类于

关于Yii 隐藏index.php的方法

配置环境是nginx+ubuntu+php

ubuntu的配置和php的配置这里不再讨论，讨论一下nginx的配置和yii的配置

nginx的配置

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server {
        listen   80; ## listen for ipv4; this line is default and implied
        root /home/davidzhang/local.ubuntu.new.star.vlinkage.com;
        index index.html index.htm index.php;

        # Make site accessible from http://localhost/
        server_name local.ubuntu.new.star.vlinkage.com;

        #include        yii.conf;
        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to index.html
                #try_files $uri $uri/ /index.html;
                try_files $uri $uri/ /index.php?$args;
                # Uncomment to enable naxsi on this location
                # include /etc/nginx/naxsi.rules
                index index.php;
        }

        location /doc/ {
                alias /usr/share/doc/;
                autoindex on;
                allow 127.0.0.1;
                deny all;
        }
}

这里的配置主要是这里

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location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to index.html
                #try_files $uri $uri/ /index.html;
                try_files $uri $uri/ /index.php?$args;
                # Uncomment to enable naxsi on this location
                # include /etc/nginx/naxsi.rules
                index index.php;
        }

当然也可以使用下面的方式

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location / {
    if (!-e $request_filename)
    {
        rewrite ^(.*)$  /index.php last;
    }
}

接下来是yii的配置

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'urlManager'=>array(
            'urlFormat'=>'path',
            'showScriptName'=>false,
            'rules'=>array(
                '<controller:\w+>/<id:\d+>'=>'<controller>/view',
                '<controller:\w+>/<action:\w+>/<id:\d+>'=>'<controller>/<action>',
                '<controller:\w+>/<action:\w+>'=>'<controller>/<action>',
            ),
        ),

这里面关键的是这里

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'showScriptName'=>false,

不然index.php还是会有的，在自己的项目中请注意这里

发表于 分类于

$criteria = new CDbCriteria;

addCondition() 方法

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public CDbCriteria addCondition(mixed $condition, string $operator='AND')
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$criteria->addCondition("id = :id");
$criteria->addCondition('id=1','OR');
$criteria->params[':id']=1;

addInCondition() 方法

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public CDbCriteria addInCondition(string $column, array $values, string $operator='AND')
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$criteria->addInCondition('id', array(1, 2, 3));

addNotInCondition() 方法

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public CDbCriteria addNotInCondition(string $column, array $values, string $operator='AND')
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$criteria->addNotInCondition(‘id’, array(1, 2, 3));

addSearchCondition() 方法

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public CDbCriteria addSearchCondition(string $column, string $keyword, boolean $escape=true, string $operator='AND', string $like='LIKE')
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$criteria->addSearchCondition('name','分类');

compare() 方法

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public CDbCriteria compare(string $column, mixed $value, boolean $partialMatch=false, string $operator='AND', boolean $escape=true)
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$criteria->compare('id,1);

addBetweenCondition()

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public CDbCriteria addBetweenCondition(string $column, string $valueStart, string $valueEnd, string $operator='AND')
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$criteria->addBetweenCondition('id', 1, 4);

$criteria->select = 'id,parentid,name';//field default='*';

$criteria->join = 'xxx'; //连接表

$criteria->with = 'xxx';//调用relations

$criteria->limit =10; //取1条数据，如果小于0，则不作处理

$criteria->offset =1; //两条合并起来，则表示 limit 10 offset1,或者代表了。limit 1,10

$criteria->order = 'xxx DESC,XXX ASC' ;//排序条件

$criteria->group = 'group 条件';

$criteria->having = 'having 条件 ';

$criteria->distinct = FALSE;//是否唯一查询

发表于 分类于

最近在使用django做图片上传的时候，发现一个问题就是，有些在别处下载过来的图片，如果不修改名称就使用的话，导致的结果就是，有时候直接输出会出现显示不了图片的情况，经过检查才发现，是因为图片的名称有特殊字符，导致输出失败，于是决定一下图片的命名方式；

下面是是我对图片进行截切的函数代码;

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def upload_large_image_file(file, type='man'):
    '''文件上传函数,上传的文件夹一定要存在'''
    if file:
        size = 480
        #先移动文件，然后截取指定大小尺寸的文件
        parser = ImageFile.Parser()
        for content in file.chunks():
            parser.feed(content)
        img = parser.close()

        width, height = img.size
        if width > size:
            delta = width / size
            height = int(height / delta)
            img.thumbnail((size, height), Image.ANTIALIAS)


        name, ext = os.path.splitext(os.path.basename(file.name))
        name = uuid.uuid4().hex
        file_name = os.path.join('upload/'+type+'/large',name+'_large'+ext)
        path_name = os.path.join(MEDIA_ROOT, file_name)
        img.save(path_name)

        return(file_name)
    return(file_name)


def upload_middle_image_file(file, type='man'):
    '''文件上传函数,上传的文件夹一定要存在'''
    if file:
        size = 320
        #先移动文件，然后截取指定大小尺寸的文件
        parser = ImageFile.Parser()
        for content in file.chunks():
            parser.feed(content)
        img = parser.close()

        width, height = img.size
        if width > size:
            delta = width / size
            height = int(height / delta)
            img.thumbnail((size, height), Image.ANTIALIAS)


        name, ext = os.path.splitext(os.path.basename(file.name))
        name = uuid.uuid4().hex
        file_name = os.path.join('upload/'+type+'/middle',name+'_middle'+ext)
        path_name = os.path.join(MEDIA_ROOT, file_name)
        img.save(path_name)

        return(file_name)
    return(file_name)


def upload_small_image_file(file,type='man'):
    '''文件上传函数,上传的文件夹一定要存在'''
    if file:
        size = 100
        #先移动文件，然后截取指定大小尺寸的文件
        parser = ImageFile.Parser()
        for content in file.chunks():
            parser.feed(content)
        img = parser.close()

        width, height = img.size
        if width > size:
            delta = width / size
            height = int(height / delta)
            img.thumbnail((size, height), Image.ANTIALIAS)


        name, ext = os.path.splitext(os.path.basename(file.name))
        name = uuid.uuid4().hex
        file_name = os.path.join('upload/'+type+'/small',name+'_small'+ext)
        path_name = os.path.join(MEDIA_ROOT, file_name)
        img.save(path_name)

        return(file_name)
    return(file_name)

发表于 分类于

django 执行 uwsgi进行自动删除进程id并进行重启 防止多个进行 导致服务器挂掉

最近使用django+uwsgi+虚拟机（ubuntu），每次进行uwsgi重启的时候都会增加一个进程的，导致自己的mysql无意间挂掉了，莫名其妙，结果才发现，有大量的uwsgi的进程，但是每次启动的时候都去删除，手动肯定很麻烦，于是自己就google后，写了一个自己的脚本。

脚本如下，仅供参考

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#!/bin/sh
NAME="walkerfree"
if [ ! -n "$NAME" ];then
    echo "no arguments"
    exit;
fi

echo $NAME
ID=`ps -ef | grep "$NAME" | grep -v "$0" | grep -v "grep" | awk '{print $2}'`
echo $ID
echo "################################################"
for id in $ID
do
kill -9 $id
echo "kill $id"
done
echo  "################################################"
uwsgi --ini /usr/local/etc/uwsgi/walkerfree-uwsgi.ini

发表于 分类于

Create thumbnails for an ImageField in django，在django中创建缩略图的过程其实有两种方法，第一种方法是比较传统的就是直接使用写入的方法，第二种方式就是使用PIL，我这里针对自己项目的需要，需要实现直接上传直接切图的功能。

功能实现：

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def upload_large_image_file(file, type='man'):
    '''文件上传函数,上传的文件夹一定要存在'''
    if file:
        size = 480
        #先移动文件，然后截取指定大小尺寸的文件
        parser = ImageFile.Parser()
        for content in file.chunks():
            parser.feed(content)
        img = parser.close()

        width, height = img.size
        if width > size:
            delta = width / size
            height = int(height / delta)
            img.thumbnail((size, height), Image.ANTIALIAS)


        name, ext = os.path.splitext(os.path.basename(file.name))
        file_name = os.path.join('upload/'+type+'/large',name+'_large'+ext)
        path_name = os.path.join(MEDIA_ROOT, file_name)
        img.save(path_name)

        return(file_name)
    return(file_name)


def upload_middle_image_file(file, type='man'):
    '''文件上传函数,上传的文件夹一定要存在'''
    if file:
        size = 320
        #先移动文件，然后截取指定大小尺寸的文件
        parser = ImageFile.Parser()
        for content in file.chunks():
            parser.feed(content)
        img = parser.close()

        width, height = img.size
        if width > size:
            delta = width / size
            height = int(height / delta)
            img.thumbnail((size, height), Image.ANTIALIAS)


        name, ext = os.path.splitext(os.path.basename(file.name))
        file_name = os.path.join('upload/'+type+'/middle',name+'_middle'+ext)
        path_name = os.path.join(MEDIA_ROOT, file_name)
        img.save(path_name)

        return(file_name)
    return(file_name)


def upload_small_image_file(file,type='man'):
    '''文件上传函数,上传的文件夹一定要存在'''
    if file:
        size = 100
        #先移动文件，然后截取指定大小尺寸的文件
        parser = ImageFile.Parser()
        for content in file.chunks():
            parser.feed(content)
        img = parser.close()

        width, height = img.size
        if width > size:
            delta = width / size
            height = int(height / delta)
            img.thumbnail((size, height), Image.ANTIALIAS)


        name, ext = os.path.splitext(os.path.basename(file.name))
        file_name = os.path.join('upload/'+type+'/small',name+'_small'+ext)
        path_name = os.path.join(MEDIA_ROOT, file_name)
        img.save(path_name)

        return(file_name)
    return(file_name)

因为是要传递三种不同尺寸的图片，并且图片的也不同，一个大的一个中等的一个小的。

创建的form是这样的 如下：

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class ManCreateForm(forms.Form):
    GENDER = (
       (0, u'展示'),
       (1, u'不展示'), 
       )

    title = forms.CharField(max_length=255, label='标题',widget=forms.TextInput(attrs={'placeholder':'标题','class':'input-block-level span8'}))
    url_address = forms.CharField(label='详情地址', widget=forms.TextInput(attrs={'placeholder':'详情地址','class':'input-block-level span8'}))
    description = forms.CharField(label='详情简介',widget=forms.Textarea(attrs={'placeholder':'详情简介','class':'input-block-level span8'}))
    large_image = forms.ImageField(label='大图',widget=forms.ClearableFileInput(attrs={'placeholder':'大图','class':'input-block-level span8'}))
    middle_image = forms.ImageField(label='中图',widget=forms.ClearableFileInput(attrs={'placeholder':'中图','class':'input-block-level span8'}))
    small_image = forms.ImageField(label='小图',widget=forms.ClearableFileInput(attrs={'placeholder':'小图','class':'input-block-level span8'}))
    show = forms.ChoiceField(label='是否展示',widget=forms.Select,choices=GENDER)

    def clean_title(self):
        title = self.cleaned_data['title']
        if title is None:
            raise forms.ValidationError("标题不能为空")

        return title

    def clean_url_address(self):
        url = self.cleaned_data['url_address']
        validate = URLValidator()
        try:
            validate(url)
        except ValidationError:
            raise forms.ValidationError("详情地址必须是标准的url地址")

        return url



class WomanCreateForm(forms.Form):
    GENDER = (
       (0, u'展示'),
       (1, u'不展示'), 
       )
    title = forms.CharField(max_length=255, label='标题',widget=forms.TextInput(attrs={'placeholder':'标题','class':'input-block-level span8'}))
    description = forms.CharField(label='详情简介',widget=forms.Textarea(attrs={'placeholder':'详情简介','class':'input-block-level span8'}))
    url_address = forms.CharField(label='详情地址',widget=forms.TextInput(attrs={'placeholder':'详情地址','class':'input-block-level span8'}))
    large_image = forms.ImageField(label='大图',widget=forms.ClearableFileInput(attrs={'placeholder':'大图','class':'input-block-level span8'}))
    middle_image = forms.ImageField(label='中图',widget=forms.ClearableFileInput(attrs={'placeholder':'中图','class':'input-block-level span8'}))
    small_image = forms.ImageField(label='小图',widget=forms.ClearableFileInput(attrs={'placeholder':'小图','class':'input-block-level span8'}))
    show = forms.ChoiceField(label='是否展示',widget=forms.Select,choices=GENDER)

    def clean_title(self):
        title = self.cleaned_data['title']
        if title is None:
            raise forms.ValidationError("标题不能为空")

        return title

    def clean_url_address(self):
        url = self.cleaned_data['url_address']
        validate = URLValidator()
        try:
            validate(url)
        except ValidationError:
            raise forms.ValidationError("详情地址必须是标准的url地址")

        return url

class GiftsCreateForm(forms.Form):
    GENDER = (
       (0, u'展示'),
       (1, u'不展示'), 
       )
    title = forms.CharField(max_length=255, label='标题',widget=forms.TextInput(attrs={'placeholder':'标题','class':'input-block-level span8'}))
    description = forms.CharField(label='详情简介',widget=forms.Textarea(attrs={'placeholder':'详情简介','class':'input-block-level span8'}))
    url_address = forms.CharField(label='详情地址',widget=forms.TextInput(attrs={'placeholder':'详情地址','class':'input-block-level span8'}))
    large_image = forms.ImageField(label='大图',widget=forms.ClearableFileInput(attrs={'placeholder':'大图','class':'input-block-level span8'}))
    middle_image = forms.ImageField(label='中图',widget=forms.ClearableFileInput(attrs={'placeholder':'中图','class':'input-block-level span8'}))
    small_image = forms.ImageField(label='小图',widget=forms.ClearableFileInput(attrs={'placeholder':'小图','class':'input-block-level span8'}))
    show = forms.ChoiceField(label='是否展示',widget=forms.Select,choices=GENDER)

    def clean_title(self):
        title = self.cleaned_data['title']
        if title is None:
            raise forms.ValidationError("标题不能为空")

        return title

    def clean_url_address(self):
        url = self.cleaned_data['url_address']
        validate = URLValidator()
        try:
            validate(url)
        except ValidationError:
            raise forms.ValidationError("详情地址必须是标准的url地址")

        return url

三个类里面的内容基本上是一样的，只不过我追求名称的区分，就写了三个

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