Django templay 配置全局变量 setting.pyTEMPLATES0['context_processors']最后面添加一行：'Tools.context_processors.app_name',如下：TEMPLATES = [ { 'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [os.path.join(BASE_DIR, 'templates')] , 'APP_DIRS': True, 'OPTIONS': { 'context_processors': [ 'django.template.context_processors.debug', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages', 'Tools.context_processors.app_name', ], }, }, ]同时，setting.py添加配置：APP_NAME=‘你网站的名称’Tools.context_processors.py#!/usr/bin/env python3 # -*- coding:utf-8 -*- # @Author: Ruike # @Time: 2019-10-20 23:38 # @File: context_processors.py.py # @Project: setting变量前端传递模版 from django.conf import settings # 项目名称 def app_name(request): return {'APP_NAME': settings.APP_NAME}模版引用：{{ APP_NAME }}

brew教程 一、安装brew：/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"二、使用brew：#查看系统通过 brew 安装的服务 brew services list #清除已卸载无用的启动配置文件 brew services cleanup mysql 启动：brew services start mysql 停止：brew services stop mysql 重启：brew services restart mysql brew 安装的根目录 一般在：/usr/local/Cellar/ 下面 1.安装卸载软件brew --version或者brew -v 显示brew版本信息 brew install <formula> 安装指定软件 brew unistall <formula 卸载指定软件 brew list 显示所有的已安装的软件 brew search text 搜索本地远程仓库的软件，已安装会显示绿色的勾 brew search /text/ 使用正则表达式搜软件2. 升级软件相关brew update 自动升级homebrew（从github下载最新版本） brew outdated 检测已经过时的软件 brew upgrade 升级所有已过时的软件，即列出的以过时软件 brew upgrade <formula>升级指定的软件 brew pin <formula> 禁止指定软件升级 brew unpin <formula> 解锁禁止升级 brew upgrade --all 升级所有的软件包，包括未清理干净的旧版本的包 3. 清理相关homebrew再升级软件时候不会清理相关的旧版本，在软件升级后我们可以使用如下命令清理 brew cleanup -n 列出需要清理的内容 brew cleanup <formula> 清理指定的软件过时包 brew cleanup 清理所有的过时软件 brew unistall <formula> 卸载指定软件 brew unistall <fromula> --force 彻底卸载指定软件，包括旧版本

JS 获取键盘事件 <script type="text/javascript" language=JavaScript charset="UTF-8"> document.onkeydown=function(event){ var e = event || window.event || arguments.callee.caller.arguments[0]; if (e) { switch (e.keyCode){ case 27: // do break; case 113: // do break; } } }; </script>只要你定义了这些键的动作，你在浏览器里按下这些键就会响应，兼容目前所有浏览器。js 里面的键盘事件经常用到，所以收集了键盘事件对应的键码来分享下： keyCode 8 = BackSpace BackSpace keyCode 9 = Tab Tab keyCode 12 = Clear keyCode 13 = Enter keyCode 16 = Shift_L keyCode 17 = Control_L keyCode 18 = Alt_L keyCode 19 = Pause keyCode 20 = Caps_Lock keyCode 27 = Escape Escape keyCode 32 = space keyCode 33 = Prior keyCode 34 = Next keyCode 35 = End keyCode 36 = Home keyCode 37 = Left keyCode 38 = Up keyCode 39 = Right keyCode 40 = Down keyCode 41 = Select keyCode 42 = Print keyCode 43 = Execute keyCode 45 = Insert keyCode 46 = Delete keyCode 47 = Help keyCode 48 = 0 equal braceright keyCode 49 = 1 exclam onesuperior keyCode 50 = 2 quotedbl twosuperior keyCode 51 = 3 section threesuperior keyCode 52 = 4 dollar keyCode 53 = 5 percent keyCode 54 = 6 ampersand keyCode 55 = 7 slash braceleft keyCode 56 = 8 parenleft bracketleft keyCode 57 = 9 parenright bracketright keyCode 65 = a A keyCode 66 = b B keyCode 67 = c C keyCode 68 = d D keyCode 69 = e E EuroSign keyCode 70 = f F keyCode 71 = g G keyCode 72 = h H keyCode 73 = i I keyCode 74 = j J keyCode 75 = k K keyCode 76 = l L keyCode 77 = m M mu keyCode 78 = n N keyCode 79 = o O keyCode 80 = p P keyCode 81 = q Q at keyCode 82 = r R keyCode 83 = s S keyCode 84 = t T keyCode 85 = u U keyCode 86 = v V keyCode 87 = w W keyCode 88 = x X keyCode 89 = y Y keyCode 90 = z Z keyCode 96 = KP_0 KP_0 keyCode 97 = KP_1 KP_1 keyCode 98 = KP_2 KP_2 keyCode 99 = KP_3 KP_3 keyCode 100 = KP_4 KP_4 keyCode 101 = KP_5 KP_5 keyCode 102 = KP_6 KP_6 keyCode 103 = KP_7 KP_7 keyCode 104 = KP_8 KP_8 keyCode 105 = KP_9 KP_9 keyCode 106 = KP_Multiply KP_Multiply keyCode 107 = KP_Add KP_Add keyCode 108 = KP_Separator KP_Separator keyCode 109 = KP_Subtract KP_Subtract keyCode 110 = KP_Decimal KP_Decimal keyCode 111 = KP_Divide KP_Divide keyCode 112 = F1 keyCode 113 = F2 keyCode 114 = F3 keyCode 115 = F4 keyCode 116 = F5 keyCode 117 = F6 keyCode 118 = F7 keyCode 119 = F8 keyCode 120 = F9 keyCode 121 = F10 keyCode 122 = F11 keyCode 123 = F12 keyCode 124 = F13 keyCode 125 = F14 keyCode 126 = F15 keyCode 127 = F16 keyCode 128 = F17 keyCode 129 = F18 keyCode 130 = F19 keyCode 131 = F20 keyCode 132 = F21 keyCode 133 = F22 keyCode 134 = F23 keyCode 135 = F24 keyCode 136 = Num_Lock keyCode 137 = Scroll_Lock keyCode 187 = acute grave keyCode 188 = comma semicolon keyCode 189 = minus underscore keyCode 190 = period colon keyCode 192 = numbersign apostrophe keyCode 210 = plusminus hyphen macron keyCode 211 = keyCode 212 = copyright registered keyCode 213 = guillemotleft guillemotright keyCode 214 = masculine ordfeminine keyCode 215 = ae AE keyCode 216 = cent yen keyCode 217 = questiondown exclamdown keyCode 218 = onequarter onehalf threequarters keyCode 220 = less greater bar keyCode 221 = plus asterisk asciitilde keyCode 227 = multiply division keyCode 228 = acircumflex Acircumflex keyCode 229 = ecircumflex Ecircumflex keyCode 230 = icircumflex Icircumflex keyCode 231 = ocircumflex Ocircumflex keyCode 232 = ucircumflex Ucircumflex keyCode 233 = ntilde Ntilde keyCode 234 = yacute Yacute keyCode 235 = oslash Ooblique keyCode 236 = aring Aring keyCode 237 = ccedilla Ccedilla keyCode 238 = thorn THORN keyCode 239 = eth ETH keyCode 240 = diaeresis cedilla currency keyCode 241 = agrave Agrave atilde Atilde keyCode 242 = egrave Egrave keyCode 243 = igrave Igrave keyCode 244 = ograve Ograve otilde Otilde keyCode 245 = ugrave Ugrave keyCode 246 = adiaeresis Adiaeresis keyCode 247 = ediaeresis Ediaeresis keyCode 248 = idiaeresis Idiaeresis keyCode 249 = odiaeresis Odiaeresis keyCode 250 = udiaeresis Udiaeresis keyCode 251 = ssharp question backslash keyCode 252 = asciicircum degree keyCode 253 = 3 sterling keyCode 254 = Mode_switch 使用event对象的keyCode属性判断输入的键值 eg：if(event.keyCode==13)alert(“enter!”); 键值对应表 A　　0X65 　U 　　0X85 B　　0X66　 V　　 0X86 C　　0X67　 W　　 0X87 D　　0X68　 X 　　0X88 E　　0X69　 Y　　 0X89 F　　0X70　 Z　　 0X90 G　　0X71　 0　　 0X48 H　　0X72　 1　　 0X49 I　　0X73　 2　　 0X50 J　　0X74　 3 　　0X51 K　　0X75　 4 　　0X52 L　　0X76　 5 　　0X53 M　　0X77　 6　　 0X54 N　　0X78 　7 　　0X55 O　　0X79 　8 　　0X56 P　　0X80 　9 　　0X57 Q　　0X81　ESC　　0X1B R　　0X82　CTRL 　0X11 S　　0X83　SHIFT　0X10 T　　0X84　ENTER　0XD如果要使用组合键，则可以判断是否同时按下了这几个键，比如ctrl键、shift键以及alt键的组合使用就可以判断是否多按下了ctrl键、shift键以及alt键

layui 让表格头部选择栏本地存储 编辑table.js如下位置添加代码如下：//table 列隐藏本地化（配置从localStroage） var deploy = localStorage.getItem("tableHidden" + tableFlag + ""); var arr = new Boolean(deploy) ? eval(deploy) : []; // console.log('[START]'+ typeof arr+ '[END]'); $.each(arr, function (index, ele) { var checked = ele.checked; var key = ele.key; var name = ele.name; layui.each(options.cols, function(i1, item1){ layui.each(item1, function(i2, item2){ if(i1+ '-'+ i2 === key){ var hide = item2.hide; //同步勾选列的 hide 值和隐藏样式 item2.hide = !checked; that.elem.find('*[data-key="'+ options.index +'-'+ key +'"]') [checked ? 'removeClass' : 'addClass'](HIDE); //根据列的显示隐藏，同步多级表头的父级相关属性值 if(hide != item2.hide){ that.setParentCol(!checked, name); } //重新适配尺寸 that.resize(); } }); }); });var tableHidden = ""; $('.layui-unselect.layui-form-checkbox').each(function (index, ele) { var key = $(ele).siblings('input').attr('data-key'); var name = $(ele).siblings('input').attr('name'); var checked = $(ele).attr('class').indexOf('layui-form-checked') !== -1 ? true : false; tableHidden += "{'key':'" + key + "','checked':" + checked + ",'name':'" + name + "'},"; }); console.log(tableFlag); localStorage.setItem("tableHidden" + tableFlag + "", "[" + tableHidden + "]");在前端页面使用<script> //不同页面设置不同值用以区分 //使用到筛选栏必须配置 var tableFlag='testpage'; </script>

MAC brew安装 mysql 一、安装CatowoMacbookPro: brew install mysql@5.7 Updating Homebrew... ==> Downloading https://homebrew.bintray.com/bottles/mysql@5.7-5.7.23.high_sierra. Already downloaded: /Users/fei/Library/Caches/Homebrew/mysql@5.7-5.7.23.high_sierra.bottle.tar.gz ==> Pouring mysql@5.7-5.7.23.high_sierra.bottle.tar.gz ==> /usr/local/Cellar/mysql@5.7/5.7.23/bin/mysqld --initialize-insecure --user=fei ==> Caveats We've installed your MySQL database without a root password. To secure it run: mysql_secure_installation MySQL is configured to only allow connections from localhost by default To connect run: mysql -uroot This formula is keg-only, which means it was not symlinked into /usr/local, because this is an alternate version of another formula. If you need to have this software first in your PATH run: echo 'export PATH="/usr/local/opt/mysql@5.7/bin:$PATH"' >> ~/.bash_profile For compilers to find this software you may need to set: LDFLAGS: -L/usr/local/opt/mysql@5.7/lib CPPFLAGS: -I/usr/local/opt/mysql@5.7/include To have launchd start mysql@5.7 now and restart at login: brew services start mysql@5.7 Or, if you don't want/need a background service you can just run: /usr/local/opt/mysql@5.7/bin/mysql.server start ==> Summary 🍺 /usr/local/Cellar/mysql@5.7/5.7.23: 317 files, 234.4MB二、配置：根据提示，先将mysql加入path:echo 'export PATH="/usr/local/opt/mysql@5.7/bin:$PATH"' >> ~/.bash_profile起一个新的终端，启动mysql服务mysql.service start配置密码：mysql_secure_installation三、使用mysql -uroot -p mysql.service start mysql.service stop