Jinja2 和 template模板冲突的处理及应用

摘要

在html页面中，可以直接使用template语言进行解析数据，但是在flask中，jinja2和template会产生冲突，在使用的时候需要屏蔽掉那部分的jinja2

1.冲突展示

image.png

2.解决冲突， 屏蔽jinja2语言

{raw}
内容

{endraw}

3.template语法

• 列表循环
  as是别名的意思,

{{each lists as list}
{{list}}
{{ /each}}

• if 判断

{{if + 条件 }}
{{/if}}

4.引入template

将template放入一个文件夹里，可以直接引用

• template

/*!art-template - Template Engine | http://aui.github.com/artTemplate/*/
!function(){function a(a){return a.replace(t,"").replace(u,",").replace(v,"").replace(w,"").replace(x,"").split(y)}function b(a){return"'"+a.replace(/('|\\)/g,"\\$1").replace(/\r/g,"\\r").replace(/\n/g,"\\n")+"'"}function c(c,d){function e(a){return m+=a.split(/\n/).length-1,k&&(a=a.replace(/\s+/g," ").replace(/<!--[\w\W]*?-->/g,"")),a&&(a=s[1]+b(a)+s[2]+"\n"),a}function f(b){var c=m;if(j?b=j(b,d):g&&(b=b.replace(/\n/g,function(){return m++,"$line="+m+";"})),0===b.indexOf("=")){var e=l&&!/^=[=#]/.test(b);if(b=b.replace(/^=[=#]?|[\s;]*$/g,""),e){var f=b.replace(/\s*\([^\)]+\)/,"");n[f]||/^(include|print)$/.test(f)||(b="$escape("+b+")")}else b="$string("+b+")";b=s[1]+b+s[2]}return g&&(b="$line="+c+";"+b),r(a(b),function(a){if(a&&!p[a]){var b;b="print"===a?u:"include"===a?v:n[a]?"$utils."+a:o[a]?"$helpers."+a:"$data."+a,w+=a+"="+b+",",p[a]=!0}}),b+"\n"}var g=d.debug,h=d.openTag,i=d.closeTag,j=d.parser,k=d.compress,l=d.escape,m=1,p={$data:1,$filename:1,$utils:1,$helpers:1,$out:1,$line:1},q="".trim,s=q?["$out='';","$out+=",";","$out"]:["$out=[];","$out.push(",");","$out.join('')"],t=q?"$out+=text;return $out;":"$out.push(text);",u="function(){var text=''.concat.apply('',arguments);"+t+"}",v="function(filename,data){data=data||$data;var text=$utils.$include(filename,data,$filename);"+t+"}",w="'use strict';var $utils=this,$helpers=$utils.$helpers,"+(g?"$line=0,":""),x=s[0],y="return new String("+s[3]+");";r(c.split(h),function(a){a=a.split(i);var b=a[0],c=a[1];1===a.length?x+=e(b):(x+=f(b),c&&(x+=e(c)))});var z=w+x+y;g&&(z="try{"+z+"}catch(e){throw {filename:$filename,name:'Render Error',message:e.message,line:$line,source:"+b(c)+".split(/\\n/)[$line-1].replace(/^\\s+/,'')};}");try{var A=new Function("$data","$filename",z);return A.prototype=n,A}catch(B){throw B.temp="function anonymous($data,$filename) {"+z+"}",B}}var d=function(a,b){return"string"==typeof b?q(b,{filename:a}):g(a,b)};d.version="3.0.0",d.config=function(a,b){e[a]=b};var e=d.defaults={openTag:"<%",closeTag:"%>",escape:!0,cache:!0,compress:!1,parser:null},f=d.cache={};d.render=function(a,b){return q(a,b)};var g=d.renderFile=function(a,b){var c=d.get(a)||p({filename:a,name:"Render Error",message:"Template not found"});return b?c(b):c};d.get=function(a){var b;if(f[a])b=f[a];else if("object"==typeof document){var c=document.getElementById(a);if(c){var d=(c.value||c.innerHTML).replace(/^\s*|\s*$/g,"");b=q(d,{filename:a})}}return b};var h=function(a,b){return"string"!=typeof a&&(b=typeof a,"number"===b?a+="":a="function"===b?h(a.call(a)):""),a},i={"<":"&#60;",">":"&#62;",'"':"&#34;","'":"&#39;","&":"&#38;"},j=function(a){return i[a]},k=function(a){return h(a).replace(/&(?![\w#]+;)|[<>"']/g,j)},l=Array.isArray||function(a){return"[object Array]"==={}.toString.call(a)},m=function(a,b){var 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• 引用

<script src="/static/js/template.js"></script>

5. 使用

例： 'orders-list-tmpl' 是在html文件中的script名字；
{orders:data.order_list} 字典数据
order_html 变量名
目的是将模板写入$('.orders-list')中

var order_html = template('orders-list-tmpl', {orders:data.order_list})
            $('.orders-list').html(order_html)

6.html构建

例
<scipt type="text/html" id="area_list"></script>指定要使用template的地方
这里是将整个script里的内容写入ul中

<ul class="filter-item filter-area">  </ul>

                {% raw %}
                <script type="text/html" id="area_list">
                    {{ each alist as area }}
                        <li area-id="{{ area.id }}">{{ area.name }}</li>
                    {{/each }}
                </script>
                {% endraw %}