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Django的过滤器们 - 雪地
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<h1>Django的过滤器们</h1>
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<span class="date">2014/12/15 0:2 上午</span>
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<p>{{ name | lower }} 小写</p>
<p>{{ my_text|escape|linebreaks }} 串联：先转义文本到HTML，再转换每行到 <p> 标签</p>
<p>{{ bio | truncatewords:“30” }} 显示前30个字</p>
<p>{{ 123|add:“5” }} 给value加上一个数值</p>
<p>{{ “AB'CD”|addslashes }} 单引号加上转义号，一般用于输出到javascript中</p>
<span id="more"></span><!-- more -->
<p>{{ “abcd”|capfirst }} 第一个字母大写</p>
<p>{{ “abcd”|center:“50” }} 输出指定长度的字符串，并把值对中</p>
<p>{{ “123spam456spam789”|cut:“spam” }} 查找删除指定字符串</p>
<p>{{ value|date:“F j, Y” }} 格式化日期</p>
<p>{{ value|default:“(N/A)” }} 值不存在，使用指定值</p>
<p>{{ value|default_if_none:“(N/A)” }} 值是None，使用指定值</p>
<p>{{ 列表变量|dictsort:“数字” }} 排序从小到大</p>
<p>{{ 列表变量|dictsortreversed:“数字” }} 排序从大到小</p>
<p>{% if 92|divisibleby:“2” %} 判断是否整除指定数字</p>
<p>{{ string|escape }} 转换为html实体</p>
<p>{{ 21984124|filesizeformat }} 以1024为基数，计算最大值，保留1位小数，增加可读性</p>
<p>{{ list|first }} 返回列表第一个元素</p>
<p>{{ “ik23hr&jqwh”|fix_ampersands }} &转为&</p>
<p>{{ 13.414121241|floatformat }} 保留1位小数，可为负数，几种形式</p>
<p>{{ 13.414121241|floatformat:“2” }} 保留2位小数</p>
<p>{{ 23456 |get_digit:“1” }} 从个位数开始截取指定位置的1个数字</p>
<p>{{ list|join:“, ” }} 用指定分隔符连接列表</p>
<p>{{ list|length }} 返回列表个数</p>
<p>{% if 列表|length_is:“3” %} 列表个数是否指定数值</p>
<p>{{ “ABCD”|linebreaks }} 用新行用<p\> 、 <br /\> 标记包裹</p>
<p>{{ “ABCD”|linebreaksbr }} 用新行用<br /\> 标记包裹</p>
<p>{{ 变量|linenumbers }} 为变量中每一行加上行号</p>
<p>{{ “abcd”|ljust:“50” }} 把字符串在指定宽度中对左，其它用空格填充</p>
<p>{{ “ABCD”|lower }} 小写</p>
<p>{% for i in “1abc1”|make_list %}ABCDE,{% endfor %} 把字符串或数字的字符个数作为一个列表</p>
<p>{{ “abcdefghijkl”|phone2numeric }} 把字符转为可以对应的数字</p>
<p>{{ 列表或数字|pluralize }} 单词的复数形式，如列表字符串个数大于1，返回s，否则返回空串</p>
<p>{{ 列表或数字|pluralize:“es” }} 指定es</p>
<p>{{ 列表或数字|pluralize:“y,ies” }} 指定ies替换为y</p>
<p>{{ object|pprint }} 显示一个对象的值</p>
<p>{{ 列表|random }} 返回列表的随机一项</p>
<p>{{ string|removetags:“br p div” }} 删除字符串中指定html标记</p>
<p>{{ string|rjust:“50” }} 把字符串在指定宽度中对右，其它用空格填充</p>
<p>{{ 列表|slice:“:2” }} 切片</p>
<p>{{ string|slugify }} 字符串中留下减号和下划线，其它符号删除，空格用减号替换</p>
<p>{{ 3|stringformat:“02i” }} 字符串格式，使用Python的字符串格式语法</p>
<p>{{ “E<A\>A</A\>B<C\>C</C\>D”|striptags }} 剥去[X]HTML语法标记</p>
<p>{{ 时间变量|time:“P” }} 日期的时间部分格式</p>
<p>{{ datetime|timesince }} 给定日期到现在过去了多少时间</p>
<p>{{ datetime|timesince:“other_datetime” }} 两日期间过去了多少时间</p>
<p>{{ datetime|timeuntil }} 给定日期到现在过去了多少时间，与上面的区别在于2日期的前后位置。</p>
<p>{{ datetime|timeuntil:“other_datetime” }} 两日期间过去了多少时间</p>
<p>{{ “abdsadf”|title }} 首字母大写</p>
<p>{{ “A B C D E F”|truncatewords:“3” }} 截取指定个数的单词</p>
<p>{{ “<a\>1<a\>1<a\>1</a\></a\></a\>22<a\>1</a\>”|truncatewords_html:“2” }} 截取指定个数的html标<br/>
记，并补完整</p>
<p><ul\>{{ list|unordered_list }}</ul\> 多重嵌套列表展现为html的无序列表</p>
<p>{{ string|upper }} 全部大写</p>
<p><a href="{{ link|urlencode }}"\>linkage</a\> url编码</p>
<p>{{ string|urlize }} 将URLs由纯文本变为可点击的链接。（没有实验成功）</p>
<p>{{ string|urlizetrunc:“30” }} 同上，多个截取字符数。（同样没有实验成功）</p>
<p>{{ “B C D E F”|wordcount }} 单词数</p>
<p>{{ “a b c d e f g h i j k”|wordwrap:“5” }} 每指定数量的字符就插入回车符</p>
<p>{{ boolean|yesno:“Yes,No,Perhaps” }} 对三种值的返回字符串，对应是 非空,空,None</p>
<p>日期格式化参数：</p>
<p>a ‘a.m.’ 或 ‘p.m.’ (注意,它与PHP 的输出略有不同.它包括了句点(django扩展). ‘a.m.’ </p>
<p>A ‘AM’ 或 ‘PM’. ‘AM’ </p>
<p>B 未实现. </p>
<p>d 每月第几天, 带前导零 ‘01’ to ‘31’ </p>
<p>D 每周第几天,3字母的字符串. ‘Fri’ </p>
<p>f 时间, 12-小时制的小时和分钟数, 如果分钟数为零,则不显示.(django 扩展). ‘1’, ‘1:30’ </p>
<p>F 月份, 长文本格式. ‘January’ </p>
<p>g 小时, 12-小时制,没有前导零 ‘1’ to ‘12’ </p>
<p>G 小时, 24-小时制,没有前导零 ‘0’ to ‘23’ </p>
<p>h 小时, 12-小时制,有前导零 ‘01’ to ‘12’ </p>
<p>H 小时, 24-小时制,有前导零 ‘00’ to ‘23’ </p>
<p>i 分钟. ‘00’ to ‘59’ </p>
<p>I 未实现 </p>
<p>j 每月第几天, 无前导零 ‘1’ to ‘31’ </p>
<p>l 每周第几天,长文本格式. ‘Friday’ </p>
<p>L 是否闰年. True or False </p>
<p>m 数字表示的月份,有前导零. ‘01’ to ‘12’ </p>
<p>M 月份,3字母短文本格式. ‘Jan’ </p>
<p>n 数字表示的月份,无前导零 ‘1’ to ‘12’ </p>
<p>N 出版风格的月份缩写(django 扩展) ‘Jan.’, ‘Feb.’, ‘March’, ‘May’ </p>
<p>O 与格林威治的时间差(以小时计) ‘+0200’ </p>
<p>P 12小时制的小时分钟及'a.m.‘/'p.m.’ 分钟数若为零则不显示. 用字符串表示特殊 的时间点, 如 ‘midnight’ 和 ‘noon’ (django扩展) ‘1 a.m.’, ‘1:30 p.m.’, ‘midnight’,‘noon’, ‘12:30 p.m.’ </p>
<p>r RFC 822 格式的日期 . ‘Thu, 21 Dec 2000 16:01:07+0200’ </p>
<p>s 秒数, 带有前导零的数字表示 ‘00’ to ‘59’ </p>
<p>S 英语序数后缀,用于一个月的第几天,2个字符 ‘st’, ‘nd’, ‘rd’ or ‘th’ </p>
<p>t 给定月共有多少天. 28 to 31 </p>
<p>T 本机时区. ‘EST’, ‘MDT’ </p>
<p>U 未实现 </p>
<p>w 一周中的第几天,没有前导零的数字 ‘0’ (Sunday) to ‘6’ (Saturday) </p>
<p>W ISO-8601 一年的第多少星期数, 一周从 星期一开始 1, 23 </p>
<p>y Year, 2 位数字表示 ‘99’ </p>
<p>Y Year, 4 位数字表示 ‘1999’ </p>
<p>z 一年中的第几天 . 0 to 365 </p>
<p>Z 以秒计的时区偏移量. 这个偏移量对UTC西部 时区总是负数,而对UTC东部时区则总是正数 -43200 to 43200</p>
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