liquid 模板语言语法学习笔记

简介

参考资料

Liquid Home Liquid for Designers Liquid for Programmers 参考博客1 参考博客2

Liquid is a template engine which was crafted for very specific requirements

It has to have simple markup and beautiful results. Template engines which don’t produce good looking results are no fun to use.
It needs to be non-evaling and secure. Liquid templates are made so that users can edit them. You don’t want your server running code that your users wrote.
It has to be stateless. The compile and render steps have to be separate, so that the expensive parsing and compiling can be done once; later on, you can just render it by passing in a hash with local variables and objects.
It needs to be able to style emails as well as HTML.

liquid标准过滤器

date - 格式化日期
capitalize - 输出字符串，字符串（句子）首字母大写 e.g. 假设tb为”hello world”{{ tb capitalize }} #=> ‘Hello world’
downcase - 将输入字符串转为小写
upcase - 将输入字符串转为大写
first - 得到传递数组的第一个元素
last - 得到传递数组的最后一个元素
join - 将数组中的元素连成一串，中间通过某些字符分隔
sort - 对数组元素进行排序
map - 从一个给定属性中映射/收集一个数组
size - 返回一个数组或字符串的大小
escape - 对一串字符串进行编码
escape_once - 返回一个转义的html版本，而不影响现有的转义文本
strip_html - 去除一串字符串中的所有html标签
strip_newlines - 从字符串中去除所有换行符(\n)
newline_to_br - 将所有的换行符(\n)换成html的换行标记
replace - 替换所有匹配内容 e.g.{{ ‘forfor’ replace:’for’, ‘bar’ }} #=> ‘barbar’
replace_first - 替换第一个匹配内容 e.g.{{ ‘forfor’ replace_first:’for’, ‘bar’ }} #=> ‘barfor’
remove - 移除所有匹配内容 e.g.{{ ‘forbarforbar’ remove:’for’}} #=> ‘barbar’
remove_first - 移除第一个匹配内容 e.g.{{ ‘forbarforbar’ remove_first:’for’}} #=> ‘barforbar’
truncate - 将一串字符串截断为x个字符
truncatewords - 将一串字符串截断为x个单词
prepend - 在一串字符串前面加上指定字符串，如 {{ ‘bar’ prepend:’foo’ }} #=> ‘foobar’
append - 在一串字符串后面加上指定字符串，如 {{ ‘foo’ append:’bar’ }} #=> ‘foobar’
minus - 减法，如 {{ 4 minus:2 }} #=> 2
plus - 加法，如 {{ ‘1’ plus:’1’ }} #=> ‘11’, {{ 1 plus:1 }} #=> 2
times - 乘法，如 {{ 5 times:4 }} #=> 20
divided_by - 除法，如 {{ 10 divided_by:2 }} #=> 5
split - 将一串字符串根据匹配模式分割成数组，如 {{ “a~b” split:~ }} #=> [‘a’,’b’]
modulo - 取余，如 {{ 3 modulo:2 }} #=> 1

liquid 模板语言语法学习笔记

简介

参考资料

liquid标准过滤器

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