在Jinja中将字符串拆分为列表?

问题描述

我在jinja2模板中有一些变量，这些变量用';'分隔.

I have some variables in a jinja2 template which are strings seperated by a ';'.

我需要在代码中单独使用这些字符串.即变量为variable1 ="green; blue"

I need to use these strings separately in the code.i.e. the variable is variable1 = "green;blue"

{% list1 = {{ variable1 }}.split(';') %}
The grass is {{ list1[0] }} and the boat is {{ list1[1] }}

我可以在呈现模板之前将它们拆分开，但是由于有时在字符串中最多包含10个字符串，因此会变得混乱.

I can split them up before rendering the template but since it are sometimes up to 10 strings inside the string this gets messy.

在做之前，我有一个jsp:

I had a jsp before where I did:

<% String[] list1 = val.get("variable1").split(";");%>
The grass is <%= list1[0] %> and the boat is <%= list1[1] %>

它适用于:

{% set list1 = variable1.split(';') %}
The grass is {{ list1[0] }} and the boat is {{ list1[1] }}

推荐答案

5年后回到我自己的问题后，看到很多人发现此功能有用，做了一些更新.

After coming back to my own question after 5 year and seeing so many people found this useful, a little update.

可以使用拆分功能将字符串变量拆分为list(它可以包含相似的值，set用于分配).我没有在官方文档中找到此功能，但它的功能类似于普通的Python.这些项目可以通过索引来调用，可以在循环中使用，也可以像Dave所建议的那样(如果您知道这些值)可以像元组那样设置变量.

A string variable can be split into a list by using the split function (it can contain similar values, set is for the assignment) . I haven't found this function in the official documentation but it works similar to normal Python. The items can be called via an index, used in a loop or like Dave suggested if you know the values, it can set variables like a tuple.

{% set list1 = variable1.split(';') %}
The grass is {{ list1[0] }} and the boat is {{ list1[1] }}

或

{% set list1 = variable1.split(';') %}
{% for item in list1 %}
    <p>{{ item }}<p/>
{% endfor %}

或

{% set item1, item2 = variable1.split(';') %}
The grass is {{ item1 }} and the boat is {{ item2 }}

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