是否可以将 AngularJS 与 Jinja2 模板引擎一起使用? [英] Is it possible to use AngularJS with the Jinja2 template engine?

问题描述

我有一个 Flask 站点，我想使用 AngularJS JavaScript 框架.不幸的是，似乎分隔符重叠.

I have a Flask site and I want to use the AngularJS JavaScript framework. Unfortunately, it seems as if the delimiters overlap.

如果 Angular 和 Jinja2 都依赖双花括号 ({{ expr }})，我该如何使用?甚至有可能吗?

How do I use Angular with Jinja2 if both rely on double curly braces ({{ expr }})? Is it even possible?

推荐答案

您有一些选择.

1) 更改 Angular 的分隔符符号:

1) Change the delimiter notation for Angular:

var app = angular.module('Application', []);

app.config(['$interpolateProvider', function($interpolateProvider) {
  $interpolateProvider.startSymbol('{a');
  $interpolateProvider.endSymbol('a}');
}]);

为开始和结束符号选择的任何内容都将用作新的分隔符.在这种情况下，您将使用 {a some_variable a} 向 Angular 表达一个变量.

Whatever is chosen for the start and end symbols will act as the new delimiters. In this case, you would express a variable to Angular using {a some_variable a}.

这种方法的优点是只需要设置一次并且是显式的.

This approach has the advantage of only needed to be set once and being explicit.

2) 更改 Jinja2 的分隔符符号.

2) Change the delimiter notation for Jinja2.

覆盖或子类化 Flask.jinja_options.update 在您绑定到应用程序的 Flask 对象上(相关变量:block_start_string、block_end_string、variable_start_string、variable_end_string、comment_start_string、comment_end_string):

Override or subclass Flask.jinja_options.update on the Flask object that you bind to your application (relevant vars: block_start_string, block_end_string, variable_start_string, variable_end_string, comment_start_string, comment_end_string):

jinja_options = app.jinja_options.copy()

jinja_options.update(dict(
    block_start_string='<%',
    block_end_string='%>',
    variable_start_string='%%',
    variable_end_string='%%',
    comment_start_string='<#',
    comment_end_string='#>'
))
app.jinja_options = jinja_options

由于从服务器端未扩展敏感数据的风险更高，我建议在您不是唯一开发人员的任何项目中更改前端(即 Angular)的语法.

As there's a higher risk of sensitive data coming un-expanded from from the server-side, I suggest instead changing the syntax on the front-end (i.e. Angular) on any project in which you're not the sole developer.

3) 输出一个raw block 在 Jinja2 中使用 {% raw %} 或 {% verbatim %}:

3) Output a raw block in Jinja2 using {% raw %} or {% verbatim %}:

<ul>
{% raw %}
  {% for item in seq %}
      <li>{{ some_var }}</li>
  {% endfor %}
{% endraw %}
</ul>

4) 使用 Jinja2 在模板中写花括号:

4) Use Jinja2 to write the curly braces in the template:

{{ '{{ some_var }}' }}

这将在 HTML 中输出为 {{ some_var }}.

this will be output as {{ some_var }} in the HTML.

我对方法 #1 的偏好是显而易见的，但以上任何一种都可以.

My preference for approach #1 is apparent, but any of the above will work.

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