包简介

An extension for Twig that allows to defer block rendering.

README 文档

README

An extension for Twig that allows to defer block rendering.

Installation

composer require rybakit/twig-deferred-extension

Note that this extension requires Twig 3 or above. If you need support for older versions of Twig, please refer to the legacy repository.

Initialization

use Twig\DeferredExtension\DeferredExtension;
use Twig\Environment;

...

$twig = new Environment($loader);
$twig->addExtension(new DeferredExtension());

Simple example

{% block foo deferred %}
    {{ bar }}
{% endblock %}

{% set bar = 'bar' %}

The foo block will output "bar".

Advanced example

Just for example purposes, first create a global twig variable:

use Twig\Environment;

...

$twig = new Environment($loader);
$twig->addGlobal('assets', new \ArrayObject());

Then build the following set of templates:

{# layout.html.twig #}
<!DOCTYPE html>
<html>
    <head>
        ...
    </head>
    <body>
        {% block content '' %}

        {{ assets.append('/js/layout-header.js') }}

        {% block javascripts deferred %}
            {% for asset in assets %}
                <script src="{{ asset }}"></script>
            {% endfor %}
        {% endblock %}

        {{ assets.append('/js/layout-footer.js') }}
    </body>
</html>


{# page.html.twig #}
{% extends "layout.html.twig" %}

{% block content %}
    {{ assets.append('/js/page-header.js') }}

    {% if foo is defined %}
        {{ include("subpage1.html.twig") }}
    {% else %}
        {{ include("subpage2.html.twig") }}
    {% endif %}

    {{ assets.append('/js/page-footer.js') }}
{% endblock %}


{# subpage1.html.twig #}
{{ assets.append('/js/subpage1.js') }}


{# subpage2.html.twig #}
{{ assets.append('/js/subpage2.js') }}

The resulting html will be the following:

<!DOCTYPE html>
<html>
    <head>
        ...
    </head>
    <body>
        <script src="/js/layout-header.js"></script>
        <script src="/js/page-header.js"></script>
        <script src="/js/subpage2.js"></script>
        <script src="/js/page-footer.js"></script>
        <script src="/js/layout-footer.js"></script>
    </body>
</html>

Block overriding

{# index.twig #}
{% extends "base.twig" %}
{% block foo %}foo is not deferred anymore{% endblock %}
{% block bar deferred %}bar is deferred now{% endblock %}

{# base.twig #}
{% block foo deferred %}foo is deferred{% endblock %}
{% block bar %}bar is not deferred{% endblock %}

License

The library is released under the MIT License. See the bundled LICENSE file for details.

rybakit/twig-deferred-extension 适用场景与选型建议

rybakit/twig-deferred-extension 是一款基于 PHP 开发的 Composer 扩展包，目前已累计 2.79M 次下载、GitHub Stars 达 109，最近一次更新时间为 2020 年 06 月 02 日，在 PHP 生态内属于活跃度较高的组件。

它主要适用于以下技术方向：「twig」「extension」「defer」「lazy」「override」等业务场景。在实际项目中，围绕这些方向常见需要落地的问题包括：接口对接、性能调优、并发安全、与既有框架（Laravel / ThinkPHP / Yii / Webman 等）的兼容适配，以及生产环境的日志埋点与稳定性保障。

我们在过去多个企业项目中使用过 rybakit/twig-deferred-extension 或与其功能相近的方案，如果你在选型或落地过程中遇到问题，例如 版本兼容、二次改造、私有化封装、与内部系统对接、生产 BUG 排查，欢迎联系我们协助评估。

围绕 rybakit/twig-deferred-extension 我们能提供哪些服务？

定制开发 / 二次开发

基于 rybakit/twig-deferred-extension 在你已有业务上做功能扩展、字段裁剪、UI 适配、与内部账号 / 权限 / 日志系统的深度对接。

BUG 修复 & 性能优化

线上偶发问题、内存泄漏、慢查询、并发异常等排查修复；针对高流量场景做缓存、队列、索引层面的调优。

项目外包 & 长期维护

承接完整的项目从需求 → 设计 → 开发 → 上线 → 长期运维；也可按月提供技术保姆服务。

yvsm@zunyunkeji.com QQ：316430983 微信：yvsm316 西安尊云信息科技 · 专注 PHP / Go / 分布式系统研发

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