要处理我的表单集合，我有一个块集合小部件的自定义表单主题。这个块集合小部件被呈现为一个表，因此依赖于一个block_collection_header和一个blocks_collection_body。
块集合小部件总是保持不变，但有时我会自定义另外两个块，块集合头和块集合体
我的工作代码：
{# From file myview.html.twig #}
{% form_theme form ':Model:prototype_table_collection.html.twig' %}
{% form(form) %}
Ant这个表单的主题如下：
{# From file ':Model:prototype_table_collection.html.twig' #}
{% block collection_widget %}
{% spaceless %}
<div class="collection">
{% if prototype is defined %}
{% set body = prototype %}
{% set attr = attr|merge({'data-prototype': block('collection_body') }) %}
{% set header = prototype %}
{% set attr = attr|merge({'data-header': block('collection_header') }) %}
{% endif %}
{% if form.vars.allow_delete is defined and form.vars.allow_delete %}
{% set allow_delete = true %}
{% else %}
{% set allow_delete = false %}
{% endif %}
<div {{ block('widget_container_attributes') }} class="protoype">
{{ form_errors(form) }}
<table class="subtable table">
<thead>
<tr class="headers" style="display: none;">
{% if form.children|length > 0 %}
{% if form.children[0]|length > 0 %}
{% set header = form.children[0] %}
{{ block('collection_header') }}
{% endif %}
{% endif %}
</tr>
</thead>
<tbody class="container_rows">
{% for rows in form %}
{% spaceless %}
{% if rows.children|length > 0 %}
{% set body = rows %}
{{ block('collection_body') }}
{% endif %}
{% endspaceless %}
{% endfor %}
</tbody>
</table>
{% if prototype is defined %}
{% if form.vars.attr['data-add_label'] is defined %}
{% set add_label = form.vars.attr['data-add_label'] ~ ' ' %}
{% else %}
{% set add_label = 'Ajouter ' %}
{% endif %}
<a href="#/" class="add_button btn btn-default btn-sm pull-right">{{ add_label }}<i class="fa fa-plus"></i></a>
{% endif %}
<br>
</div>
</div>
{% endspaceless %}
{% endblock collection_widget %}
{% block collection_header %}
{% for field in header %}
<th>
{% if 'checkbox' not in field.vars.block_prefixes %}
{{ form_label(field)|raw }}
{% else %}
{% if field.vars.attr['data-label'] is defined %}
{{ field.vars.attr['data-label'] }}
{% else %}
Options
{% endif %}
{% endif %}
</th>
{% endfor %}
{% if allow_delete %}
<th class="align_center">Supprimer</th>
{% endif %}
{% endblock %}
{% block collection_body %}
{% spaceless %}
{% set fieldNum = 1 %}
<tr class="row_to_delete child_collection">
{{ form_errors(body) }}
{% for field in body %}
<td class="field{{ fieldNum }} data-label">
{{ form_widget(field) }}
{{ form_errors(field) }}
</td>
{% set fieldNum = fieldNum + 1 %}
{% endfor %}
{% if allow_delete %}
<td class="align_center align_middle"><a href="#/" class="fmu_delete_button btn btn-default btn-xs"><i class="fa fa-times"></i></a></td>
{% endif %}
</tr>
{% endspaceless %}
{% endblock %}
我想使用但不起作用的代码：
视图保持相同的
{# From file myview.html.twig #}
{% form_theme form ':Model:prototype_table_collection.html.twig' %}
{% form(form) %}
在这里，我试图将代码从第一个块中外部化
{# From file ':Model:prototype_table_collection.html.twig' #}
{% block collection_widget %}
{{include(':Model:collection_widget.html.twig')}}
{%end block%}
{% block collection_header %}
{#stays the same as the previous code for this block. It is called by the block collection_widget #}
{%end block%}
{% block collection_body %}
{#stays the same as the previous code for this block. It is called by the block collection_widget #}
{%end block%}
新的外部化文件：
{#From file ':Model:collection_widget.html.twig' #}
{# Here I put the same exact code as I had before inside the block collection_widget, I'm not changing the code, I'm just trying to externalize this part #}
include不起作用，我的收藏不加载。
我尝试过扩展布局，但也不起作用示例：
{# From file ':Model:prototype_table_collection.html.twig' #}
{% extends :Model:parent.html.twig' %}
{% block content %}
{% block collection_header %}
{#stays the same as the previous code for this block. It is called by the block collection_widget #}
{%end block%}
{% block collection_body %}
{#stays the same as the previous code for this block. It is called by the block collection_widget #}
{%end block%}
{%end block%}
和父级：
{# From file ':Model:parent.html.twig' #}
{% block collection_widget %}
{# same code as brefore #}
{%end block%}
{% block content %}
{% endblock %}
如何避免在我使用的每个表单模板中重复此｛%block collection_widget%｝代码？
我相信您正在寻找水平重用功能：
水平重用是一种高级的Twig功能，在常规模板中几乎不需要它。它主要用于那些需要在不使用继承的情况下使模板块可重用的项目。
只需在主模板中包含use标签：
{# :Model:prototype_table_collection.html.twig #}
{% use ':Model:collection_widget.html.twig' %}
{% block collection_header %}
{# code #}
{%end block%}
{% block collection_body %}
{# code #}
{%end block%}
然后定义collection_widget块，就好像它在prototype_table_collection.html.twig文件中一样：
{# :Model:collection_widget.html.twig #}
{% block collection_widget %}
{# code #}
{% endblock %}