如何自定义 CollectionType() 项目? [英] How to customize a CollectionType() item?

问题描述

这个§Symfony2 文档 展示了一种用于自定义单个字段的出色技术.我经常使用它，但有一个特定的 Type 我很难进行自定义:CollectionType() 自定义集合本身非常很简单，你可以这样做:

This § of the Symfony2 documentation shows an awesome technique for customizing an individual field. I'm using it a lot but there is one particular Type for which I'm having a hard time doing the customization : the CollectionType() Customizing the collection itself is quite easy, you can do something like this:

{% block _mynamespace_mybundle_mytype_mycollectionfield_row %}
{% if prototype is defined %}
    {% set attr = attr|merge({'data-prototype': form_widget(prototype) }) %}
{% endif %}
{% spaceless %}
    <ul {{ block('widget_container_attributes') }}>
        {% spaceless %}
            {{ form_errors(form) }}
            {% for child in form %}
            <li>
              {{form_widget(child)}}
            </li>
            {% endfor %}
        {% endspaceless %}
        {{ form_rest(form) }}
    </ul>
{% endspaceless %}
{% endblock %}

但是如何自定义集合的每个元素?以及如何使用 Twig 自定义 data-prototype(data-prototype 是用于使用 js 添加新项目的特殊属性)?

But how can you customize each element of the collection ? And how can you customize the data-prototype using Twig (the data-prototype is a special attribute used to add new items with js)?

我尝试做这样的事情(对于 data-prototype):

I tried doing something like this (for the data-prototype):

{% block _mynamespace_mybundle_mytype_mycollectionfield_$$name$$_row %}
customization ok!
{% endblock %}

但是我得到错误，因为我不知道如何转义 $

But I get errors, because I don't know how to escape the $

关于项目，我尝试了很多东西:

Regarding the items, I tried many things:

{% block _mynamespace_mybundle_mytype_mycollectionfield_item_subfield_row %}
customization ok!
{% endblock %}

{% block _mynamespace_mybundle_mytype_mycollectionfield_element_subfield_row %}
customization ok!
{% endblock %}

它们都不起作用.

推荐答案

我在 symfony 的 bug tracker 中问了这个问题，似乎没有解决方案，但一个好的解决方法是为每个要自定义的子字段创建自定义类型.请参阅这个问题

I asked the question in symfony's bug tracker, and it seems there is no solution, but a good workaround is creating a custom type for each subfield you want to customize. See this issue

这篇关于如何自定义 CollectionType() 项目?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！