为错误渲染定义自定义树枝表单块

为错误渲染定义自定义树枝表单块

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为错误渲染定义自定义树枝表单块

本文介绍了为错误渲染定义自定义树枝表单块的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试为表单字段错误呈现定义一个特定的新块，保持 form_errors 不变以呈现常见错误.

# Twig 配置枝条:调试:%kernel.debug%严格变量:%kernel.debug%形式:资源:- 'ApplicationMyBundle:Main:form/customFormTheme.html.twig'

在 customFormTheme.html.twig 中，我覆盖了从 form_div_layout.html.twig 复制的几个块，并添加了以下新块.

{% block field_errors %}{% spaceless %}{% if errors|length >0%}<ul class="errors">{% for error in error %}{% if error.messageTemplate|length %}<li class="error">{{ error.messageTemplate|trans(error.messageParameters, 'validators') }}</li>{％ 万一 ％}{% 结束为 %}{％ 万一 ％}{% endspaceless %}{% endblock %}

然后我希望能够像这样在我的视图中使用这个块:

 
{{ form_label(form.message, 'message.label'|trans({},'contact')|raw ) }}{{ form_widget(form.message, {attr: {maxlength:1000, size:1000, rows:8}}) }}{{ field_errors(form.message) }}

但我收到以下错误:

函数field_errors"不存在.您的意思是form_errors"吗

我也尝试通过命名我的块 text_errors 或 textarea_errors 提到 这里 但我没有那么幸运.

有什么想法吗?

解决方案

实际上它的工作原理是定义块 text_errors 或 textarea_errors 并且仍然使用 {{form_errors(field.name) }} 在您的模板中.如果存在以您的字段类型命名的块(根据表单字段类型)它将被用来代替form_errors.

！！但是你不能在你的树枝模板中直接使用 {{ text_errors(field.name) }} !!

同样的方式，你可以为这样的特定类型创建一个自定义行

{% block textarea_row %}{% spaceless %}<div class="textarea l-field {{ (form_errors(form)?'error':'') }}">{{ form_label(form) }}{{ form_widget(form) }}{{ form_errors(form) }}

{% endspaceless %}{% endblock textarea_row %}

并在您的模板中使用它，如下所示:

{# message has textarea field type #}{{ form_row(form.message, {标签:'message.label'|trans({},'contact')|raw ,属性:{最大长度:1000，大小:1000，行:8}})}}

您还可以使用对象 attr{}

传递许多自定义参数

{% 块 form_row %}{% 无空间 %}<div class="form-field {{ (form_errors(form)?'error':'') }}">{{ form_label(form) }}{{ form_widget(form) }}{{ 转储(属性)}}{% 如果定义了 attr.help 而不是 attr.help == '' %}<p class="form-help">{{ attr.help }}</p>{% endif %}{{ form_errors(form) }}

{% endspaceless %}{% endblock form_row %}

并像这样使用它

{{ form_row(form.message, {标签:'message.label'|trans({},'contact')|raw ,属性:{最大长度:1000，大小:1000，行:8，帮助: 'password.help'|trans({})|raw}})}}

I'm trying to define a specific new block for form field errors rendering, keeping form_errors unchanged for common errors rendering.

# Twig Configuration
twig:
  debug:            %kernel.debug%
  strict_variables: %kernel.debug%
    form:
      resources:
        - 'ApplicationMyBundle:Main:form/customFormTheme.html.twig'

In customFormTheme.html.twig I overwrite a few blocks copied from form_div_layout.html.twig plus I added the folloowing new one.

{% block field_errors %}{% spaceless %}
        {% if errors|length > 0 %}
        <ul class="errors">
            {% for error in errors %}
                {% if error.messageTemplate|length %}
                <li class="error">{{ error.messageTemplate|trans(error.messageParameters, 'validators') }}</li>
                {% endif %}
            {% endfor %}
        </ul>
        {% endif %}
{% endspaceless %}{% endblock %}

Then I expect to be able to use this block in my views like this :

 <div>
     {{ form_label(form.message, 'message.label'|trans({},'contact')|raw ) }}
     {{ form_widget(form.message, {attr: {maxlength:1000, size:1000, rows:8}}) }}
     {{ field_errors(form.message) }}
 </div>

but I receive the following error :

The function "field_errors" does not exist. Did you mean "form_errors"

I also tried by naming my block text_errors or textarea_errors mentioned here but I haven't been luckier.

Any idea ?

解决方案

Actually it works by defining the block text_errors or textarea_errors only and still use {{ form_errors(field.name) }} in your template. If a block named after the type of your field exists (according to form field types) it will be used instead of form_errors.

!! But you can't use directly {{ text_errors(field.name) }} in your twig template !!

The same way you can have a custom row for a specific type like this 

{% block textarea_row %}{% spaceless %}
    <div class="textarea l-field {{ (form_errors(form)?'error':'') }}">
        {{ form_label(form) }}
        {{ form_widget(form) }}
        {{ form_errors(form) }}
    </div>
{% endspaceless %}{% endblock textarea_row %}

and use it in your template as follow :

{# message has textarea field type #}

{{ form_row(form.message, {
    label: 'message.label'|trans({},'contact')|raw ,
    attr: {maxlength:1000, size:1000, rows:8}})
}}

You can also pass many custom parameters by using the object attr{}

{% block form_row %}
{% spaceless %}
    <div class="form-field {{ (form_errors(form)?'error':'') }}">
        {{ form_label(form) }}
        {{ form_widget(form) }}
        {{ dump(attr) }}
        {% if attr.help is defined and not attr.help == '' %}<p class="form-help">{{ attr.help }}</p>{% endif %}
        {{ form_errors(form) }}
    </div>
{% endspaceless %}
{% endblock form_row %}

and use it like this

{{ form_row(form.message, {
       label: 'message.label'|trans({},'contact')|raw ,
       attr: {
           maxlength:1000, size:1000, rows:8,
           help: 'password.help'|trans({})|raw
       }
   })
}}

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08-14 09:33
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