这是我在Symfony 4中非常简单的课程:
.mdc-select__label {
left: 0;
right: initial;
position: absolute;
bottom: 8px;
left: 0;
-webkit-transform-origin: left top;
transform-origin: left top;
-webkit-transition: -webkit-transform 180ms cubic-bezier(0.4, 0, 0.2, 1);
transition: -webkit-transform 180ms cubic-bezier(0.4, 0, 0.2, 1);
transition: transform 180ms cubic-bezier(0.4, 0, 0.2, 1);
transition: transform 180ms cubic-bezier(0.4, 0, 0.2, 1), -webkit-transform 180ms cubic-bezier(0.4, 0, 0.2, 1);
pointer-events: none;
will-change: transform;
}
[dir="rtl"] .mdc-select__label,
.mdc-select__label[dir="rtl"] {
left: initial;
right: 0;
}
.mdc-select[dir="rtl"] .mdc-select__label,
[dir="rtl"] .mdc-select .mdc-select__label {
-webkit-transform-origin: right top;
transform-origin: right top;
}
.mdc-select__label--float-above {
-webkit-transform: translateY(-100%) scale(0.75);
transform: translateY(-100%) scale(0.75);
}
<div id="root" class\$="mdc-select mdc-select--box mdc-menu-anchor [[addClass]]" role="listbox">
<div id="surface" class\$="mdc-select__surface [[_error(error)]]" tabindex="0">
<div id="label" class\$="mdc-select__label [[_float(value)]] [[_hide(label)]]">[[label]]</div>
<div class="mdc-select__selected-text">[[_display(value)]]</div>
<div class="mdc-select__bottom-line hidden"></div>
</div>
<div id="menu" class\$="mdc-menu mdc-select__menu [[addMenuClass]]">
<ul class="mdc-list mdc-menu__items" on-click="_selectItem">
<template is="dom-repeat" id="items" items="[[items]]" mutable-data>
<li class="mdc-list-item" role="option" tabindex="0">[[_display(item)]]</li>
</template>
</ul>
</div>
<i id="clear" class$="material-icons mdc-text-field__icon [[_showIfClearable(clearable)]]" on-click="clear">clear</i>
</div>
但是我总是得到: 无法自动装配服务“ App \ Controller \ T_contact”:方法“ __construct()”的参数“ $ email” 没有类型提示,您应显式配置其值。
我尝试过: “ ...__ construct(字符串$ email,字符串$ name)” 但我得到几乎相同的消息,除了: “ ... 是带有类型提示的”字符串“ ,您应该配置...
我不明白。 任何线索欢迎...
答案 0 :(得分:0)
由于Symfony不知道要插入哪个字符串,因此无法自动装配字符串。服务通过它们的用作标识符的类或接口自动连接,但是带有参数(int,字符串和数组),Symfony无法猜测要注入的参数。这就是为什么您收到错误消息...you should configure its value explicitly.
因此,您需要在services.yml中手动指定它们
示例:
App/Controller/T_contact:
arguments:
$email: 'your_email'
$name: 'your_name'
补充说明:最佳做法是CamelCase您的类名,如果它是控制器,则在其后缀术语Controller
(即TContactController)