在样式化组件中使用来自 React Router 的“活动"状态

问题描述

当您位于 NavLink 链接到的页面时，React Router 会向它们添加 active 类.如何使用样式化组件访问此属性.当您在他们的页面上时，我需要对菜单项进行不同的样式设置.

React Router adds an active class to NavLinks when you are on the page that they link to. How can I access this property with Styled Components. I need to styled menu items differently when you are on their page.

const LinkElem = styled(NavLink)`
  font-size: 16px;
  font-weight: 400;

  ${props => console.log(props)};

  &:hover {
    color: ${props => props.theme.colorOrange};
  }
`;

const Menu = props => {
  const { me } = props;
  return (
    <MenuElem>
      <li>
        {me ? (
          <LinkElem to="/account">Account</LinkElem>
        ) : (
          <LinkElem to="/login">Log in / sign up</LinkElem>
        )}
      </li>
    </MenuElem>
  );
};

推荐答案

我不是特别热衷于 &.active 方法，如果你想构建一个样式化组件路由器独立，所以我创建了 asNavLink 来处理与此:

I'm not particularly keen on the &.active approach if you're trying to build a styled-component that is router independent, so I created asNavLink to deal with this:

npm install as-nav-link --save

给定一个组件:

const MyNavAnchor = styled(({
  as: T = 'a',
  active, // destructured so it is not passed to anchor in props
  ...props
}) => <T {...props} />)({
  textDecoration: 'blink',
  color: 'blue',
}, ({ active }) => (active && {
  color: 'red',
}));

你可以这样使用它:

 import asNavLink from 'as-nav-link';

 const MyNavLink = asNavLink(config)(MyNavAnchor);

它会将活动道具传递给您的样式组件.

And it will pass down the active prop to your styled component.

config 是可选的，可以包含一个 isActive 函数(根据 ReactRouter 的 NavLink)和一个 activeProp 字符串(传递的道具名称到您的组件).

config is optional and can include an isActive function (as per ReactRouter's NavLink) and an activeProp string (the prop name that is passed to your component).

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