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Vue Router 相对路径转绝对路径

2019-09-29  本文已影响0人  於風聽語

因为 Vue Router 支持 嵌套路由,所以愉快的写起了相对路径。

const router = new VueRouter({
  routes: [
    { path: '/user', component: User,
      children: [
        {
          // 当 /user/profile 匹配成功,
          // UserProfile 会被渲染在 User 的 <router-view> 中
          path: 'profile',
          component: UserProfile
        },
        {
          // 当 /user/posts 匹配成功
          // UserPosts 会被渲染在 User 的 <router-view> 中
          path: 'posts',
          component: UserPosts
        }
      ]
    }
  ]
})

一时相对一时爽,可是此时非彼时。
想要根据 routes 渲染菜单,菜单就需要路由跳转,而我又没有写 name 命名路由,故如下跳转不可行:

this.$router.push({ name: 'user' })

可是 this.$router.options.routes 这货也拿不到绝对路径 path,故如下跳转也不可行:

this.$router.push({ path: '/user' })

何解

此解有三:

写绝对内心有点抵触,命名亦是个头疼的事情,那...

把拿到 this.$router.options.routes 的数据进行重组呗

function resolvePath(...paths) {
  let i = paths.length

  // 反向查找 / 开头的路径
  while (--i) {
    if (/^\//.test(paths[i])) break
  }
  
  return paths.slice(i)
    .join('/') // 加入 '/'
    .replace('//', '/') // 替换可能存在的 '//'
}
resolvePath('/', 'a', 'cb', '/www/', 'c') // "/www/c"
resolvePath('/', 'a', 'cb', 'www', 'c') // "/a/cb/www/c"

完整实例

假设路由:

const routes = [
  {
    "path": "/",
    "meta": {
      "name": "首页"
    },
    "children": [
      {
        "path": "",
        "redirect": "/dashboard"
      },
      {
        "path": "/dashboard",
        "name": "dashboard",
        "meta": {
          "name": "Dashboard"
        }
      },
      {
        "path": "user",
        "meta": {
          "name": "用户管理"
        },
        "children": [
          {
            "path": "list",
            "meta": {
              "name": "列表"
            }
          },
          {
            "path": "edit",
            "meta": {
              "name": "编辑/创建"
            }
          },
          {
            "path": "log",
            "meta": {
              "name": "日志"
            }
          }
        ]
      }
    ]
  },
  {
    "path": "/auth",
    "name": "auth"
  }
]

转换函数:

function resolvePath ( ...paths ) {
    let i = paths.length

    while ( --i ) {
        if ( /^\//.test( paths[i] ) ) break
    }

    return paths.slice( i )
        .join( '/' ) // 加入 '/'
        .replace( '//', '/' ) // 替换可能存在的 '//'
}

function restructure ( routes = [], base = '/' ) {
    return routes.map( route => {
        let { path, children = [] } = route

        path = resolvePath( base, path )

        if ( children.length > 0 ) {
            route.children = restructure( children, path )
        }

        return {
            ...route,
            path
        }
    } )
}

export default restructure

测试:

 // 假设 this.$router.options = '/'
const result = restructure (routes, '/')

console.log( JSON.stringify(result, null, 4) )

// 输出
[
    {
        "path": "/",
        "meta": {
            "name": "首页"
        },
        "children": [
            {
                "path": "/",
                "redirect": "/dashboard"
            },
            {
                "path": "/dashboard",
                "name": "dashboard",
                "meta": {
                    "name": "Dashboard"
                }
            },
            {
                "path": "/user",
                "meta": {
                    "name": "用户管理"
                },
                "children": [
                    {
                        "path": "/user/list",
                        "meta": {
                            "name": "列表"
                        }
                    },
                    {
                        "path": "/user/edit",
                        "meta": {
                            "name": "编辑/创建"
                        }
                    },
                    {
                        "path": "/user/log",
                        "meta": {
                            "name": "日志"
                        }
                    }
                ]
            }
        ]
    },
    {
        "path": "/auth",
        "name": "auth"
    }
]

---- Vinci, Sunday, September 29 2019, Sunny

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