修复四级菜单无法显示问题

@@ -27,7 +27,7 @@ const permission = {
           const sdata = JSON.parse(JSON.stringify(res.data))
           const sdata = JSON.parse(JSON.stringify(res.data))
           const rdata = JSON.parse(JSON.stringify(res.data))
           const rdata = JSON.parse(JSON.stringify(res.data))
           const sidebarRoutes = filterAsyncRouter(sdata)
           const sidebarRoutes = filterAsyncRouter(sdata)
-          const rewriteRoutes = filterAsyncRouter(rdata, true)
+          const rewriteRoutes = filterAsyncRouter(rdata, false, true)
           rewriteRoutes.push({ path: '*', redirect: '/404', hidden: true })
           rewriteRoutes.push({ path: '*', redirect: '/404', hidden: true })
           commit('SET_ROUTES', rewriteRoutes)
           commit('SET_ROUTES', rewriteRoutes)
           commit('SET_SIDEBAR_ROUTERS', sidebarRoutes)
           commit('SET_SIDEBAR_ROUTERS', sidebarRoutes)
@@ -39,9 +39,9 @@ const permission = {
 }
 }
 
 
 // 遍历后台传来的路由字符串，转换为组件对象
 // 遍历后台传来的路由字符串，转换为组件对象
-function filterAsyncRouter(asyncRouterMap, isRewrite = false) {
+function filterAsyncRouter(asyncRouterMap, lastRouter = false, type = false) {
   return asyncRouterMap.filter(route => {
   return asyncRouterMap.filter(route => {
-    if (isRewrite && route.children) {
+    if (type && route.children) {
       route.children = filterChildren(route.children)
       route.children = filterChildren(route.children)
     }
     }
     if (route.component) {
     if (route.component) {
@@ -55,13 +55,16 @@ function filterAsyncRouter(asyncRouterMap, isRewrite = false) {
       }
       }
     }
     }
     if (route.children != null && route.children && route.children.length) {
     if (route.children != null && route.children && route.children.length) {
-      route.children = filterAsyncRouter(route.children, route, isRewrite)
+      route.children = filterAsyncRouter(route.children, route, type)
+    } else {
+      delete route['children']
+      delete route['redirect']
     }
     }
     return true
     return true
   })
   })
 }
 }
 
 
-function filterChildren(childrenMap) {
+function filterChildren(childrenMap, lastRouter = false) {
   var children = []
   var children = []
   childrenMap.forEach((el, index) => {
   childrenMap.forEach((el, index) => {
     if (el.children && el.children.length) {
     if (el.children && el.children.length) {
@@ -77,6 +80,9 @@ function filterChildren(childrenMap) {
         return
         return
       }
       }
     }
     }
+    if (lastRouter) {
+      el.path = lastRouter.path + '/' + el.path
+    }
     children = children.concat(el)
     children = children.concat(el)
   })
   })
   return children
   return children