vue--管理后台手把手搭建-----（5）
权限写完了，开始写主页面，如下
主要由侧边栏，头部，tag标签和主页面构成。
主要介绍tag标签。
a 侧边栏：
引用element-ui框架，从全局导航钩子开始说起，当我们拉取完用户token后，需要拉取用户权限，我们需要对拉取来的用户权限做处理，判断是否为超管权限或者为该用户应展示的权限内容，将其存放到vuex中，当我们渲染的时候，在从vuex中获取数据。
b tag标签：
（1）在store/modules/下新建tagsview.js
const tagsView = { state: {
visitedViews: [], //存放所有浏览过的且不重复的路由数据
cachedViews: []
},
mutations: {
ADD_VISITED_VIEWS: (state, view) => { //打开新页签--添加路由数据的方法
if (state.visitedViews.some(v => v.path === view.path))
return
state.visitedViews.push({
name: view.name,
path: view.path,
title: view.meta.title || 'no-name'
})
if (!view.meta.noCache) {
state.cachedViews.push(view.name)
}
},
DEL_VISITED_VIEWS: (state, view) => { //关闭页签--删除路由数据的方法
for (const [i, v] of state.visitedViews.entries()) {
if (v.path === view.path) {
state.visitedViews.splice(i, 1)
break
}
}
for (const i of state.cachedViews) {
if (i === view.name) {
const index = state.cachedViews.indexOf(i)
state.cachedViews.splice(index, 1)
break
}
}
},
DEL_OTHERS_VIEWS: (state, view) => {
for (const [i, v] of state.visitedViews.entries()) {
if (v.path === view.path) {
state.visitedViews = state.visitedViews.slice(i, i + 1)
break
}
}
for (const i of state.cachedViews) {
if (i === view.name) {
const index = state.cachedViews.indexOf(i)
state.cachedViews = state.cachedViews.slice(index, i + 1)
break
}
}
},
DEL_ALL_VIEWS: (state) => {
state.visitedViews = []
state.cachedViews = []
}
},
actions: {
addVisitedViews({ commit }, view) {
commit('ADD_VISITED_VIEWS', view)
},
delVisitedViews({ commit, state }, view) {
return new Promise((resolve) => {
commit('DEL_VISITED_VIEWS', view)
resolve([...state.visitedViews])
})
},
delOthersViews({ commit, state }, view) {
return new Promise((resolve) => {
commit('DEL_OTHERS_VIEWS', view)
resolve([...state.visitedViews])
})
},
delAllViews({ commit, state }) {
return new Promise((resolve) => {
commit('DEL_ALL_VIEWS')
resolve([...state.visitedViews])
})
}
}
}
export default tagsView
接着 在store中注册，在getter.js中引用
如何渲染，在vue页面编写如下：
<template> <div class="tags-view-container">
<scroll-pane class='tags-view-wrapper' ref='scrollPane'>
<router-link ref='tag' class="tags-view-item" :class="isActive(tag)?'active':''" v-for="tag in Array.from(visitedViews)" :to="tag.path" :key="tag.path" @contextmenu.prevent.native="openMenu(tag,$event)">
{{(tag.title)}}
<span class='el-icon-close' @click.prevent.stop='closeSelectedTag(tag)'></span>
</router-link>
</scroll-pane>
<!--<ul class='contextmenu' v-show="visible" :style="{left:left+'px',top:top+'px'}">-->
<!--<li @click="closeSelectedTag(selectedTag)">关闭</li>-->
<!--<li @click="closeOthersTags">关闭其他</li>-->
<!--<li @click="closeAllTags">关闭所有</li>-->
<!--</ul>-->
</div>
</template>
methods: { generateRoute() {
if (this.$route.name) {
return this.$route
}
return false
},
isActive(route) {//判断标签中的路由是否为当前路由
return route.path === this.$route.path || route.name === this.$route.name
},
addViewTags() {
const route = this.generateRoute()
if (!route) {
return false
}
this.$store.dispatch('addVisitedViews', route)
},
moveToCurrentTag() {
const tags = this.$refs.tag
this.$nextTick(() => {
for (const tag of tags) {
if (tag.to === this.$route.path) {
this.$refs.scrollPane.moveToTarget(tag.$el)
break
}
}
})
},
closeSelectedTag(view) {//在此会执行提交store中delVisitedViews方法，需要在该方法执行完删除数组中的数据后，再进行更改路由；
this.$store.dispatch('delVisitedViews', view).then((views) => {
if (this.isActive(view)) {
const latestView = views.slice(-1)[0]
if (latestView) {
this.$router.push(latestView.path)
} else {
this.$router.push('/')
}
}
})
},
closeOthersTags() {
this.$router.push(this.selectedTag.path)
this.$store.dispatch('delOthersViews', this.selectedTag).then(() => {
this.moveToCurrentTag()
})
},
closeAllTags() {
this.$store.dispatch('delAllViews')
this.$router.push('/')
},
openMenu(tag, e) {
this.visible = true
this.selectedTag = tag
this.left = e.clientX-180
this.top = e.clientY-40
},
closeMenu() {
this.visible = false
}
}
}
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