浅谈Vuex@2.3.0 中的 state 支持函数申明
作者：M.M.F
这篇文章主要介绍了浅谈Vuex@2.3.0 中的 state 支持函数申明，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧
vuex 2.3.0 的发布说明: Modules can now declare state using a function - this allows the same module definition to be reused (e.g. multiple times in the same store, or in multiple stores)
假如你 vuex 的模块有多个格式是完全一样的, 这时候就可以把这个模块公共出来, 在 Vuex 实例里引用, 如:
import api from '~api'
const actions = {
async ['get']({commit, rootState: {route: { path }}}, config = {}) {
const { data: { code, data } } = await api.post(config.url, config.data)
if (code === 1001) commit('receive', data)
}
}
const mutations = {
['receive'](state, data) {
state.data = [].concat(data)
},
['modify'](state, payload) {
const index = state.data.findIndex(item => item.id === payload.id)
if (index > -1) {
state.data.splice(index, 1, payload)
}
},
['insert'](state, payload) {
state.data = [payload].concat(state.data)
},
['remove'](state, id) {
const index = state.data.findIndex(item => item.id === id)
state.data.splice(index, 1)
}
}
const getters = {
['get'](state) {
return state.data
}
}
export const _actions = actions
export const _mutations = mutations
export const _getters = getters
export default {
namespaced: true,
actions,
mutations,
getters
}
import Vue from 'vue'
import Vuex from 'vuex'
import lists from './general/lists'
Vue.use(Vuex)
export default new Vuex.Store({
namespaced: true,
modules: {
base: {
namespaced: true,
modules: {
app: {...lists, state: { lists: { data: [], total: 0, current_page: 1 } }},
platform: {...lists, state: { lists: { data: [], total: 0, current_page: 1 } }},
product: {
namespaced: true,
modules: {
category: {...lists, state: { lists: { data: [], total: 0, current_page: 1 } }},
}
},
keyword: {
namespaced: true,
modules: {
username: {...lists, state: { lists: { data: [], total: 0, current_page: 1 } }},
}
},
}
},
buzz: {
namespaced: true,
modules: {
shop: {...lists, state: { lists: { data: [], total: 0, current_page: 1 } }},
}
}
})
但是 state 却需要每个单独设置, 如果直接设置在lists里, 会导致 state 对象被引用共享
在 vuex@2.3.0 中, 这个问题将不存在
import api from '~api'
const actions = {
async ['get']({commit, rootState: {route: { path }}}, config = {}) {
const { data: { code, data } } = await api.post(config.url, config.data)
if (code === 1001) commit('receive', data)
}
}
const mutations = {
['receive'](state, data) {
state.data = [].concat(data)
},
['modify'](state, payload) {
const index = state.data.findIndex(item => item.id === payload.id)
if (index > -1) {
state.data.splice(index, 1, payload)
}
},
['insert'](state, payload) {
state.data = [payload].concat(state.data)
},
['remove'](state, id) {
const index = state.data.findIndex(item => item.id === id)
state.data.splice(index, 1)
}
}
const getters = {
['get'](state) {
return state.data
}
}
export const _actions = actions
export const _mutations = mutations
export const _getters = getters
export default {
namespaced: true,
state() {
return { lists: { data: [], total: 0, current_page: 1 } }
},
actions,
mutations,
getters
}
import Vue from 'vue'
import Vuex from 'vuex'
import lists from './general/lists'
Vue.use(Vuex)
export default new Vuex.Store({
namespaced: true,
modules: {
base: {
namespaced: true,
modules: {
app: lists,
platform: lists,
product: {
namespaced: true,
modules: {
category: lists,
}
},
keyword: {
namespaced: true,
modules: {
username: lists,
}
},
}
},
buzz: {
namespaced: true,
modules: {
shop: lists,
}
}
})
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。