首頁  >  文章  >  web前端  >  關於Vuex@2.3.0 中的 state 支援函數的申明

關於Vuex@2.3.0 中的 state 支援函數的申明

不言
不言原創
2018-06-29 16:51:361483瀏覽

這篇文章主要介紹了淺談Vuex@2.3.0 中的 state 支援函數申明,內容蠻不錯的,現在分享給大家,也給大家做個參考。

vuex 2.3.0 的發布說明: 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 in multiple#s) in the same store, or in multiple# stores) in multiple#s) in ##假如你vuex 的模組有多個格式是完全一樣的, 這時候就可以把這個模組公共出來, 在Vuex 實例裡引用, 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 卻需要每個單獨設定, 如果直接設定在lists裡, 會導致state 物件被引用共享

在vuex@2.3. 0 中, 這個問題將不存在

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內容,希望對大家的學習有所幫助,更多相關內容請關注PHP中文網!

相關建議:

VUEJS 2.0 子元件存取/呼叫父元件


關於Vue2 SSR快取Api 資料的方法


以上是關於Vuex@2.3.0 中的 state 支援函數的申明的詳細內容。更多資訊請關注PHP中文網其他相關文章!

陳述:
本文內容由網友自願投稿,版權歸原作者所有。本站不承擔相應的法律責任。如發現涉嫌抄襲或侵權的內容,請聯絡admin@php.cn