javascript - vuex到底如何在頁面上呼叫actions?

Question

頁面程式碼

methods: {
    ...mapActions(['addList', 'delList']),
    add (value) {
      this.addList({title: value})
    },
    del (item) {
      this.delList(item)
    }
}

actions中程式碼

import * as types from './mutations'
export const addList = ({commit}, item) => {
  commit(types.ADD_LIST, item)
}    
export const delList = ({commit}, item) => {
  commit(types.DELETE_LIST, item)
}

但是執行會報[vuex] Expects string as the type, but found function.求高手指點一下哪裡出錯了，非常感謝.
如果把上面程式碼改為下面的程式碼就可以執行

methods: {
    add (value) {
      this.$store.commit('ADD_LIST', {title: value})
    },
    del (item) {
      this.$store.commit('DELETE_LIST', item)
    }
}

Answer 1

methods: {
    add (value) {
      this.$store.commit('ADD_LIST', {title: value})
    },
    del (item) {
      this.$store.commit('DELETE_LIST', item)
    }
}

問一下，你說這段程式碼可以執行達到效果，那為什麼不是this.$store.commit(types.DELETE_LIST, item)?

你actions.js中都用了types，是不是mutation-types.js檔案出了問題呢？

Answer 2

export const addList = (commit) => (item) => {
  commit(types.ADD_LIST, item)
} 

沒用過vuex，不過如果跟Redux差不多的話，應該是這麼用。

Answer 3

找到問題的答案了，感謝樓上的提醒，actions.js檔案應該改成下面這樣

export const addList = ({commit}, item) => {
  commit('ADD_LIST', item)
}    
export const delList = ({commit}, item) => {
  commit('DELETE_LIST', item)
}

或還是用之前的寫法，但要新建一個mutation-types.js檔

export const ADD_LIST = 'ADD_LIST'
export const DELETE_LIST = 'DELETE_LIST'

actions.js

import * as types from './mutation-types'
export const addList = ({commit}, item) => {
  commit(types.ADD_LIST, item)
}    
export const delList = ({commit}, item) => {
  commit(types.DELETE_LIST, item)
}