javascript - vuex到底如何在页面调用actions?

Question

页面代码

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

actions中代码

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)
}

但是执行会报[vuex] Expects string as the type, but found function.求高手指点一下哪里出错了，非常感谢.
如果把上面代码改为下面的代码就可以执行

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)
    }
}

问一下，你说这段代码可以执行达到效果，那为什么不是this.$store.commit(types.DELETE_LIST, item)?

你actions.js中都用了types，是不是mutation-types.js文件出了问题呢？

Answer 2

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

没用过vuex，不过如果和Redux差不多的话，应该是这么用。

Answer 3

找到问题的答案了，感谢楼上的提醒，actions.js文件应该改成下面这样

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

或者还是用之前的写法，但是要新建一个mutation-types.js文件

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)
}