SoFunction
Updated on 2025-04-04

Tips and problems encountered when using modules in vuex

The pitfalls encountered when using modules vuex

Actually, it's not a trick, I just didn't pay attention to the official API. When defining the module, I need to add a namespace to the module namespaced: true

attribute, otherwise the naming cannot be exposed, resulting in errors such as [vuex] module namespace not found in mapState().

Basic usage of modules in vuex

1. store file structure

- src
- components
- store
    -
    -modules
        -
        -

2.1 - Manually introduce modules

import Vue from 'vue'
import Vuex from 'vuex'
import bus from './module/bus'
import app from './module/app'
(Vuex)
export default new ({
    state: {
        // Here is the root vuex state    },
    mutations: {
        // Here is the root vuex state    },
    actions: {
        // Here is the root vuex state    },
    modules: { // Sub-vuex status module registration        namespaced: true, // In order to solve the problem of naming conflicts between different modules        app,
        bus
    }
})

2.2 - Dynamic introduction of modules

import Vue from 'vue'
import Vuex from 'vuex'
(Vuex)
const dynamicModules = {}
const files = ('.', true, /\.js$/)
const dynamicImportModules = (modules, file, splits, index = 0) => {
    if (index == 0 && splits[0] == 'modules') {
        ++index
    }
    if ( == index + 1) {
        if ('index' == splits[index]) {
            modules[splits[index - 1]] = files(file).default
        } else {
            [splits[index]] = files(file).default
        }
    } else {
        let tmpModules = {}
        if ('index' == splits[index + 1]) {
            tmpModules = modules
        } else {
            modules[splits[index]] = modules[splits[index]] ? modules[splits[index]] : {namespaced: true, modules: {}}
            tmpModules = modules[splits[index]]
        }
        dynamicImportModules(tmpModules, file, splits, ++index)
    }
}
().filter(file => file != './').forEach(file => {
    let splits = (/(\.\/|\.js)/g, '').split('\/');
    dynamicImportModules(dynamicModules, file, splits)
})
export default new ({
    modules: dynamicModules,
    strict: .NODE_ENV !== 'production'
})

3. File content

const state = {
    user: {}, // Status data that needs to be managed}
const mutations = {
    setUser (state, val) {
             = val
        }
}
const getters = {}
const actions = {}
export default {
    namespaced: true,
    state,
    mutations,
    getters,
    actions
}

4.1 Use the page

// When using mutations, getters, and actions in the module, add the module name, for example, when using commint to execute mutations// Format: Module name/mutations in the modulethis.$("app/setUser", user)
// Also add the module name when obtaining attributesthis.$ 

Used in 4.2

// Introduce the store here is equivalent to this.$store in the pageimport store from '@/store'
export const setCurUser = (user) => {
    let curUser = 
    if(!curUser) {
        ("app/setUser", user)
        return user
    }
    
    return curUser
}

5. Configuration

import Vue from 'vue'
import App from './App'
import router from './router'
import store from './store'
new Vue({
  el: '#app',
  router,
  store,
  render: h => h(App)
})

The above is personal experience. I hope you can give you a reference and I hope you can support me more.