vuex module mode in nuxtjs - vuejs2

Question

I'm trying to implement a todo list using modules mode in the vuex store in nuxtjs but get the error this.$store.todo is undefined and cant find much about this relating to nuxt
Can anyone assist please I have
store index.js
export const state = () => ({
})
export const mutations = {
}
store todo.js
export const state = () => ({
todos: [],
})
export const mutations = {
mutations ...
}
export const actions = {
actions ...
}
export const getters = {
getters ...
}
index.vue page
<template>
<div>
<h2>Todos:</h2>
<p> Count: {{ doneTodosCount }} </p>
<ul v-if="todos.length > 0">
<li v-for="(todo, i) in todos" :key="i">
...
</li>
</ul>
<p v-else>Done!</p>
<div class="add-todo">
<input type="text" v-model="newTodoText">
<button #click="add">Add todo</button>
</div>
</div>
</template>
<script>
import { mapState, mapMutations, mapActions, mapGetters } from 'vuex'
export default {
name: 'app',
data () {
return {
newTodoText: ""
}
},
created () {
this.$store.todo.dispatch('loadData')
},
computed: {
...mapState(['todos', ]),
...mapGetters([ 'doneTodosCount', 'doneTodos'])
},
methods: {
toggle (todo) {
this.$store.todo.dispatch('toggleTodo', todo)
},
}
}
</script>
From what i read I thought this should work but doesn't
I should add it all works fine if i don't use modules mode and just have a single index.js setup
Many Thanks

Answer 1

You need to call it differently
this.$store.dispatch('todo/toggleTodo', todo)
Also better to call it in fetch method, not created