Vuex ORMを使用して複雑な状態管理を簡素化する方法

npm install @vuex-orm/core

import Vuex from 'vuex';
import VuexORM from '@vuex-orm/core';
import { createStore } from 'vuex';

const store = createStore({
  plugins: [VuexORM.install()],
  state: {},
  mutations: {},
  actions: {},
});

import { Model } from '@vuex-orm/core';

class Post extends Model {
  static entity = 'posts';

  static fields() {
    return {
      id: this.attr(null),
      title: this.attr(''),
      body: this.attr(''),
    };
  }
}

export default Post;

import { Model } from '@vuex-orm/core';
import Comment from './Comment';

class Post extends Model {
  static entity = 'posts';

  static fields() {
    return {
      id: this.attr(null),
      title: this.attr(''),
      body: this.attr(''),
      comments: this.hasMany(Comment),
    };
  }
}

Post.create({
  data: {
    title: 'New Post',
    body: 'This is the body of the post',
  }
});

const posts = Post.all();

const posts = Post.where('title', 'like', 'Vuex ORM%').get();

Post.where('id', 1).update({
  data: {
    title: 'Updated Post',
    body: 'Updated body of the post',
  }
});

Post.where('id', 1).delete();

<template>
  <div v-for="post in posts" :key="post.id">
    <h3>{{ post.title }}</h3>
    <p>{{ post.body }}</p>
  </div>
</template>

<script>
import { mapState } from 'vuex';

export default {
  computed: {
    ...mapState('entities/posts', {
      posts: state => state.all(),
    }),
  },
};
</script>

try {
  Post.create({ data: { title: 'Error Post', body: 'This will fail' } });
} catch (error) {
  console.error('Error creating post:', error);
}