挖掘PHP和Vue开发脑图功能中的灵感与创新

// 定义一个脑图主题的模型类
class MindMapTopic extends Model {
    // 定义数据库表名
    protected $table = 'mind_map_topics';
    
    // 定义与子主题的关联关系
    public function subTopics() {
        return $this->hasMany('MindMapSubTopic');
    }
}

// 定义一个脑图子主题的模型类
class MindMapSubTopic extends Model {
    // 定义数据库表名
    protected $table = 'mind_map_sub_topics';
    
    // 定义与主题的关联关系
    public function topic() {
        return $this->belongsTo('MindMapTopic');
    }
}

// 定义一个脑图控制器类
class MindMapController extends Controller {
    // 获取所有主题和对应的子主题
    public function getAllTopics() {
        $topics = MindMapTopic::with('subTopics')->get();
        return response()->json($topics);
    }
    
    // 创建一个新的主题
    public function createTopic(Request $request) {
        $topic = new MindMapTopic;
        $topic->title = $request->input('title');
        $topic->save();
        return response()->json($topic);
    }
    
    // 创建一个新的子主题
    public function createSubTopic(Request $request, $topicId) {
        $subTopic = new MindMapSubTopic;
        $subTopic->title = $request->input('title');
        $subTopic->topic_id = $topicId;
        $subTopic->save();
        return response()->json($subTopic);
    }
}

<template>
  <div>
    <div class="topic" v-for="topic in topics" :key="topic.id">
      <button @click="toggleSubTopics(topic.id)">{{ topic.title }}</button>
      <ul v-show="showSubTopics.includes(topic.id)">
        <li v-for="subTopic in topic.subTopics" :key="subTopic.id">
          {{ subTopic.title }}
        </li>
      </ul>
    </div>
    <input type="text" v-model="newTopicTitle" placeholder="请输入主题标题">
    <button @click="createTopic">创建主题</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      topics: [],
      showSubTopics: [],
      newTopicTitle: ""
    };
  },
  mounted() {
    this.getAllTopics();
  },
  methods: {
    getAllTopics() {
      // 通过API获取所有主题和对应的子主题
      axios.get('/api/topics')
        .then(response => {
          this.topics = response.data;
        })
        .catch(error => {
          console.error(error);
        });
    },
    toggleSubTopics(topicId) {
      // 切换显示子主题
      if (this.showSubTopics.includes(topicId)) {
        this.showSubTopics = this.showSubTopics.filter(id => id !== topicId);
      } else {
        this.showSubTopics.push(topicId);
      }
    },
    createTopic() {
      // 创建一个新的主题
      axios.post('/api/topics', { title: this.newTopicTitle })
        .then(response => {
          this.topics.push(response.data);
          this.newTopicTitle = "";
        })
        .catch(error => {
          console.error(error);
        });
    }
  }
};
</script>