Implementation Guide for UniApp to Implement Food Recommendations and Restaurant Reservations

UniApp’s Guide to Implementing Food Recommendations and Restaurant Reservations

Introduction:
In modern society, people’s pursuit of food has become a way of life. With the popularity of smartphones and the development of mobile Internet, more and more people are beginning to use mobile apps to find food recommendations and make restaurant reservations. This article will introduce how to use the UniApp framework to implement such a feature-rich food recommendation and restaurant reservation application.

1. Preparation

1. Install the UniApp development environment
   You can download and install the UniApp development tools from the official website (https://uniapp.dcloud.io/).
2. Data preparation
   Developing this application requires some food recommendation and restaurant information data. This data can be obtained from some open food websites and stored in the backend database. It is recommended to use MySQL database and Node.js to build the back-end server.

2. Page design and development

1. Home page design and development
   a. Create a home page to display a list of food recommendations.
   b. Use the uni-list component to display a list of recommended food, in which each item displays information such as the picture, name, and rating of the food.

Sample code:

<template>
  <view>
    <uni-list>
      <uni-list-item v-for="item in list">
        <image :src="item.image"></image>
        <text>{{ item.name }}</text>
        <text>{{ item.rating }}</text>
      </uni-list-item>
    </uni-list>
  </view>
</template>

<script>
export default {
  data() {
    return {
      list: [] // 美食推荐列表数据
    }
  },
  mounted() {
    // 获取美食推荐列表数据
    this.getList()
  },
  methods: {
    getList() {
      // 调用后端API获取美食推荐列表数据
      // 使用uni.request()函数发送HTTP请求
      uni.request({
        url: 'http://localhost:3000/api/recommendation',
        method: 'GET',
        success: (res) => {
          this.list = res.data
        },
        fail: (err) => {
          console.log(err)
        }
      })
    }
  }
}
</script>

2. Design and development of restaurant details page
   a. Create a restaurant details page to display detailed information about the restaurant.
   b. Use uni-grid layout to display pictures and basic information of the restaurant, and use uni-list to display user reviews.

Sample code:

<template>
  <view>
    <uni-grid>
      <uni-grid-item v-for="item in restaurant.images" :key="item">
        <image :src="item"></image>
      </uni-grid-item>
    </uni-grid>
    <text>{{ restaurant.name }}</text>
    <text>{{ restaurant.address }}</text>
    <text>{{ restaurant.telephone }}</text>
    <uni-list>
      <uni-list-item v-for="review in restaurant.reviews">
        <text>{{ review.content }}</text>
        <text>{{ review.rating }}</text>
      </uni-list-item>
    </uni-list>
  </view>
</template>

<script>
export default {
  data() {
    return {
      restaurant: {} // 餐厅详情数据
    }
  },
  mounted() {
    // 获取餐厅详情数据
    this.getRestaurant()
  },
  methods: {
    getRestaurant() {
      // 调用后端API获取餐厅详情数据
      // 使用uni.request()函数发送HTTP请求
      uni.request({
        url: 'http://localhost:3000/api/restaurant/1', // 1表示餐厅的ID
        method: 'GET',
        success: (res) => {
          this.restaurant = res.data
        },
        fail: (err) => {
          console.log(err)
        }
      })
    }
  }
}
</script>

3. Back-end API design and development

1. Implementing the food recommendation list API
   a. In Node.js Use Express framework to build back-end server.
   b. Create a GET request route to obtain food recommendation list data. You can query the database and return data.

Sample code:

const express = require('express')
const app = express()

app.get('/api/recommendation', (req, res) => {
  // 查询数据库获取美食推荐列表数据
  // 使用res.json()函数返回数据
  const list = [
    { id: 1, name: '美食A', image: 'xxx', rating: 4.5 },
    { id: 2, name: '美食B', image: 'xxx', rating: 4.8 },
    { id: 3, name: '美食C', image: 'xxx', rating: 4.2 }
  ]
  res.json(list)
})

app.listen(3000, () => {
  console.log('Server is running on port 3000')
})

2. Implementing the restaurant details API
   a. Create a route for GET requests to obtain restaurant details based on the restaurant ID.

Sample code:

app.get('/api/restaurant/:id', (req, res) => {
  const id = req.params.id
  // 根据餐厅ID查询数据库获取餐厅详情数据
  // 使用res.json()函数返回数据
  const restaurant = {
    id: 1,
    name: '餐厅A',
    images: ['xxx', 'xxx', 'xxx'],
    address: 'xxx',
    telephone: 'xxx',
    reviews: [
      { id: 1, content: '好吃啊', rating: 4.5 },
      { id: 2, content: '太棒了', rating: 4.8 },
      { id: 3, content: '一般般', rating: 4.2 }
    ]
  }
  res.json(restaurant)
})

4. Implement the restaurant reservation function

1. Add a reservation button to the restaurant details page
   Add a reservation button to the restaurant details page button and bind a click event.

Sample code:

<button @click="book">预订餐厅</button>

2. Reservation function implementation
   Add the book method in the methods of the restaurant details page to handle the reservation operation.

Sample code:

methods: {
  book() {
    // 跳转到预订页面，并传递餐厅ID
    uni.navigateTo({
      url: '/pages/booking?id=' + this.restaurant.id
    })
  }
}

3. Booking page design and development
   a. Create a booking page to display the booking form.
   b. Use the uni-form component to display the input box of the reservation form.
   c. Use the uni-button component to add a submit button and handle the subscription operation in the click event.

Sample code:

<template>
  <view>
    <uni-form>
      <uni-form-item label="姓名">
        <uni-input v-model="name"></uni-input>
      </uni-form-item>
      <uni-form-item label="电话">
        <uni-input v-model="phone"></uni-input>
      </uni-form-item>
    </uni-form>
    <uni-button @click="submit">提交</uni-button>
  </view>
</template>

<script>
export default {
  data() {
    return {
      name: '',
      phone: '',
      restaurantId: ''
    }
  },
  onLoad(options) {
    this.restaurantId = options.id
  },
  methods: {
    submit() {
      // 调用后端API进行预订操作
      // 使用uni.request()函数发送HTTP请求
      uni.request({
        url: 'http://localhost:3000/api/booking',
        method: 'POST',
        data: {
          name: this.name,
          phone: this.phone,
          restaurantId: this.restaurantId
        },
        success: (res) => {
          if (res.data.success) {
            uni.showToast({
              title: '预订成功'
            })
          } else {
            uni.showToast({
              title: '预订失败'
            })
          }
        },
        fail: (err) => {
          console.log(err)
        }
      })
    }
  }
}
</script>

4. Backend API implements reservation function
   a. Create a route for POST requests to handle restaurant reservation operations.

Sample code:

app.post('/api/booking', (req, res) => {
  const { name, phone, restaurantId } = req.body
  // 处理预订操作，例如保存预订信息到数据库
  // 使用res.json()函数返回预订结果
  const success = true
  res.json({ success })
})

5. Summary
This article introduces how to use the UniApp framework to implement a feature-rich food recommendation and restaurant reservation application. Through steps such as page design and development, back-end API design and development, we can implement a user-friendly food recommendation and restaurant reservation function, and provide a convenient reservation process so that users can enjoy delicious food and get a better dining experience. Through this example, I believe readers already have a certain understanding of using UniApp to develop similar applications. I hope readers can further explore more possibilities of mobile application development based on the guidance of this article.

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