How the uniapp application implements food recommendation and ordering services

How the uniapp application implements food recommendation and ordering services

With the development of mobile Internet, food recommendation and ordering services have become an indispensable part of people's lives. As a cross-platform development framework, uniapp provides developers with a simple and fast way to develop multi-platform applications. This article will introduce how to use the uniapp framework to implement the functions of food recommendation and ordering services, and provide specific code examples.

1. Requirements Analysis
Before starting development, we first clarify the requirements and functions of the application. The functions of the example application in this article are as follows:

1. Display food list: Users can browse food lists in multiple categories, including pictures, names and introductions.
2. Food details: Users can click on a food item in the food list to view detailed information, including pictures, names, introductions, ratings, etc.
3. Meal ordering service: Users can choose one of the restaurants, order food, and fill in the delivery address and contact information.

2. Project construction

1. Create a uniapp project
   Use development tools such as HBuilder X to create a uniapp project and select the corresponding template.
2. Page layout
   Create pages for food lists and food details under the pages folder, and create food item components under the components folder. According to the needs, design the corresponding page layout, and use flex layout and css style to beautify the page.

3. Data preparation
Since this article only focuses on the implementation logic and code examples, we use static jsonData as sample data. In actual development, we need to call the interface to obtain dynamic data.

1. jsonData.js file
   Create a file named jsonData.js in the static folder of the project to store sample data.

The sample code is as follows:

const jsonData = {
  "foodList": [
    {
      "id": 1,
      "name": "麻辣香锅",
      "imgUrl": "http://example.com/1.jpg",
      "description": "正宗川味，麻辣扣人",
      "score": 4.5
    },
    {
      "id": 2,
      "name": "烤肉拌饭",
      "imgUrl": "http://example.com/2.jpg",
      "description": "烤肉好吃，拌饭香",
      "score": 4.2
    },
    ...
  ]
}

export default jsonData;

4. Food list page

1. Page logic
   In the vue file of the food list page, import jsonData.js obtains food data and renders the page. At the same time, bind a click event to each food item, and jump to the food details page when the user clicks.

The sample code is as follows:

<template>
  <view class="foodList">
    <view class="foodItem" v-for="item in foodList" :key="item.id" @click="goToDetail(item.id)">
      <image :src="item.imgUrl" :mode="'aspectFill'" class="foodImg"></image>
      <view class="info">
        <text class="name">{{ item.name }}</text>
        <text class="description">{{ item.description }}</text>
      </view>
    </view>
  </view>
</template>

<script>
import jsonData from '@/static/jsonData.js';

export default {
  data() {
    return {
      foodList: jsonData.foodList,
    };
  },
  methods: {
    goToDetail(id) {
      uni.navigateTo({
        url: '/pages/foodDetail?id=' + id,
      });
    },
  },
};
</script>

5. Food details page

1. Page logic
   In the vue file of the food details page, pass Obtain the corresponding food details data from the entered id parameter and render the page.

The sample code is as follows:

<template>
  <view class="foodDetail">
    <image :src="foodData.imgUrl" :mode="'aspectFill'" class="foodImg"></image>
    <view class="info">
      <text class="name">{{ foodData.name }}</text>
      <text class="description">{{ foodData.description }}</text>
      <text class="score">评分：{{ foodData.score }}</text>
    </view>
  </view>
</template>

<script>
import jsonData from '@/static/jsonData.js';

export default {
  data() {
    return {
      foodData: {},
    };
  },
  onLoad(option) {
    const id = option.id;
    this.getFoodDetail(id);
  },
  methods: {
    getFoodDetail(id) {
      const foodList = jsonData.foodList;
      this.foodData = foodList.find(item => item.id === parseInt(id));
    },
  },
};
</script>

6. Ordering service

1. Form settings
   In the food details page, add the ordering form and bind it Determine the corresponding data.

The sample code is as follows:

<template>
  <form class="orderForm">
    <input type="text" v-model="address" placeholder="请输入送餐地址" />
    <input type="tel" v-model="phone" placeholder="请输入联系电话" />
    <button type="submit" @click="orderFood">提交订单</button>
  </form>
</template>

<script>
export default {
  data() {
    return {
      address: '',
      phone: '',
    };
  },
  methods: {
    orderFood() {
      // TODO: 提交订单逻辑
    },
  },
};
</script>

At this point, we have implemented the functions of food recommendation and ordering services through the uniapp framework. Developers can expand and optimize according to their actual needs.

It should be noted that the sample code provided in this article is only for reference. In actual development, you need to make corresponding modifications and adjustments according to your own needs and situations. At the same time, the interaction logic and style in the code are for reference only, and developers can modify and beautify them according to their own needs.

Summary
This article introduces how to use the uniapp framework to implement the functions of food recommendation and ordering services, and gives specific code examples. Through these sample codes, developers can better understand the use and implementation principles of the uniapp framework, so as to better develop applications that meet user needs. At the same time, I hope this article will be helpful to developers who are learning and using the uniapp framework.

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