How to implement electronic ordering and takeout delivery in uniapp

How to implement electronic ordering and takeout delivery in uni-app

With the rapid development of the mobile Internet, electronic ordering and takeout delivery have become a part of people’s lives daily needs. In order to meet the needs of users, many catering companies have begun to adopt electronic ordering and takeout delivery systems to provide more convenient services. This article will introduce how to implement electronic ordering and takeout delivery in uni-app, and provide specific code examples.

1. Preparation
Before starting development, we first need to install the uni-app development environment and ensure that the back-end interface has been built. The backend can be implemented using technology stacks such as Node.js. This article does not involve the specific implementation of the backend.

2. Interface Design
Before realizing the functions of electronic ordering and takeout delivery, we need to design the relevant interface first. The interface design needs to take into account the user's operating habits and processes to ensure that users can conveniently order and deliver food.

1. Home page: Displays the restaurant’s logo, name, recommended dishes and other information, and provides functions such as search, filtering and classification.
2. Menu page: Displays the restaurant's menu list, including the name, picture, price, quantity and other information of the dishes. Users can select dishes by clicking the Add button and modify the number of dishes.
3. Shopping cart page: Displays the list of dishes and the total amount that the user has selected. The user can add, reduce and delete dishes.
4. Order page: Displays the order information submitted by the user, including shipping address, contact person, and delivery time.
5. Takeaway page: Provides users with the opportunity to fill in information such as delivery address and contact person, confirm the order and make payment.

3. Realizing electronic ordering and takeout delivery functions
To realize electronic ordering and takeout delivery functions in uni-app, we mainly need the following steps:

1. Get menu data: In the menu page, we need to get the restaurant's menu data from the back-end interface and display the data on the page. You can use the uni.request() method to send a network request and obtain the data returned by the backend interface.

Sample code:

// 菜单页
export default {
  data() {
    return {
      menuList: [] // 菜单列表
    }
  },
  mounted() {
    this.getMenuList()
  },
  methods: {
    getMenuList() {
      uni.request({
        url: '接口地址',
        success: (res) => {
          this.menuList = res.data.menuList
        }
      })
    }
  }
}

2. Add dishes to the shopping cart: In the menu page, when the user clicks the add button, we need to add the selected dishes to the shopping cart middle. You can use vuex to store shopping cart data.

Sample code:

// 菜单页
export default {
  methods: {
    addToCart(item) {
      this.$store.commit('addToCart', item)
    }
  }
}

// store.js
export default new Vuex.Store({
  state: {
    cartList: [] // 购物车列表
  },
  mutations: {
    addToCart(state, item) {
      state.cartList.push(item)
    }
  }
})

3. Shopping cart operation: In the shopping cart page, users can add, reduce and delete items in the shopping cart. You can use vuex to update shopping cart data.

Sample code:

// 购物车页
export default {
  computed: {
    cartList() {
      return this.$store.state.cartList
    },
    totalPrice() {
      let total = 0
      for (let item of this.cartList) {
        total += item.price * item.quantity
      }
      return total
    }
  },
  methods: {
    increase(item) {
      this.$store.commit('increase', item)
    },
    decrease(item) {
      this.$store.commit('decrease', item)
    },
    remove(item) {
      this.$store.commit('remove', item)
    }
  }
}

// store.js
export default new Vuex.Store({
  mutations: {
    increase(state, item) {
      item.quantity++
    },
    decrease(state, item) {
      if (item.quantity > 1) {
        item.quantity--
      }
    },
    remove(state, item) {
      const index = state.cartList.indexOf(item)
      state.cartList.splice(index, 1)
    }
  }
})

4. Submit order and payment: On the takeout page, users need to fill in information such as delivery address and contact person, submit the order and pay. You can use the uni.request() method to send order information to the backend interface, and the backend interface will return the payment result.

Sample code:

// 外卖页
export default {
  data() {
    return {
      address: '', // 配送地址
      contact: '', // 联系人
      payResult: '' // 支付结果
    }
  },
  methods: {
    submitOrder() {
      uni.request({
        url: '接口地址',
        method: 'POST',
        data: {
          address: this.address,
          contact: this.contact,
          cartList: this.$store.state.cartList
        },
        success: (res) => {
          this.payOrder(res.data.orderId)
        }
      })
    },
    payOrder(orderId) {
      uni.requestPayment({
        timeStamp: '',
        nonceStr: '',
        package: '',
        signType: '',
        paySign: '',
        success: (res) => {
          this.payResult = '支付成功'
        },
        fail: (res) => {
          this.payResult = '支付失败'
        }
      })
    }
  }
}

Summary:
This article introduces how to implement electronic ordering and takeout delivery functions in uni-app, and provides specific code examples . Through the above methods, we can easily implement electronic ordering and takeout delivery systems to provide more convenient services. Of course, in actual development, appropriate adjustments and expansions need to be made according to specific needs. I hope this article can be helpful to your development work.

The above is the detailed content of How to implement electronic ordering and takeout delivery in uniapp. For more information, please follow other related articles on the PHP Chinese website!