How to implement vue form submission and editing

To implement form submission and editing in Vue, you need to consider the following three aspects:

1. Binding and modification of form data
2. Data processing after submitting the form
3. Data backfilling when editing the form

Next, we will introduce the implementation method of Vue form submission and editing in detail from the above three aspects.

1. Binding and modification of form data

To implement binding and modification of form data in Vue, you need to use the v-model directive, through which you can bind the form into the data of the component instance. For example, we can implement a simple form binding through the following code:

<template>
  <form>
    <label>Name:</label>
    <input>

    <label>Age:</label>
    <input>

    <button>Submit</button>
  </form>
</template>

<script>
  export default {
    data() {
      return {
        name: &#39;&#39;,
        age: &#39;&#39;
      }
    },
    methods: {
      submitForm() {
        // 表单提交逻辑
      }
    }
  }
</script>

In the above code, we bind the name and age in the form to the name and age of the component instance through the v-model directive in the data. When the data in the form changes, Vue will automatically synchronize the changed data to the data of the component instance.

2. Data processing after submitting the form

After the form is submitted, we need to process the form data. Here we can implement form submission through event handling functions. In Vue, the event name of form submission is submit. We can bind the submitForm() method in the component to the submit event,

For example:

This way when the user submits the form , the submitForm() method will be called. In the submitForm() method, we can obtain the data in the form and process it accordingly. For example, we can submit the form data to the server for storage:

export default {
  data() {
    return {
      name: '',
      age: ''
    }
  },
  methods: {
    async submitForm() {
      const formData = {
        name: this.name,
        age: this.age
      }

      // 提交表单数据到服务器端
      await axios.post('/api/user', formData)

      // 处理完数据之后重置表单
      this.name = ''
      this.age = ''
    }
  }
}

When the form data is submitted to the server, we reset the data in the form, allowing the user to re-enter new data.

3. Data backfilling when editing the form

In practical applications, we usually need to support users to edit data, and then we need to backfill the data into the form. In Vue, we can get data from the server side in the mounted() hook function and backfill the data into the form. For example, we can use the following code to implement data backfilling when users edit data:

mounted() {
  // 获取用户数据并回填到表单中
  axios.get('/api/user/' + this.uid).then(response => {
    const data = response.data
    this.name = data.name
    this.age = data.age
  })
},

In the above code, we obtain data from the server and backfill the data into the form. What needs to be noted here is that we need to backfill the data into the component instance so that the data can be bound to the form.

Summary

Through the implementation of the above three aspects, we can efficiently implement Vue form submission and editing. It should be noted that in Vue, the data binding and event handling functions of the form can be implemented through the v-model and @event instructions. These instructions allow us to implement the form submission function simply and efficiently. At the same time, we can also obtain data from the server through the mounted() hook function and backfill the data into the form, so that users can easily edit data.

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