The Vue.js error message "Unable to access property 'array_name' as it is undefined" indicates an issue with

I'm currently working on fetching data using Axios requests and storing it in an array. Below is the code I have been using:

props: [
      'products',
    ],
    data: function () {
      return {
        algolia: '',
        products_data : [],
      };
    },
mounted() {
        this.products_data = this.products;      
      }
methods: {
      find () {
        let new_product = {};

        axios.get('/product/find?barcode=' + this.barcode)
        .then(function (res) {
          new_product.name = resp.data.name
          new_product.barcode = resp.data.barcode
          new_product.unit = resp.data.unit

          this.products_data.push(new_product);
        })
        .catch(function (err) {
          console.log(err);
        })
     },
}

Encountering the error

Cannot read property 'products_data' of undefined
due to the line
this.products_data.push(new_product);
. As a beginner in Vue, any assistance would be greatly appreciated.

Thanks

Answer №1

I have made some updates to the code by removing the function syntax and implementing arrow functions instead.

find () {
    let new_item = {};

    axios.get('/product/find?barcode=' + this.barcode)
    .then((response) => {
      new_item.name = response.data.name
      new_item.barcode = response.data.barcode
      new_item.unit = response.data.unit

      this.items_data.push(new_item);
    })
    .catch((error)=> {
      console.log(error);
    })
 }

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