Encountering a JavaScript error when trying to manage autocomplete location information in the Google Maps API within VueJS 2

Question

Encountering a JavaScript error when trying to manage autocomplete location information in the Google Maps API within VueJS 2

I recently implemented a search input form in my VueJS 2 application, allowing users to search for a location and view a list of nearby pharmacies on the page. However, I encountered an issue with the autocomplete feature not working properly. An error message stating "Can not read property 'find' of undefined" is being displayed. The relevant code snippet is provided below:

<input
   id="District"
   name="District"
   class="form-control"
   data-live-search="true"
   list="places-list"
   v-model="searchString"
   @input="handleAutocomplete($event.target.value)"
   />
<datalist id="places-list">
   <option
      v-for="place in placesList"
      :value="place['description']"
      label=""
      :key="place['place_id']"
      >
      <!-- {{ place.name }} -->
   </option>
</datalist>

<!-- The rest of the component's code goes here... -->

If anyone has encountered this error before and knows how to resolve it, your assistance would be greatly appreciated. Thank you!

javascript vue.js

Answer 1

Answer №1

The error is likely occurring because the handleAutocomplete method is assigning undefined to this.placeList. This could be due to the API not returning a valid JSON result. For example, when querying for "foo", an invalid JSON response is received:

foo{ "predictions" : [ ... ], "status" : "OK" }

To resolve this issue, it is suggested to remove the "foo" from the response to make it valid JSON (and parseable by Axios). While fixing the API is the ideal solution, adding some defensive programming can also help:

try {
    const {
        data: {
            predictions
        }
    } = await this.$axios.get(
        `https://purnohealth.com/autocomplete.php?input=${query}`
    );
    if (!Array.isArray(predictions) {
        throw "Predictions is not an array.";
    }
    this.placesList = predictions;
    this.handleSearch(query);
} catch (error) {
    console.log(error);
}

Answer 2

The error is likely occurring because the handleAutocomplete method is assigning undefined to this.placeList. This could be due to the API not returning a valid JSON result. For example, when querying for "foo", an invalid JSON response is received:

foo{ "predictions" : [ ... ], "status" : "OK" }

To resolve this issue, it is suggested to remove the "foo" from the response to make it valid JSON (and parseable by Axios). While fixing the API is the ideal solution, adding some defensive programming can also help:

try {
    const {
        data: {
            predictions
        }
    } = await this.$axios.get(
        `https://purnohealth.com/autocomplete.php?input=${query}`
    );
    if (!Array.isArray(predictions) {
        throw "Predictions is not an array.";
    }
    this.placesList = predictions;
    this.handleSearch(query);
} catch (error) {
    console.log(error);
}

Encountering a JavaScript error when trying to manage autocomplete location information in the Google Maps API within VueJS 2

Answer №1

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