Encountering the error message "do not mutate props directly" while also trying to render a button

Whenever I try to pass my prop to a component, I encounter an error message. The prop in question is used to display a button element in the payment section. However, there are certain components where this button should not be displayed. Unfortunately, when I pass the prop, all components using the button end up hidden. Below is the code snippet for the parent component. My issue is similar to the one discussed in this thread, but the solution provided doesn't seem to work for me.

<payment :sharedButton="false"><payment>

This is the button code in my payment.vue file

<div class="col-lg-auto" v-if="unpaid.qr_code === 1 && sharedButton === true">
  <q-btn glossy
    size="md"
    :label="$t('Common.GetQrCode.Button')"
    @click="makePayment(unpaidIndex, true)" color="positive"
  >
  </q-btn>
</div>
export default{
  props: {
    sharedButton: {
      type: Boolean,
      default: true
    },

Here is the logic: hide the button when sharedButton is false, and show it when sharedButton is true.

Expected Result: Button should be hidden in certain components.

Current Result: All components with the button are hidden, and I am trying to avoid directly mutating props.

Answer №1

After experimenting with different approaches, I finally found a solution to my issue. It turns out that I couldn't directly assign a value, so I had to declare a variable named isHidden within the data() function.

data(){
   isHidden : false;
}

Then, I referenced it using

<payment-tab sharedButton = "isHidden">

Answer №2

The issue you are facing is due to directly mutating the prop in the child component without notifying the parent. To resolve this, synchronize the prop value between the child and parent components. Modify the prop value in the parent component to ensure that the new value is assigned to the child component as props are reactive.

If you have the option to change the value back to true in the parent component, you can do so.

<payment :sharedButton.sync="sharedButton"><payment>

(The second sharedButton will be the value stored in the parent component)

When you need to update the prop within the child component, simply use

this.$emit('update:sharedButton', false)

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