Vue warning: Do not modify the prop "taskToEdit" directly

I am facing an issue with my props editToTask :

app.js:42491 [Vue warn]: To prevent overwriting the value when the parent component re-renders, avoid directly mutating a prop. Instead, use a data or computed property based on the prop's value. Mutated Prop: "taskToEdit"

Component TaskComponent.vue

<template>
...
        <button
          type="button"
          class="btn btn-secondary"
          data-toggle="modal"
          data-target="#editModal"
          @click="getTask(task.id)"
        >Editer</button>
      </li>
      <edit-task v-bind:taskToEdit="taskToEdit"></edit-task>
...
</template>

<script>
export default {
  data() {
    return {
      tasks: {},
      taskToEdit: "",
    };
  },

  methods: {

    getTask(id) {
      axios
        .get("http://localhost:3000/tasks/edit/" + id)
        .then((res) => (this.taskToEdit = res.name))
        .catch((error) => console.log(error));
    },
};
</script>

Component EditTaskComponent :

<template>
...
            <form>
              <div class="form-group">
                <label for>Nom des tâches</label>
                <textarea name="name" id="name" rows="4" class="form-control" v-model="taskToEdit"></textarea>
              </div>
            </form>
...
</template>

<script>
export default {
  props: ["taskToEdit"],
};
</script>

Answer №1

To make your task easier, you don't need to change props. It's better to use v-model as it solves the issue effectively. Check out how to utilize component v-model.

Start by adjusting your child component to work with v-model. Replace the props with a value prop in the child component that represents the task value.

<script>
export default {
  props: ["value"],
};
</script>

Instead of directly mutating the prop using v-model, emit an input event.

<textarea name="name" id="name" rows="4" class="form-control" :value="value" @input="$emit('input', $event.target.value)"></textarea>

In your parent component, you can now use v-model like this:

<edit-task v-model="taskToEdit"></edit-task>

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