Challenges with Data Transfer in VueJS and VUEX

Here is the code snippet for my component:

<div id="event-picker">
  <template v-for="event in $store.state.events">
    <a href="#" v-on:click.prevent="$store.dispatch('prepareEventForm', event)">{{ event.artist }}</a>
  </template>
</div>

This is how my store's mutations look like:

prepareEventForm(state, event) {
  state.form.time = event.time
  state.form.date = event.date
  state.form.event = event.event
  state.form.artist = event.artist
  state.form.organizer = event.organizer
  state.form.location = event.location
  state.showForm = true
}

I am encountering an error which states

Cannot read property 'time' of undefined

Where do you think the issue might be?

UPDATE:

Below is my action method definition:

prepareEventForm({ commit }) {
  commit('prepareEventForm')
}

Answer №1

The main reason for the error you're encountering is due to the fact that the event object passed to your prepareEventForm mutation is actually undefined.

This occurs because when you invoke

$store.dispatch('prepareEventForm', event)
, it triggers your prepareEventForm action, with event being sent as the second argument.

To rectify this issue, you must include event as the second parameter within your action and transfer it as the second parameter in your commit function (which then executes the prepareEventForm mutation):

prepareEventForm({ commit }, event) {
  commit('prepareEventForm', event)
}

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