Bootstrap-vue: how to pass data to modal?

This works just fine:

HTML:

<div id="app">
  <ul>
    <li v-for="item in items">
      {{ item.first_name }}
      <b-button size="sm" v-b-modal="'myModal'" user="'item'" click="sendInfo(item)">
        Saluta {{item.first_name}}
      </b-button>
    </li>
  </ul>

  <b-modal id="myModal">
    Hello {{selectedUser.first_name}} {{selectedUser.last_name}} !
  </b-modal>
</div>

JAVASCRIPT:

new Vue({
  el: '#app',
  data: {
    items :
    [
        { first_name: 'Dickerson', last_name: 'Macdonald' },
        { first_name: 'Larsen', last_name: 'Shaw' },
        { first_name: 'Geneva', last_name: 'Wilson' },
        { first_name: 'Jami', last_name: 'Carney' }
    ],
    selectedUser: '',
  }, 
  methods: {
    sendInfo(item) {
        this.selectedUser = item;
    }
  }

})

What it does is:

1) Execute a method named sendInfo

2) That methods will set the selectedUser variable inside data with the selected user which information is sent thanks to the v-on:click (@click) directive depending on the v-for iteration. Because of that, each button will send the right information.

3) Display the information inside the modal

You can use vuex and your components won't have to be in the same file or related.

Component which will open the modal:

<ul>
  <li v-for="item in items">{{ item.first_name }} 
    <b-button @click="$store.dispatch('modals/openModal', { data: item, modalId: 'myModal' })">
      Saluta {{item.first_name}}
    </b-button> 
  </li>
</ul>

Modal's template:

<b-modal id="myModal">
  Hello {{selectedUser.first_name}} {{selectedUser.last_name}} !
</b-modal>

Modal's computed property:

selectedUser() { return this.$store.state.modals.modalData },

Vuex module (modals.js):

const state = {
 modalData: {},
}

const mutations = {
  setModalData(state, data) { state.modalData = data },
}

const actions = {
  openModal(context, data) {
    context.commit('setModalData', data.data)
    $('#' + data.modalId).modal('show')
  },
}