anchor.diff:            this.$set(this.prizes, key+1, this.prizes[key])
             this.$set(this.prizes, key, temp)
           }
  -
         }
       })
     </script>
  
positive.code:   <div class="card-header">
      <h4 class="card-title"><%= I18n.t('.prizes.title') %></h4>
    </div>
    <div class="card-body">
      <form method="post" action="/groups/<%= group.id %>/prizes" id="prize-form">
        <input type="hidden" name="_method" value="PUT">
        <table class="table" id="prizes">
          <tr v-for="(prize, index) in prizes">
            <td class="prize-edit-cell">
              <input type="text" class="form-control" v-model="prize['name']" name="prizes[]">
  
negative.code:         </tr>
          <tr>
            <td class="prize-edit-cell">
              <input type="text" class="form-control" v-model="newItem" @keyup.stop.prevent.enter="add" @keydown.stop.prevent.enter>
            </td>
            <td class="text-right prize-actions-cell">
              <a href="#" class="btn-link btn-info" @click.stop="add">
  