leann/resources/views/search/index.blade.php

<form method="post" action="{{ route('search.results') }}" id="search-form">
    @csrf
    <div class="form-group">
      <span id="radios">
      <input type="radio" id="summarie" value="summarie" name="table" checked>
      <label for="summarie">Beers</label>
      <input type="radio" id="grains" value="grains" name="table" >
      <label for="">Grains</label>
      <input type="radio" id="hops" value="hops" name="table" >
      <label for="">Hops</label>
      <input type="radio" id="yeasts" value="yeast" name="table" >
      <label for="">Yeasts</label></span>
      <input type="text" class="form-control" name="search" />  <button type="submit" class="btn btn-primary"><i class="fa fa-search" aria-hidden="true"></i></button>
    </div>
</form>