vender.blade.php

<div class="row">
  <div class="col-12 col-md-6">
      <form action="{{route("terminarOCancelarVenta")}}" method="post">
          @csrf
          <div class="form-group">
              <label for="id_cliente">Cliente</label>
              <select required class="form-control" name="id_cliente" id="id_cliente">
                  @foreach($clientes as $cliente)
                      <option value="{{$cliente->id}}">{{$cliente->nombre}}</option>
                  @endforeach
              </select>
          </div>
          @if(session("productos") !== null)
              <div class="form-group">
                  <button name="accion" value="terminar" type="submit" class="btn btn-success">Terminar
                      venta
                  </button>
                  <button name="accion" value="cancelar" type="submit" class="btn btn-danger">Cancelar
                      venta
                  </button>
              </div>
          @endif
      </form>
  </div>
  <div class="col-12 col-md-6">
      <form action="{{route("agregarProductoVenta")}}" method="post">
          @csrf
          <div class="form-group">
              <label for="codigo">Código de barras</label>
              <input id="codigo" autocomplete="off" required autofocus name="codigo" type="text"
                     class="form-control"
                     placeholder="Código de barras">
          </div>
      </form>
  </div>
</div>