Adding food items.

AddingFoodItem.js

 addFoodItem(event){
    event.preventDefault()
    if (!this.state.food) return;
    const foodItem = {
      id: this.state.foodItems.length + 1,
      food: this.state.food,
      cost: this.state.cost,
      userId: this.state.userId,
      statu: this.state.status
    };
  
    this.setState({
      food: '',
      cost: '',
      foodItem: foodItem,
      foodItems: [...this.state.foodItems, foodItem]
    })
  }