timmy / 使用 Streamlit 建立線上訂餐系統

from datetime import date import streamlit as st # 定義 Customer 類別 class Customer: def __init__(self, name, email, preferences): self.name = name self.email = email self.preferences = preferences # 定義 RestaurantMenu 類別 class RestaurantMenu: def __init__(self, name, main_courses, add_ons): self.name = name self.main_courses = main_courses self.add_ons = add_ons def display_menu(self): st.write(f"### {self.name} 菜單") st.write("#### 主餐:") for item, price in self.main_courses.items(): st.write(f"{item}: {price}元") st.write("#### 加點品項:") for item, price in self.add_ons.items(): st.write(f"{item}: {price}元") # 定義幾個餐廳的菜單 menu1 = RestaurantMenu( "餐廳A", { "雞肉便當": 70, "豬肉便當": 75, "魚排便當": 85, }, { "湯": 10, "沙拉": 20, "可樂": 15, }, ) menu2 = RestaurantMenu( "餐廳B", { "炸雞便當": 80, "牛肉便當": 85, "豬排便當": 75, }, { "白飯（半碗）": 5, "白飯（1碗）": 10, "滷蛋": 15, "豆干": 5, "香腸": 45, "高麗菜": 35, }, ) menu3 = RestaurantMenu( "餐廳C", { "素食便當": 70, "烤鴨便當": 95, "咖哩雞便當": 85, }, { "湯": 10, "水果": 20, "汽水": 15, }, ) # 預設的訂購人員 customers = { "Alice": Customer("Alice", "alice@example.com", "無辣"), "Bob": Customer("Bob", "bob@example.com", "少鹽"), "Charlie": Customer("Charlie", "charlie@example.com", "多辣"), } # 餐廳選單 restaurants = { "餐廳A": menu1, "餐廳B": menu2, "餐廳C": menu3, } # 使用 Streamlit 構建應用 def main(): st.title("訂餐系統") st.write("選擇餐廳查看菜單並進行訂購:") # 選擇訂購人員 st.sidebar.title("訂購人資訊") customer_choice = st.sidebar.selectbox("選擇訂購人員", list(customers.keys())) selected_customer = customers[customer_choice] # 自動填入訂購人資訊 customer_name = st.sidebar.text_input( "姓名", value=selected_customer.name, disabled=True ) customer_email = st.sidebar.text_input( "Email", value=selected_customer.email, disabled=True ) customer_preferences = st.sidebar.text_input( "喜好", value=selected_customer.preferences ) order_date = st.sidebar.date_input("餐點日期", date.today()) # 選擇餐廳 restaurant_choice = st.selectbox("選擇餐廳", list(restaurants.keys())) selected_menu = restaurants[restaurant_choice] # 顯示菜單 selected_menu.display_menu() # 選擇主餐和數量 st.write("\n### 選擇主餐和數量:") main_courses_selected = {} for item in selected_menu.main_courses.keys(): quantity = st.number_input( f"{item} 數量", min_value=0, max_value=10, step=1, key=f"main_{item}" ) if quantity > 0: main_courses_selected[item] = quantity # 選擇加點品項和數量 st.write("\n### 選擇加點品項和數量:") add_ons_selected = {} for item in selected_menu.add_ons.keys(): quantity = st.number_input( f"{item} 數量", min_value=0, max_value=10, step=1, key=f"add_{item}" ) if quantity > 0: add_ons_selected[item] = quantity # 計算總價 total_price = 0 for item, quantity in main_courses_selected.items(): total_price += selected_menu.main_courses[item] * quantity for item, quantity in add_ons_selected.items(): total_price += selected_menu.add_ons[item] * quantity # 顯示訂單和總價 if st.button("確認訂單"): st.write("### 訂單詳情:") st.write(f"姓名: {customer_name}") st.write(f"Email: {customer_email}") st.write(f"喜好: {customer_preferences}") st.write(f"餐點日期: {order_date}") st.write("#### 主餐:") for item, quantity in main_courses_selected.items(): st.write( f"{item} - {selected_menu.main_courses[item]}元 x {quantity} = {selected_menu.main_courses[item] * quantity}元" ) st.write("#### 加點品項:") for item, quantity in add_ons_selected.items(): st.write( f"{item} - {selected_menu.add_ons[item]}元 x {quantity} = {selected_menu.add_ons[item] * quantity}元" ) st.write(f"### 總價: {total_price}元") if __name__ == "__main__": main()