我正在用Flask开发一个简单的问卷调查REST API。该应用程序由前端和后端两部分组成。
前端功能：
显示调查表列表（用户可以选择他/她将通过的调查表）
进行问答（向用户显示问题和可能的答案）
后端功能：
从JSON文件加载问卷结构
用于用户应用程序的REST API（调查问卷列表）
当对话结束（回答了最后一个问题）时，后端应将对话历史记录到控制台中。日志应包含第一个问题和所有后续用户答案。示例：Are you hungry?: Yes -> Pizza -> Yes
限制
服务器不应通过一个响应返回整个对话框树。系统应该是交互式的（应仅加载下一个问题和答案变体）
与一个问题相关的答案数量限制为5
我是设计REST API的新手，我的问题是如何有效地设计API以完成给定的任务。这就是我后端代码的样子，我无法弄清楚如何使其能够满足挑战的要求。
'''
Dialog example:
Are you hungry? (Yes/No)
Yes:
What would you like to eat? (Hamburger/Pizza/Pop Corn/Chicken)
Hamburger:
Nice, I will order a hamburger for you!
Pizza:
Would you like pizza with mushrooms? (Yes/No)
Yes:
Ok, I will order the best pizza in town for you
No:
No? Well... stay hungry then
No:
Ok. Call me when you're hungry.
'''
from flask import Flask, jsonify
question_list = {
"Start":
{
"question": "Are you Hungry?",
"options": ["Yes", "No"]
},
"Yes":
{
"question": "What would you like to eat?",
"options": ["Hamburger", "Pizza", "Pop Corn", "Chicken"]
},
"No":
{
"question": "Ok, call me when you are hungry.",
"options": [] # empty array means end of questions
},
"Pizza":
{
"Start":
{
"question": "Would you like pizza with mushroom?",
"options": ["Yes", "No"]
},
"Yes":
{
"question": "OK, I will order the best pizza in town for you.",
"options": [] # empty array means end of questions
},
"No":
{
"question": "No? Well... stay hungry then.",
"options": [] # empty array means end of questions
}
}
}
app = Flask(__name__)
@app.route('/')
def StartQuestionnaire():
return jsonify(question_list["Start"])
# last selected option will be passed as keyword argument
@app.route('/<string:option>')
def GetQuestion(option):
return jsonify(question_list[option])
if __name__ == '__main__':
app.run(debug=True)
答案 0 :(得分：0)
好的，所以我自己弄清楚了。并与希望解决此问题的任何人分享答案。 我现在正在从json文件中读取问卷调查数据。我现在有两条路线
data.json
{
"questionnaire_0" :
[
{
"question": "Are you Hungry?",
"options": ["Yes", "No"]
},
{
"Yes": {
"question": "What would you like to eat?",
"options": ["Hamburger", "Pizza", "Pop Corn", "Chicken"]
},
"No": {
"message": "OK, call me when you are hungry."
}
},
{
"Hamburger": {
"message": "Nice, I will order a hamburger for you."
},
"Pizza": {
"question": "Would you like pizza with mushroom?",
"options": ["Yes", "No"]
},
"Pop Corn": {
"question": "Would you like pop corn with cheese?",
"options": ["Yes", "No"]
},
"Chicken": {
"question": "Would you like chicken with cheese?",
"options": ["Yes", "No"]
}
},
{
"Pizza": {
"Yes": {
"message": "Ok, i will order the best pizza in town for you."
},
"No": {
"message": "No? Well... stay hungry then."
}
},
"Pop Corn": {
"Yes": {
"message": "Ok, i will order the best pop corn in town for you."
},
"No": {
"message": "No? Well... stay hungry then."
}
},
"Chicken": {
"Yes": {
"message": "Ok, i will order the best chicken in town for you."
},
"No": {
"message": "No? Well... stay hungry then."
}
}
}
],
"questionnaire_1":
[
{
"question": "Are you bored?",
"options": ["Yes", "No"]
},
{
"Yes": {
"question": "What would you like me to play?",
"options": ["Song", "Movie", "Music", "Ted Talk"]
},
"No": {
"message": "OK, call me when you are bored."
}
},
{
"Song": {
"message": "Nice, I will play your favorite song."
},
"Movie": {
"question": "Would you like to watch action movie?",
"options": ["Yes", "No"]
},
"Music": {
"question": "Would you like relaxing music?",
"options": ["Yes", "No"]
},
"Ted Talk": {
"question": "Would you like me to play simon sinek talk?",
"options": ["Yes", "No"]
}
},
{
"Movie": {
"Yes": {
"message": "Ok, i am playing Avengers."
},
"No": {
"message": "No? Well... stay bored then."
}
},
"Music": {
"Yes": {
"message": "Ok, i will play the most relaxing music."
},
"No": {
"message": "No? Well... stay bored then."
}
},
"Ted Talk": {
"Yes": {
"message": "Ok, get ready to feel inspired."
},
"No": {
"message": "No? Well... stay bored then."
}
}
}
]
}
app.py
from flask import Flask, jsonify
import json
import sys
# global variables
num = 0
last_choice = 'empty'
questionnaire_key = ''
user_choice = []
data = {}
app = Flask(__name__)
with open('static/data.json') as f:
data = json.load(f)
print(data, file=sys.stdout)
@app.route('/<int:index>/Start')
def StartQuestionnaire(index):
global num, last_choice, questionnaire_key, user_choice
num = 0
last_choice = 'empty'
user_choice.clear()
questionnaire_key = 'questionnaire_' + str(index)
user_choice.append(data[questionnaire_key][0]['question'])
print(user_choice, file=sys.stdout)
return jsonify(data[questionnaire_key][0])
# last selected option will be passed as keyword argument
@app.route('/<int:index>/<string:option>')
def GetQuestion(index, option):
global num, last_choice, questionnaire_key
num = num + 1
response = {}
user_choice.append(option)
if last_choice != 'empty':
response = data[questionnaire_key][num][last_choice][option]
else:
if option != 'Yes' and option != 'No':
last_choice = option
response = data[questionnaire_key][num][option]
if option == 'No' or num == len(data[questionnaire_key]) - 1:
for elem in user_choice:
print(elem, file=sys.stdout)
return jsonify(response)
if __name__ == '__main__':
app.run(debug=False, use_reloader=False)