在同一个烧瓶视图中处理GET和POST

Question

当我键入请求时。表单[“name”]，例如，要从POST提交的表单中检索名称，我还必须编写一个类似于请求的单独分支。类型获取[“名称”]？如果我想支持这两种方法，我需要为所有POST和GET请求编写单独的语句吗？

@app.route("/register", methods=["GET", "POST"])
def register():
    """Register user."""

我的问题与使用python和Flask获取请求变量的值密切相关。

Answer 1

您可以通过调用validate_on_submit（）来处理“POST”方法，以检查表单是否使用有效数据提交，否则默认情况下，您的函数将响应GET请求。您的功能如下所示：

@app.route("/register", methods=["GET", "POST"])
def register():
    """Register user."""
    form = SomeForm() 
    # treat POST request 
    if form.validate_on_submit():
       # do something ... 
       # return redirect ... 


    # else response to GET request
    # return render_template... 

Answer 2

下面是一个例子，在这个例子中，您可以很容易地找到使用POST、GET方法的方法，并使用同样的方法添加其他curd操作。

#libraries to include

import os
from flask import request, jsonify
from app import app, mongo
import logger
ROOT_PATH = os.environ.get('ROOT_PATH')
@app.route('/get/questions/', methods=['GET', 'POST','DELETE', 'PATCH'])
def question():
# request.args is to get urls arguments 


    if request.method == 'GET':
        start = request.args.get('start', default=0, type=int)
        limit_url = request.args.get('limit', default=20, type=int)
        questions = mongo.db.questions.find().limit(limit_url).skip(start);
        data = [doc for doc in questions]
        return jsonify(isError= False,
                    message= "Success",
                    statusCode= 200,
                    data= data), 200

    # request.form to get form parameter

    if request.method == 'POST':
        average_time = request.form.get('average_time')
        choices = request.form.get('choices')
        created_by = request.form.get('created_by')
        difficulty_level = request.form.get('difficulty_level')
        question = request.form.get('question')
        topics = request.form.get('topics')

        ##Do something like insert in DB or Render somewhere etc. it's up to you....... :)

Answer 3

您可以使用请求来区分实际的方法。方法。

我假设您想：

• 使用GETmethod
• 如果使用POST

因此，您的案例与docs:Flask Quickstart-HTTP方法中描述的案例类似

import flask
app = flask.Flask('your_flask_env')

@app.route('/register', methods=['GET', 'POST'])
def register():
    if flask.request.method == 'POST':
        username = flask.request.values.get('user') # Your form's
        password = flask.request.values.get('pass') # input names
        your_register_routine(username, password)
    else:
        # You probably don't have args at this route with GET
        # method, but if you do, you can access them like so:
        yourarg = flask.request.args.get('argname')
        your_register_template_rendering(yourarg)