[Flask]Session사용하기 : RuntimeError: The session is unavailable because no secret key was set. Set the secret_key on the application to something unique and secret.

Flask에서 Session을 사용하려면

from flask import session

app = Flask(__name__)
app.secret_key = os.urandom(24)
app.config['SESSION_TYPE'] = 'filesystem'

secret key를 추가해줘야한다. 

secret key에 'secret key' 같은 값을 넣어도 상관없지만, 유니크하게 가져가려고 나는 urandom으로 가져왔다. 

 

session['세션키'] = '세션밸류'

사용변수 = session['세션키']

세션에 담을 값을 보내주는 곳과 받아주는 곳에 모두 저렇게 적어주면 끝 ! 

 

 

예시

#로그인 정보 Cloud SQL로 넘기기
@app.route("/saveSQL", methods=['POST'])
def saveSQL():
    db_connection = dbconnect()
    output = request.get_json()
    result = json.loads(output) 
    userinfo = result['info']
    uid = userinfo[0]
    userinfo[3] = userinfo[3][6:16]
    cl = ['UID', 'NAME', 'EMAIL', 'JOINDATE']
    pdinfo = pd.DataFrame([result['info']], columns=cl)
    
    session['uid'] = uid
    return redirect(url_for('trans'))


@app.route("/cloud")
def trans(result_list=result_list, targettxt=targettxt):
    uid = session['uid']
    sourcetxt = str(request.args.get("sourcetxt"))
    if sourcetxt is not None:
        translate_info = cloudapi.translate_text("en",sourcetxt)
        targettxt = translate_info["translatedText"]
        savedata = save_realtime(sourcetxt, targettxt)
        result_list = ""
        for i in savedata[-1].values():
            result_list = i
        targettxt = result_list.get('target')
    return render_template("translator.html", result=result_list, targettxt=targettxt)