質問編集履歴
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特にログイン後の「edit.html」から「index.html」にリダイレクトするときや、「index.html」で再読み込みをするときに頻発しております。
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```stokupile.py
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#!/usr/bin/env python
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# coding: utf-8
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import sqlite3
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from flask import Flask, render_template, request, redirect, url_for, session, flash
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# from flask.ext.session import Session は廃止されている
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from flask_session import Session
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import os
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app = Flask(__name__)
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app.secret_key = os.urandom(24)
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SESSION_TYPE = 'filesystem'
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app.config.from_object(__name__)
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sess = Session()
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sqlite_path = 'db/stockpile.db'
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users_db_path = 'db/users.db'
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def get_db_connection():
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connection = sqlite3.connect(sqlite_path)
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connection.row_factory = sqlite3.Row
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return connection
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def get_user_db_connection():
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connection = sqlite3.connect(users_db_path)
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connection.row_factory = sqlite3.Row
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return connection
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@app.before_request
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def before_request():
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# # 静的ファイルへのアクセスについては、チェック対象としない
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# if request.path.startswith('/static/'):
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# return
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# セッションにusernameが保存されている．つまりログイン済み
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if session.get("username") == "admin":
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return
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# リクエストパスがログインページに関する場合
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if request.path == '/login':
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return
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# ログインされておらず，インデックスに関するリクエストの場合
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if request.path == '/':
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return
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# ログインされておらず，ログインページに関するリクエストでない場合
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return render_template('index.html')
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@app.route("/")
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def index():
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if session.get("username") == "admin":
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connection = get_db_connection()
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cursor = connection.cursor()
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res = cursor.execute('SELECT * FROM stockpile')
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return render_template('index.html', stock_list=res.fetchall(),
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username=session["username"], password=session["password"])
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else:
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connection = get_db_connection()
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cursor = connection.cursor()
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res = cursor.execute('SELECT * FROM stockpile')
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return render_template('index.html', stock_list=res.fetchall())
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# 個人認証を行い，正規のアカウントか確認する
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def _is_account_valid():
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username = request.form.get('username')
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password = request.form.get("password")
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# この例では，ユーザ名にadminが指定されていれば正規のアカウントであるとみなしている
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# ここで具体的な個人認証処理を行う．認証に成功であればTrueを返すようにする
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if username == 'admin' and password == 'admin':
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session["username"] = username
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return True
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return False
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@app.route("/login", methods=["GET", "POST"])
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def login():
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if request.method == 'POST':
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error = []
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username = request.form.get("username", None)
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password = request.form.get("password", None)
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if username == "":
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error.append("名前を入力して下さい")
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if password == "":
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error.append("パスワードを入力して下さい")
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if error:
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stockpile = request.form.to_dict()
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return render_template("login.html", error_list=error)
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if _is_account_valid():
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session["username"] = username
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session["password"] = password
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flash('ログインしました', 'info')
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return redirect(url_for('index'))
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error.append("組み合わせが正しくありません")
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return render_template("login.html", error_list=error)
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elif request.method == 'GET':
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return render_template("login.html")
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else:
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return render_template("index.html")
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@app.route("/logout")
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def logout():
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session.pop("username", None)
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return render_template("index.html")
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@app.route("/add", methods=["GET", "POST"])
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def add_stock():
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if request.method == "GET":
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"""移動先のテンプレートがformの中で辞書（stockpile）を使ってるから、
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からのリストを定義しておかないとエラー発生
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"""
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stockpile = {}
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return render_template("edit.html", type="add", stockpile=stockpile)
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elif _is_account_valid():
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connection = get_db_connection()
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cursor = connection.cursor()
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error = []
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if not request.form["name"]:
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error.append("商品名を入力して下さい")
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if not request.form["stocknumber"]:
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error.append("個数を入力して下さい")
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if not request.form["duedate"]:
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error.append("賞味期限を入力して下さい")
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if error:
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#name属性をkey,入力をvalueにした辞書を作成？
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stockpile = request.form.to_dict()
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return render_template("edit.html", type="add", stockpile=stockpile, error_list=error)
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cursor.execute("INSERT INTO stockpile(name, stocknumber, duedate, memo) VALUES(?, ?, ?, ?)",
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(request.form["name"],
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request.form["stocknumber"],
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request.form["duedate"],
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request.form["memo"]))
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connection.commit()
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return redirect(url_for('index'))
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@app.route("/delete/<int:id>")
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def delete(id):
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connection = get_db_connection()
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cursor = connection.cursor()
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cursor.execute("DELETE FROM stockpile WHERE id = ? ", (id,))
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connection.commit()
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return render_template("index.html")
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@app.route("/edit/<int:id>")
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def edit(id):
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connection = get_db_connection()
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cursor = connection.cursor()
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res = cursor.execute("SELECT * FROM stockpile WHERE id = ? ", (id,))
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return render_template("edit.html", type="edit", stockpile=res.fetchone())
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@app.route("/update/<int:id>", methods=["POST"])
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def update_stock(id):
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error = []
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if not request.form["name"]:
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error.append("商品名を入力して下さい")
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if not request.form["stocknumber"]:
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error.append("個数を入力して下さい")
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if not request.form["duedate"]:
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error.append("期限を入力して下さい")
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if error:
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stockpile = request.form.to_dict()
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return render_template("edit.html", type="edit", stockpile=stockpile, error_list=error)
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connection = get_db_connection()
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cursor = connection.cursor()
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cursor.execute("UPDATE stockpile set name = ? , stocknumber = ? , duedate = ? , memo = ? where id = ?",
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(request.form["name"],
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request.form["stocknumber"],
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request.form["duedate"],
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request.form["memo"],
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id))
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connection.commit()
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return redirect(url_for("index"))
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if __name__ == '__main__':
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# app.debug = True # デバッグモード有効化
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407
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# どこからでもアクセス可能に
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409
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app.run(host='0.0.0.0', port=8080, threaded=True)
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```
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|
15
413
|
|
|
16
414
|
|
|
415
|
+
```index.html
|
|
416
|
+
|
|
417
|
+
{% extends "layout.html" %}
|
|
418
|
+
|
|
419
|
+
{% block body %}
|
|
420
|
+
|
|
421
|
+
<body>
|
|
422
|
+
|
|
423
|
+
{% for message in get_flashed_messages() %}
|
|
424
|
+
|
|
425
|
+
<div class="alert alert-warning">
|
|
426
|
+
|
|
427
|
+
{{ message }}
|
|
428
|
+
|
|
429
|
+
</div>
|
|
430
|
+
|
|
431
|
+
{% endfor %}
|
|
432
|
+
|
|
433
|
+
<h1>在庫管理 アプリケーション</h1>
|
|
434
|
+
|
|
435
|
+
{% if session.username == "admin" %}
|
|
436
|
+
|
|
437
|
+
<table>
|
|
438
|
+
|
|
439
|
+
<tr>
|
|
440
|
+
|
|
441
|
+
<th>商品名</th>
|
|
442
|
+
|
|
443
|
+
<th>個数</th>
|
|
444
|
+
|
|
445
|
+
<th>賞味期限</th>
|
|
446
|
+
|
|
447
|
+
<th>メモ</th>
|
|
448
|
+
|
|
449
|
+
<th></th>
|
|
450
|
+
|
|
451
|
+
</tr>
|
|
452
|
+
|
|
453
|
+
{% for v in stock_list %}
|
|
454
|
+
|
|
455
|
+
<tr>
|
|
456
|
+
|
|
457
|
+
<td><a href="{{ url_for('edit', id=v['id'])}}">{{ v['name']}}</a></td>
|
|
458
|
+
|
|
459
|
+
<td>{{ v['stocknumber']}}</td>
|
|
460
|
+
|
|
461
|
+
<td>{{ v['duedate']}}</td>
|
|
462
|
+
|
|
463
|
+
<td>{{ v['memo']}}</td>
|
|
464
|
+
|
|
465
|
+
<td><a href={{ url_for("delete", id=v["id"]) }}>削除</a></td>
|
|
466
|
+
|
|
467
|
+
</tr>
|
|
468
|
+
|
|
469
|
+
{% endfor %}
|
|
470
|
+
|
|
471
|
+
</table>
|
|
472
|
+
|
|
473
|
+
<h3><a href="{{ url_for('add_stock')}}">在庫の追加</a></h3>
|
|
474
|
+
|
|
475
|
+
<h3><a href="{{ url_for('logout')}}">ログアウト</a></h3>
|
|
476
|
+
|
|
477
|
+
{% else %}
|
|
478
|
+
|
|
479
|
+
<h3><a href="{{ url_for('login')}}">ログイン</a></h3>
|
|
480
|
+
|
|
481
|
+
{% endif %}
|
|
482
|
+
|
|
483
|
+
</body>
|
|
484
|
+
|
|
485
|
+
{% endblock %}
|
|
486
|
+
|
|
17
487
|
```
|
|
488
|
+
|
|
489
|
+
|
|
490
|
+
|
|
491
|
+
```edit.html
|
|
492
|
+
|
|
493
|
+
{% extends "layout.html" %}
|
|
494
|
+
|
|
495
|
+
{% block body %}
|
|
496
|
+
|
|
497
|
+
<body>
|
|
498
|
+
|
|
499
|
+
|
|
500
|
+
|
|
501
|
+
<h1>在庫を編集する</h1>
|
|
502
|
+
|
|
503
|
+
|
|
504
|
+
|
|
505
|
+
<form method="post" action="{% if type == "add" %}{{ url_for('add_stock') }}{% else %}{{ url_for('update_stock', id=stockpile["id"]) }}{% endif %}">
|
|
506
|
+
|
|
507
|
+
{% if error_list %}
|
|
508
|
+
|
|
509
|
+
<ul>
|
|
510
|
+
|
|
511
|
+
{% for v in error_list %}
|
|
512
|
+
|
|
513
|
+
<li>{{ v }}</li>
|
|
514
|
+
|
|
515
|
+
{% endfor %}
|
|
516
|
+
|
|
517
|
+
</ul>
|
|
518
|
+
|
|
519
|
+
{% endif %}
|
|
520
|
+
|
|
521
|
+
<p>商品名<br/><input type="text" name="name" value="{{ stockpile['name'] }}"/></p>
|
|
522
|
+
|
|
523
|
+
<p>在庫数<br/><input type="int" name="stocknumber" value="{{ stockpile['stocknumber'] }}"/></p>
|
|
524
|
+
|
|
525
|
+
<p>期限<br/><input type="text" name="duedate" value="{{ stockpile['duedate'] }}"/></p>
|
|
526
|
+
|
|
527
|
+
<p>メモ<br/><input type="text" name="memo" value="{{ stockpile['memo'] }}" size="60"/></p>
|
|
528
|
+
|
|
529
|
+
{% if type == "add" %}
|
|
530
|
+
|
|
531
|
+
<button type="submit">在庫を追加</button>
|
|
532
|
+
|
|
533
|
+
{% else %}
|
|
534
|
+
|
|
535
|
+
<button type="submit">在庫を更新</button>
|
|
536
|
+
|
|
537
|
+
{% endif %}
|
|
538
|
+
|
|
539
|
+
</form>
|
|
540
|
+
|
|
541
|
+
<br/>
|
|
542
|
+
|
|
543
|
+
<a href="{{ url_for('index')}}">トップに戻る</a>
|
|
544
|
+
|
|
545
|
+
</body>
|
|
546
|
+
|
|
547
|
+
{% endblock %}
|
|
548
|
+
|
|
549
|
+
```
|
|
550
|
+
|
|
551
|
+
|
|
552
|
+
|
|
553
|
+
調べてみた限りではredisを利用してsessionをデータベースに保存するのがいいようなことはわかったのですが、Railsでのやり方や、英語のドキュメントしか見当たらず、理解することができませんでした。
|
|
554
|
+
|
|
555
|
+
|
|
556
|
+
|
|
557
|
+
ご教示いただけると幸いです。
|