问题描述
这是用Python
编写的Web应用程序,用于添加和删除任务。
这是 add_tasks 函数:
@app.route("/add",methods=["GET","POST"])
@login_required
def add():
if request.method == "POST":
add = request.form.get("add")
quantity = request.form.get("quantity")
if not add:
return apology("Please add an item")
db.execute("INSERT INTO history (add,quantity,user_id) VALUES (:add,:quantity,:user_id);",add=add,quantity=quantity,user_id=session["user_id"])
return redirect("/")
else:
return render_template("add.html")
然后,我的删除函数仅将存储的项目从sql
数据库移至SELECT
,以便删除它们。
@app.route("/delete","POST"])
@login_required
def delete():
if request.method == "POST":
db.execute("DELETE FROM history (add,quantity=0,user_id=session["user_id"])
else:
rows = db.execute("SELECT add FROM history WHERE user_id=:user_id GROUP BY add",user_id=session["user_id"])
return render_template("delete.html",add=[row["add"] for row in rows])
解决方法
最后,我的POST
函数的DELETE
部分是错误的。我设法找到了解决方案:
db.execute("DELETE FROM history WHERE user_id=:user_id and add=:add;",user_id=session["user_id"],add=add)
感谢RobinFrcd的帮助!