Question

我是Python和Flask的新手。我尝试创建一个网站，您可以在其中添加书籍并将其写入MySQL数据库。当我使用PyCharm运行我的项目时它工作正常，直到我导航到我想要添加我的书籍的网站。 错误说：NameError：全局名称＆＃39;表格＆＃39;没有定义。 有人可以帮我解决这个问题吗？也许我把代码写在错误的地方，我不知道。

我的代码是：

views.py：

from flask import render_template, flash, redirect, session, url_for, request
from flask.ext.login import login_user, logout_user, current_user, login_required
from app import app, db, mysql
from .forms import LoginForm, AddForm, RegForm
from .models import User

@app.route('/books/add/admin', methods=['GET', 'POST'])
def books_add_admin():
    add = AddForm()

    if request.method == 'POST':
        cursor = mysql.connect().cursor()
             '''
             cursor = mysql.get_db().cursor()
             author = request.args.get(form.author.data)
             '''
        test = request.args.get(form.title.data)
        author = request.args.get(form.author.data)
        verlag = request.args.get(form.publisher.data)
        isbn = request.args.get(form.isbn.data)
        auflage = request.args.get(form.edition.data)
        exemplare = request.args.get(form.copies.data)
        kurztext = request.args.get(form.short_text.data)
        cursor.execute("INSERT INTO books (Titel, Autor, Verlag, ISBN, Auflage, Info)
        VALUES (titel, author, verlag, isbn, auflage, info);")

             #cursor = mysql.connect().cursor()
        con.commit()
        curser.close()

和forms.py的代码：

from flask.ext.wtf import Form
from wtforms import StringField, IntegerField, BooleanField, PasswordField, validators,
TextAreaField
from wtforms.validators import DataRequired, Length


class LoginForm(Form):
    student_number = IntegerField('student_number', validators=[DataRequired()])
    password = PasswordField('password', validators=[DataRequired()])
    #remember_me = BooleanField('remember_me', default=False)

class AddForm(Form):
    title = StringField('title', validators=[DataRequired()])
    author = StringField('author', validators=[DataRequired()])
    publisher = StringField('publisher', validators=[DataRequired()])
    isbn = IntegerField('isbn', validators=[Length(min=10, max=13)])
    edition = IntegerField('edition', validators=[Length(min=1, max=3)])
    copies = IntegerField('copies', validators=[Length(min=1, max=3)])
    short_info = TextAreaField('short_info', validators=[Length(min=0, max=1040)])

class RegForm(Form):
    student_number = IntegerField('student_number', validators=[Length(min=6, max=7)])
    forname = StringField('forname', validators=[DataRequired()])
    surname = StringField('surname', validators=[DataRequired()])
    email = StringField('email', validators=[DataRequired()])
    password = PasswordField('password', validators=[Length(min=6, max=24)])
    password2 = PasswordField('password2', validators=[Length(min=6, max=24)])

Answer 1

在views.py中，尝试更改：

add = AddForm()

要

form = AddForm()

Answer 2

这似乎是个问题：

add = AddForm()

您将变量命名为add，而您正在尝试在此处引用变量form：

test = request.args.get(form.title.data)
author = request.args.get(form.author.data)
verlag = request.args.get(form.publisher.data)
isbn = request.args.get(form.isbn.data)
auflage = request.args.get(form.edition.data)
exemplare = request.args.get(form.copies.data)

最简单的解决方案是重命名变量：

form = AddForm()

NameError：未定义全局名称'form'。烧瓶的MySQL

2 个答案: