Question

对Flask来说是新手，但是认为构建我的小项目看起来很酷。结果我正在努力寻找可能基本的东西。

我有以下型号：

# Define the User data model. Make sure to add the flask_user.UserMixin !!
class User(db.Model, UserMixin):
    id = db.Column(db.Integer, primary_key=True)

# User email information (required for Flask-User)
    email = db.Column(db.String(255), nullable=False, unique=True)
    confirmed_at = db.Column(db.DateTime())

# User information
    active = db.Column('is_active', db.Boolean(), nullable=False, server_default='0')
    first_name = db.Column(db.String(50), nullable=False, server_default='')
    last_name = db.Column(db.String(50), nullable=False, server_default='')
    clinic_name = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_one = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_city = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_state = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_zip = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_phone = db.Column(db.String(50), nullable=False, server_default='')

# Relationships
    user_auth = db.relationship('UserAuth', uselist=False)
    roles = db.relationship('Role', secondary='user_roles',
        backref=db.backref('users', lazy='dynamic'))

    memorials = db.relationship('Memorial', backref='author', lazy='dynamic')


# Define the UserAuth data model.
class UserAuth(db.Model, UserMixin):
    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer(), db.ForeignKey('user.id', ondelete='CASCADE'))

# User authentication information (required for Flask-User)
    username = db.Column(db.String(50), nullable=False, unique=True)
    password = db.Column(db.String(255), nullable=False, server_default='')
    reset_password_token = db.Column(db.String(100), nullable=False, server_default='')
    active = db.Column(db.Boolean(), nullable=False, server_default='0')

# Relationships
    user = db.relationship('User', uselist=False)


# Define the Role data model
class Role(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    name = db.Column(db.String(50), unique=True)
    description = db.Column(db.String(255))


# Define the UserRoles association model
class UserRoles(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    user_id = db.Column(db.Integer(), db.ForeignKey('user.id', ondelete='CASCADE'))
    role_id = db.Column(db.Integer(), db.ForeignKey('role.id', ondelete='CASCADE'))

# Define the Memorial model
class Memorial(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer(), db.ForeignKey('user.id'))
    owner_name = db.Column(db.String(255), nullable=False, server_default='')
    owner_address_one = db.Column(db.String(255), nullable=False, server_default='')
    owner_address_two = db.Column(db.String(255), nullable=False, server_default='')
    owner_city = db.Column(db.String(255), nullable=False, server_default='')
    owner_state = db.Column(db.String(255), nullable=False, server_default='')
    owner_zipcode = db.Column(db.String(255), nullable=False, server_default='')
    pet_name = db.Column(db.String(255), nullable=False, server_default='')
    pet_gender = db.Column(db.String(255), nullable=False, server_default='')
    pet_species = db.Column(db.String(255), nullable=False, server_default='')

我有一个表格可以输入你的纪念品，它有这个信息：

@app.route('/member', methods=['GET','POST'])
@login_required             # Limits access to authenticated users
def member_page():
    # Intitialize form
    form = MemorialsForm(request.form)

    # Process valid POST
    if request.method=='POST' and form.validate():
        mems = Memorial()

        form.populate_obj(mems)

        db.session.add(mems)

        # Save the submission
        db.session.commit()

        # Redirect to list page
        return redirect(url_for('memorial_list'))

    # Process GET or invalid POST
    return render_template('flask_user/memorial.html', form=form)

对于我的列表页面，我想显示特定用户输入的所有纪念馆。我无法通过这项工作来挽救我的生命。

我试过了：

all_mems = Memorial.query.filter_by(author=current_user).all()
return render_template('pages/list.html', all_mems=all_mems)

这让我没有结果。如果我尝试做类似的事情：

all_mems = Memorial.query.filter_by(author=current_user.id).all()

它抱怨说：

AttributeError: 'int' object has no attribute '_sa_instance_state'

如果我转储数据库，除了Memorial.user_id永远不会获得赋值的事实之外，我看不到有用的东西。根据模型设置，我认为哪种自动化？

任何想法/帮助表示赞赏。如果我没有提供足够的信息，请告诉我。

++++ +++ EDIT 我现在有：

class User(db.Model, UserMixin):
    id = db.Column(db.Integer, primary_key=True)

    # User email information (required for Flask-User)
    email = db.Column(db.String(255), nullable=False, unique=True)
    confirmed_at = db.Column(db.DateTime())

    # User information
    active = db.Column('is_active', db.Boolean(), nullable=False, server_default='0')
    first_name = db.Column(db.String(50), nullable=False, server_default='')
    last_name = db.Column(db.String(50), nullable=False, server_default='')
    clinic_name = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_one = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_city = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_state = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_zip = db.Column(db.String(50), nullable=False, server_default='')
    clinic_add_phone = db.Column(db.String(50), nullable=False, server_default='')

    # Relationships
    memorials = db.relationship('Memorial', backref='users', lazy='dynamic') #added lazy code, changed backref to user from clinic
    user_auth = db.relationship('UserAuth', uselist=False)
    roles = db.relationship('Role', secondary='user_roles',
            backref=db.backref('users', lazy='dynamic'))

和

class Memorial(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    owner_name = db.Column(db.String(255), nullable=False, server_default='')
    owner_address_one = db.Column(db.String(255), nullable=False, server_default='')
    owner_address_two = db.Column(db.String(255), nullable=False, server_default='')
    owner_city = db.Column(db.String(255), nullable=False, server_default='')
    owner_state = db.Column(db.String(255), nullable=False, server_default='')
    owner_zipcode = db.Column(db.String(255), nullable=False, server_default='')
    pet_name = db.Column(db.String(255), nullable=False, server_default='')
    pet_gender = db.Column(db.String(255), nullable=False, server_default='')
    pet_species = db.Column(db.String(255), nullable=False, server_default='')
    status = db.Column(db.String(255), nullable=False, server_default='')
    remit_date = db.Column(db.DateTime)
    processed_date = db.Column(db.DateTime)

我现在可以保存，删除和查看纪念品，附加了用户ID（因为我现在正在保存user_id ...认为它是自动的，但事实并非如此）。我仍然不知道如何让我的Join很重要 - 我可以很容易地查询任何一个表，但我无法弄清楚如何获取连接数据。例如，假设我想要转储纪念品，并添加输入它的用户的clinic_name。

all_mems = Memorials.query.all（）仅返回所有纪念馆和user_ids。返回所有纪念馆和诊所名称的正确构造是什么？

谢谢你们 - 我真的很开心。

使用Flask-SQLAlchemy，Flask-User ::我无法获得正确的查询输出

0 个答案: