flask-sqlalchemy

问题 I'll acknowledge that this is a strange question before I ask it. I'm wondering if it's possible to replicate Flask / SQL Alchemy class methods using raw SQL instead of using the methods themselves? Long story short, my teammates and I are taking a database design course, and we're now in the implementation phase where we are coding the app that is based on our DB schema design. We want to keep things simple, so we opted for using Flask in Python. We're following the Flask Mega Tutorial,

问题 can I store PDF files in the database, as object or blob, with Flask-Admin? I do not find any reference in the documentation. Thanks. Cheers 回答1: Below is a self contained an example of storing files directly in a blob field via Flask-Admin. There is minimal error checking but it should get you going in the right direction. The important parts of the code: class BlobMixin(object): mimetype = db.Column(db.Unicode(length=255), nullable=False) filename = db.Column(db.Unicode(length=255),

问题 can I store PDF files in the database, as object or blob, with Flask-Admin? I do not find any reference in the documentation. Thanks. Cheers 回答1: Below is a self contained an example of storing files directly in a blob field via Flask-Admin. There is minimal error checking but it should get you going in the right direction. The important parts of the code: class BlobMixin(object): mimetype = db.Column(db.Unicode(length=255), nullable=False) filename = db.Column(db.Unicode(length=255),

问题 We use a central class model for a wide variety of python modules. This model is defined using SQLAlchemy. The classes all inherit from declarative_base. For example, our model definitions look something like this: Base = declarative_base() class Post(Base): __tablename__ = 'Posts' id = Column(INT, primary_key=True, autoincrement=True) body = Column(TEXT) timestamp = Column(TIMESTAMP) user_id = Column(INT, ForeignKey('Users.uid')) We have been building a flask web-application in which we

问题 We use a central class model for a wide variety of python modules. This model is defined using SQLAlchemy. The classes all inherit from declarative_base. For example, our model definitions look something like this: Base = declarative_base() class Post(Base): __tablename__ = 'Posts' id = Column(INT, primary_key=True, autoincrement=True) body = Column(TEXT) timestamp = Column(TIMESTAMP) user_id = Column(INT, ForeignKey('Users.uid')) We have been building a flask web-application in which we

问题 We use a central class model for a wide variety of python modules. This model is defined using SQLAlchemy. The classes all inherit from declarative_base. For example, our model definitions look something like this: Base = declarative_base() class Post(Base): __tablename__ = 'Posts' id = Column(INT, primary_key=True, autoincrement=True) body = Column(TEXT) timestamp = Column(TIMESTAMP) user_id = Column(INT, ForeignKey('Users.uid')) We have been building a flask web-application in which we

问题 In my Flask-SQLAlchemy web application I have implemented Flask-Login for user authentication and authorization. Now I am building an Admin section where the admin user can add, edit or delete any user and view user list. So before deleting any user I want to know whether that user is currently logged in to the application from somewhere or simply having any active session with the web application. How can I accomplice this? Or Is this even possible in the application level? [ Note: As you

问题 I am trying to add some roles/users with flask_security but run into this issue when I try to create users with the SQLAlchemySessionUserDatastore . So I first start by creating user_datastore like the guide db = SQLAlchemy(app) user_datastore = SQLAlchemySessionUserDatastore(db, User, Role) security = Security(app, user_datastore) user_datastore.create_user(email='test', password='passowrd') this is where I deviate from the guide and try to just create a test user. Looks like the db =

问题 I am trying to add some roles/users with flask_security but run into this issue when I try to create users with the SQLAlchemySessionUserDatastore . So I first start by creating user_datastore like the guide db = SQLAlchemy(app) user_datastore = SQLAlchemySessionUserDatastore(db, User, Role) security = Security(app, user_datastore) user_datastore.create_user(email='test', password='passowrd') this is where I deviate from the guide and try to just create a test user. Looks like the db =

问题 I am trying to add some roles/users with flask_security but run into this issue when I try to create users with the SQLAlchemySessionUserDatastore . So I first start by creating user_datastore like the guide db = SQLAlchemy(app) user_datastore = SQLAlchemySessionUserDatastore(db, User, Role) security = Security(app, user_datastore) user_datastore.create_user(email='test', password='passowrd') this is where I deviate from the guide and try to just create a test user. Looks like the db =