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295 líneas
11 KiB
295 líneas
11 KiB
# -*- coding: utf-8 -*-
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"""
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:author: Grey Li (李辉)
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:url: http://greyli.com
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:copyright: © 2018 Grey Li <withlihui@gmail.com>
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:license: MIT, see LICENSE for more details.
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"""
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import os
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from datetime import datetime
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from flask import current_app
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from flask_avatars import Identicon
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from flask_login import UserMixin
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from werkzeug.security import generate_password_hash, check_password_hash
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from albumy.extensions import db, whooshee
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# relationship table
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roles_permissions = db.Table('roles_permissions',
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db.Column('role_id', db.Integer, db.ForeignKey('role.id')),
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db.Column('permission_id', db.Integer, db.ForeignKey('permission.id'))
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)
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class Permission(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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name = db.Column(db.String(30), unique=True)
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roles = db.relationship('Role', secondary=roles_permissions, back_populates='permissions')
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class Role(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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name = db.Column(db.String(30), unique=True)
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users = db.relationship('User', back_populates='role')
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permissions = db.relationship('Permission', secondary=roles_permissions, back_populates='roles')
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@staticmethod
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def init_role():
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roles_permissions_map = {
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'Locked': ['FOLLOW', 'COLLECT'],
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'User': ['FOLLOW', 'COLLECT', 'COMMENT', 'UPLOAD'],
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'Moderator': ['FOLLOW', 'COLLECT', 'COMMENT', 'UPLOAD', 'MODERATE'],
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'Administrator': ['FOLLOW', 'COLLECT', 'COMMENT', 'UPLOAD', 'MODERATE', 'ADMINISTER']
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}
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for role_name in roles_permissions_map:
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role = Role.query.filter_by(name=role_name).first()
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if role is None:
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role = Role(name=role_name)
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db.session.add(role)
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role.permissions = []
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for permission_name in roles_permissions_map[role_name]:
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permission = Permission.query.filter_by(name=permission_name).first()
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if permission is None:
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permission = Permission(name=permission_name)
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db.session.add(permission)
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role.permissions.append(permission)
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db.session.commit()
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# relationship object
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class Follow(db.Model):
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follower_id = db.Column(db.Integer, db.ForeignKey('user.id'),
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primary_key=True)
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followed_id = db.Column(db.Integer, db.ForeignKey('user.id'),
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primary_key=True)
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timestamp = db.Column(db.DateTime, default=datetime.utcnow)
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follower = db.relationship('User', foreign_keys=[follower_id], back_populates='following', lazy='joined')
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followed = db.relationship('User', foreign_keys=[followed_id], back_populates='followers', lazy='joined')
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# relationship object
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class Collect(db.Model):
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collector_id = db.Column(db.Integer, db.ForeignKey('user.id'),
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primary_key=True)
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collected_id = db.Column(db.Integer, db.ForeignKey('photo.id'),
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primary_key=True)
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timestamp = db.Column(db.DateTime, default=datetime.utcnow)
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collector = db.relationship('User', back_populates='collections', lazy='joined')
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collected = db.relationship('Photo', back_populates='collectors', lazy='joined')
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@whooshee.register_model('name', 'username')
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class User(db.Model, UserMixin):
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id = db.Column(db.Integer, primary_key=True)
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username = db.Column(db.String(20), unique=True, index=True)
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email = db.Column(db.String(254), unique=True, index=True)
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password_hash = db.Column(db.String(128))
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name = db.Column(db.String(30))
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website = db.Column(db.String(255))
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bio = db.Column(db.String(120))
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location = db.Column(db.String(50))
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member_since = db.Column(db.DateTime, default=datetime.utcnow)
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avatar_s = db.Column(db.String(64))
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avatar_m = db.Column(db.String(64))
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avatar_l = db.Column(db.String(64))
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avatar_raw = db.Column(db.String(64))
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confirmed = db.Column(db.Boolean, default=False)
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locked = db.Column(db.Boolean, default=False)
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active = db.Column(db.Boolean, default=True)
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public_collections = db.Column(db.Boolean, default=True)
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receive_comment_notification = db.Column(db.Boolean, default=True)
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receive_follow_notification = db.Column(db.Boolean, default=True)
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receive_collect_notification = db.Column(db.Boolean, default=True)
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role_id = db.Column(db.Integer, db.ForeignKey('role.id'))
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role = db.relationship('Role', back_populates='users')
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photos = db.relationship('Photo', back_populates='author', cascade='all')
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comments = db.relationship('Comment', back_populates='author', cascade='all')
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notifications = db.relationship('Notification', back_populates='receiver', cascade='all')
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collections = db.relationship('Collect', back_populates='collector', cascade='all')
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following = db.relationship('Follow', foreign_keys=[Follow.follower_id], back_populates='follower',
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lazy='dynamic', cascade='all')
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followers = db.relationship('Follow', foreign_keys=[Follow.followed_id], back_populates='followed',
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lazy='dynamic', cascade='all')
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def __init__(self, **kwargs):
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super(User, self).__init__(**kwargs)
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self.generate_avatar()
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self.follow(self) # follow self
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self.set_role()
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def set_password(self, password):
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self.password_hash = generate_password_hash(password)
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def set_role(self):
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if self.role is None:
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if self.email == current_app.config['ALBUMY_ADMIN_EMAIL']:
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self.role = Role.query.filter_by(name='Administrator').first()
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else:
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self.role = Role.query.filter_by(name='User').first()
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db.session.commit()
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def validate_password(self, password):
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return check_password_hash(self.password_hash, password)
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def follow(self, user):
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if not self.is_following(user):
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follow = Follow(follower=self, followed=user)
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db.session.add(follow)
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db.session.commit()
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def unfollow(self, user):
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follow = self.following.filter_by(followed_id=user.id).first()
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if follow:
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db.session.delete(follow)
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db.session.commit()
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def is_following(self, user):
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if user.id is None: # when follow self, user.id will be None
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return False
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return self.following.filter_by(followed_id=user.id).first() is not None
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def is_followed_by(self, user):
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return self.followers.filter_by(follower_id=user.id).first() is not None
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@property
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def followed_photos(self):
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return Photo.query.join(Follow, Follow.followed_id == Photo.author_id).filter(Follow.follower_id == self.id)
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def collect(self, photo):
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if not self.is_collecting(photo):
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collect = Collect(collector=self, collected=photo)
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db.session.add(collect)
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db.session.commit()
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def uncollect(self, photo):
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collect = Collect.query.with_parent(self).filter_by(collected_id=photo.id).first()
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if collect:
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db.session.delete(collect)
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db.session.commit()
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def is_collecting(self, photo):
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return Collect.query.with_parent(self).filter_by(collected_id=photo.id).first() is not None
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def lock(self):
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self.locked = True
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self.role = Role.query.filter_by(name='Locked').first()
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db.session.commit()
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def unlock(self):
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self.locked = False
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self.role = Role.query.filter_by(name='User').first()
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db.session.commit()
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def block(self):
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self.active = False
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db.session.commit()
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def unblock(self):
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self.active = True
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db.session.commit()
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def generate_avatar(self):
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avatar = Identicon()
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filenames = avatar.generate(text=self.username)
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self.avatar_s = filenames[0]
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self.avatar_m = filenames[1]
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self.avatar_l = filenames[2]
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db.session.commit()
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@property
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def is_admin(self):
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return self.role.name == 'Administrator'
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@property
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def is_active(self):
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return self.active
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def can(self, permission_name):
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permission = Permission.query.filter_by(name=permission_name).first()
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return permission is not None and self.role is not None and permission in self.role.permissions
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tagging = db.Table('tagging',
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db.Column('photo_id', db.Integer, db.ForeignKey('photo.id')),
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db.Column('tag_id', db.Integer, db.ForeignKey('tag.id'))
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)
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@whooshee.register_model('description')
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class Photo(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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description = db.Column(db.String(500))
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filename = db.Column(db.String(64))
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filename_s = db.Column(db.String(64))
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filename_m = db.Column(db.String(64))
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timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
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can_comment = db.Column(db.Boolean, default=True)
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flag = db.Column(db.Integer, default=0)
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author_id = db.Column(db.Integer, db.ForeignKey('user.id'))
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author = db.relationship('User', back_populates='photos')
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comments = db.relationship('Comment', back_populates='photo', cascade='all')
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collectors = db.relationship('Collect', back_populates='collected', cascade='all')
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tags = db.relationship('Tag', secondary=tagging, back_populates='photos')
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@whooshee.register_model('name')
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class Tag(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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name = db.Column(db.String(64), index=True, unique=True)
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photos = db.relationship('Photo', secondary=tagging, back_populates='tags')
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class Comment(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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body = db.Column(db.Text)
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timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
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flag = db.Column(db.Integer, default=0)
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replied_id = db.Column(db.Integer, db.ForeignKey('comment.id'))
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author_id = db.Column(db.Integer, db.ForeignKey('user.id'))
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photo_id = db.Column(db.Integer, db.ForeignKey('photo.id'))
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photo = db.relationship('Photo', back_populates='comments')
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author = db.relationship('User', back_populates='comments')
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replies = db.relationship('Comment', back_populates='replied', cascade='all')
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replied = db.relationship('Comment', back_populates='replies', remote_side=[id])
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class Notification(db.Model):
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id = db.Column(db.Integer, primary_key=True)
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message = db.Column(db.Text, nullable=False)
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is_read = db.Column(db.Boolean, default=False)
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timestamp = db.Column(db.DateTime, default=datetime.utcnow, index=True)
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receiver_id = db.Column(db.Integer, db.ForeignKey('user.id'))
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receiver = db.relationship('User', back_populates='notifications')
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@db.event.listens_for(User, 'after_delete', named=True)
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def delete_avatars(**kwargs):
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target = kwargs['target']
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for filename in [target.avatar_s, target.avatar_m, target.avatar_l, target.avatar_raw]:
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if filename is not None: # avatar_raw may be None
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path = os.path.join(current_app.config['AVATARS_SAVE_PATH'], filename)
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if os.path.exists(path): # not every filename map a unique file
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os.remove(path)
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@db.event.listens_for(Photo, 'after_delete', named=True)
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def delete_photos(**kwargs):
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target = kwargs['target']
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for filename in [target.filename, target.filename_s, target.filename_m]:
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path = os.path.join(current_app.config['ALBUMY_UPLOAD_PATH'], filename)
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if os.path.exists(path): # not every filename map a unique file
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os.remove(path)
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