-
Notifications
You must be signed in to change notification settings - Fork 12
/
models.py
577 lines (502 loc) · 17.7 KB
/
models.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
# coding: utf-8
"""
models.py
数据库模型
"""
from . import db, login_manager, app
from itsdangerous import TimedJSONWebSignatureSerializer as Serializer
from random import seed
from flask import current_app, request, url_for
from flask_login import UserMixin, current_user
from werkzeug.security import generate_password_hash, check_password_hash
from flask_login import AnonymousUserMixin
from datetime import datetime
import sys
import bleach
from markdown import markdown
import hashlib
import base64
import pickle
# secondary table
# 多对多关系
UBLike = db.Table(
# 用户和博客的关联表
"user_blog_likes",
db.Column('user_id', db.Integer, db.ForeignKey('users.id')),
db.Column('blog_id', db.Integer, db.ForeignKey('blogs.id'))
)
BTMap = db.Table(
# 博客与标签的关联表
"blog_tag_maps",
db.Column('blog_id', db.Integer, db.ForeignKey('blogs.id',ondelete='cascade')),
db.Column('tag_id', db.Integer, db.ForeignKey('tags.id',ondelete='cascade'))
)
class Permission:
"""
用户权限定义(base 16)
"""
COMMENT = 0x02 # 评论权限
WRITE_ARTICLES = 0x04 # 写文章权限
MODERATE_COMMENTS = 0x08 # 修改评论权限
ADMINISTER = 0x80 # 管理员权限,修改所有
class Role(db.Model):
"""
用户角色定义
"""
__tablename__ = 'roles'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(64), unique=True)
default = db.Column(db.Boolean, default=False, index=True)
permissions = db.Column(db.Integer)
users = db.relationship('User', backref='role', lazy='dynamic')
@staticmethod
def insert_roles():
"""
插入角色
1.User: 可以评论、写文章 true(默认)
2.Moderator: 可以评论写文章,删除评论
3.Administer: 管理员(想干什么干什么)
需调用此方法,创建角色
"""
roles = {
# | 表示按位或操作,base 16进行运算
'User': (Permission.COMMENT |
Permission.WRITE_ARTICLES, True),
'Moderator': (Permission.COMMENT |
Permission.WRITE_ARTICLES |
Permission.MODERATE_COMMENTS, False),
'Administrator': (0xff, False)
}
for r in roles:
role = Role.query.filter_by(name=r).first()
if role is None:
role = Role(name=r)
role.permissions = roles[r][0]
role.default = roles[r][1]
db.session.add(role) # 添加进数据库
db.session.commit() # 提交
def __repr__(self):
"""该类的'官方'表示方法"""
return '<Role %r>' % self.name
class Book(db.Model):
"""图书类"""
__searchable__ = ['name', 'tag', 'summary', 'bid']
__tablename__ = "books"
id = db.Column(db.Integer, primary_key = True)
url = db.Column(db.String(164))
bid = db.Column(db.Text)
name = db.Column(db.Text)
author = db.Column(db.Text)
tag = db.Column(db.String(164))
summary = db.Column(db.Text)
image = db.Column(db.String(164))
user_id = db.Column(db.Integer, db.ForeignKey('users.id'))
status = db.Column(db.Boolean)
start = db.Column(db.String(164))
end = db.Column(db.String(164))
def __repr__(self):
return "%r :The instance of class Book" % self.name
class User(db.Model, UserMixin):
"""用户类"""
__tablename__ = "users"
id = db.Column(db.Integer, primary_key = True) # user id (auto generate)
email = db.Column(db.String(164)) # email address
birthday = db.Column(db.String(164)) # user's birthday
hometown = db.Column(db.String(164)) # hometown address and coordinates
group = db.Column(db.String(164)) # group info (be, fe, design, android, product)
timejoin = db.Column(db.String(164)) # time of joining muxi
timeleft = db.Column(db.String(164)) # time of leaving muxi
username = db.Column(db.String(164), unique=True)
password_hash = db.Column(db.String(164))
left = db.Column(db.Boolean)
info = db.Column(db.Text) # talk about yourself
# url of your avatar (suggestion: upload to qiniu or imugur)
# tool: Drag (https://github.com/bHps2016/Drag)
avatar_url = db.Column(db.Text)
# blog and social networks' urls
personal_blog = db.Column(db.Text)
github = db.Column(db.Text)
flickr = db.Column(db.Text)
weibo = db.Column(db.Text)
zhihu = db.Column(db.Text)
book = db.relationship('Book', backref="user", lazy="dynamic")
share = db.relationship('Share', backref="user", lazy="dynamic")
comments = db.relationship('Comment', backref='author', lazy='dynamic')
role_id = db.Column(db.Integer, db.ForeignKey('roles.id'))
# 用户发布的博客
blogs = db.relationship('Blog', backref='author', lazy='dynamic')
def __init__(self, **kwargs):
"""用户角色实现"""
super(User, self).__init__(**kwargs)
if self.role is None:
self.role = Role.query.filter_by(default=True).first()
def can(self, permissions):
"""判断用户的权限"""
return self.role is not None and (self.role.permissions & permissions) == permissions
def is_admin(self):
"""判断当前用户是否是管理员"""
return self.role_id == 2
@property
def password(self):
"""将密码方法设为User类的属性"""
raise AttributeError('密码原始值保密, 无法保存!')
@password.setter
def password(self, password):
"""设置密码散列值"""
password = base64.b64decode(password)
self.password_hash = generate_password_hash(password)
def verify_password(self, password):
"""验证密码散列值"""
return check_password_hash(self.password_hash, password)
def generate_auth_token(self):
"""generate a token"""
s = Serializer(current_app.config['SECRET_KEY'],expires_in = 604800 )
# token 七天过期
return s.dumps({'id': self.id})
@staticmethod
def verify_auth_token(token):
"""verify the user with token"""
s = Serializer(current_app.config['SECRET_KEY'])
try:
data = s.loads(token)
except:
return None
# get id
return User.query.get_or_404(data['id'])
def to_json(self):
json_user = {
'id' : self.id,
'username' : self.username,
'email' : self.email
# 'share' : null # => 待share api编写完成
}
@staticmethod
def from_json(json_user):
u = User(
username = json_user.get('username'),
password = json_user.get('password'),
email = json_user.get('email')
)
return u
def __repr__(self):
return "%r :The instance of class User" % self.username
class AnonymousUser(AnonymousUserMixin):
"""
匿名用户类
谁叫你匿名,什么权限都没有
"""
def can(self, permissions):
return False
def is_admin(self):
return False
login_manager.anonymous_user = AnonymousUser
@login_manager.user_loader
def load_user(user_id):
"""flask-login要求实现的用户加载回调函数
依据用户的unicode字符串的id加载用户"""
return User.query.get(int(user_id))
class Share(db.Model):
"""分享类"""
__tablename__ = "shares"
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.Text)
share = db.Column(db.Text)
tag = db.Column(db.Text)
content = db.Column(db.Text) # 存取markdown渲染以后的内容
read_num = db.Column(db.Integer)
timestamp = db.Column(db.DateTime, index=True, default=datetime.now)
author_id = db.Column(db.Integer, db.ForeignKey('users.id'))
comment = db.relationship('Comment', backref='shares', lazy='dynamic')
comment_num = db.Column(db.Integer,default=0)
@staticmethod
def generate_fake(count=10):
# 生成虚拟数据
from random import seed, randint
import forgery_py
seed()
user_count = User.query.count()
for i in range(count):
u = User.query.offset(randint(0, user_count - 1)).first()
p = Share(
title=forgery_py.lorem_ipsum.title(randint(1, 5)),
share=forgery_py.lorem_ipsum.sentences(randint(1, 5)),
timestamp=forgery_py.date.date(True),
author_id=u.id
)
db.session.add(p)
db.session.commit()
def to_json(self):
author = User.query.filter_by(id=self.author_id).first()
if not author:
username = ""
else:
username = author.username
if self.tag :
tag = self.tag
else :
tag = ""
try :
share = pickle.loads(self.share)
except :
share = self.share
print "share can not load in api"
try :
title = pickle.loads(self.title)
except :
title = self.title
print "titie can not load in api"
#comment_num = len(Comment.query.filter_by(share_id=self.id).all())
json_share = {
'id' : self.id,
'tag' : tag ,
'title' : title,
'share' : share,
'date' : self.timestamp,
'read_num' : self.read_num,
'username' : username,
'comment_num' : self.comment_num ,
'comment' : url_for('shares.view_share2', id=self.id),
'avatar' : author.avatar_url ,
'user_id' : author.id ,
}
return json_share
def to_json3(self):
author = User.query.filter_by(id=self.author_id).first()
if not author:
username = ""
else:
username = author.username
try :
share = pickle.loads(self.share)
except :
share = self.share
print "share can not load in api"
try :
title = pickle.loads(self.title)
except :
title = self.title
print "title can not load in api"
if self.tag :
tag = self.tag
else :
tag = ""
# comment_num = len(Comment.query.filter_by(share_id=self.id).all())
json_share = {
'id' : self.id,
'title' : title ,
'share' : share,
'date' : self.timestamp,
'tag' : tag ,
'comment_num' : self.comment_num ,
'read_num' : self.read_num,
'username' : username,
'comment' : url_for('shares.view_share2', id=self.id),
'avatar' : author.avatar_url ,
}
return json_share
def to_json2(self):
try :
share = pickle.loads(self.share)
except :
share = self.share
print "share can not load in api"
try :
title = pickle.loads(self.title)
except :
title = self.title
print "title can not load in api"
json_share = {
'id' : self.id,
'title' : title ,
'share' : share ,
'date' : self.timestamp,
}
return json_share
@staticmethod
def from_json(json_share):
share = Share(
title = json_share.get('title'),
share = json_share.get('share'),
author_id = current_user.id
)
return share
def __repr__(self):
return "%r is instance of class Share" % self.title
class Comment(db.Model):
"""评论类"""
__tablename__ = 'comments'
id = db.Column(db.Integer, primary_key=True)
comment = db.Column(db.Text)
count = db.Column(db.Integer)
timestamp = db.Column(db.DateTime, index=True, default=datetime.now)
share_id = db.Column(db.Integer, db.ForeignKey('shares.id'))
author_id = db.Column(db.Integer, db.ForeignKey('users.id'))
blog_id = db.Column(db.Integer, db.ForeignKey('blogs.id'))
author_name = db.Column(db.String(30))
def to_json(self):
try :
comment = pickle.loads(self.comment)
except :
comment = self.comment
print "comment can not load in api"
json_comment = {
'date' : self.timestamp,
'comment' : comment,
'username' : User.query.filter_by(id=self.author_id).first().username ,
'avatar' : User.query.filter_by(id=self.author_id).first().avatar_url ,
}
return json_comment
def __repr__(self):
return "<the instance of model Comment>"
class Blog(db.Model):
"""博客类"""
__tablename__ = 'blogs'
id = db.Column(db.Integer, primary_key = True)
name = db.Column(db.String(164))
# body 直接存markdown,在服务器端渲染
title = db.Column(db.Text)
body = db.Column(db.Text)
summary = db.Column(db.Text)
img_url = db.Column(db.String(164))
timestamp = db.Column(db.DateTime, index=True, default=datetime.now)
author_id = db.Column(db.Integer, db.ForeignKey('users.id'))
# 文章分类: 一篇文章对应一个分类
type_id = db.Column(db.Integer)
comments = db.relationship('Comment', backref='blog', lazy='dynamic')
likes_number = db.Column(db.Integer, default=0)
comment_number = db.Column(db.Integer, default=0)
# 喜欢这篇博客的用户列表
# this is a relationship so we call User
liked_users = db.relationship(
"User",
secondary=UBLike,
backref=db.backref("liked_blogs", lazy="dynamic"),
lazy="dynamic",
)
# 博客对应的标签
tags = db.relationship(
"Tag",
secondary=BTMap,
backref=db.backref("blogs", lazy='dynamic',cascade='all'),
passive_deletes = True ,
single_parent = True ,
cascade="all, delete-orphan" ,
lazy="dynamic"
)
@property
def index(self):
"""
以年月的形式对文章进行归档
ex: 15年12月
:return:
"""
return str(self.timestamp)[:4]+"年"+\
str(self.timestamp)[5:7]+"月"
@property
def liked(self):
"""
属性函数, 判断当前用户是否点赞这门课
:return:
"""
if current_user in self.liked_users:
return True
else:
return False
@staticmethod
def generate_fake(count=100):
# 生成虚拟数据
from random import randint
import forgery_py
seed()
user_count = User.query.count()
for i in range(count):
u = User.query.offset(randint(0, user_count - 1)).first()
b = Blog(
body = forgery_py.lorem_ipsum.sentences(randint(1, 5)),
timestamp =forgery_py.date.date(True),
author = u
)
db.session.add(b)
db.session.commit()
def to_json(self):
author = User.query.filter_by(id=self.author_id).first()
comment_num = len(Comment.query.filter_by(blog_id=self.id).all())
if not author:
username = ""
else:
username = author.username
#这里是有很多种类型的错误,不捕获了,反正也只是反序列化
try :
body = pickle.loads(self.body)
except :
body = self.body
print "blog can not load in api"
try :
title = pickle.loads(self.title)
except :
title = self.title
print "blog 's title can not load in api"
try :
summary = pickle.loads(self.summary)
except :
summary = self.summary
if len(summary) == 0 :
summary = body[:100]
json_blog = {
'id' : self.id,
'title' : title,
'body' : body,
'date' : self.timestamp,
'username' : username,
'comment' : url_for('blogs.view_comment2', id=self.id),
'comment_num' : comment_num ,
'avatar' : author.avatar_url ,
'summary' : summary ,
'type' : self.type_id ,
'img_url' : self.img_url ,
'tags' : [ item.value for item in self.tags ],
'tag_num' : len(list(self.tags)) ,
'likes' : self.likes_number,
'likes_users' : [ item.username for item in self.liked_users ] ,
}
return json_blog
def to_json2(self) :
date = "%d/%02d/%02d" % (self.timestamp.year, self.timestamp.month, self.timestamp.day) ,
json_blog = {
"date" : date ,
"blog" : url_for('blogs.view2', id=self.id) ,
}
return json_blog
def find_month(self,year,month) :
if int(self.timestamp.year) == int(year) and int(self.timestamp.month) == int(month) :
return True
return False
@staticmethod
def on_changed_body(target, value, oldvalue, initiator):
allowed_tags = ['a', 'abbr', 'acronym', 'b', 'blockquote', 'code',
'em', 'i', 'li', 'ol', 'pre', 'strong', 'ul',
'h1', 'h2', 'h3', 'p']
target.body_html = bleach.linkify(bleach.clean(
markdown(value, output_format='html'),
tags=allowed_tags, strip=True))
db.event.listen(Blog.body, 'set', Blog.on_changed_body)
class Type(db.Model):
"""
博客文章的分类
ex: 前端,后台,安卓,设计...
"""
__tablename__ = 'types'
id = db.Column(db.Integer, primary_key=True)
value = db.Column(db.String(64))
def __repr__(self):
return "<type %d>" % self.id
class Tag(db.Model):
"""
博客文章的标签
ex: js, css, flask...
"""
__tablename__ = 'tags'
id = db.Column(db.Integer, primary_key=True)
value = db.Column(db.String(64))
def __repr__(self):
return "<type %d>" % self.id