常用api总结
from flask import Flask, request
import time
import pymysql
import pprint
pp = pprint.PrettyPrinter(indent=4)
class MySQL(object):
__cursor = None
@staticmethod
def cursor():
if not MySQL.__cursor:
print('welcome')
conn = pymysql.connect(host='localhost', user='root', password='123456', database='chaoge', charset='utf8')
MySQL.__cursor = conn.cursor()
return MySQL.__cursor
@staticmethod
def query(q):
cursor = MySQL.cursor()
print(q)
try:
cursor.execute(q)
except pymysql.err.InternalError as err:
pp.pprint(q)
raise err
else:
fields = [col[0] for col in cursor.description]
return [dict(zip(fields, row)) for row in cursor.fetchall()]
class Node(object):
def load_by_data(self, row_data):
for key in self.columns:
self.__dict__[key] = row_data[self.columns[key]]
return self
def load_by_id(self, id=None):
if not id:
if not self.key in self.__dict__:
return None
id = self.id
q = "SELECT * FROM `%s` WHERE `%s`='%s' LIMIT 1" % (self.table, self.columns[self.key], id)
result = MySQL.query(q)
return self.load_by_data(result[0]) if result else None
def find_by_restrictions(self):
condition = "1=1"
for key in self.columns:
if not key in self.__dict__:
continue
condition = "%s AND `%s`='%s'" % (condition, self.columns[key], self.__dict__[key])
q = "SELECT * FROM `%s` WHERE %s LIMIT 100" % (self.table, condition)
result = MySQL.query(q)
return [self.__class__().load_by_data(row_data) for row_data in result]
class Tree(Node):
@property
def parent(self):
return self.__class__().load_by_id(self.__dict__[self.pkey])
@property
def parents(self):
par = self.parent
if not par:
return [self]
return par.parents + [self]
@property
def children(self):
obj = self.__class__()
obj.__dict__[self.pkey] = self.id
return obj.find_by_restrictions()
class Category(Tree):
def __init__(self):
self.table = 'babel_node'
self.key = 'id'
self.pkey = 'pid'
self.columns = {
'id': 'node_id',
'pid': 'nod_pid',
'name': 'nod_title'
}
def __str__(self):
return "<a href='/list/?id=%s'>%s</a>" % (self.id, self.name)
@property
def shops(self):
obj = Shop()
obj.category_id = self.id
return obj.find_by_restrictions()
class Area(Tree):
def __init__(self):
self.table = 'babel_area'
self.key = 'id'
self.pkey = 'pid'
self.columns = {
'id': 'area_id',
'pid': 'area_pid',
'name': 'area_title'
}
def __str__(self):
return "<a href='/area/?id=%s'>%s</a>" % (self.id, self.name)
@property
def shops(self):
obj = Shop()
obj.area_id = self.id
return obj.find_by_restrictions()
class Shop(Node):
def __init__(self):
self.table = 'babel_topic'
self.key = 'id'
self.columns = {
'id': 'tpc_id',
'area_id': 'tpc_area',
'category_id': 'tpc_pid',
'name': 'tpc_pname',
'description': 'tpc_description'
}
def __str__(self):
return "<a href='/shop/?id=%s'>%s</a>" % (self.id, self.name)
@property
def category(self):
return Category().load_by_id(self.category_id)
@property
def area(self):
return Area().load_by_id(self.area_id)
@property
def comments(self):
obj = Comment()
obj.comments_id = self.id
return obj.find_by_restrictions()
class Comment(Node):
def __init__(self):
self.table = 'babel_reply'
self.key = 'id'
self.columns = {
'id': 'rpl_id',
'content': 'rpl_content',
'user_id': 'rpl_usr_id',
'comments_id': 'rpl_tpc_id'
}
@property
def user(self):
return User().load_by_id(self.user_id)
def __str__(self):
user = self.user
return "<a href='/user/?id=%s'>%s</a> %s" % (user.id, user.name, self.content)
class User(Node):
def __init__(self):
self.table = 'babel_user'
self.key = 'id'
self.columns = {
'id': 'usr_id',
'email': 'usr_email',
'name': 'usr_nick'
}
app = Flask(__name__)
@app.route('/')
def home():
root_category = Category()
root_category.id = 21
html = "<h1>分类列表</h1>"
for category in root_category.children:
html += "<hr> %s" % category
for subcategory in category.children:
html += "<li>%s</li> " % subcategory
return html
def html_add_catalogue(Obj, html):
if not Obj:
html += ""
return html
for obj in Obj.parents:
html += "%s |>>" % obj
for obj in Obj.children:
html += "%s |<<" % obj
return html
def html_add_items(root, html):
for value in root:
html += "<li>%s</li>" % value
return html
@app.route('/list/')
def listing():
category = Category().load_by_id(request.args.get('id'))
html = "<h1>分类:%s <a href='/'>back home</a></h1>" % category.name
html = html_add_catalogue(category, html)
html = html_add_items(category.shops, html)
return html
@app.route('/area/')
def area():
area = Area().load_by_id(request.args.get('id'))
html = "<h1>地区:%s <a href='/'>back home</a></h1>" % area.name
html = html_add_catalogue(area, html)
html = html_add_items(area.shops, html)
return html
@app.route('/shop/')
def shop():
shop = Shop().load_by_id(request.args.get('id'))
html = "<h1>主题:%s <a href='/'>back home</a></h1>" % shop.name
html = html_add_catalogue(shop.category, html)
html += "<hr>"
html = html_add_catalogue(shop.area, html)
html += "<hr>"
if shop.description:
html += shop.description
html += "<hr>"
html = html_add_items(shop.comments, html)
return html
@app.route('/user/')
def user():
user = User().load_by_id(request.args.get('id'))
html = "<h1>姓名:%s <a href='/'>back home</a></h1>" % user.name
if user.email:
html += user.email
return html
if __name__ == '__main__':
app.run(debug=True, port=1224)
