myems-api/core/menu.py
import falcon
import mysql.connector
import simplejson as json
from core.useractivity import user_logger, admin_control, access_control, api_key_control
import config
class MenuCollection:
def __init__(self):
""""Initializes MenuCollection"""
pass
@staticmethod
def on_options(req, resp):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, route, parent_menu_id, is_hidden "
" FROM tbl_menus "
" ORDER BY id ")
cursor.execute(query)
rows_menus = cursor.fetchall()
result = list()
if rows_menus is not None and len(rows_menus) > 0:
for row in rows_menus:
temp = {"id": row[0],
"name": row[1],
"route": row[2],
"parent_menu_id": row[3],
"is_hidden": bool(row[4])}
result.append(temp)
cursor.close()
cnx.close()
resp.text = json.dumps(result)
class MenuItem:
def __init__(self):
""""Initializes MenuItem"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_MENU_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, route, parent_menu_id, is_hidden "
" FROM tbl_menus "
" WHERE id= %s ")
cursor.execute(query, (id_,))
rows_menu = cursor.fetchone()
result = None
if rows_menu is not None and len(rows_menu) > 0:
result = {"id": rows_menu[0],
"name": rows_menu[1],
"route": rows_menu[2],
"parent_menu_id": rows_menu[3],
"is_hidden": bool(rows_menu[4])}
cursor.close()
cnx.close()
resp.text = json.dumps(result)
@staticmethod
@user_logger
def on_put(req, resp, id_):
"""Handles PUT requests"""
admin_control(req)
try:
raw_json = req.stream.read().decode('utf-8')
except Exception as ex:
raise falcon.HTTPError(status=falcon.HTTP_400,
title='API.BAD_REQUEST',
description='API.FAILED_TO_READ_REQUEST_STREAM')
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_MENU_ID')
new_values = json.loads(raw_json)
if 'is_hidden' not in new_values['data'].keys() or \
not isinstance(new_values['data']['is_hidden'], bool):
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_IS_HIDDEN')
is_hidden = new_values['data']['is_hidden']
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
update_row = (" UPDATE tbl_menus "
" SET is_hidden = %s "
" WHERE id = %s ")
cursor.execute(update_row, (is_hidden,
id_))
cnx.commit()
cursor.close()
cnx.close()
resp.status = falcon.HTTP_200
class MenuChildrenCollection:
def __init__(self):
""""Initializes MenuChildrenCollection"""
pass
@staticmethod
def on_options(req, resp, id_):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp, id_):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
if not id_.isdigit() or int(id_) <= 0:
raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
description='API.INVALID_MENU_ID')
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, name, route, parent_menu_id, is_hidden "
" FROM tbl_menus "
" WHERE id = %s ")
cursor.execute(query, (id_,))
row_current_menu = cursor.fetchone()
if row_current_menu is None:
cursor.close()
cnx.close()
raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
description='API.MENU_NOT_FOUND')
query = (" SELECT id, name "
" FROM tbl_menus "
" ORDER BY id ")
cursor.execute(query)
rows_menus = cursor.fetchall()
menu_dict = dict()
if rows_menus is not None and len(rows_menus) > 0:
for row in rows_menus:
menu_dict[row[0]] = {"id": row[0],
"name": row[1]}
result = dict()
result['current'] = dict()
result['current']['id'] = row_current_menu[0]
result['current']['name'] = row_current_menu[1]
result['current']['parent_menu'] = menu_dict.get(row_current_menu[3], None)
result['current']['is_hidden'] = bool(row_current_menu[4])
result['children'] = list()
query = (" SELECT id, name, route, parent_menu_id, is_hidden "
" FROM tbl_menus "
" WHERE parent_menu_id = %s "
" ORDER BY id ")
cursor.execute(query, (id_, ))
rows_menus = cursor.fetchall()
if rows_menus is not None and len(rows_menus) > 0:
for row in rows_menus:
meta_result = {"id": row[0],
"name": row[1],
"parent_menu": menu_dict.get(row[3], None),
"is_hidden": bool(row[4])}
result['children'].append(meta_result)
cursor.close()
cnx.close()
resp.text = json.dumps(result)
class MenuWebCollection:
def __init__(self):
""""Initializes MenuWebCollection"""
pass
@staticmethod
def on_options(req, resp):
resp.status = falcon.HTTP_200
@staticmethod
def on_get(req, resp):
if 'API-KEY' not in req.headers or \
not isinstance(req.headers['API-KEY'], str) or \
len(str.strip(req.headers['API-KEY'])) == 0:
access_control(req)
else:
api_key_control(req)
cnx = mysql.connector.connect(**config.myems_system_db)
cursor = cnx.cursor()
query = (" SELECT id, route, parent_menu_id "
" FROM tbl_menus "
" WHERE parent_menu_id IS NULL AND is_hidden = 0 ")
cursor.execute(query)
rows_menus = cursor.fetchall()
first_level_routes = {}
if rows_menus is not None and len(rows_menus) > 0:
for row in rows_menus:
first_level_routes[row[0]] = {
'route': row[1],
'children': []
}
query = (" SELECT id, route, parent_menu_id "
" FROM tbl_menus "
" WHERE parent_menu_id IS NOT NULL AND is_hidden = 0 ")
cursor.execute(query)
rows_menus = cursor.fetchall()
if rows_menus is not None and len(rows_menus) > 0:
for row in rows_menus:
if row[2] in first_level_routes.keys():
first_level_routes[row[2]]['children'].append(row[1])
result = dict()
for _id, item in first_level_routes.items():
result[item['route']] = item['children']
cursor.close()
cnx.close()
resp.text = json.dumps(result)