1.2 app工厂以及db问题的解决

app工厂用于模式的选择可以写在配置类文件中，最后配置类文件所有代码如下

from redis import StrictRedis
import logging
class Config(object):
配置类
    DEBUG = True
    SQLALCHEMY_DATABASE_URI = "mysql://root:hushuai@127.0.0.1:3306/demo"
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    REDIS_HOST = "127.0.0.1"
    REDIS_PORT = 6379
    SECRET_KEY = "ISADqionsdoiAsid"
    SESSION_TYPE = "redis"
    SESSION_REDIS = StrictRedis(host=REDIS_HOST, port=REDIS_PORT)
    SESSION_USE_SIGNER = True
    SESSION_PERMANENT = 60*60*24

#开发工厂
class DevelopmentConfig(Config):
    LEVEL_LOG = logging.DEBUG

#生产工厂
class ProductionConfig(Config):
    DEBUG = False
    SQLALCHEMY_DATABASE_URI = "mysql://root:hushuai@127.0.0.1:3306/demo"
    LEVEL_LOG = logging.ERROR
class TestConfig(Config):
    pass
#测试工厂
configs = {
    "dev":DevelopmentConfig,
    "pro":ProductionConfig,
    "tes":TestConfig,
}

接下来是db问题的解决，先看代码

db = SQLAlchemy()
redis_store = None
redis_store = StrictRedis(host=Config.REDIS_HOST, port=Config.REDIS_PORT,decode_responses=True)
def create_app(env):
    setup_log(configs[env].LEVEL_LOG)
#设置日志等级
    app = Flask(__name__)
    app.config.from_object(configs[env])

    db.init_app(app)
    global redis_store
    redis_store = StrictRedis(host=Config.REDIS_HOST, port=Config.REDIS_PORT, decode_responses=True)

    # CSRFProtect(app)
    Session(app)

    from info.modules.index import index_blue
    app.register_blueprint(index_blue)
    from info.modules.passport import passport_blue
    app.register_blueprint(passport_blue)

    from info.modules.news import news_index
    app.register_blueprint(news_index)
    from info.utlis.tools import do_rank
    app.add_template_filter(do_rank,"rank")
    return app

我们这里是已经解决好db问题的代码，就是用db.init_app(app)来解决的