Session & Flash

Session

Mocha natively uses Flask session, with the addition of having the ability to use as backend either: Redis, Memcache, S3, CloudStorage

Config

#: SESSION
#: Flask-KVSession is used to save the user's session
#: Set the SESSION_URL by using these examples below to set KVSession
#: To use local session, just set SESSION_URL to None
#:
#: Redis: redis://username:password@host:6379/db
#: S3: s3://username:password@s3.aws.amazon.com/bucket
#: Google Storage: google_storage://username:password@cloud.google.com/bucket
#: SQL: postgresql://username:password@host:3306/db
#:      mysql+pysql://username:password@host:3306/db
#:      sqlite://
#: Memcached: memcache://host:port
#:
SESSION_URL = None

Usage

from mocha import session

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Flash

The Flash provides single-use string storage. It useful for implementing the Post/Redirect/Get pattern, or for transient "Operation Successful!" or "Operation Failed!" messages

You can import the flash as is, but for convenience, we provided some special message pattern:

flash_info, flash_success, flash_error to indicate a info, success and error message respectively.

Flash Message

Import

from mocha import flash_info, flash_success, flash_error

Usage

class Index(Mocha):

    def index(self):
        flash_info("You need to provide your account info")
        return

    def post(self):
        try:
            # do something
            flash_success('Account info saved successfully!')
        except Exception as ex:
            flash_error('An error occured while saving your info')

        return redirect(self.index)

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Flash Data

Same as flash message, you can also flash data

Import

from mocha import flash_data, get_flash_data

Usage

class Index(Mocha):

    def index(self):
        flash_data({"temp": 70})


    def get(self, id):
        temp = get_flash_data().get("temp")