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# -*- coding: utf-8 -*- |
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""" |
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flask_jsondash.mongo_adapter |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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Adapters for various storage engines. |
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:copyright: (c) 2016 by Chris Tabor. |
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:license: MIT, see LICENSE for more details. |
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""" |
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from datetime import datetime as dt |
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class Db(object): |
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"""Adapter for all mongo operations.""" |
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def __init__(self, client, conn, coll, formatter): |
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"""Setup connection. |
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Args: |
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client (object): The database client to use. |
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conn (str): The connection URI. |
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coll (str): The collection name. |
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formatter (function): A formatter function to use when formatting |
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chart data. |
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""" |
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self.client = client |
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self.conn = conn |
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self.coll = coll |
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self.formatter = formatter |
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def count(self, **kwargs): |
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"""Standard db count.""" |
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return self.coll.count(**kwargs) |
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def filter(self, *args, **kwargs): |
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"""Separeately allow more nuanced filtering specific to mongo.""" |
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return self.coll.find(*args, **kwargs) |
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def read(self, **kwargs): |
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"""Read a record.""" |
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if kwargs.get('c_id') is None: |
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return self.coll.find(**kwargs) |
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else: |
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return self.coll.find_one(dict(id=kwargs.pop('c_id'))) |
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def update(self, c_id, data=None, fmt_charts=True): |
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"""Update a record. |
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Args: |
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c_id (int): The records id. |
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data (None, optional): data to update the record with. |
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fmt_charts (True, optional): A flag to fmt_charts with the |
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default provided formatter. |
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""" |
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if data is None: |
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return |
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charts = self.formatter(data) if fmt_charts else data.get('modules') |
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save_conf = { |
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'$set': { |
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'layout': data.get('layout', 'freeform'), |
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'name': data.get('name', 'NONAME'), |
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'modules': charts, |
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'date': dt.now() |
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} |
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} |
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save_conf['$set'].update(**data) |
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self.coll.update(dict(id=c_id), save_conf) |
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def create(self, data=None): |
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"""Add a new record. |
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Args: |
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data (dict): The "record" to insert. |
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""" |
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if data is None: |
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return |
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self.coll.insert(data) |
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def delete(self, c_id): |
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"""Delete a record. |
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Args: |
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c_id (int): The records id. |
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""" |
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self.coll.delete_one(dict(id=c_id)) |
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def delete_all(self): |
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"""Delete ALL records. Separated function for safety. |
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This should never be used for production. |
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""" |
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self.coll.remove() |
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christabor /
flask_jsondash
