Source code for pacifica.metadata.orm.citation_keyword

# -*- coding: utf-8 -*-
"""Keywords linked to citations."""
from peewee import ForeignKeyField, CompositeKey
from .utils import index_hash
from .citations import Citations
from .keywords import Keywords
from .base import DB
from import CherryPyAPI

[docs]class CitationKeyword(CherryPyAPI): """ CitationKeywords Model. Attributes: +-------------------+-------------------------------------+ | Name | Description | +===================+=====================================+ | citation | Link to the Citation model | +-------------------+-------------------------------------+ | keyword | Link to the Keyword model | +-------------------+-------------------------------------+ """ citation = ForeignKeyField(Citations, backref='keywords') keyword = ForeignKeyField(Keywords, backref='citations') # pylint: disable=too-few-public-methods class Meta(object): """PeeWee meta class contains the database and the primary key.""" database = DB primary_key = CompositeKey('citation', 'keyword') # pylint: enable=too-few-public-methods
[docs] def to_hash(self, **flags): """Convert the object to a hash.""" obj = super(CitationKeyword, self).to_hash(**flags) # pylint: disable=no-member obj['_id'] = index_hash( int(self.__data__['citation']), int(self.__data__['keyword']) ) obj['citation'] = int(self.__data__['citation']) obj['keyword'] = int(self.__data__['keyword']) # pylint: enable=no-member return obj
[docs] def from_hash(self, obj): """Convert the hash into the object.""" super(CitationKeyword, self).from_hash(obj) self._set_only_if( 'citation', obj, 'citation', lambda: Citations.get( == obj['citation']) ) self._set_only_if( 'keyword', obj, 'keyword', lambda: Keywords.get( == obj['keyword']) )
[docs] @classmethod def where_clause(cls, kwargs): """Where clause for the various elements.""" where_clause = super(CitationKeyword, cls).where_clause(kwargs) attrs = ['citation', 'keyword'] return cls._where_attr_clause(where_clause, kwargs, attrs)