models_annotation.py

# coding: utf-8
"""
class StationmetaAnnotation (Base)
==================================
"""
from sqlalchemy import Column, DateTime, Float, ForeignKey, Integer, String, \
                       Text, Boolean, CheckConstraint, Table, Sequence, text
from sqlalchemy.orm import relationship
from toardb.auth_user.models import AuthUser
from toardb.base import Base


# many-to-many relationships
stationmeta_core_stationmeta_annotations_table = Table('stationmeta_core_stationmeta_annotations', Base.metadata,
    Column('station_id', Integer, ForeignKey('stationmeta_core.id')),
    Column('annotation_id', Integer, ForeignKey('stationmeta_annotations.id'))
)


STATIONMETA_ANNOTATIONS_ID_SEQ = Sequence('stationmeta_annotations_id_seq')  # define sequence explicitly
class StationmetaAnnotation(Base):
    """ Table "public.stationmeta_annotations"

    +----------------+--------------------------+-----------+----------+--------------------------------------------------------+
    |     Column     |           Type           | Collation | Nullable |                      Default                           |
    +================+==========================+===========+==========+========================================================+
    | id             | integer                  |           | not null | nextval('stationmeta_annotations_id_seq'::regclass)    |
    +----------------+--------------------------+-----------+----------+--------------------------------------------------------+
    | kind           | integer                  |           | not null | 0                                                      |
    +----------------+--------------------------+-----------+----------+--------------------------------------------------------+
    | text           | text                     |           | not null |                                                        |
    +----------------+--------------------------+-----------+----------+--------------------------------------------------------+
    | date_added     | timestamp with time zone |           | not null |                                                        |
    +----------------+--------------------------+-----------+----------+--------------------------------------------------------+
    | approved       | boolean                  |           | not null |                                                        |
    +----------------+--------------------------+-----------+----------+--------------------------------------------------------+
    | contributor_id | integer                  |           | not null |                                                        |
    +----------------+--------------------------+-----------+----------+--------------------------------------------------------+
    Indexes:
     "stationmeta_annotations_pkey" PRIMARY KEY, btree (id)
     "stationmeta_annotations_contributor_id_a5009820" btree (contributor_id)
    Check constraints:
     "stationmeta_annotations_kind_check" CHECK (kind >= 0)
    Foreign-key constraints:
     "stationmeta_annotations_contributor_id_a5009820_fk_auth_user_id" FOREIGN KEY (contributor_id) REFERENCES auth_user(id) DEFERRABLE INITIALLY DEFERRED
     "stationmeta_annotations_kind_fk_ak_vocabulary_enum_val" FOREIGN KEY (kind) REFERENCES ak_vocabulary(enum_val)
    """
    __tablename__ = 'stationmeta_annotations'
    __table_args__ = (
        CheckConstraint('kind >= 0'),
    )

    id = Column(Integer, STATIONMETA_ANNOTATIONS_ID_SEQ, primary_key=True, server_default=STATIONMETA_ANNOTATIONS_ID_SEQ.next_value())
    kind = Column(ForeignKey('ak_vocabulary.enum_val'), nullable=False, server_default=text("0'::integer"))
    text = Column(Text, nullable=False)
    date_added = Column(DateTime(True), nullable=False)
    approved = Column(Boolean, nullable=False)
# do not use string declaration here (not working for pytest)
# use the explicit class name here,
# see: https://groups.google.com/forum/#!topic/sqlalchemy/YjGhE4d6K4U
    contributor_id = Column(ForeignKey(AuthUser.id, deferrable=True, initially='DEFERRED'), nullable=False, index=True)
# how to reactivate the following two lines?!
#   contributor = relationship('AuthUser')

    station = relationship("StationmetaCore",
        secondary=stationmeta_core_stationmeta_annotations_table,
        backref="annotations")