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55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
from sqlalchemy import Column, Integer, String, Unicode
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from sqlalchemy.orm import deferred
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from project import db
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from project.dateutils import gmt_tz
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from project.models.iowned import IOwned
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from project.models.trackable_mixin import TrackableMixin
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class Image(db.Model, TrackableMixin, IOwned):
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__tablename__ = "image"
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id = Column(Integer(), primary_key=True)
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data = deferred(db.Column(db.LargeBinary))
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encoding_format = Column(String(80))
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copyright_text = Column(Unicode(255))
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adminunit = db.relationship("AdminUnit", uselist=False)
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event = db.relationship("Event", uselist=False)
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eventorganizer = db.relationship("EventOrganizer", uselist=False)
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eventplace = db.relationship("EventPlace", uselist=False)
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eventsuggestion = db.relationship("EventSuggestion", uselist=False)
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def is_empty(self):
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return not self.data
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def get_hash(self):
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return (
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int(self.updated_at.replace(tzinfo=gmt_tz).timestamp() * 1000)
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if self.updated_at
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else 0
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)
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def get_file_extension(self):
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return self.encoding_format.split("/")[-1] if self.encoding_format else "png"
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def before_flush(self, session, is_dirty):
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if self.is_empty():
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if self.adminunit:
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self.adminunit.logo = None
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if self.event:
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self.event.photo = None
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if self.eventorganizer:
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self.eventorganizer.logo = None
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if self.eventplace:
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self.eventplace.photo = None
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if self.eventsuggestion:
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self.eventsuggestion.photo = None
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if is_dirty:
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session.delete(self)
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