50 lines
1.4 KiB
Python
50 lines
1.4 KiB
Python
from peewee import *
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from playhouse.sqlite_ext import SqliteExtDatabase
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import datetime
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import json
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import numpy as np
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def coloursToJson(colours):
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colours2 = [(list(colour[0]), colour[1]) for colour in colours]
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return json.dumps(colours2)
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def jsonToColours(string):
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data = json.loads(string)
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return [(np.array(d[0]), d[1]) for d in data]
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db = SqliteExtDatabase('images.db')
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class ColoursField(TextField):
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# db_field = 'colour'
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def db_value(self, value):
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return coloursToJson(value)
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def python_value(self, value):
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return jsonToColours(value) # convert str to UUID
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class BaseModel(Model):
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class Meta:
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database = db
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class Emotion(BaseModel):
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name = CharField(unique=True)
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class Group(BaseModel):
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name = CharField(unique=True)
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class Artwork(BaseModel):
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author = CharField()
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age = SmallIntegerField(index=True)
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gender = FixedCharField(max_length=1) # we should not really use this one
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group = ForeignKeyField(Group, related_name='artworks', index=True)
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emotion = ForeignKeyField(Emotion, related_name='artworks', index=True)
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created_date = DateTimeField(default=datetime.datetime.now)
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filename = CharField()
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colours = ColoursField() # serialised colours + percentages: [([r,g,b], percentage), ...]
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def getAges():
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r = Artwork.select(fn.Distinct(Artwork.age)).dicts()
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return [a['age'] for a in r]
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