candifloss
3acbb85b08
- Split `definitions/attribute.py` into separate files under `definitions/attributes/`. - Added `__init__.py` for simplified imports. - Improved code organization and maintainability.
58 lines
2.4 KiB
Python
58 lines
2.4 KiB
Python
from flask_sqlalchemy import SQLAlchemy
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from sqlalchemy import Enum, Integer, Float, String, Date, Column, Boolean
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from config import item_attributes, sql_conf
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from definitions.attributes import *
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# Initialize SQLAlchemy
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db = SQLAlchemy()
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# Mapping of attribute types to SQLAlchemy column types
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COLUMN_TYPE_MAPPING = {
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textAttribute: lambda attrib: String(attrib.max_length), # Map text attributes to String columns
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dateAttribute: lambda attrib: Date, # Map date attributes to Date columns
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selectAttribute: lambda attrib: Enum(*attrib.options), # Map select attributes to Enum columns
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intAttribute: lambda attrib: Integer, # Map integer attributes to Integer columns
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floatAttribute: lambda attrib: Float, # Map float attributes to Float columns
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}
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def _get_column_type(attrib):
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"""Helper function to get the SQLAlchemy column type for an attribute."""
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if type(attrib) not in COLUMN_TYPE_MAPPING:
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raise ValueError(
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f"Unsupported attribute type: {type(attrib)} for attribute '{attrib.attrib_name}'. "
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f"Supported types are: {list(COLUMN_TYPE_MAPPING.keys())}"
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)
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return COLUMN_TYPE_MAPPING[type(attrib)](attrib)
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def _get_column_properties(attrib):
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"""Helper function to get the properties for a column."""
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return {
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'primary_key': attrib.primary,
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'unique': attrib.unique,
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'nullable': not attrib.required,
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'default': attrib.default_val
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}
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def create_asset_model():
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"""
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Dynamically creates the Asset model based on the configuration in item_attributes.
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"""
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# Define the table name and basic methods
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attrs = {
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'__tablename__': sql_conf.SQL_TABLE,
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'__init__': lambda self, **kwargs: self.__dict__.update(kwargs), # Allow dynamic assignment of attributes
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'__repr__': lambda self: f"<Asset {getattr(self, next(attrib.attrib_name for attrib in item_attributes if attrib.primary))}>" # Provide a readable representation of the object
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}
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# Define columns based on item_attributes
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for attrib in item_attributes:
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column_type = _get_column_type(attrib)
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column_properties = _get_column_properties(attrib)
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attrs[attrib.attrib_name] = Column(column_type, **column_properties)
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# Create the Item class dynamically
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Item = type('Item', (db.Model,), attrs)
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return Item
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# Create the Item model
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Asset = create_asset_model() |