55 lines
2.0 KiB
Python
55 lines
2.0 KiB
Python
from flask_sqlalchemy import SQLAlchemy
|
|
from sqlalchemy import Enum, Integer, Float, String, Date, Column, Boolean
|
|
from config import item_attributes, sql_conf
|
|
from definitions.attribute import textAttribute, intAttribute, floatAttribute, dateAttribute, selectAttribute
|
|
|
|
# Initialize SQLAlchemy
|
|
db = SQLAlchemy()
|
|
|
|
# Mapping of attribute types to SQLAlchemy column types
|
|
COLUMN_TYPE_MAPPING = {
|
|
textAttribute: lambda attrib: String(attrib.max_length),
|
|
dateAttribute: lambda attrib: Date,
|
|
selectAttribute: lambda attrib: Enum(*attrib.options),
|
|
intAttribute: lambda attrib: Integer,
|
|
floatAttribute: lambda attrib: Float,
|
|
}
|
|
|
|
def _get_column_type(attrib):
|
|
"""Helper function to get the SQLAlchemy column type for an attribute."""
|
|
if type(attrib) not in COLUMN_TYPE_MAPPING:
|
|
raise ValueError(f"Unsupported attribute type: {type(attrib)} for attribute '{attrib.attrib_name}'")
|
|
return COLUMN_TYPE_MAPPING[type(attrib)](attrib)
|
|
|
|
def _get_column_properties(attrib):
|
|
"""Helper function to get the properties for a column."""
|
|
return {
|
|
'primary_key': attrib.primary,
|
|
'unique': attrib.unique,
|
|
'nullable': not attrib.required,
|
|
'default': attrib.default_val
|
|
}
|
|
|
|
def create_asset_model():
|
|
"""
|
|
Dynamically creates the Asset model based on the configuration in item_attributes.
|
|
"""
|
|
# Define the table name and basic methods
|
|
attrs = {
|
|
'__tablename__': sql_conf.SQL_TABLE,
|
|
'__init__': lambda self, **kwargs: self.__dict__.update(kwargs),
|
|
'__repr__': lambda self: f"<Asset {getattr(self, next(attrib.attrib_name for attrib in item_attributes if attrib.primary))}>"
|
|
}
|
|
|
|
# Define columns based on item_attributes
|
|
for attrib in item_attributes:
|
|
column_type = _get_column_type(attrib)
|
|
column_properties = _get_column_properties(attrib)
|
|
attrs[attrib.attrib_name] = Column(column_type, **column_properties)
|
|
|
|
# Create the Item class dynamically
|
|
Item = type('Item', (db.Model,), attrs)
|
|
return Item
|
|
|
|
# Create the Item model
|
|
Asset = create_asset_model() |