54bf9880b9
This commit implements a comprehensive inventory management system for small businesses using FastAPI and SQLAlchemy. Features include: - Product and category management - Inventory tracking across multiple locations - Supplier management - Purchase management - Transaction tracking for inventory movements - Complete API documentation generated with BackendIM... (backend.im)
220 lines
9.7 KiB
Python
220 lines
9.7 KiB
Python
"""initial migration
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Revision ID: 001
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Revises:
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Create Date: 2025-05-12
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"""
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy import Column, Integer, String, Float, DateTime, Text, Boolean, ForeignKey, Enum
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import enum
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# revision identifiers, used by Alembic.
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revision = '001'
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down_revision = None
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branch_labels = None
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depends_on = None
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# Enum classes for migration
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class LocationType(str, enum.Enum):
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WAREHOUSE = "warehouse"
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STORE = "store"
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SUPPLIER = "supplier"
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class TransactionType(str, enum.Enum):
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PURCHASE = "purchase"
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SALE = "sale"
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TRANSFER = "transfer"
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ADJUSTMENT = "adjustment"
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RETURN = "return"
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def upgrade():
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# Categories table
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op.create_table(
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'categories',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('created_at', sa.DateTime(), nullable=True),
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sa.Column('updated_at', sa.DateTime(), nullable=True),
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sa.Column('name', sa.String(length=100), nullable=False),
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sa.Column('description', sa.Text(), nullable=True),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_categories_id'), 'categories', ['id'], unique=False)
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op.create_index(op.f('ix_categories_name'), 'categories', ['name'], unique=True)
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# Products table
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op.create_table(
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'products',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('created_at', sa.DateTime(), nullable=True),
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sa.Column('updated_at', sa.DateTime(), nullable=True),
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sa.Column('name', sa.String(length=255), nullable=False),
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sa.Column('description', sa.Text(), nullable=True),
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sa.Column('sku', sa.String(length=50), nullable=False),
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sa.Column('category_id', sa.Integer(), nullable=True),
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sa.Column('price', sa.Float(), nullable=False),
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sa.Column('cost_price', sa.Float(), nullable=False),
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sa.Column('barcode', sa.String(length=100), nullable=True),
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sa.ForeignKeyConstraint(['category_id'], ['categories.id'], ),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_products_id'), 'products', ['id'], unique=False)
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op.create_index(op.f('ix_products_name'), 'products', ['name'], unique=False)
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op.create_index(op.f('ix_products_sku'), 'products', ['sku'], unique=True)
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op.create_index(op.f('ix_products_barcode'), 'products', ['barcode'], unique=True)
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# Locations table
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op.create_table(
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'locations',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('created_at', sa.DateTime(), nullable=True),
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sa.Column('updated_at', sa.DateTime(), nullable=True),
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sa.Column('name', sa.String(length=100), nullable=False),
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sa.Column('type', sa.Enum('warehouse', 'store', 'supplier', name='locationtype'), nullable=False),
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sa.Column('address', sa.String(length=255), nullable=True),
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sa.Column('description', sa.String(length=255), nullable=True),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_locations_id'), 'locations', ['id'], unique=False)
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# Inventory Transactions table
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op.create_table(
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'inventory_transactions',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('created_at', sa.DateTime(), nullable=True),
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sa.Column('updated_at', sa.DateTime(), nullable=True),
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sa.Column('type', sa.Enum('purchase', 'sale', 'transfer', 'adjustment', 'return', name='transactiontype'), nullable=False),
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sa.Column('reference_id', sa.String(length=100), nullable=True),
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sa.Column('notes', sa.String(length=255), nullable=True),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_inventory_transactions_id'), 'inventory_transactions', ['id'], unique=False)
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# Inventory Items table
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op.create_table(
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'inventory_items',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('created_at', sa.DateTime(), nullable=True),
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sa.Column('updated_at', sa.DateTime(), nullable=True),
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sa.Column('product_id', sa.Integer(), nullable=False),
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sa.Column('location_id', sa.Integer(), nullable=False),
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sa.Column('quantity', sa.Float(), nullable=False),
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sa.Column('minimum_stock', sa.Float(), nullable=False),
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sa.Column('maximum_stock', sa.Float(), nullable=True),
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sa.ForeignKeyConstraint(['location_id'], ['locations.id'], ),
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sa.ForeignKeyConstraint(['product_id'], ['products.id'], ),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_inventory_items_id'), 'inventory_items', ['id'], unique=False)
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# Inventory Transaction Items table
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op.create_table(
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'inventory_transaction_items',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('created_at', sa.DateTime(), nullable=True),
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sa.Column('updated_at', sa.DateTime(), nullable=True),
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sa.Column('transaction_id', sa.Integer(), nullable=False),
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sa.Column('product_id', sa.Integer(), nullable=False),
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sa.Column('quantity', sa.Float(), nullable=False),
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sa.Column('from_location_id', sa.Integer(), nullable=True),
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sa.Column('to_location_id', sa.Integer(), nullable=True),
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sa.ForeignKeyConstraint(['from_location_id'], ['locations.id'], ),
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sa.ForeignKeyConstraint(['product_id'], ['products.id'], ),
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sa.ForeignKeyConstraint(['to_location_id'], ['locations.id'], ),
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sa.ForeignKeyConstraint(['transaction_id'], ['inventory_transactions.id'], ),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_inventory_transaction_items_id'), 'inventory_transaction_items', ['id'], unique=False)
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# Suppliers table
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op.create_table(
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'suppliers',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('created_at', sa.DateTime(), nullable=True),
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sa.Column('updated_at', sa.DateTime(), nullable=True),
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sa.Column('name', sa.String(length=255), nullable=False),
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sa.Column('contact_name', sa.String(length=100), nullable=True),
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sa.Column('email', sa.String(length=255), nullable=True),
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sa.Column('phone', sa.String(length=20), nullable=True),
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sa.Column('address', sa.Text(), nullable=True),
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sa.Column('notes', sa.Text(), nullable=True),
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sa.Column('is_active', sa.Boolean(), nullable=True),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_suppliers_id'), 'suppliers', ['id'], unique=False)
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op.create_index(op.f('ix_suppliers_name'), 'suppliers', ['name'], unique=False)
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# Purchases table
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op.create_table(
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'purchases',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('created_at', sa.DateTime(), nullable=True),
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sa.Column('updated_at', sa.DateTime(), nullable=True),
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sa.Column('supplier_id', sa.Integer(), nullable=False),
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sa.Column('reference_number', sa.String(length=100), nullable=True),
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sa.Column('order_date', sa.DateTime(), nullable=True),
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sa.Column('delivery_date', sa.DateTime(), nullable=True),
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sa.Column('total_amount', sa.Float(), nullable=False),
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sa.Column('notes', sa.Text(), nullable=True),
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sa.ForeignKeyConstraint(['supplier_id'], ['suppliers.id'], ),
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sa.PrimaryKeyConstraint('id'),
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sa.UniqueConstraint('reference_number')
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)
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op.create_index(op.f('ix_purchases_id'), 'purchases', ['id'], unique=False)
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# Purchase Items table
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op.create_table(
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'purchase_items',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('created_at', sa.DateTime(), nullable=True),
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sa.Column('updated_at', sa.DateTime(), nullable=True),
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sa.Column('purchase_id', sa.Integer(), nullable=False),
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sa.Column('product_id', sa.Integer(), nullable=False),
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sa.Column('quantity', sa.Float(), nullable=False),
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sa.Column('unit_price', sa.Float(), nullable=False),
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sa.Column('total_price', sa.Float(), nullable=False),
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sa.ForeignKeyConstraint(['product_id'], ['products.id'], ),
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sa.ForeignKeyConstraint(['purchase_id'], ['purchases.id'], ),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_index(op.f('ix_purchase_items_id'), 'purchase_items', ['id'], unique=False)
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def downgrade():
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# Drop tables in reverse order (considering foreign key constraints)
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op.drop_index(op.f('ix_purchase_items_id'), table_name='purchase_items')
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op.drop_table('purchase_items')
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op.drop_index(op.f('ix_purchases_id'), table_name='purchases')
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op.drop_table('purchases')
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op.drop_index(op.f('ix_suppliers_name'), table_name='suppliers')
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op.drop_index(op.f('ix_suppliers_id'), table_name='suppliers')
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op.drop_table('suppliers')
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op.drop_index(op.f('ix_inventory_transaction_items_id'), table_name='inventory_transaction_items')
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op.drop_table('inventory_transaction_items')
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op.drop_index(op.f('ix_inventory_items_id'), table_name='inventory_items')
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op.drop_table('inventory_items')
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op.drop_index(op.f('ix_inventory_transactions_id'), table_name='inventory_transactions')
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op.drop_table('inventory_transactions')
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op.drop_index(op.f('ix_locations_id'), table_name='locations')
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op.drop_table('locations')
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op.drop_index(op.f('ix_products_barcode'), table_name='products')
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op.drop_index(op.f('ix_products_sku'), table_name='products')
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op.drop_index(op.f('ix_products_name'), table_name='products')
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op.drop_index(op.f('ix_products_id'), table_name='products')
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op.drop_table('products')
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op.drop_index(op.f('ix_categories_name'), table_name='categories')
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op.drop_index(op.f('ix_categories_id'), table_name='categories')
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op.drop_table('categories')
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# Drop enum types
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op.execute("DROP TYPE locationtype")
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op.execute("DROP TYPE transactiontype") |