262 lines
8.8 KiB
Python
262 lines
8.8 KiB
Python
#This file is part of Tryton. The COPYRIGHT file at the top level of
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#this repository contains the full copyright notices and license terms.
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from trytond.model import ModelView, ModelSQL, fields
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from trytond.wizard import Wizard, StateView, Button
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from trytond.transaction import Transaction
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from trytond.pyson import Eval
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from trytond.pool import Pool
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__all__ = ['BOM', 'BOMInput', 'BOMOutput', 'BOMTree', 'OpenBOMTreeStart',
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'OpenBOMTreeTree', 'OpenBOMTree']
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class BOM(ModelSQL, ModelView):
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"Bill of Material"
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__name__ = 'production.bom'
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name = fields.Char('Name', required=True, translate=True)
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active = fields.Boolean('Active', select=1)
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inputs = fields.One2Many('production.bom.input', 'bom', 'Inputs')
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outputs = fields.One2Many('production.bom.output', 'bom', 'Outputs')
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output_products = fields.Many2Many('production.bom.output',
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'bom', 'product', 'Output Products')
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@staticmethod
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def default_active():
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return True
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def compute_factor(self, product, quantity, uom):
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'''
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Compute factor for an output product
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'''
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Uom = Pool().get('product.uom')
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for output in self.outputs:
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if output.product == product:
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if not output.quantity:
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return 0.0
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quantity = Uom.compute_qty(uom, quantity,
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output.uom, round=False)
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return quantity / output.quantity
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@classmethod
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def copy(cls, records, default=None):
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if default is None:
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default = {}
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else:
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default = default.copy()
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default['output_products'] = False
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return super(BOM, cls).copy(records, default=default)
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class BOMInput(ModelSQL, ModelView):
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"Bill of Material Input"
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__name__ = 'production.bom.input'
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_rec_name = 'product'
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bom = fields.Many2One('production.bom', 'BOM', required=True,
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select=1, ondelete='CASCADE')
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product = fields.Many2One('product.product', 'Product',
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required=True, domain=[
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('type', '!=', 'service'),
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])
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uom_category = fields.Function(fields.Many2One(
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'product.uom.category', 'Uom Category'), 'on_change_with_uom_category')
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uom = fields.Many2One('product.uom', 'Uom', required=True,
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domain=[
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('category', '=', Eval('uom_category')),
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], depends=['uom_category'])
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unit_digits = fields.Function(fields.Integer('Unit Digits'),
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'on_change_with_unit_digits')
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quantity = fields.Float('Quantity', required=True,
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domain=[('quantity', '>=', 0)],
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digits=(16, Eval('unit_digits', 2)),
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depends=['unit_digits'])
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@classmethod
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def __setup__(cls):
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super(BOMInput, cls).__setup__()
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cls._sql_constraints = [
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('product_bom_uniq', 'UNIQUE(product, bom)',
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'product_bom_uniq'),
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]
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cls._error_messages.update({
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'product_bom_uniq': 'Product must be unique per BOM.',
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'recursive_bom': 'You can not create recursive BOMs.',
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})
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@fields.depends('product', 'uom')
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def on_change_product(self):
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res = {}
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if self.product:
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uoms = self.product.default_uom.category.uoms
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if (not self.uom or self.uom not in uoms):
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res['uom'] = self.product.default_uom.id
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res['uom.rec_name'] = self.product.default_uom.rec_name
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res['unit_digits'] = self.product.default_uom.digits
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else:
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res['uom'] = None
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res['uom.rec_name'] = ''
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res['unit_digits'] = 2
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return res
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@fields.depends('product')
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def on_change_with_uom_category(self, name=None):
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if self.product:
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return self.product.default_uom.category.id
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@fields.depends('uom')
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def on_change_with_unit_digits(self, name=None):
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if self.uom:
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return self.uom.digits
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return 2
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@classmethod
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def validate(cls, boms):
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super(BOMInput, cls).validate(boms)
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for bom in boms:
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bom.check_bom_recursion()
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def check_bom_recursion(self):
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'''
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Check BOM recursion
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'''
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self.product.check_bom_recursion()
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def compute_quantity(self, factor):
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Uom = Pool().get('product.uom')
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return Uom.round(self.quantity * factor, self.uom.rounding)
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class BOMOutput(BOMInput):
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"Bill of Material Output"
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__name__ = 'production.bom.output'
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_table = 'production_bom_output' # Needed to override BOMInput._table
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class BOMTree(ModelView):
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'BOM Tree'
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__name__ = 'production.bom.tree'
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product = fields.Many2One('product.product', 'Product')
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quantity = fields.Float('Quantity', digits=(16, Eval('unit_digits', 2)),
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depends=['unit_digits'])
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uom = fields.Many2One('product.uom', 'Uom')
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unit_digits = fields.Integer('Unit Digits')
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childs = fields.One2Many('production.bom.tree', None, 'Childs')
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@classmethod
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def tree(cls, product, quantity, uom, bom=None):
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Input = Pool().get('production.bom.input')
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result = []
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if bom is None:
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if not product.boms:
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return result
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bom = product.boms[0].bom
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factor = bom.compute_factor(product, quantity, uom)
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for input_ in bom.inputs:
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quantity = Input.compute_quantity(input_, factor)
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childs = cls.tree(input_.product, quantity, input_.uom)
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values = {
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'product': input_.product.id,
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'quantity': quantity,
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'uom': input_.uom.id,
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'unit_digits': input_.uom.digits,
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'childs': childs,
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}
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result.append(values)
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return result
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class OpenBOMTreeStart(ModelView):
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'Open BOM Tree'
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__name__ = 'production.bom.tree.open.start'
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quantity = fields.Float('Quantity', required=True,
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digits=(16, Eval('unit_digits', 2)), depends=['unit_digits'])
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uom = fields.Many2One('product.uom', 'Unit', required=True,
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domain=[
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('category', '=', Eval('category')),
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], depends=['category'])
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unit_digits = fields.Integer('Unit Digits', readonly=True)
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category = fields.Many2One('product.uom.category', 'Category',
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readonly=True)
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bom = fields.Many2One('product.product-production.bom',
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'BOM', required=True, domain=[
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('product', '=', Eval('product')),
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], depends=['product'])
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product = fields.Many2One('product.product', 'Product', readonly=True)
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@fields.depends('uom')
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def on_change_with_unit_digits(self):
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if self.uom:
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return self.uom.digits
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return 2
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class OpenBOMTreeTree(ModelView):
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'Open BOM Tree'
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__name__ = 'production.bom.tree.open.tree'
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bom_tree = fields.One2Many('production.bom.tree', None, 'BOM Tree')
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@classmethod
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def tree(cls, bom, product, quantity, uom):
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pool = Pool()
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Tree = pool.get('production.bom.tree')
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childs = Tree.tree(product, quantity, uom, bom=bom)
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bom_tree = [{
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'product': product.id,
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'quantity': quantity,
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'uom': uom.id,
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'unit_digits': uom.digits,
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'childs': childs,
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}]
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return {
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'bom_tree': bom_tree,
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}
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class OpenBOMTree(Wizard):
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'Open BOM Tree'
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__name__ = 'production.bom.tree.open'
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start = StateView('production.bom.tree.open.start',
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'production.bom_tree_open_start_view_form', [
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Button('Cancel', 'end', 'tryton-cancel'),
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Button('Ok', 'tree', 'tryton-ok', True),
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])
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tree = StateView('production.bom.tree.open.tree',
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'production.bom_tree_open_tree_view_form', [
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Button('Change', 'start', 'tryton-go-previous'),
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Button('Close', 'end', 'tryton-close'),
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])
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def default_start(self, fields):
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Product = Pool().get('product.product')
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defaults = {}
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product = Product(Transaction().context['active_id'])
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defaults['category'] = product.default_uom.category.id
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if getattr(self.start, 'uom', None):
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defaults['uom'] = self.start.uom.id
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defaults['unit_digits'] = self.start.unit_digits
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else:
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defaults['uom'] = product.default_uom.id
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defaults['unit_digits'] = product.default_uom.digits
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defaults['product'] = product.id
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if getattr(self.start, 'bom', None):
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defaults['bom'] = self.start.bom.id
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elif product.boms:
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defaults['bom'] = product.boms[0].id
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defaults['quantity'] = getattr(self.start, 'quantity', None)
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return defaults
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def default_tree(self, fields):
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pool = Pool()
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BomTree = pool.get('production.bom.tree.open.tree')
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return BomTree.tree(self.start.bom.bom, self.start.product,
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self.start.quantity, self.start.uom)
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