Feat: Sale Fast Food Product by Pizza

report.py

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+from trytond.model import ModelSQL, ModelView, fields
+from trytond.pool import Pool
+from trytond.pyson import If, Eval
+from sql import Literal, Null
+from sql.aggregate import Min, Sum
+from sql.functions import CurrentTimestamp
+from trytond.transaction import Transaction
+import datetime
+
+
+class ReportSaleContext(ModelView):
+    """Contexto de reportes de miembros de familia"""
+    __name__ = 'sale_fast_food.report.context'
+
+    from_date = fields.Date(
+        "From Date",
+        domain=[
+            If(Eval('to_date') & Eval('from_date'),
+               ('from_date', '<=', Eval('to_date')),
+               ()),
+            If(Eval('from_date'),
+               ('from_date', '<=', datetime.date.today()))
+        ])
+
+    to_date = fields.Date(
+        "To Date",
+        domain=[
+            If(Eval('from_date') & Eval('to_date'),
+               ('to_date', '>=', Eval('from_date')),
+               ()),
+            If(Eval('to_date'),
+               ('to_date', '<=', datetime.date.today()))
+        ])
+
+
+class ReportSaleAbstract(ModelSQL):
+
+    @classmethod
+    def table_query(cls):
+        from_item, tables = cls._joins()
+
+        final_query = from_item.select(
+            *cls._columns(tables),
+            where=cls._where(tables),
+            group_by=cls._group_by(tables)
+        )
+
+        return final_query
+
+    @classmethod
+    def _joins(cls):
+        pool = Pool()
+        tables = {}
+
+        Sale = pool.get('sale.sale')
+        tables['sale.sale'] = sale = Sale.__table__()
+
+        SaleLine = pool.get('sale.line')
+        tables['sale.line'] = sale_line = SaleLine.__table__()
+
+        ProductTemplate = pool.get('product.template')
+        tables[
+            'product.template'
+        ] = product_template = ProductTemplate.__table__()
+
+        ProductProduct = pool.get('product.product')
+        tables['product.product'] = product = ProductProduct.__table__()
+
+        from_item = sale_line.left_join(
+            product,
+            condition=product.id == sale_line.product
+        ).left_join(
+            product_template,
+            condition=product.template == product_template.id
+        ).left_join(
+            sale,
+            condition=sale.id == sale_line.sale
+        )
+
+        return from_item, tables
+
+    @classmethod
+    def _columns(cls, tables):
+        columns = [
+            cls._column_id(tables).as_('id'),
+            Literal(0).as_('create_uid'),
+            CurrentTimestamp().as_('create_date'),
+            cls.write_uid.sql_cast(Literal(Null)).as_('write_uid'),
+            cls.write_date.sql_cast(Literal(Null)).as_('write_date'),
+        ]
+
+        return columns
+
+    @classmethod
+    def _where(cls, tables):
+        context = Transaction().context
+        where = Literal(True)
+
+        from_date = context.get('from_date')
+        to_date = context.get('to_date')
+
+        sale = tables['sale.sale']
+        if from_date:
+            where &= sale.sale_date >= from_date
+
+        if to_date:
+            where &= sale.sale_date <= to_date
+
+        return where
+
+    @classmethod
+    def _group_by(cls, tables):
+        raise NotImplementedError()
+
+    @classmethod
+    def _column_id(cls, tables):
+        sale_line = tables['sale.line']
+        return Min(sale_line.id)
+
+
+class ReportSaleProduct(ReportSaleAbstract, ModelView):
+    """Report Sale Group by Product"""
+    __name__ = 'sale_fast_food.reporting.product'
+
+    product_pizza = fields.Many2One('product.product', "Product")
+    quantity = fields.Float("Quantity")
+
+    @classmethod
+    def _columns(cls, tables):
+        sale_line = tables['sale.line']
+
+        return super(ReportSaleProduct, cls)._columns(tables) + [
+            sale_line.product.as_('product_pizza'),
+            Sum(sale_line.quantity).as_('quantity')
+        ]
+
+    @classmethod
+    def _group_by(cls, tables):
+        sale_line = tables['sale.line']
+
+        return [
+            sale_line.product
+        ]
+
+    @classmethod
+    def _where(cls, tables):
+        where = super(ReportSaleProduct, cls)._where(tables)
+        product_template = tables['product.template']
+        where &= product_template.pizza == Literal(True)
+
+        return where