feat: add ProductQuery engine

erpnext/shopping_cart/product_query.py

@@ -0,0 +1,89 @@
+# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+
+class ProductQuery:
+	"""Query engine for product listing
+	
+	Attributes:
+	    cart_settings (Document): Settings for Cart
+	    fields (list): Fields to fetch in query
+	    filters (list)
+	    or_filters (list)
+	    page_length (Int): Length of page for the query
+	    settings (Document): Products Settings DocType
+	"""
+
+	def __init__(self):
+		self.settings = frappe.get_doc("Products Settings")
+		self.cart_settings = frappe.get_doc("Shopping Cart Settings")
+		self.page_length = self.settings.products_per_page or 20
+		self.fields = ['name', 'item_name', 'website_image', 'variant_of', 'has_variants', 'item_group', 'image', 'web_long_description', 'description', 'route']
+		self.filters = [['show_in_website', '=', 1]]
+		self.or_filters = []
+
+	def query(self, attributes=None, fields=None, search_term=None, start=0):
+		if fields: self.build_fields_filters(fields)
+		if search_term: self.build_search_filters(search_term)
+		
+		result = []
+
+		if attributes:
+			all_items = []
+			for attribute, values in attributes.items():
+				if not isinstance(values, list):
+					values = [values]
+
+				items = frappe.get_all(
+					"Item",
+					fields=self.fields,
+					filters=[
+						*self.filters,
+						["Item Variant Attribute", "attribute", "=", attribute],`
+						["Item Variant Attribute", "attribute_value", "in", values],
+					],
+					or_filters=self.or_filters,
+					limit=self.page_length
+				)
+
+				items_dict = {item.name: item for item in items}
+
+				all_items.append(set(items.keys()))
+
+			result = [items_dict.get(item) for item in list(set.intersection(*all_items))]
+		else:
+			result = frappe.get_all("Item", fields=self.fields, filters=self.filters, or_filters=self.or_filters, limit=self.page_length)
+
+		return result
+
+	def build_fields_filters(self, filters):
+		for field, values in filters.items():
+			if not values:
+				continue
+			
+			if isinstance(values, list):
+				self.filters.append([field, 'IN', values])
+			else:
+				self.filters.append([field, '=', values])
+
+	def build_search_filters(self, search_term):
+		# Default fields to search from
+		default_fields = {'name', 'item_name', 'description', 'item_group'}
+
+		# Get meta search fields
+		meta = frappe.get_meta("Item")
+		meta_fields = set(meta.get_search_fields())
+
+		# Join the meta fields and default fields set
+		search_fields = default_fields.union(meta_fields)
+		try:
+			if frappe.db.count('Item', cache=True) > 50000:
+				search_fields.remove('description')
+		except KeyError:
+			pass
+
+		# Build or filters for query
+		search = '%{}%'.format(search_term)
+		self.or_filters += [[field, 'like', search] for field in search_fields]

erpnext/www/all-products/index.py

@@ -1,6 +1,7 @@
 import frappe
 from erpnext.portal.product_configurator.utils import (get_products_for_website, get_product_settings,
 	get_field_filter_data, get_attribute_filter_data)
+from erpnext.shopping_cart.product_query import ProductQuery
 
 sitemap = 1
 
@@ -12,10 +13,14 @@ def get_context(context):
 		attribute_filters = frappe.parse_json(frappe.form_dict.attribute_filters)
 	else:
 		search = field_filters = attribute_filters = None
-
-	context.items = get_products_for_website(field_filters, attribute_filters, search)
+	
+	# items = get_products_for_website(field_filters, attribute_filters, search)
+	
+	engine = ProductQuery()
+	items = engine.query(attribute_filters, field_filters, search)
 
 	product_settings = get_product_settings()
+	context.items = items
 	context.field_filters = get_field_filter_data() \
 		if product_settings.enable_field_filters else []
 
@@ -23,6 +28,7 @@ def get_context(context):
 		if product_settings.enable_attribute_filters else []
 
 	context.product_settings = product_settings
+	context.body_class = "product-page"
 	context.page_length = product_settings.products_per_page
 
 	context.no_cache = 1