feat: add product filters generator for item group and all products

erpnext/shopping_cart/filters.py

@@ -0,0 +1,75 @@
+# Copyright (c) 2020, Frappe Technologies Pvt. Ltd. and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+
+class ProductFiltersBuilder:
+	def __init__(self, item_group=None):
+		if not item_group or item_group == "Products Settings":
+			self.doc = frappe.get_doc("Products Settings")
+		else:
+			self.doc = frappe.get_doc("Item Group", item_group)
+
+		self.item_group = item_group
+
+	def get_field_filters(self):
+		filter_fields = [row.fieldname for row in self.doc.filter_fields]
+
+		meta = frappe.get_meta('Item')
+		fields = [df for df in meta.fields if df.fieldname in filter_fields]
+
+		filter_data = []
+		for df in fields:
+			filters = {}
+			if df.fieldtype == "Link":
+				if self.item_group:
+					filters['item_group'] = self.item_group
+
+				values =  frappe.get_all("Item", fields=[df.fieldname], filters=filters, distinct="True", pluck=df.fieldname)
+			else:
+				doctype = df.get_link_doctype()
+
+				# apply enable/disable/show_in_website filter
+				meta = frappe.get_meta(doctype)
+
+				if meta.has_field('enabled'):
+					filters['enabled'] = 1
+				if meta.has_field('disabled'):
+					filters['disabled'] = 0
+				if meta.has_field('show_in_website'):
+					filters['show_in_website'] = 1
+
+				values = [d.name for d in frappe.get_all(doctype, filters)]
+
+			# Remove None
+			values = values.remove(None) if None in values else values
+			if values:
+				filter_data.append([df, values])
+
+		return filter_data
+
+	def get_attribute_fitlers(self):
+		attributes = [row.attribute for row in self.doc.filter_attributes]
+		attribute_docs = [
+			frappe.get_doc('Item Attribute', attribute) for attribute in attributes
+		]
+
+		print(attribute_docs)
+
+		# # mark attribute values as checked if they are present in the request url
+		# if frappe.form_dict:
+		# 	for attr in attribute_docs:
+		# 		if attr.name in frappe.form_dict:
+		# 			value = frappe.form_dict[attr.name]
+		# 			if value:
+		# 				enabled_values = value.split(',')
+		# 			else:
+		# 				enabled_values = []
+
+		# 			for v in enabled_values:
+		# 				for item_attribute_row in attr.item_attribute_values:
+		# 					if v == item_attribute_row.attribute_value:
+		# 						item_attribute_row.checked = True
+
+		return attribute_docs