You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
347 lines
12 KiB
347 lines
12 KiB
# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
|
|
# License: GNU General Public License v3. See license.txt
|
|
|
|
|
|
import copy
|
|
import json
|
|
|
|
import frappe
|
|
from frappe import _
|
|
from frappe.utils import cstr, flt
|
|
|
|
|
|
class ItemVariantExistsError(frappe.ValidationError): pass
|
|
class InvalidItemAttributeValueError(frappe.ValidationError): pass
|
|
class ItemTemplateCannotHaveStock(frappe.ValidationError): pass
|
|
|
|
@frappe.whitelist()
|
|
def get_variant(template, args=None, variant=None, manufacturer=None,
|
|
manufacturer_part_no=None):
|
|
"""Validates Attributes and their Values, then looks for an exactly
|
|
matching Item Variant
|
|
|
|
:param item: Template Item
|
|
:param args: A dictionary with "Attribute" as key and "Attribute Value" as value
|
|
"""
|
|
item_template = frappe.get_doc('Item', template)
|
|
|
|
if item_template.variant_based_on=='Manufacturer' and manufacturer:
|
|
return make_variant_based_on_manufacturer(item_template, manufacturer,
|
|
manufacturer_part_no)
|
|
else:
|
|
if isinstance(args, str):
|
|
args = json.loads(args)
|
|
|
|
if not args:
|
|
frappe.throw(_("Please specify at least one attribute in the Attributes table"))
|
|
return find_variant(template, args, variant)
|
|
|
|
def make_variant_based_on_manufacturer(template, manufacturer, manufacturer_part_no):
|
|
'''Make and return a new variant based on manufacturer and
|
|
manufacturer part no'''
|
|
from frappe.model.naming import append_number_if_name_exists
|
|
|
|
variant = frappe.new_doc('Item')
|
|
|
|
copy_attributes_to_variant(template, variant)
|
|
|
|
variant.manufacturer = manufacturer
|
|
variant.manufacturer_part_no = manufacturer_part_no
|
|
|
|
variant.item_code = append_number_if_name_exists('Item', template.name)
|
|
|
|
return variant
|
|
|
|
def validate_item_variant_attributes(item, args=None):
|
|
if isinstance(item, str):
|
|
item = frappe.get_doc('Item', item)
|
|
|
|
if not args:
|
|
args = {d.attribute.lower():d.attribute_value for d in item.attributes}
|
|
|
|
attribute_values, numeric_values = get_attribute_values(item)
|
|
|
|
for attribute, value in args.items():
|
|
if not value:
|
|
continue
|
|
|
|
if attribute.lower() in numeric_values:
|
|
numeric_attribute = numeric_values[attribute.lower()]
|
|
validate_is_incremental(numeric_attribute, attribute, value, item.name)
|
|
|
|
else:
|
|
attributes_list = attribute_values.get(attribute.lower(), [])
|
|
validate_item_attribute_value(attributes_list, attribute, value, item.name, from_variant=True)
|
|
|
|
def validate_is_incremental(numeric_attribute, attribute, value, item):
|
|
from_range = numeric_attribute.from_range
|
|
to_range = numeric_attribute.to_range
|
|
increment = numeric_attribute.increment
|
|
|
|
if increment == 0:
|
|
# defensive validation to prevent ZeroDivisionError
|
|
frappe.throw(_("Increment for Attribute {0} cannot be 0").format(attribute))
|
|
|
|
is_in_range = from_range <= flt(value) <= to_range
|
|
precision = max(len(cstr(v).split(".")[-1].rstrip("0")) for v in (value, increment))
|
|
#avoid precision error by rounding the remainder
|
|
remainder = flt((flt(value) - from_range) % increment, precision)
|
|
|
|
is_incremental = remainder==0 or remainder==increment
|
|
|
|
if not (is_in_range and is_incremental):
|
|
frappe.throw(_("Value for Attribute {0} must be within the range of {1} to {2} in the increments of {3} for Item {4}")\
|
|
.format(attribute, from_range, to_range, increment, item),
|
|
InvalidItemAttributeValueError, title=_('Invalid Attribute'))
|
|
|
|
def validate_item_attribute_value(attributes_list, attribute, attribute_value, item, from_variant=True):
|
|
allow_rename_attribute_value = frappe.db.get_single_value('Item Variant Settings', 'allow_rename_attribute_value')
|
|
if allow_rename_attribute_value:
|
|
pass
|
|
elif attribute_value not in attributes_list:
|
|
if from_variant:
|
|
frappe.throw(_("{0} is not a valid Value for Attribute {1} of Item {2}.").format(
|
|
frappe.bold(attribute_value), frappe.bold(attribute), frappe.bold(item)), InvalidItemAttributeValueError, title=_("Invalid Value"))
|
|
else:
|
|
msg = _("The value {0} is already assigned to an existing Item {1}.").format(
|
|
frappe.bold(attribute_value), frappe.bold(item))
|
|
msg += "<br>" + _("To still proceed with editing this Attribute Value, enable {0} in Item Variant Settings.").format(frappe.bold("Allow Rename Attribute Value"))
|
|
|
|
frappe.throw(msg, InvalidItemAttributeValueError, title=_('Edit Not Allowed'))
|
|
|
|
def get_attribute_values(item):
|
|
if not frappe.flags.attribute_values:
|
|
attribute_values = {}
|
|
numeric_values = {}
|
|
for t in frappe.get_all("Item Attribute Value", fields=["parent", "attribute_value"]):
|
|
attribute_values.setdefault(t.parent.lower(), []).append(t.attribute_value)
|
|
|
|
for t in frappe.get_all('Item Variant Attribute',
|
|
fields=["attribute", "from_range", "to_range", "increment"],
|
|
filters={'numeric_values': 1, 'parent': item.variant_of}):
|
|
numeric_values[t.attribute.lower()] = t
|
|
|
|
frappe.flags.attribute_values = attribute_values
|
|
frappe.flags.numeric_values = numeric_values
|
|
|
|
return frappe.flags.attribute_values, frappe.flags.numeric_values
|
|
|
|
def find_variant(template, args, variant_item_code=None):
|
|
conditions = ["""(iv_attribute.attribute={0} and iv_attribute.attribute_value={1})"""\
|
|
.format(frappe.db.escape(key), frappe.db.escape(cstr(value))) for key, value in args.items()]
|
|
|
|
conditions = " or ".join(conditions)
|
|
|
|
from erpnext.portal.product_configurator.utils import get_item_codes_by_attributes
|
|
possible_variants = [i for i in get_item_codes_by_attributes(args, template) if i != variant_item_code]
|
|
|
|
for variant in possible_variants:
|
|
variant = frappe.get_doc("Item", variant)
|
|
|
|
if len(args.keys()) == len(variant.get("attributes")):
|
|
# has the same number of attributes and values
|
|
# assuming no duplication as per the validation in Item
|
|
match_count = 0
|
|
|
|
for attribute, value in args.items():
|
|
for row in variant.attributes:
|
|
if row.attribute==attribute and row.attribute_value== cstr(value):
|
|
# this row matches
|
|
match_count += 1
|
|
break
|
|
|
|
if match_count == len(args.keys()):
|
|
return variant.name
|
|
|
|
@frappe.whitelist()
|
|
def create_variant(item, args):
|
|
if isinstance(args, str):
|
|
args = json.loads(args)
|
|
|
|
template = frappe.get_doc("Item", item)
|
|
variant = frappe.new_doc("Item")
|
|
variant.variant_based_on = 'Item Attribute'
|
|
variant_attributes = []
|
|
|
|
for d in template.attributes:
|
|
variant_attributes.append({
|
|
"attribute": d.attribute,
|
|
"attribute_value": args.get(d.attribute)
|
|
})
|
|
|
|
variant.set("attributes", variant_attributes)
|
|
copy_attributes_to_variant(template, variant)
|
|
make_variant_item_code(template.item_code, template.item_name, variant)
|
|
|
|
return variant
|
|
|
|
@frappe.whitelist()
|
|
def enqueue_multiple_variant_creation(item, args):
|
|
# There can be innumerable attribute combinations, enqueue
|
|
if isinstance(args, str):
|
|
variants = json.loads(args)
|
|
total_variants = 1
|
|
for key in variants:
|
|
total_variants *= len(variants[key])
|
|
if total_variants >= 600:
|
|
frappe.throw(_("Please do not create more than 500 items at a time"))
|
|
return
|
|
if total_variants < 10:
|
|
return create_multiple_variants(item, args)
|
|
else:
|
|
frappe.enqueue("erpnext.controllers.item_variant.create_multiple_variants",
|
|
item=item, args=args, now=frappe.flags.in_test);
|
|
return 'queued'
|
|
|
|
def create_multiple_variants(item, args):
|
|
count = 0
|
|
if isinstance(args, str):
|
|
args = json.loads(args)
|
|
|
|
args_set = generate_keyed_value_combinations(args)
|
|
|
|
for attribute_values in args_set:
|
|
if not get_variant(item, args=attribute_values):
|
|
variant = create_variant(item, attribute_values)
|
|
variant.save()
|
|
count +=1
|
|
|
|
return count
|
|
|
|
def generate_keyed_value_combinations(args):
|
|
"""
|
|
From this:
|
|
|
|
args = {"attr1": ["a", "b", "c"], "attr2": ["1", "2"], "attr3": ["A"]}
|
|
|
|
To this:
|
|
|
|
[
|
|
{u'attr1': u'a', u'attr2': u'1', u'attr3': u'A'},
|
|
{u'attr1': u'b', u'attr2': u'1', u'attr3': u'A'},
|
|
{u'attr1': u'c', u'attr2': u'1', u'attr3': u'A'},
|
|
{u'attr1': u'a', u'attr2': u'2', u'attr3': u'A'},
|
|
{u'attr1': u'b', u'attr2': u'2', u'attr3': u'A'},
|
|
{u'attr1': u'c', u'attr2': u'2', u'attr3': u'A'}
|
|
]
|
|
|
|
"""
|
|
# Return empty list if empty
|
|
if not args:
|
|
return []
|
|
|
|
# Turn `args` into a list of lists of key-value tuples:
|
|
# [
|
|
# [(u'attr2', u'1'), (u'attr2', u'2')],
|
|
# [(u'attr3', u'A')],
|
|
# [(u'attr1', u'a'), (u'attr1', u'b'), (u'attr1', u'c')]
|
|
# ]
|
|
key_value_lists = [[(key, val) for val in args[key]] for key in args.keys()]
|
|
|
|
# Store the first, but as objects
|
|
# [{u'attr2': u'1'}, {u'attr2': u'2'}]
|
|
results = key_value_lists.pop(0)
|
|
results = [{d[0]: d[1]} for d in results]
|
|
|
|
# Iterate the remaining
|
|
# Take the next list to fuse with existing results
|
|
for l in key_value_lists:
|
|
new_results = []
|
|
for res in results:
|
|
for key_val in l:
|
|
# create a new clone of object in result
|
|
obj = copy.deepcopy(res)
|
|
# to be used with every incoming new value
|
|
obj[key_val[0]] = key_val[1]
|
|
# and pushed into new_results
|
|
new_results.append(obj)
|
|
results = new_results
|
|
|
|
return results
|
|
|
|
def copy_attributes_to_variant(item, variant):
|
|
# copy non no-copy fields
|
|
|
|
exclude_fields = ["naming_series", "item_code", "item_name", "show_in_website",
|
|
"show_variant_in_website", "opening_stock", "variant_of", "valuation_rate",
|
|
"has_variants", "attributes"]
|
|
|
|
if item.variant_based_on=='Manufacturer':
|
|
# don't copy manufacturer values if based on part no
|
|
exclude_fields += ['manufacturer', 'manufacturer_part_no']
|
|
|
|
allow_fields = [d.field_name for d in frappe.get_all("Variant Field", fields = ['field_name'])]
|
|
if "variant_based_on" not in allow_fields:
|
|
allow_fields.append("variant_based_on")
|
|
for field in item.meta.fields:
|
|
# "Table" is part of `no_value_field` but we shouldn't ignore tables
|
|
if (field.reqd or field.fieldname in allow_fields) and field.fieldname not in exclude_fields:
|
|
if variant.get(field.fieldname) != item.get(field.fieldname):
|
|
if field.fieldtype == "Table":
|
|
variant.set(field.fieldname, [])
|
|
for d in item.get(field.fieldname):
|
|
row = copy.deepcopy(d)
|
|
if row.get("name"):
|
|
row.name = None
|
|
variant.append(field.fieldname, row)
|
|
else:
|
|
variant.set(field.fieldname, item.get(field.fieldname))
|
|
|
|
variant.variant_of = item.name
|
|
|
|
if 'description' not in allow_fields:
|
|
if not variant.description:
|
|
variant.description = ""
|
|
else:
|
|
if item.variant_based_on=='Item Attribute':
|
|
if variant.attributes:
|
|
attributes_description = item.description + " "
|
|
for d in variant.attributes:
|
|
attributes_description += "<div>" + d.attribute + ": " + cstr(d.attribute_value) + "</div>"
|
|
|
|
if attributes_description not in variant.description:
|
|
variant.description = attributes_description
|
|
|
|
def make_variant_item_code(template_item_code, template_item_name, variant):
|
|
"""Uses template's item code and abbreviations to make variant's item code"""
|
|
if variant.item_code:
|
|
return
|
|
|
|
abbreviations = []
|
|
for attr in variant.attributes:
|
|
item_attribute = frappe.db.sql("""select i.numeric_values, v.abbr
|
|
from `tabItem Attribute` i left join `tabItem Attribute Value` v
|
|
on (i.name=v.parent)
|
|
where i.name=%(attribute)s and (v.attribute_value=%(attribute_value)s or i.numeric_values = 1)""", {
|
|
"attribute": attr.attribute,
|
|
"attribute_value": attr.attribute_value
|
|
}, as_dict=True)
|
|
|
|
if not item_attribute:
|
|
continue
|
|
# frappe.throw(_('Invalid attribute {0} {1}').format(frappe.bold(attr.attribute),
|
|
# frappe.bold(attr.attribute_value)), title=_('Invalid Attribute'),
|
|
# exc=InvalidItemAttributeValueError)
|
|
|
|
abbr_or_value = cstr(attr.attribute_value) if item_attribute[0].numeric_values else item_attribute[0].abbr
|
|
abbreviations.append(abbr_or_value)
|
|
|
|
if abbreviations:
|
|
variant.item_code = "{0}-{1}".format(template_item_code, "-".join(abbreviations))
|
|
variant.item_name = "{0}-{1}".format(template_item_name, "-".join(abbreviations))
|
|
|
|
@frappe.whitelist()
|
|
def create_variant_doc_for_quick_entry(template, args):
|
|
variant_based_on = frappe.db.get_value("Item", template, "variant_based_on")
|
|
args = json.loads(args)
|
|
if variant_based_on == "Manufacturer":
|
|
variant = get_variant(template, **args)
|
|
else:
|
|
existing_variant = get_variant(template, args)
|
|
if existing_variant:
|
|
return existing_variant
|
|
else:
|
|
variant = create_variant(template, args=args)
|
|
variant.name = variant.item_code
|
|
validate_item_variant_attributes(variant, args)
|
|
return variant.as_dict()
|
|
|