524 lines
20 KiB
Python
524 lines
20 KiB
Python
# -*- coding: utf-8 -*-
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################################################################################
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#
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# Rattail -- Retail Software Framework
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# Copyright © 2010-2016 Lance Edgar
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#
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# This file is part of Rattail.
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#
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# Rattail is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, either version 3 of the License, or (at your option)
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# any later version.
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#
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# Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
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# more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with Rattail. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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"""
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Product Views
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"""
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from __future__ import unicode_literals, absolute_import
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import os
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import re
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import sqlalchemy as sa
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from sqlalchemy import orm
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from rattail import enum, pod, sil, batches
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from rattail.db import model, api, auth, Session as RattailSession
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from rattail.gpc import GPC
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from rattail.threads import Thread
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from rattail.exceptions import LabelPrintingError
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import formalchemy as fa
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from pyramid import httpexceptions
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from pyramid.renderers import render_to_response
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from webhelpers.html import tags
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from tailbone import forms, newgrids as grids
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from tailbone.db import Session
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from tailbone.views import MasterView, SearchableAlchemyGridView, AutocompleteView
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from tailbone.views.continuum import VersionView, version_defaults
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from tailbone.forms.renderers import products as products_forms
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from tailbone.progress import SessionProgress
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# TODO: For a moment I thought this was going to be necessary, but now I think
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# not. Leaving it around for a bit just in case...
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# class VendorAnyFilter(grids.filters.AlchemyStringFilter):
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# """
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# Custom filter for "vendor (any)" so we can avoid joining on that unless we
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# really have to. This is because it seems to throw off the number of
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# records which are showed in the result set, when this filter is included in
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# the active set but no criteria is specified.
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# """
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# def filter(self, query, **kwargs):
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# original = query
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# query = super(VendorAnyFilter, self).filter(query, **kwargs)
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# if query is not original:
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# query = self.joiner(query)
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# return query
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class DescriptionFieldRenderer(fa.TextFieldRenderer):
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"""
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Renderer for product descriptions within the grid; adds hyperlink.
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"""
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def render_readonly(self, **kwargs):
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description = self.raw_value
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if description is None:
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return ''
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if kwargs.get('link'):
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product = self.field.parent.model
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description = tags.link_to(description, kwargs['link'](product))
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return description
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class ProductsView(MasterView):
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"""
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Master view for the Product class.
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"""
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model_class = model.Product
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# child_version_classes = [
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# (model.ProductCode, 'product_uuid'),
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# (model.ProductCost, 'product_uuid'),
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# (model.ProductPrice, 'product_uuid'),
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# ]
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# These aliases enable the grid queries to filter products which may be
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# purchased from *any* vendor, and yet sort by only the "preferred" vendor
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# (since that's what shows up in the grid column).
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ProductCostAny = orm.aliased(model.ProductCost)
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VendorAny = orm.aliased(model.Vendor)
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def __init__(self, request):
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self.request = request
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self.print_labels = request.rattail_config.getbool('tailbone', 'products.print_labels', default=False)
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def query(self, session):
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user = self.request.user
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if user and user not in session:
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user = session.merge(user)
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query = session.query(model.Product)
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if not auth.has_permission(session, user, 'products.view_deleted'):
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query = query.filter(model.Product.deleted == False)
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# TODO: This used to be a good idea I thought...but in dev it didn't
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# seem to make much difference, except with a larger (50K) data set it
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# totally bogged things down instead of helping...
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# query = query\
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# .options(orm.joinedload(model.Product.brand))\
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# .options(orm.joinedload(model.Product.department))\
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# .options(orm.joinedload(model.Product.subdepartment))\
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# .options(orm.joinedload(model.Product.regular_price))\
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# .options(orm.joinedload(model.Product.current_price))\
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# .options(orm.joinedload(model.Product.vendor))
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return query
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def configure_grid(self, g):
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def join_vendor(q):
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return q.outerjoin(model.ProductCost,
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sa.and_(
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model.ProductCost.product_uuid == model.Product.uuid,
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model.ProductCost.preference == 1))\
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.outerjoin(model.Vendor)
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def join_vendor_any(q):
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return q.outerjoin(self.ProductCostAny,
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self.ProductCostAny.product_uuid == model.Product.uuid)\
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.outerjoin(self.VendorAny,
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self.VendorAny.uuid == self.ProductCostAny.vendor_uuid)
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g.joiners['brand'] = lambda q: q.outerjoin(model.Brand)
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g.joiners['family'] = lambda q: q.outerjoin(model.Family)
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g.joiners['department'] = lambda q: q.outerjoin(model.Department,
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model.Department.uuid == model.Product.department_uuid)
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g.joiners['subdepartment'] = lambda q: q.outerjoin(model.Subdepartment,
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model.Subdepartment.uuid == model.Product.subdepartment_uuid)
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g.joiners['report_code'] = lambda q: q.outerjoin(model.ReportCode)
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g.joiners['regular_price'] = lambda q: q.outerjoin(model.ProductPrice,
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model.ProductPrice.uuid == model.Product.regular_price_uuid)
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g.joiners['current_price'] = lambda q: q.outerjoin(model.ProductPrice,
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model.ProductPrice.uuid == model.Product.current_price_uuid)
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g.joiners['code'] = lambda q: q.outerjoin(model.ProductCode)
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g.joiners['vendor'] = join_vendor
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g.joiners['vendor_any'] = join_vendor_any
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g.sorters['brand'] = g.make_sorter(model.Brand.name)
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g.sorters['department'] = g.make_sorter(model.Department.name)
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g.sorters['subdepartment'] = g.make_sorter(model.Subdepartment.name)
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g.sorters['vendor'] = g.make_sorter(model.Vendor.name)
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g.filters['upc'].default_active = True
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g.filters['upc'].default_verb = 'equal'
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g.filters['upc'].label = "UPC"
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g.filters['description'].default_active = True
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g.filters['description'].default_verb = 'contains'
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g.filters['brand'] = g.make_filter('brand', model.Brand.name,
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default_active=True, default_verb='contains')
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g.filters['family'] = g.make_filter('family', model.Family.name)
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g.filters['department'] = g.make_filter('department', model.Department.name,
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default_active=True, default_verb='contains')
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g.filters['subdepartment'] = g.make_filter('subdepartment', model.Subdepartment.name)
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g.filters['report_code'] = g.make_filter('report_code', model.ReportCode.name)
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g.filters['code'] = g.make_filter('code', model.ProductCode.code)
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g.filters['vendor'] = g.make_filter('vendor', model.Vendor.name, label="Vendor (preferred)")
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g.filters['vendor_any'] = g.make_filter('vendor_any', self.VendorAny.name, label="Vendor (any)")
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# factory=VendorAnyFilter, joiner=join_vendor_any)
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g.default_sortkey = 'upc'
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product_link = lambda p: self.get_action_url('view', p)
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g.upc.set(renderer=forms.renderers.GPCFieldRenderer)
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g.upc.attrs(link=product_link)
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g.description.set(renderer=DescriptionFieldRenderer)
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g.description.attrs(link=product_link)
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g.regular_price.set(renderer=forms.renderers.PriceFieldRenderer)
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g.current_price.set(renderer=forms.renderers.PriceFieldRenderer)
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g.configure(
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include=[
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g.upc.label("UPC"),
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g.brand,
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g.description,
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g.size,
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g.subdepartment,
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g.vendor.label("Pref. Vendor"),
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g.regular_price.label("Reg. Price"),
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g.current_price.label("Cur. Price"),
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],
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readonly=True)
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# TODO: need to check for 'print labels' permission here also
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if self.print_labels:
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g.more_actions.append(grids.GridAction('print_label', icon='print'))
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def template_kwargs_index(self, **kwargs):
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if self.print_labels:
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kwargs['label_profiles'] = Session.query(model.LabelProfile)\
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.filter(model.LabelProfile.visible == True)\
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.order_by(model.LabelProfile.ordinal)\
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.all()
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return kwargs
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def row_attrs(self, row, i):
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attrs = {'uuid': row.uuid}
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classes = []
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if row.not_for_sale:
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classes.append('not-for-sale')
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if row.deleted:
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classes.append('deleted')
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if classes:
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attrs['class_'] = ' '.join(classes)
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return attrs
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def get_instance(self):
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key = self.request.matchdict['uuid']
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product = Session.query(model.Product).get(key)
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if product:
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return product
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price = Session.query(model.ProductPrice).get(key)
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if price:
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return price.product
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raise httpexceptions.HTTPNotFound()
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def configure_fieldset(self, fs):
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fs.upc.set(renderer=forms.renderers.GPCFieldRenderer)
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fs.brand.set(options=[])
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fs.unit_of_measure.set(renderer=forms.renderers.EnumFieldRenderer(enum.UNIT_OF_MEASURE))
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fs.regular_price.set(renderer=forms.renderers.PriceFieldRenderer)
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fs.current_price.set(renderer=forms.renderers.PriceFieldRenderer)
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fs.append(fa.Field('current_price_ends', type=fa.types.DateTime,
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value=lambda p: p.current_price.ends if p.current_price else None))
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fs.configure(
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include=[
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fs.upc.label("UPC"),
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fs.brand.with_renderer(forms.renderers.BrandFieldRenderer),
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fs.description,
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fs.unit_size,
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fs.unit_of_measure.label("Unit of Measure"),
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fs.size,
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fs.weighed,
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fs.case_pack,
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fs.department.with_renderer(products_forms.DepartmentFieldRenderer),
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fs.subdepartment.with_renderer(products_forms.SubdepartmentFieldRenderer),
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fs.category.with_renderer(products_forms.CategoryFieldRenderer),
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fs.family,
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fs.report_code,
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fs.regular_price,
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fs.current_price,
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fs.current_price_ends,
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fs.deposit_link,
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fs.tax,
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fs.organic,
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fs.discountable,
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fs.special_order,
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fs.not_for_sale,
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fs.deleted,
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fs.last_sold,
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])
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if not self.viewing:
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del fs.regular_price
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del fs.current_price
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if not self.request.has_perm('products.view_deleted'):
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del fs.deleted
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def template_kwargs_view(self, **kwargs):
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kwargs['image'] = False
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product = kwargs['instance']
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if product.upc:
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kwargs['image_url'] = pod.get_image_url(self.rattail_config, product.upc)
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kwargs['image_path'] = pod.get_image_path(self.rattail_config, product.upc)
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if os.path.exists(kwargs['image_path']):
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kwargs['image'] = True
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return kwargs
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def edit(self):
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# TODO: Should add some more/better hooks, so don't have to duplicate
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# so much code here.
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self.editing = True
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instance = self.get_instance()
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form = self.make_form(instance)
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product_deleted = instance.deleted
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if self.request.method == 'POST':
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if form.validate():
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self.save_form(form)
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self.after_edit(instance)
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self.request.session.flash("{} {} has been updated.".format(
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self.get_model_title(), self.get_instance_title(instance)))
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return self.redirect(self.get_action_url('view', instance))
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if product_deleted:
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self.request.session.flash("This product is marked as deleted.", 'error')
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return self.render_to_response('edit', {'instance': instance,
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'instance_title': self.get_instance_title(instance),
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'form': form})
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def make_batch(self):
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if self.request.method == 'POST':
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provider = self.request.POST.get('provider')
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if provider:
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provider = batches.get_provider(self.rattail_config, provider)
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if provider:
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if self.request.POST.get('params') == 'True':
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provider.set_params(Session(), **self.request.POST)
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else:
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try:
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url = self.request.route_url('batch_params.{}'.format(provider.name))
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except KeyError:
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pass
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else:
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self.request.session['referer'] = self.request.current_route_url()
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return httpexceptions.HTTPFound(location=url)
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progress = SessionProgress(self.request, 'products.batch')
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thread = Thread(target=self.make_batch_thread, args=(provider, progress))
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thread.start()
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kwargs = {
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'key': 'products.batch',
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'cancel_url': self.request.route_url('products'),
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'cancel_msg': "Batch creation was canceled.",
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}
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return self.render_progress(kwargs)
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enabled = self.rattail_config.get('rattail.pyramid', 'batches.providers')
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if enabled:
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enabled = enabled.split()
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providers = []
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for provider in batches.iter_providers():
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if not enabled or provider.name in enabled:
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providers.append((provider.name, provider.description))
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return {'providers': providers}
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def make_batch_thread(self, provider, progress):
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"""
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Threat target for making a batch from current products query.
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"""
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session = RattailSession()
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products = self.get_effective_query(session)
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batch = provider.make_batch(session, products, progress)
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if not batch:
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session.rollback()
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session.close()
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return
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session.commit()
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session.refresh(batch)
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session.close()
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progress.session.load()
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progress.session['complete'] = True
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progress.session['success_url'] = self.request.route_url('batch.read', uuid=batch.uuid)
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progress.session['success_msg'] = 'Batch "{}" has been created.'.format(batch.description)
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progress.session.save()
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@classmethod
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def defaults(cls, config):
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# print labels
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config.add_tailbone_permission('products', 'products.print_labels',
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"Print labels for products")
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# view deleted products
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config.add_tailbone_permission('products', 'products.view_deleted',
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"View products marked as deleted")
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# make batch from product query
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config.add_route('products.create_batch', '/products/batch')
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config.add_view(cls, attr='make_batch', route_name='products.create_batch',
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renderer='/products/batch.mako', permission='batches.create')
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cls._defaults(config)
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class ProductVersionView(VersionView):
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"""
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View which shows version history for a product.
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"""
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parent_class = model.Product
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route_model_view = 'product.read'
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child_classes = [
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(model.ProductCode, 'product_uuid'),
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(model.ProductCost, 'product_uuid'),
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(model.ProductPrice, 'product_uuid'),
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]
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def warn_if_deleted(self):
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"""
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Maybe set flash warning if product is marked deleted.
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"""
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uuid = self.request.matchdict['uuid']
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product = Session.query(model.Product).get(uuid)
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assert product, "No product found for UUID: {}".format(repr(uuid))
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if product.deleted:
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self.request.session.flash("This product is marked as deleted.", 'error')
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def list(self):
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self.warn_if_deleted()
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return super(ProductVersionView, self).list()
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def details(self):
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self.warn_if_deleted()
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return super(ProductVersionView, self).details()
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class ProductsAutocomplete(AutocompleteView):
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"""
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Autocomplete view for products.
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"""
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mapped_class = model.Product
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fieldname = 'description'
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def query(self, term):
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q = Session.query(model.Product).outerjoin(model.Brand)
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q = q.filter(sa.or_(
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model.Brand.name.ilike('%{}%'.format(term)),
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model.Product.description.ilike('%{}%'.format(term))))
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if not self.request.has_perm('products.view_deleted'):
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q = q.filter(model.Product.deleted == False)
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q = q.order_by(model.Brand.name, model.Product.description)
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q = q.options(orm.joinedload(model.Product.brand))
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return q
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def display(self, product):
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return product.full_description
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def products_search(request):
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"""
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Locate a product(s) by UPC.
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Eventually this should be more generic, or at least offer more fields for
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search. For now it operates only on the ``Product.upc`` field.
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"""
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product = None
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upc = request.GET.get('upc', '').strip()
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upc = re.sub(r'\D', '', upc)
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if upc:
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product = api.get_product_by_upc(Session(), upc)
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if not product:
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# Try again, assuming caller did not include check digit.
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upc = GPC(upc, calc_check_digit='upc')
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product = api.get_product_by_upc(Session(), upc)
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if product:
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if product.deleted and not request.has_perm('products.view_deleted'):
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product = None
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else:
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product = {
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'uuid': product.uuid,
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'upc': unicode(product.upc or ''),
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'full_description': product.full_description,
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}
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return {'product': product}
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def print_labels(request):
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profile = request.params.get('profile')
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profile = Session.query(model.LabelProfile).get(profile) if profile else None
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if not profile:
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return {'error': "Label profile not found"}
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product = request.params.get('product')
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product = Session.query(model.Product).get(product) if product else None
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if not product:
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return {'error': "Product not found"}
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quantity = request.params.get('quantity')
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if not quantity.isdigit():
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return {'error': "Quantity must be numeric"}
|
|
quantity = int(quantity)
|
|
|
|
printer = profile.get_printer(request.rattail_config)
|
|
if not printer:
|
|
return {'error': "Couldn't get printer from label profile"}
|
|
|
|
try:
|
|
printer.print_labels([(product, quantity)])
|
|
except Exception, error:
|
|
return {'error': str(error)}
|
|
return {}
|
|
|
|
|
|
def includeme(config):
|
|
|
|
config.add_route('products.autocomplete', '/products/autocomplete')
|
|
config.add_view(ProductsAutocomplete, route_name='products.autocomplete',
|
|
renderer='json', permission='products.list')
|
|
|
|
config.add_route('products.print_labels', '/products/labels')
|
|
config.add_view(print_labels, route_name='products.print_labels',
|
|
renderer='json', permission='products.print_labels')
|
|
|
|
config.add_route('products.search', '/products/search')
|
|
config.add_view(products_search, route_name='products.search',
|
|
renderer='json', permission='products.list')
|
|
|
|
ProductsView.defaults(config)
|
|
version_defaults(config, ProductVersionView, 'product')
|