Add jump buttons to view product, vendor in CORE Office

hopefully can use the same pattern for anything else that comes up

tailbone_corepos/templates/corepos-util.mako

@@ -0,0 +1,18 @@
+## -*- coding: utf-8; -*-
+
+<%def name="render_xref_helper()">
+  <div class="object-helper">
+    <h3>Cross-Reference</h3>
+    <div class="object-helper-content">
+      <b-button type="is-primary"
+                % if core_office_url:
+                tag="a" href="${core_office_url}" target="_blank"
+                % else:
+                disabled title="${core_office_why_no_url}"
+                % endif
+                >
+        View in CORE Office
+      </b-button>
+    </div>
+  </div>
+</%def>

tailbone_corepos/templates/products/view.mako

@@ -0,0 +1,11 @@
+## -*- coding: utf-8; -*-
+<%inherit file="tailbone:templates/products/view.mako" />
+<%namespace file="/corepos-util.mako" import="render_xref_helper" />
+
+<%def name="object_helpers()">
+  ${parent.object_helpers()}
+  ${render_xref_helper()}
+</%def>
+
+
+${parent.body()}

tailbone_corepos/templates/vendors/view.mako

@@ -0,0 +1,11 @@
+## -*- coding: utf-8; -*-
+<%inherit file="/master/view.mako" />
+<%namespace file="/corepos-util.mako" import="render_xref_helper" />
+
+<%def name="object_helpers()">
+  ${parent.object_helpers()}
+  ${render_xref_helper()}
+</%def>
+
+
+${parent.body()}

tailbone_corepos/views/products.py

@@ -0,0 +1,56 @@
+# -*- coding: utf-8; -*-
+################################################################################
+#
+#  Rattail -- Retail Software Framework
+#  Copyright © 2010-2020 Lance Edgar
+#
+#  This file is part of Rattail.
+#
+#  Rattail is free software: you can redistribute it and/or modify it under the
+#  terms of the GNU General Public License as published by the Free Software
+#  Foundation, either version 3 of the License, or (at your option) any later
+#  version.
+#
+#  Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+#  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+#  details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  Rattail.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+"""
+Product Views
+"""
+
+from rattail_corepos.config import core_office_url
+
+from tailbone.views import products as base
+
+
+class ProductView(base.ProductsView):
+    """
+    Master view for the Product class.
+    """
+
+    def template_kwargs_view(self, **kwargs):
+        """
+        Supplements the default logic as follows:
+
+        Adds the URL for viewing the product within CORE Office, or else the
+        reason for lack of such a URL.
+        """
+        kwargs = super(ProductView, self).template_kwargs_view(**kwargs)
+        product = kwargs['instance']
+
+        # CORE Office URL
+        kwargs['core_office_url'] = None
+        office_url = core_office_url(self.rattail_config)
+        if not office_url:
+            kwargs['core_office_why_no_url'] = "CORE Office URL is not configured"
+        else:
+            kwargs['core_office_url'] = '{}/item/ItemEditorPage.php?searchupc={}'.format(
+                office_url, product.item_id)
+
+        return kwargs

tailbone_corepos/views/vendors.py

@@ -1,8 +1,30 @@
 # -*- coding: utf-8; -*-
+################################################################################
+#
+#  Rattail -- Retail Software Framework
+#  Copyright © 2010-2019 Lance Edgar
+#
+#  This file is part of Rattail.
+#
+#  Rattail is free software: you can redistribute it and/or modify it under the
+#  terms of the GNU General Public License as published by the Free Software
+#  Foundation, either version 3 of the License, or (at your option) any later
+#  version.
+#
+#  Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+#  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+#  details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  Rattail.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
 """
 Vendor views
 """
 
+from rattail_corepos.config import core_office_url
 from rattail_corepos.corepos.util import get_max_existing_vendor_id
 
 from tailbone.views import vendors as base
@@ -56,3 +78,30 @@ class VendorView(base.VendorsView):
                 vendor.special_discount = 0
 
         return vendor
+
+    def template_kwargs_view(self, **kwargs):
+        """
+        Supplements the default logic as follows:
+
+        Adds the URL for viewing the vendor within CORE Office, or else the
+        reason for lack of such a URL.
+        """
+        # invoke default/parent logic, if it exists
+        parent = super(VendorView, self)
+        if hasattr(parent, 'template_kwargs_view'):
+            kwargs = parent.template_kwargs_view(**kwargs)
+
+        vendor = kwargs['instance']
+
+        # CORE Office URL
+        kwargs['core_office_url'] = None
+        office_url = core_office_url(self.rattail_config)
+        if not office_url:
+            kwargs['core_office_why_no_url'] = "CORE Office URL is not configured"
+        elif not vendor.corepos_id:
+            kwargs['core_office_why_no_url'] = "Vendor has no CORE-POS ID"
+        else:
+            kwargs['core_office_url'] = '{}/item/vendors/VendorIndexPage.php?vid={}'.format(
+                office_url, vendor.corepos_id)
+
+        return kwargs