Expose config for identifying supported vendors

unfortunately must identify vendors at each app node separately, but
this is definitely still an improvement..

tailbone/templates/vendors/configure.mako

@@ -16,6 +16,41 @@
     </b-field>
 
   </div>
+
+  <h3 class="block is-size-3">Supported Vendors</h3>
+  <div class="block" style="padding-left: 2rem;">
+
+    <p class="block">
+      The following vendor "keys" are defined within various places in
+      the software.&nbsp; You must identify each explicitly with a
+      Vendor record, for things to work as designed.
+    </p>
+
+    <b-field v-for="setting in supportedVendorSettings"
+             :key="setting.key"
+             horizontal
+             :label="setting.key"
+             :type="supportedVendorSettings[setting.key].value ? null : 'is-warning'"
+             style="max-width: 75%;">
+
+      <tailbone-autocomplete :name="'rattail.vendor.' + setting.key"
+                             service-url="${url('vendors.autocomplete')}"
+                             v-model="supportedVendorSettings[setting.key].value"
+                             :initial-label="setting.label"
+                             @input="settingsNeedSaved = true">
+      </tailbone-autocomplete>
+    </b-field>
+
+  </div>
+</%def>
+
+<%def name="modify_this_page_vars()">
+  ${parent.modify_this_page_vars()}
+  <script type="text/javascript">
+
+    ThisPageData.supportedVendorSettings = ${json.dumps(supported_vendor_settings)|n}
+
+  </script>
 </%def>
 
 

tailbone/views/master.py

@@ -4359,6 +4359,21 @@ class MasterView(View):
 
     def configure_get_context(self, simple_settings=None,
                               input_file_templates=True):
+        """
+        Returns the full context dict, for rendering the configure
+        page template.
+
+        Default context will include the "simple" settings, as well as
+        any "input file template" settings.
+
+        You may need to override this method, to add additional
+        "custom" settings.
+
+        :param simple_settings: Optional list of simple settings, if
+           already initialized.
+
+        :returns: Context dict for the page template.
+        """
         context = {}
         if simple_settings is None:
             simple_settings = self.configure_get_simple_settings()

tailbone/views/vendors/core.py

@@ -33,6 +33,7 @@ from rattail.db import model
 from webhelpers2.html import tags
 
 from tailbone.views import MasterView
+from tailbone.db import Session
 
 
 class VendorView(MasterView):
@@ -179,6 +180,62 @@ class VendorView(MasterView):
              'type': bool},
         ]
 
+    def configure_get_context(self, **kwargs):
+        context = super(VendorView, self).configure_get_context(**kwargs)
+
+        context['supported_vendor_settings'] = self.configure_get_supported_vendor_settings()
+
+        return context
+
+    def configure_gather_settings(self, data, **kwargs):
+        settings = super(VendorView, self).configure_gather_settings(
+            data, **kwargs)
+
+        supported_vendor_settings = self.configure_get_supported_vendor_settings()
+        for setting in six.itervalues(supported_vendor_settings):
+            name = 'rattail.vendor.{}'.format(setting['key'])
+            settings.append({'name': name,
+                             'value': data[name]})
+
+        return settings
+
+    def configure_remove_settings(self, **kwargs):
+        super(VendorView, self).configure_remove_settings(**kwargs)
+
+        model = self.model
+        names = []
+
+        supported_vendor_settings = self.configure_get_supported_vendor_settings()
+        for setting in six.itervalues(supported_vendor_settings):
+            names.append('rattail.vendor.{}'.format(setting['key']))
+
+        if names:
+            # nb. we do not use self.Session b/c that may not point to
+            # the Rattail DB for the subclass
+            Session().query(model.Setting)\
+                     .filter(model.Setting.name.in_(names))\
+                     .delete(synchronize_session=False)
+
+    def configure_get_supported_vendor_settings(self):
+        app = self.get_rattail_app()
+        vendor_handler = app.get_vendor_handler()
+        batch_handler = app.get_batch_handler('purchase')
+        settings = {}
+
+        for parser in batch_handler.get_supported_invoice_parsers():
+            key = parser.vendor_key
+            if not key:
+                continue
+
+            vendor = vendor_handler.get_vendor(self.Session(), key)
+            settings[key] = {
+                'key': key,
+                'value': vendor.uuid if vendor else None,
+                'label': six.text_type(vendor) if vendor else None,
+            }
+
+        return settings
+
 
 def defaults(config, **kwargs):
     base = globals()