Allow populate of new pricing batch from products w/ "SRP breach"

tailbone/views/batch/pricing.py

@@ -53,6 +53,7 @@ class PricingBatchView(BatchMasterView):
     labels = {
         'min_diff_threshold': "Min $ Diff",
         'min_diff_percent': "Min % Diff",
+        'auto_generate_from_srp_breach': "Automatic (from SRP Breach)",
     }
 
     grid_columns = [
@@ -74,6 +75,7 @@ class PricingBatchView(BatchMasterView):
         'min_diff_threshold',
         'min_diff_percent',
         'calculate_for_manual',
+        'auto_generate_from_srp_breach',
         'notes',
         'created',
         'created_by',
@@ -153,11 +155,36 @@ class PricingBatchView(BatchMasterView):
             f.set_readonly('input_filename')
             f.set_renderer('input_filename', self.render_downloadable_file)
 
+        # auto_generate_from_srp_breach
+        if self.creating:
+            f.set_type('auto_generate_from_srp_breach', 'boolean')
+        else:
+            f.remove_field('auto_generate_from_srp_breach')
+
+        # note, the input file is normally required, but should *not* be if the
+        # user wants to auto-generate the new batch
+        if self.request.method == 'POST':
+            if self.request.POST.get('auto_generate_from_srp_breach') == 'true':
+                f.set_required('input_filename', False)
+
     def get_batch_kwargs(self, batch, mobile=False):
         kwargs = super(PricingBatchView, self).get_batch_kwargs(batch, mobile=mobile)
         kwargs['min_diff_threshold'] = batch.min_diff_threshold
         kwargs['min_diff_percent'] = batch.min_diff_percent
         kwargs['calculate_for_manual'] = batch.calculate_for_manual
+
+        # are we auto-generating from SRP breach?
+        if self.request.POST.get('auto_generate_from_srp_breach') == 'true':
+
+            # assign batch param
+            params = kwargs.get('params', {})
+            params['auto_generate_from_srp_breach'] = True
+            kwargs['params'] = params
+
+            # provide default description
+            if not kwargs.get('description'):
+                kwargs['description'] = "auto-generated from SRP breach"
+
         return kwargs
 
     def configure_row_grid(self, g):