[IMP] account reports: improved _get_partner_move_lines() used in aged partner balance report to add the unfolding feature.

The method now also sends back the lines used, their right amount and the period they should be in.

addons/account/report/account_aged_partner_balance.py

@@ -61,8 +61,9 @@ class ReportAgedPartnerBalance(models.AbstractModel):
 
         # Build a string like (1,2,3) for easy use in SQL query
         partner_ids = [partner['partner_id'] for partner in partners if partner['partner_id']]
+        lines = dict([(partner['partner_id'], []) for partner in partners if partner['partner_id']])
         if not partner_ids:
-            return [], []
+            return [], [], []
 
         # This dictionary will store the not due amount of all partners
         undue_amounts = {}
@@ -92,6 +93,11 @@ class ReportAgedPartnerBalance(models.AbstractModel):
                 if partial_line.create_date[:10] <= date_from:
                     line_amount -= partial_line.amount
             undue_amounts[partner_id] += line_amount
+            lines[partner_id].append({
+                'line': line,
+                'amount': line_amount,
+                'period': 6,
+                })
 
         # Use one query per period and store results in history (a list variable)
         # Each history will contain: history[1] = {'<partner_id>': <partner_debit-credit>}
@@ -139,6 +145,11 @@ class ReportAgedPartnerBalance(models.AbstractModel):
                         line_amount -= partial_line.amount
 
                 partners_amount[partner_id] += line_amount
+                lines[partner_id].append({
+                    'line': line,
+                    'amount': line_amount,
+                    'period': i,
+                    })
             history.append(partners_amount)
 
         for partner in partners:
@@ -177,7 +188,7 @@ class ReportAgedPartnerBalance(models.AbstractModel):
             if at_least_one_amount:
                 res.append(values)
 
-        return res, total
+        return res, total, lines
 
     @api.multi
     def render_html(self, data):
@@ -195,7 +206,7 @@ class ReportAgedPartnerBalance(models.AbstractModel):
         else:
             account_type = ['payable', 'receivable']
 
-        movelines, total = self._get_partner_move_lines(account_type, date_from, target_move, data['form']['period_length'])
+        movelines, total, dummy = self._get_partner_move_lines(account_type, date_from, target_move, data['form']['period_length'])
         docargs = {
             'doc_ids': self.ids,
             'doc_model': model,