From 91d938289a115e8c0df21294e0baf53b3c5d8004 Mon Sep 17 00:00:00 2001
From: Dmitriy Shesterkin <mitri4@bk.ru>
Date: Sun, 21 May 2017 21:06:58 +0300
Subject: [PATCH] fix calc summ

---
 src/dokumentor/static/js/formset-events.js | 46 ++++++++++++++--------
 1 file changed, 30 insertions(+), 16 deletions(-)

diff --git a/src/dokumentor/static/js/formset-events.js b/src/dokumentor/static/js/formset-events.js
index 5ba3d24..556da47 100644
--- a/src/dokumentor/static/js/formset-events.js
+++ b/src/dokumentor/static/js/formset-events.js
@@ -1,32 +1,51 @@
 $(function() {
+
     var fix_float_input = function (e) {
         var el = $(this);
         var new_val = fix_float_string(el.val());
         if (new_val != el.val())
             el.val(new_val);
-    }
+    };
+
     var calc_summa = function (e) {
+        console.log('calc_summa');
+
         var el = $(this);
         var qty = parseFloat(el.closest('tr.row').find('td.qty input').val());
         var price = parseFloat(el.closest('tr.row').find('td.price input').val());
-        var total_price = qty * price;
-        if (total_price)
-            el.closest('tr.row').find('td.total_price input').val(total_price.toFixed(2));
-    }
+        var total_price;
+
+        total_price = (qty && price) ? qty * price : 0;
+
+        if (total_price) {
+          el.closest('tr.row').find('td.total_price input').val(total_price.toFixed(2));
+        } else {
+          el.closest('tr.row').find('td.total_price input').val('');
+        }
+
+    };
+
     var calc_itogo_nds = function() {
         $('#itogo_nds_text').html('НДС ' + $('#id_nds_value option:selected').text());
         var nds = parseFloat($('#id_nds_value').val()) * parseFloat($('#itogo').html()) / 100;
         $('#itogo_nds').html(nds.toFixed(2));
-    }
+    };
+
     window.calc_itogo = function (e) {
         var itogo_sum = 0;
         $('#tbl_items').find('.total_price input:visible').each(function() {
             var itogo_sum_row = $(this).val() ? parseFloat($(this).val()) : 0;
             itogo_sum += itogo_sum_row;
-        })
-        $('#itogo').html(itogo_sum.toFixed(2));
+        });
+        if (itogo_sum) {
+          $('#itogo').html(itogo_sum.toFixed(2));
+        } else {
+          $('#itogo').html('');
+        }
+
         calc_itogo_nds();
-    }
+    };
+
     window.set_events = function set_events() {
         $("#tbl_items tr.row td.qty input").on('keyup', fix_float_input);
         $("#tbl_items tr.row td.price input").on('keyup', fix_float_input);
@@ -45,18 +64,13 @@ $(function() {
         $("#tbl_items tr.row td.price input").blur(window.calc_itogo);
         $("#tbl_items tr.row td.total_price input").blur(window.calc_itogo);
 
-        //$('input[name=nds_type]').change(calc_itogo_nds);
         $('#id_nds_value').change(calc_itogo_nds);
 
-//
-        //$("#tbl_items tr.row td.qty input").blur(calc_itogo_nds);
-        //$("#tbl_items tr.row td.price input").blur(calc_itogo_nds);
-        //$("#tbl_items tr.row td.total_price input").blur(calc_itogo_nds);
-    }
+    };
     window.set_events();
     window.calc_itogo();
     calc_itogo_nds();
-})
+});
 
 
 function fix_float_string(val) {