better handling of updating units and quantities

items.py

@@ -30,13 +30,7 @@ def item_update(itemid, itemchecked):
     db.session.commit()
     return '', 204
 
-# user adds items to list
+def interpret_and_add_item(listid, newlabel):
-@items_bp.route("/items_append/<listid>", methods=["GET", "POST"])
-@login_required
-def items_append(listid):
-    if request.method == "POST":
-        # a new item has been added
-        newlabel = request.form["newItem"]
     # could be 
     #   appeltjes
     #   appel goudr
@@ -90,16 +84,43 @@ def items_append(listid):
                     newlabel = ' '.join(words[2:])
     if unit == '':
         unit = 'x'
+    if quantity == '':
+        quantity = 1
 
     newlabel=newlabel.title()
-        newitem=Item(listofitems_id=listid, label=newlabel)
+    # check if the item exists already
+    item = Item.query.filter_by(listofitems_id=listid, label=newlabel, unit=unit).first()
+    if item:
+        print(item.unit)
+        print(unit)
+        if item.is_checked:
+            item.quantity += int(quantity)
+        if item.is_suggestion:
+            item.quantity = quantity
+        item.is_suggestion = False
+        item.is_checked = False
+    else:
+        # create a new one
+        item=Item(listofitems_id=listid, label=newlabel)
         if unit:
-            newitem.unit = unit
+            item.unit = unit
         if quantity:
-            newitem.quantity = int(quantity)    
+            item.quantity = int(quantity)    
-        db.session.add(newitem)
+    db.session.add(item)
     db.session.commit()
 
+    return item
+
+
+# user adds items to list
+@items_bp.route("/items_append/<listid>", methods=["GET", "POST"])
+@login_required
+def items_append(listid):
+    if request.method == "POST":
+        # a new item has been added
+        newlabel = request.form["newItem"]
+        interpret_and_add_item(listid, newlabel)
+
     # read icons
     icon_names = []
     icon_list = os.listdir(ICONPATH)

templates/items_append.html

@@ -62,7 +62,7 @@ $(document).ready(function(){
         <a class="btn btn-{% if item.is_suggestion %}primary{% else %}info{% endif %} btn-sm"  name="{{ item.id }}" onclick='handleAddOne(this);'>&nbsp;+&nbsp;</a>
         {{ item.label }}</td>
       <td style="text-align: right">
-        {% if item.quantity %}
+        {% if item.quantity > 1 or item.unit != 'x' %}
         <a class="btn btn-outline-primary btn-sm"  name="{{ item.id }}" onclick='handleAddWithQuantity(this, {{ item.quantity }} );'>{{ item.quantity }}{{ item.unit }}</a>
         &nbsp;&nbsp;&nbsp;
         {% endif %}

templates/items_show.html

@@ -49,7 +49,7 @@
     {{ item.label }}
     </div>
     <div>
-    {% if item.quantity > 1 %}
+    {% if item.quantity > 1 or item.unit != 'x' %}
       {{ item.quantity }}{{ item.unit }}
     {% endif %}
     <img src="/static/categories/{{ item.category }}.svg" style="height: 2em;" alt="...">