def home(cid = None, item_id = None):
#Check input: Category ID
if cid == None:
category_id = Category.get_root().id
else:
category_id = cid
#Get one that is specified
categories = [] + [Category.get_by_id(category_id)]
#Get children
if len(categories) == 1:
children = Category.get_children(category_id, count_items = True)
if len(children) == 0: #If no children, then get parent of it
parent_id = categories[0].parent
categories = [] + [Category.get_by_id(parent_id)]
#get children of the parent
children = Category.get_children(parent_id, count_items = True)
if len(children) > 0:
categories += children
categories[0].parent_flag = True
#Assign selected_flag
for c in categories:
if c.id == int(category_id):
c.selected_flag = True
else:
c.selected_flag = False
#Get item or items
item = None
items = []
if item_id == None:
items = Item.get_by_category(category_id)
else:
item = Item.get_by_id(item_id)
if isinstance(item, Item) and item.category_id != category_id:
item = None
return render_template('home.html', title = 'Catalog Excercise',\
categories = categories,\
items = items,\
item = item
)
