def create_item():
""" Allows logged in users to create an item
Can only be accessed by logged in users """
categories = crud.get_all_categories()
# Only allow item creation on POST request
if request.method == 'POST':
name = request.form['name']
description = request.form['description']
category_id = request.form['category-id']
file = request.files['file']
# Only allow upload of files which have an allowed extension
if file and allowed_file(file.filename):
extension = get_file_extension(file.filename)
logging.debug("The file's extension is: %s" % extension)
# Generate a UUID filename to avoid duplicate filenames
filename = "%s.%s" % (uuid_gen(), extension)
file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
else:
filename = None
crud.create_item(name, description, category_id, filename)
return redirect(url_for('index'), code=302)
return render_template(
'item_create_form.html',
categories=categories)
def create_item():
""" Allows logged in users to create an item
Can only be accessed by logged in users """
categories = crud.get_all_categories()
# Only allow item creation on POST request
if request.method == 'POST':
name = request.form['name']
description = request.form['description']
category_id = request.form['category-id']
file = request.files['file']
# Only allow upload of files which have an allowed extension
if file and allowed_file(file.filename):
extension = get_file_extension(file.filename)
logging.debug("The file's extension is: %s" % extension)
# Generate a UUID filename to avoid duplicate filenames
filename = "%s.%s" % (uuid_gen(), extension)
file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
else:
filename = None
crud.create_item(name, description, category_id, filename)
return redirect(url_for('index'), code=302)
return render_template('item_create_form.html', categories=categories)
def json_endpoint():
""" The endpoint to access the catalogue in JSON format
Be advised that this currently exposes the complete catalogue
which is something you may want to avoid
Big thanks to michael_940140431 on the Udacity forums
for getting me on the right track """
output = []
entries = crud.get_all_categories()
for entry in entries:
items = crud.get_items_by_category(entry.id)
entry = entry.serialise
entry['Item'] = [i.serialise for i in items]
output.append(entry)
return jsonify(Category=output)
def json_endpoint():
""" The endpoint to access the catalogue in JSON format
Be advised that this currently exposes the complete catalogue
which is something you may want to avoid
Big thanks to michael_940140431 on the Udacity forums
for getting me on the right track """
output = []
entries = crud.get_all_categories()
for entry in entries:
items = crud.get_items_by_category(entry.id)
entry = entry.serialise
entry['Item'] = [i.serialise for i in items]
output.append(entry)
return jsonify(Category=output)
def generate_context(item_id=None, category_id=None):
""" Returns a catalogue context with categories and item(s)
item_id: if set retrieves item details
category_id: if set retrieves items of this category
(note: category_id is ignored, if item_id is provided)
If neither category_id nor item_id is provided,
all items in the catalogue will be returned
Always returns all categories """
context = dict()
context['categories'] = crud.get_all_categories()
if item_id is not None:
context['items'] = crud.get_item_by_id(item_id)
elif category_id is not None:
context['items'] = crud.get_items_by_category(category_id)
else:
context['items'] = crud.get_all_items()
return context
def generate_context(item_id=None, category_id=None):
""" Returns a catalogue context with categories and item(s)
item_id: if set retrieves item details
category_id: if set retrieves items of this category
(note: category_id is ignored, if item_id is provided)
If neither category_id nor item_id is provided,
all items in the catalogue will be returned
Always returns all categories """
context = dict()
context['categories'] = crud.get_all_categories()
if item_id is not None:
context['items'] = crud.get_item_by_id(item_id)
elif category_id is not None:
context['items'] = crud.get_items_by_category(category_id)
else:
context['items'] = crud.get_all_items()
return context
def xml_endpoint():
""" The endpoint to access the catalogue in XML format
Be advised that this currently exposes the complete catalogue
which is something you may want to avoid """
def generate_children(parent, children):
""" This function assigns a list of children to a parent element
parent: the name of the parent tag (provide as string)
children: a dictionary of children
(the key becomes the tag name, the value the text)
This function does not deal with attributes,
but only tags and text values """
parent = Element(parent)
children = children.serialise
for key, value in children.items():
child = Element(key)
child.text = str(value)
parent.append(child)
return parent
categories = crud.get_all_categories()
catalogue_elem = Element('catalogue')
for category in categories:
cats_elem = generate_children('category', category)
items_elem = Element('items')
items = crud.get_items_by_category(category.id)
for item in items:
item_elem = generate_children('item', item)
items_elem.append(item_elem)
cats_elem.append(items_elem)
catalogue_elem.append(cats_elem)
return Response(tostring(catalogue_elem), mimetype='application/xml')
def xml_endpoint():
""" The endpoint to access the catalogue in XML format
Be advised that this currently exposes the complete catalogue
which is something you may want to avoid """
def generate_children(parent, children):
""" This function assigns a list of children to a parent element
parent: the name of the parent tag (provide as string)
children: a dictionary of children
(the key becomes the tag name, the value the text)
This function does not deal with attributes,
but only tags and text values """
parent = Element(parent)
children = children.serialise
for key, value in children.items():
child = Element(key)
child.text = str(value)
parent.append(child)
return parent
categories = crud.get_all_categories()
catalogue_elem = Element('catalogue')
for category in categories:
cats_elem = generate_children('category', category)
items_elem = Element('items')
items = crud.get_items_by_category(category.id)
for item in items:
item_elem = generate_children('item', item)
items_elem.append(item_elem)
cats_elem.append(items_elem)
catalogue_elem.append(cats_elem)
return Response(tostring(catalogue_elem), mimetype='application/xml')
