def edit_collection(collectionID):
if request.method == 'GET':
collection = Collection.get_collection(collectionID)
return render_template('edit_collection.html', collection=collection)
elif request.method == 'POST':
collection = request.form['collection']
authorID = int(request.form['authorID'])
introduction = request.form['introduction']
Collection.edit_collection(collection, authorID, introduction, collectionID)
return redirect(url_for('single_collection', collectionID=collectionID))
