def library_list(request):
if request.method == 'GET':
with sqlite3.connect(Connection.db_path) as conn:
conn.row_factory = sqlite3.Row
db_cursor = conn.cursor()
db_cursor.execute("""
select
li.id,
li.title,
li.address
from libraryapp_library li
""")
all_libraries = []
dataset = db_cursor.fetchall()
for row in dataset:
library = Library()
library.id = row['id']
library.title = row['title']
library.address = row['address']
all_libraries.append(library)
template = 'libraries/list.html'
context = {'all_libraries': all_libraries}
return render(request, template, context)
def book_details(request, book_id):
if request.method == 'GET':
book = get_book(book_id)
template_name = 'books/detail.html'
return render(request, template_name, {'book': book})
elif request.method == 'POST':
form_data = request.POST
# Check if this POST is for editing a book
if ("actual_method" in form_data
and form_data["actual_method"] == "PUT"):
book = Book.objects.get(pk=book_id)
book.title = form_data['title']
book.author = form_data['author']
book.ISBN_num = form_data['ISBN_num']
book.year_published = form_data['year_published']
library = Library()
library.id = form_data['location']
book.location = library
book.save()
return redirect(reverse('libraryapp:books'))
# Check if this POST is for deleting a book
if ("actual_method" in form_data
and form_data["actual_method"] == "DELETE"):
book = Book.objects.get(pk=book_id)
book.delete()
return redirect(reverse('libraryapp:books'))
def library_list(request):
with sqlite3.connect(Connection.db_path) as conn:
conn.row_factory = sqlite3.Row
db_cursor = conn.cursor()
db_cursor.execute("""
select
l.libraryId,
l.library_name,
l.library_address,
from libraryapp_library l
""")
all_libraries = []
dataset = db_cursor.fetchall()
for row in dataset:
library = Library()
library.id = row["id"]
library.name = row["name"]
library.address = row["address"]
all_libraries.append(lib)
template_name = 'library/list.html'
context = {'all_libraries': all_libraries}
return render(request, template_name, context)
def library_list(request):
with sqlite3.connect(Connection.db_path) as conn:
conn.row_factory = sqlite3.Row
db_cursor = conn.cursor()
db_cursor.execute("""
SELECT
l.id,
l.title,
l.address
FROM libraryapp_library l;
""")
all_libraries = []
dataset = db_cursor.fetchall()
for row in dataset:
lib = Library()
lib.id = row["id"]
lib.title = row["title"]
lib.address = row["address"]
all_libraries.append(lib)
template_name = 'libraries/list.html'
context = {'all_libraries': all_libraries}
return render(request, template_name, context)
def book_list(request):
if request.method == 'GET':
all_books = Book.objects.all()
template = 'books/list.html'
context = {'all_books': all_books}
return render(request, template, context)
elif request.method == 'POST':
form_data = request.POST
new_book = Book()
new_book.title = form_data['title']
new_book.author = form_data['author']
new_book.ISBN_num = form_data['ISBN_num']
new_book.year_published = form_data['year_published']
librarian = Librarian()
librarian.id = request.user.librarian.id
new_book.librarian = librarian
library = Library()
library.id = form_data['location']
new_book.location = library
new_book.save()
return redirect(reverse('libraryapp:books'))
def library_list(request):
if request.method == 'GET':
with sqlite3.connect(Connection.db_path) as conn:
conn.row_factory = sqlite3.Row
db_cursor = conn.cursor()
db_cursor.execute("""
select
l.id,
l.title,
l.address
from libraryapp_library l
""")
all_libraries = []
dataset = db_cursor.fetchall()
for row in dataset:
lib = Library()
lib.id = row["id"]
lib.title = row["title"]
lib.address = row["address"]
all_libraries.append(lib)
template_name = 'libraries/list.html'
context = {
'all_libraries': all_libraries
}
return render(request, template_name, context)
elif request.method == 'POST':
form_data = request.POST
with sqlite3.connect(Connection.db_path) as conn:
db_cursor = conn.cursor()
db_cursor.execute("""
INSERT INTO libraryapp_library
(
title,
address
)
VALUES (?, ?)
""",
(form_data['title'], form_data['address']))
return redirect(reverse('libraryapp:libraries'))
def create_librarian(cursor, row):
_row = sqlite3.Row(cursor, row)
librarian = Librarian()
librarian.id = _row["librarian_id"]
librarian.first_name = _row["first_name"]
librarian.last_name = _row["last_name"]
librarian.location = _row["location_id"]
librarian.username = _row["username"]
library = Library()
library.id = _row["library_id"]
library.title = _row["library_name"]
library.address = _row["library_address"]
librarian.library = library
return librarian
def create_library(cursor, row):
_row = sqlite3.Row(cursor, row)
library = Library()
library.id = _row["id"]
library.title = _row["title"]
library.address = _row["address"]
# Note: You are adding a blank books list to the library object
# This list will be populated later (see below)
library.books = []
book = Book()
book.id = _row["book_id"]
book.title = _row["book_title"]
book.author = _row["author"]
book.isbn = _row["isbn"]
book.year_published = _row["year_published"]
# Return a tuple containing the library and the
# book built from the data in the current row of
# the data set
return (
library,
book,
)
def get_libraries():
with sqlite3.connect(Connection.db_path) as conn:
conn.row_factory = sqlite3.Row
db_cursor = conn.cursor()
db_cursor.execute("""
SELECT id, title, address
FROM libraryapp_library
""")
all_libraries = []
dataset = db_cursor.fetchall()
for row in dataset:
library = Library()
library.id = row['id']
library.title = row['title']
library.address = row['address']
all_libraries.append(library)
return all_libraries
def create_book(cursor, row):
_row = sqlite3.Row(cursor, row)
book = Book()
book.id = _row["book_id"]
book.Author = _row["Author"]
book.ISBNNumber = _row["ISBNNumber"]
book.bookTitle = _row["bookTitle"]
book.YearPublished = _row["YearPublished"]
librarian = Librarian()
librarian.id = _row["librarian_id"]
librarian.first_name = _row["first_name"]
librarian.last_name = _row["last_name"]
library = Library()
library.id = _row["library_id"]
library.title = _row["library_name"]
book.librarian = librarian
book.location = library
return book
def create_book(cursor, row):
_row = sqlite3.Row(cursor, row)
book = Book()
book.id = _row['book_id']
book.author = _row['author']
book.isbn = _row['isbn']
book.title = _row['title']
book.year_published = _row['year_published']
librarian = Librarian()
librarian.id = _row['librarian_id']
librarian.first_name = _row['first_name']
librarian.last_name = _row['last_name']
library = Library()
library.id = _row['library_id']
library.title = _row['library_name']
book.librarian = librarian
book.location = library
return book
def create_book(cursor, row):
_row = sqlite3.Row(cursor, row)
book = Book()
book.id = _row["book_id"]
book.author = _row["author"]
book.isbn_number = _row["isbn_number"]
book.title = _row["title"]
book.year_published = _row["year_published"]
librarian = Librarian()
librarian.id = _row["librarian_id"]
librarian.first_name = _row["first_name"]
librarian.last_name = _row["last_name"]
library = Library()
library.id = _row["library_id"]
library.title = _row["library_name"]
book.librarian = librarian
book.location = library
return book
def create_library(cursor, row):
_row = sqlite3.Row(cursor, row)
library = Library()
library.id = _row["id"]
library.name = _row["name"]
library.address = _row["address"]
library.books = []
book = Book()
book.id = _row["book_id"]
book.title = _row["book_title"]
book.author = _row["author"]
book.publisher = _row["publisher"]
book.year_published = _row["year_published"]
book.isbn = _row["isbn"]
return (
library,
book,
)
def create_library(cursor, row):
_row = sqlite3.Row(cursor, row)
library = Library()
library.id = _row["id"]
library.title = _row["title"]
library.address = _row["address"]
library.books = []
book = Book()
book.id = _row["book_id"]
book.title = _row["book_title"]
book.author = _row["author"]
book.isbn = _row["isbn"]
book.year_published = _row["year_published"]
# Return a tuple containing the library and the
# book built from the data in the current row of
# the data set
return (library, book)
def create_library(cursor, row):
_row = sqlite3.Row(cursor, row)
library = Library()
library.id = _row["id"]
library.title = _row["title"]
library.address = _row["address"]
library.books = []
book = Book()
book.id = _row["id"]
book.title = _row["book_title"]
book.author = _row["author"]
book.isbn_number = _row["isbn_number"]
book.year = _row["year"]
return (
library,
book,
)
def list_libraries(request):
if request.method == 'GET':
all_libraries = Library.objects.all()
for library in all_libraries:
library.books = Book.objects.filter(location_id=library.id)
template = 'libraries/list.html'
context = {'all_libraries': all_libraries}
return render(request, template, context)
elif request.method == 'POST':
form_data = request.POST
new_library = Library()
new_library.name = form_data['name']
new_library.address = form_data['address']
new_library.save()
return redirect(reverse('libraryapp:libraries'))
def library_list(request):
if request.method == 'GET':
## SQL METHOD
# with sqlite3.connect(Connection.db_path) as conn:
# conn.row_factory = create_library
# db_cursor = conn.cursor()
# db_cursor.execute("""
# SELECT
# li.id,
# li.title,
# li.address,
# b.id book_id,
# b.title book_title,
# b.author,
# b.year_published,
# b.isbn
# FROM libraryapp_library li
# JOIN libraryapp_book b ON li.id = b.location_id
# """)
# libraries = db_cursor.fetchall()
## ORM METHOD
libraries = Library.objects.all()
for library in libraries:
library.books = Book.objects.filter(location_id=library.id)
# # SQL METHOD
# # Start with an empty dictionary
# library_groups = {}
# # Iterate the list of tuples
# for library, book in libraries:
# # If the dictionary does have a key of the current
# # library's `id` value, add the key and set the value
# # to the current library
# if library.id not in library_groups:
# library_groups[library.id] = library
# library_groups[library.id].books.append(book)
# # If the key does exist, just append the current
# # book to the list of books for the current library
# else:
# library_groups[library.id].books.append(book)
template = 'libraries/list.html'
context = {
# 'all_libraries': library_groups.values()
'all_libraries': libraries
}
return render(request, template, context)
elif request.method == 'POST':
form_data = request.POST
# # SQL METHOD
# with sqlite3.connect(Connection.db_path) as conn:
# db_cursor = conn.cursor()
# db_cursor.execute("""
# INSERT INTO libraryapp_library
# (
# title, address
# )
# VALUES (?, ?)
# """,
# (form_data['title'], form_data['address']))
# # ORM METHOD
new_library = Library(
title = form_data['title'],
address = form_data['address']
)
new_library.save()
return redirect(reverse('libraryapp:libraries'))
## SQL METHOD
# def create_library(cursor, row):
# _row = sqlite3.Row(cursor, row)
# library = Library()
# library.id = _row["id"]
# library.title = _row["title"]
# library.address = _row["address"]
# # Note: You are adding a blank books list to the library object
# # This list will be populated later (see below)
# library.books = []
# book = Book()
# book.id = _row["book_id"]
# book.title = _row["book_title"]
# book.author = _row["author"]
# book.isbn = _row["isbn"]
# book.year_published = _row["year_published"]
# # Return a tuple containing the library and the
# # book built from the data in the current row of
# # the data set
# return (library, book,)
