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DML.py
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DML.py
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def select_All_users(conn):
"""
Affiche la liste de tous les utilisateurs.
:param conn: Connexion à la base de données
"""
cur = conn.cursor()
cur.execute("""
SELECT *
FROM Users
""")
rows = cur.fetchall()
for row in rows:
print(row)
def select_all_posts(conn):
"""
Affiche la liste de tous les posts des randonneurs.
:param conn: Connexion à la base de données
"""
cur = conn.cursor()
cur.execute("""
SELECT *
FROM Posts
""")
rows = cur.fetchall()
for row in rows:
print(row)
def select_all_comments(conn):
"""
Affiche la liste de tous les commentaires des posts.
:param conn: Connexion à la base de données
"""
cur = conn.cursor()
cur.execute("""
SELECT *
FROM Comments
""")
rows = cur.fetchall()
for row in rows:
print(row)
def select_all_journeys(conn):
"""
Affiche la liste de toutes les randonnées.
:param conn: Connexion à la base de données
"""
cur = conn.cursor()
cur.execute("""
SELECT *
FROM Journeys
""")
rows = cur.fetchall()
for row in rows:
print(row)
def select_all_hikes(conn):
"""
Affiche la liste de tous les randonneurs et les leur randonnées effetuées.
:param conn: Connexion à la base de données
"""
cur = conn.cursor()
cur.execute("""
SELECT *
FROM Hikes
""")
rows = cur.fetchall()
for row in rows:
print(row)
def select_all_upvotes(conn):
cur = conn.cursor()
cur.execute("""
SELECT *
FROM Upvotes
""")
rows = cur.fetchall()
for row in rows:
print(row)
def select_all_downvotes(conn):
cur = conn.cursor()
cur.execute("""
SELECT *
FROM Downvotes
""")
rows = cur.fetchall()
for row in rows:
print(row)
############################# INSERT REQUESTS ##############################
def insert_user(conn):
firstName=input("userFirstName: ")
lastName=input("userLastName: ")
dateOfBirth=input("userDateOfBirth format(YYYY-MM-DD): ")
email=input("userEmail: ")
cur = conn.cursor()
cur.execute("""
INSERT INTO Users
(userFirstName,userLastName,userDateOfBirth,userEmail)
VALUES (?,?,?,?)
""",[firstName,lastName,dateOfBirth,email])
def insert_post (conn):
title=input("postTitle : ")
body=input("postBody : ")
# postVotes=int(input("postVotes : "))
userId=int(input("userId: "))
cur = conn.cursor()
cur.execute("""
INSERT INTO Posts
(postTitle,postBody,userId)
VALUES
(?,?,?,?)
""",[title,body,userId])
def insert_comment(conn):
body=input("commentBody : ")
userId=int(input("userId: "))
postId=int(input("postId: "))
cur = conn.cursor()
cur.execute("""
INSERT INTO Comments
(commentBody,postId,userId)
VALUES
(?,?,?)
""",[body,postId,userId])
def insert_journey(conn):
name=input("journeyName : ")
location=input("journeyLocation: ")
level=input("difficultyLevel: ")
cur = conn.cursor()
cur.execute("""
INSERT INTO Journeys
(journeyName,journeyLocation,difficultyLevel)
VALUES
(?,?,?)
""",[name,location,level])
def insert_hike(conn):
userId=int(input("userId : "))
journeyId=int(input("journeyId: "))
cur = conn.cursor()
cur.execute("""
INSERT INTO Hikes
(userId,journeyId)
VALUES
(?,? )
""",[userId,journeyId])
def upvote_post(conn):
userId=int(input("userId : "))
postId=int(input("postId: "))
cur = conn.cursor()
cur.execute("""
INSERT INTO Upvotes
(userId, postId)
VALUES
(?,?)
""",[userId,postId])
#lire notre vue pour avoir postVotes et update la table post
def downvote_post(conn):
userId=int(input("userId : "))
postId=int(input("postId: "))
cur = conn.cursor()
cur.execute("""
INSERT INTO Upvotes
(userId, postId)
VALUES
(?,?)
""",[userId,postId])
################################# UPDATE REQUESTS ###########################################
def update_user(conn):
userId=int(input("userId : "))
firstName=input("userFirstName: ")
lastName=input("userLastName: ")
dateOfBirth=input("userDateOfBirth format(YYYY-MM-DD): ")
email=input("userEmail: ")
cur = conn.cursor()
cur.execute("""
UPDATE Users
SET userFirstName=?,userLastName=?,userDateOfBirth=?,userEmail=?
WHERE userId=?
""",[firstName,lastName,dateOfBirth,email,userId])
def update_post(conn):
postId=int(input("postId: "))
title=input("postTitle : ")
# votes=int(input("postVotes : "))
body=input("postBody : ")
cur = conn.cursor()
cur.execute("""
UPDATE Posts
SET postTitle=?,postBody=?
WHERE postId=?
""",[title,body,postId])
def update_comment(conn):
commentId=int(input("commentId: "))
body=input("commentBody : ")
cur = conn.cursor()
cur.execute("""
UPDATE Comments
SET commentBody=?
WHERE commentId=?
""",[body,commentId])
def update_journey(conn):
journeyId=int(input("journeyId: "))
name=input("journeyName : ")
location=input("journeyLocation: ")
level=input("difficultyLevel: ")
cur = conn.cursor()
cur.execute("""
UPDATE Journeys
journeyName=?,journeyLocation=?,difficultyLevel=?
""",[name,location,level])
########################################### DELETE REQUESTS ##############################################################
def delete_user(conn):
userId=int(input("userId: "))
#Pour supprimer un utilisateur il faut bien prendre en compte les autres dépendances.
#Il faut donc supprimer l'apparition de cet utilisateur dans l'ordre inverse de création des relations
#DELETE FROM Downvotes
cur = conn.cursor()
cur.execute("""
DELETE FROM Downvotes
WHERE userId=?
""",[userId])
#DELETE FROM DOWNVOTES FOR OTHER USERS
cur = conn.cursor()
cur.execute("""
WITH Ids AS(
SELECT postId
FROM Posts
WHERE userId=?
)
DELETE FROM Downvotes
WHERE postId IN (
SELECT *
FROM Ids
)
""",[userId])
#DELETE FROM Upvotes
cur.execute("""
DELETE FROM Upvotes
WHERE userId=?
""",[userId])
#DELETE FROM UPVOTES FOR OTHER USERS
cur = conn.cursor()
cur.execute("""
WITH Ids AS(
SELECT postId
FROM Posts
WHERE userId=?
)
DELETE FROM Upvotes
WHERE postId IN (
SELECT *
FROM Ids
)
""",[userId])
#DELETE FROM Hikes
cur.execute("""
DELETE FROM Hikes
WHERE userId=?
""",[userId])
#DELETE FROM Comments
cur.execute("""
DELETE FROM Comments
WHERE userId=?
""",[userId])
#DELETE FROM COMMENTS FOR OTHER USERS
cur = conn.cursor()
cur.execute("""
WITH Ids AS(
SELECT postId
FROM Posts
WHERE userId=?
)
DELETE FROM Comments
WHERE postId IN (
SELECT *
FROM Ids
)
""",[userId])
#DELETE FROM Posts
cur.execute("""
DELETE FROM Posts
WHERE userId=?
""",[userId])
# DELETE USER
cur.execute("""
DELETE FROM Users
WHERE userId=?
""",[userId])
def delete_post(conn):
postId=int(input("postId: "))
#ON FAIT LA MÊME CHOSE QUE POUR LA SUPPRESSION D'UN URILISATEUR
#DELETE FROM Downvotes
cur = conn.cursor()
cur.execute("""
DELETE FROM Downvotes
WHERE postId=?
""",[postId])
#DELETE FROM Upvotes
cur.execute("""
DELETE FROM Upvotes
WHERE postId=?
""",[postId])
#DELETE FROM Comments
cur.execute("""
DELETE FROM Comments
WHERE postId=?
""",[postId])
#DELETE POST
cur.execute("""
DELETE FROM Posts
WHERE postId=?
""",[postId])
def delete_comment(conn):
commentId=int(input("commentId: "))
cur = conn.cursor()
cur.execute("""
DELETE FROM Comments
WHERE commentId=?
""",[commentId])