Litt mer sjekking av inputdata.
Har dessuten fjernet litt ubrukt kode.
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32880031cf
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daf5ae2294
5
db.py
5
db.py
@ -18,6 +18,8 @@ class User(Base):
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def __init__(self, name, card, credit=0):
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self.name = name
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if card == '':
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card = None
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self.card = card
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self.credit = credit
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@ -34,6 +36,9 @@ class Product(Base):
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name = Column(String(30))
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price = Column(Integer)
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bar_code_re = r"[0-9]+"
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name_re = r".+"
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def __init__(self, bar_code, name, price):
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self.name = name
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self.bar_code = bar_code
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164
text_based.py
164
text_based.py
@ -38,14 +38,29 @@ class Menu():
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return i
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return self.items[i]
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def input_str(self, prompt=None, regex=None):
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def input_str(self, prompt=None, regex=None, length_range=(None,None),
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empty_string_is_none=False):
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if regex != None:
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while True:
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result = self.input_str(prompt)
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result = self.input_str(prompt, length_range=length_range)
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if re.match(regex+'$', result):
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return result
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else:
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print 'Value must match regular expression "%s"' % regex
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if length_range != (None,None):
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while True:
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result = self.input_str(prompt)
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length = len(result)
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if ((length_range[0] and length < length_range[0]) or
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(length_range[1] and length > length_range[1])):
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if length_range[0] and length_range[1]:
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print 'Value must have length in range [%d,%d]' % length_range
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elif allowed_range[0]:
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print 'Value must have length at least %d' % length_range[0]
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else:
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print 'Value must have length at most %d' % length_range[1]
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else:
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return result
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if prompt == None:
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prompt = self.prompt
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try:
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@ -55,6 +70,8 @@ class Menu():
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raise ExitMenu()
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if result in exit_commands:
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raise ExitMenu()
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if empty_string_is_none and result == '':
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return None
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return result
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def input_int(self, prompt=None, allowed_range=(None,None)):
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@ -162,22 +179,22 @@ class Selector(Menu):
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print self.name
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class ChargeMenu(Menu):
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def __init__(self):
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self.name = "Add credits to a user account"
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# class ChargeMenu(Menu):
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# def __init__(self):
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# self.name = "Add credits to a user account"
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def execute(self):
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self.session = Session()
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amount = self.input_int('Amount to be added> ')
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user = self.input_user('To user>')
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t = Transaction(user, -amount, 'Add '+str(amount)+' to user '+user.name)
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t.perform_transaction()
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self.session.add(t)
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self.session.commit()
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print 'Added %d kr to user %s\'s account' % (amount, user.name)
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print 'User %s\'s credit is now %d kr' % (user,user.credit)
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self.session.close()
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self.pause()
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# def execute(self):
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# self.session = Session()
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# amount = self.input_int('Amount to be added> ')
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# user = self.input_user('To user>')
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# t = Transaction(user, -amount, 'Add '+str(amount)+' to user '+user.name)
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# t.perform_transaction()
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# self.session.add(t)
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# self.session.commit()
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# print 'Added %d kr to user %s\'s account' % (amount, user.name)
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# print 'User %s\'s credit is now %d kr' % (user,user.credit)
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# self.session.close()
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# self.pause()
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class TransferMenu(Menu):
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def __init__(self):
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@ -186,7 +203,7 @@ class TransferMenu(Menu):
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def _execute(self):
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self.print_header()
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self.session = Session()
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amount = self.input_int('Transfer amount> ')
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amount = self.input_int('Transfer amount> ', (-100000,100000))
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user1 = self.input_user('From user> ')
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user2 = self.input_user('To user> ')
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t1 = Transaction(user1, amount,
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@ -197,10 +214,13 @@ class TransferMenu(Menu):
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t2.perform_transaction()
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self.session.add(t1)
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self.session.add(t2)
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self.session.commit()
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print 'Transfered %d kr from %s to %s' % (amount, user1, user2)
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print 'User %s\'s credit is now %d kr' % (user1, user1.credit)
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print 'User %s\'s credit is now %d kr' % (user2, user2.credit)
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try:
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self.session.commit()
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print 'Transfered %d kr from %s to %s' % (amount, user1, user2)
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print 'User %s\'s credit is now %d kr' % (user1, user1.credit)
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print 'User %s\'s credit is now %d kr' % (user2, user2.credit)
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except sqlalchemy.exc.SQLAlchemyError, e:
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print 'Could not perform transfer: %s' % e
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self.session.close()
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self.pause()
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@ -212,8 +232,8 @@ class AddUserMenu(Menu):
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def _execute(self):
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self.print_header()
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self.session = Session()
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username = self.input_str('User name> ', regex=User.name_re)
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cardnum = self.input_str('Card number> ', regex=User.card_re)
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username = self.input_str('User name> ', User.name_re, (1,10))
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cardnum = self.input_str('Card number> ', User.card_re, (0,10))
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user = User(username, cardnum)
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self.session.add(user)
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try:
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@ -233,10 +253,15 @@ class EditUserMenu(Menu):
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self.print_header()
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self.session = Session()
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user = self.input_user('User> ')
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print 'Editing user %s' % user.name
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user.card = self.input_str('Card number (currently "%s")> ' % user.card,
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regex=User.card_re)
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self.session.commit()
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print 'User %s stored' % user.name
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User.card_re, (0,10),
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empty_string_is_none=True)
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try:
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self.session.commit()
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print 'User %s stored' % user.name
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except sqlalchemy.exc.SQLAlchemyError, e:
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print 'Could not store user %s: %s' % (user.name,e)
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self.session.close()
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self.pause()
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@ -249,14 +274,14 @@ class AddProductMenu(Menu):
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self.session = Session()
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self.print_header()
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bar_code = self.input_int('Bar code> ')
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name = self.input_str('Name> ', regex=r".+")
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price = self.input_int('Price> ', (1,None))
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name = self.input_str('Name> ', Product.name_re, (1,30))
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price = self.input_int('Price> ', (1,100000))
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product = Product(bar_code, name, price)
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self.session.add(product)
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try:
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self.session.commit()
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print 'Product %s stored' % name
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except sqlalchemy.exc.IntegrityError, e:
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except sqlalchemy.exc.SQLAlchemyError, e:
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print 'Could not store product %s: %s' % (name,e)
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self.session.close()
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self.pause()
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@ -277,12 +302,15 @@ class EditProductMenu(Menu):
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('store', 'Store')])
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what = selector.execute()
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if what == 'name':
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product.name = self.input_str('Name> ')
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product.name = self.input_str('Name> ', Product.name_re, (1,30))
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elif what == 'price':
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product.price = self.input_int('Price> ')
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product.price = self.input_int('Price> ', (1,100000))
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elif what == 'store':
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self.session.commit()
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print 'Product %s stored' % product.name
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try:
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self.session.commit()
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print 'Product %s stored' % product.name
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except sqlalchemy.exc.SQLAlchemyError, e:
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print 'Could not store product %s: %s' % (product.name, e)
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self.session.close()
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self.pause()
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return
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@ -355,14 +383,16 @@ class BuyMenu(Menu):
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PurchaseEntry(self.purchase, thing, 1)
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self.purchase.perform_purchase()
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self.session.add(self.purchase)
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self.session.commit()
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print 'Purchase stored.'
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self.print_purchase()
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for t in self.purchase.transactions:
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print 'User %s\'s credit is now %d kr' % (t.user.name, t.user.credit)
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try:
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self.session.commit()
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except sqlalchemy.exc.SQLAlchemyError, e:
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print 'Could not store purchase: %s' % e
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else:
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print 'Purchase stored.'
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self.print_purchase()
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for t in self.purchase.transactions:
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print 'User %s\'s credit is now %d kr' % (t.user.name, t.user.credit)
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self.session.close()
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self.pause()
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return True
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@ -408,15 +438,18 @@ class AdjustCreditMenu(Menu): # reimplements ChargeMenu; these should be combine
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self.session = Session()
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user = self.input_user('User> ')
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print 'User %s\'s credit is %d kr' % (user.name, user.credit)
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amount = self.input_int('Add amount> ')
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description = self.input_str('Log message> ')
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amount = self.input_int('Add amount> ', (-100000,100000))
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description = self.input_str('Log message> ', length_range=(0,50))
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if description == '':
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description = 'manually adjusted credit'
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transaction = Transaction(user, -amount, description)
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transaction.perform_transaction()
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self.session.add(transaction)
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self.session.commit()
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print 'User %s\'s credit is now %d kr' % (user.name, user.credit)
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try:
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self.session.commit()
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print 'User %s\'s credit is now %d kr' % (user.name, user.credit)
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except sqlalchemy.exc.SQLAlchemyError, e:
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print 'Could not store transaction: %s' % e
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self.session.close()
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self.pause()
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@ -429,48 +462,13 @@ class ProductListMenu(Menu):
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self.print_header()
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session = Session()
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product_list = session.query(Product).all()
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line_format = '%-20s %6s %-15s'
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line_format = '%-30s | %6s | %-15s'
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print line_format % ('name', 'price', 'bar code')
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print '-------------------------------------------'
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print '---------------------------------------------------------'
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for p in product_list:
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print line_format % (p.name, p.price, p.bar_code)
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self.pause()
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class AddProductMenu(Menu):
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def __init__(self):
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Menu.__init__(self, 'Add product')
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def _execute(self):
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name = self.input_str('Product name> ')
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bar_code = self.input_int('Bar code> ')
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price = self.input_int('Price> ')
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product = Product(bar_code,name,price)
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session = Session()
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session.add(product)
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session.commit()
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session.close()
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print 'Added product %s, price %d, bar code %d' % (name,price,bar_code)
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self.pause()
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#class MainMenu():
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# def __init__(self):
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# self.menu_list = [Menu("Buy"),ChargeMenu(), Menu("Add User"), Menu("Add Product")]
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# def execute(self):
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# while 1:
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# print "Main Menu: \nWhat do you want to do? \n"
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# for i in range(len(self.menu_list)):
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# print i+1," ) ",self.menu_list[i].name
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# result = raw_input('\nEnter a number corresponding to your action, or "exit" to exit \n')
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# if result in ["1","2","3","4"]:
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# self.menu_list[int(result)-1].execute()
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# elif result in ["quit", "exit", "abort"]:
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# print "OK, quitting"
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# break
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# else:
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# print "This does not make sense"
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def dwim_search(string, session):
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typ = guess_data_type(string)
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@ -529,7 +527,7 @@ def retrieve_product(search_str, session):
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#main = MainMenu()
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main = Menu('Dibbler main menu',
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items=[BuyMenu(), ProductListMenu(), ShowUserMenu(),
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AdjustCreditMenu(), ChargeMenu(), TransferMenu(),
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AdjustCreditMenu(), TransferMenu(),
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Menu('Add/edit',
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items=[AddUserMenu(), EditUserMenu(),
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AddProductMenu(), EditProductMenu()])
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