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How to calculate the column sum in a flask-admin ModelView over the rows of the model which have been...
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I am using flask-admin and I want to display a column sum of one of my models in the corresponding view.
I declared a model like this:
class Banktransfer(db.Model):
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
booking_date = db.Column(db.Date, nullable=False)
purpose = db.Column(db.String(255))
amount = db.Column(db.Float, nullable=False)
In the corresponding view I added a column_filter and a searchfield. Furthermore I calculate the balance (sum of the column "amount" over all rows) and pass it to the template so it can be displayed on top of the page.
class BanktransferView(sqla.ModelView):
column_filters = ("booking_date",)
column_searchable_list = ('purpose',)
list_template = 'banktransfer_list.html'
@expose('/')
def index_view(self):
self._template_args['balance'] = self.get_balance()
return super(BanktransferView, self).index_view()
def __init__(self, session, **kwargs):
super(BanktransferView, self).__init__(Banktransfer, session, **kwargs)
def get_balance(self):
balance = self.session.query(func.sum(Banktransfer.amount)).first()[0]
return balance
I would also like to display the sum of the column "amount" over all the rows which are selected through the filters and searchbox by the user. Can anyone help me out here? My idea basicly is to pass another value to the template like this:
self._template_args['balance_of_selected'] = self.get_balance_of_selected()
But I don't know how to implement the get_balance_of_selected() method because I need the chosen filters, etc. by the user and I dont know how to adress those.
python flask-sqlalchemy flask-admin
asked Jan 3 at 4:32
luclechefluclechef
262
add a comment |
I am using flask-admin and I want to display a column sum of one of my models in the corresponding view.
I declared a model like this:
class Banktransfer(db.Model):
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
booking_date = db.Column(db.Date, nullable=False)
purpose = db.Column(db.String(255))
amount = db.Column(db.Float, nullable=False)
In the corresponding view I added a column_filter and a searchfield. Furthermore I calculate the balance (sum of the column "amount" over all rows) and pass it to the template so it can be displayed on top of the page.
class BanktransferView(sqla.ModelView):
column_filters = ("booking_date",)
column_searchable_list = ('purpose',)
list_template = 'banktransfer_list.html'
@expose('/')
def index_view(self):
self._template_args['balance'] = self.get_balance()
return super(BanktransferView, self).index_view()
def __init__(self, session, **kwargs):
super(BanktransferView, self).__init__(Banktransfer, session, **kwargs)
def get_balance(self):
balance = self.session.query(func.sum(Banktransfer.amount)).first()[0]
return balance
I would also like to display the sum of the column "amount" over all the rows which are selected through the filters and searchbox by the user. Can anyone help me out here? My idea basicly is to pass another value to the template like this:
self._template_args['balance_of_selected'] = self.get_balance_of_selected()
But I don't know how to implement the get_balance_of_selected() method because I need the chosen filters, etc. by the user and I dont know how to adress those.
python flask-sqlalchemy flask-admin
asked Jan 3 at 4:32
luclechefluclechef
262
This might be of help stackoverflow.com/questions/47124728/…
– gittert
Jan 4 at 10:27
add a comment |
I am using flask-admin and I want to display a column sum of one of my models in the corresponding view.
I declared a model like this:
class Banktransfer(db.Model):
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
booking_date = db.Column(db.Date, nullable=False)
purpose = db.Column(db.String(255))
amount = db.Column(db.Float, nullable=False)
In the corresponding view I added a column_filter and a searchfield. Furthermore I calculate the balance (sum of the column "amount" over all rows) and pass it to the template so it can be displayed on top of the page.
class BanktransferView(sqla.ModelView):
column_filters = ("booking_date",)
column_searchable_list = ('purpose',)
list_template = 'banktransfer_list.html'
@expose('/')
def index_view(self):
self._template_args['balance'] = self.get_balance()
return super(BanktransferView, self).index_view()
def __init__(self, session, **kwargs):
super(BanktransferView, self).__init__(Banktransfer, session, **kwargs)
def get_balance(self):
balance = self.session.query(func.sum(Banktransfer.amount)).first()[0]
return balance
I would also like to display the sum of the column "amount" over all the rows which are selected through the filters and searchbox by the user. Can anyone help me out here? My idea basicly is to pass another value to the template like this:
self._template_args['balance_of_selected'] = self.get_balance_of_selected()
But I don't know how to implement the get_balance_of_selected() method because I need the chosen filters, etc. by the user and I dont know how to adress those.
python flask-sqlalchemy flask-admin
asked Jan 3 at 4:32
luclechefluclechef
262
I am using flask-admin and I want to display a column sum of one of my models in the corresponding view.
I declared a model like this:
class Banktransfer(db.Model):
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
booking_date = db.Column(db.Date, nullable=False)
purpose = db.Column(db.String(255))
amount = db.Column(db.Float, nullable=False)
In the corresponding view I added a column_filter and a searchfield. Furthermore I calculate the balance (sum of the column "amount" over all rows) and pass it to the template so it can be displayed on top of the page.
class BanktransferView(sqla.ModelView):
column_filters = ("booking_date",)
column_searchable_list = ('purpose',)
list_template = 'banktransfer_list.html'
@expose('/')
def index_view(self):
self._template_args['balance'] = self.get_balance()
return super(BanktransferView, self).index_view()
def __init__(self, session, **kwargs):
super(BanktransferView, self).__init__(Banktransfer, session, **kwargs)
def get_balance(self):
balance = self.session.query(func.sum(Banktransfer.amount)).first()[0]
return balance
I would also like to display the sum of the column "amount" over all the rows which are selected through the filters and searchbox by the user. Can anyone help me out here? My idea basicly is to pass another value to the template like this:
self._template_args['balance_of_selected'] = self.get_balance_of_selected()
But I don't know how to implement the get_balance_of_selected() method because I need the chosen filters, etc. by the user and I dont know how to adress those.
python flask-sqlalchemy flask-admin
python flask-sqlalchemy flask-admin
asked Jan 3 at 4:32
luclechefluclechef
262
asked Jan 3 at 4:32
luclechefluclechef
262
edited Jan 3 at 4:37
luclechef
asked Jan 3 at 4:32
luclechefluclechef
262
asked Jan 3 at 4:32
luclechefluclechef
262
asked Jan 3 at 4:32
luclechefluclechef
262
262
This might be of help stackoverflow.com/questions/47124728/…
– gittert
Jan 4 at 10:27
add a comment |
This might be of help stackoverflow.com/questions/47124728/…
– gittert
Jan 4 at 10:27
This might be of help stackoverflow.com/questions/47124728/…
– gittert
Jan 4 at 10:27
This might be of help stackoverflow.com/questions/47124728/…
– gittert
Jan 4 at 10:27
add a comment |
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This might be of help stackoverflow.com/questions/47124728/…
– gittert
Jan 4 at 10:27