Insert data from a SQL query into a tkinter Entry field - python

I'm trying to put data from a database (SQLite3) into a set of entry fields in Tkinter.
My hope is that the data-snippets that exist in the database query will be put into the entries to show the user what info is in the db and give the choice to update empty fields.
I however have a hard time dealing with the returned None fields from the DB. None cannot be inserted into entries using .insert()
I've tried to sanitize the data first but since the different data are ints and text's I have not find a suitable replacement. I would also prefer the entries to be empty unless there is actual data to place there.
I've also tried to do an if statement before each line in the vendors_to_fields function but that did not work and seemed really messy.
Bonus question:
Is there a better way to insert values from a tuple into the different entries? I've been thinking about making 2 lists and using list comprehension but I could not solve it.
I hope I make sense, this has been a long coding session
Thank you for all input
My code:
def Order_window():
ord_win = Toplevel(root)
ord_win.title('Orders')
ord_win.geometry('800x600')
i = 0
# Functions
def controller():
vendor_list = list(vendors)
if i <= len(vendor_list):
vendor = vendor_list[i]
print(vendor)
data_from_db(vendor)
else:
vendor_name['text'] = 'All orders are done'
def data_from_db(vendor):
vendor_info_tuple = db.execute(
'SELECT * FROM vendors WHERE (vendor_id = ?)', [vendor])
vendor_info_tuple = vendor_info_tuple.fetchone()
connection.commit()
vendor_info = list(vendor_info_tuple)
if vendor_info[0] is None:
vendor_name['text'] == 'Vendor not in DB, better call Sal'
else:
print(vendor_info)
vendor_to_fields(vendor_info)
def vendor_to_fields(vendor_info):
for field in vendor_info:
if field is None:
vendor_info[field] = 0
print(vendor_info)
vendor_name['text'] = vendor_info[1]
vendor_min1.insert(0, vendor_info[5])
vendor_email.insert(0, vendor_info[2])
vendor_cc.insert(0, vendor_info[3])
vendor_message.insert(0, vendor_info[4])
def next_vendor():
pass
def update_db():
pass
# Layout order window
Label(ord_win, text='Vendor').grid(row=0)
Label(ord_win, text='Min order value').grid(row=1)
Label(ord_win, text='Email').grid(row=2)
Label(ord_win, text='CC').grid(row=3)
Label(ord_win, text='Message').grid(row=4)
vendor_name = Label(ord_win).grid(row=0, column=1)
vendor_min1 = Entry(ord_win)
vendor_min1.grid(row=1, column=1)
vendor_email = Entry(ord_win)
vendor_email.grid(row=2, column=1)
vendor_cc = Entry(ord_win)
vendor_cc.grid(row=3, column=1)
vendor_message = Entry(ord_win)
vendor_message.grid(row=4, column=1)
controller()

Related

How to get the Values from the Entry box in Tkinter?

def in_Vals():
in_win = Tk()
in_win.title("Check In Details")
in_win.geometry("700x700")
in_win.resizable(0,0)
# title
title = Label(in_win,text="Check In Details",font=("Harlow Solid Italic",30,"italic"),fg="black",bg="#fbb08c")
title.pack(anchor="center",pady=5)
#creating label's
_Id_ = Label(in_win,text="Id :",font=("Times New Roman",15,"italic"),fg="black",bg="#fbb08c")
_Name_ = Label(in_win,text="Name :",font=("Times New Roman",15,"italic"),fg="black",bg="#fbb08c")
_Date_ = Label(in_win,text="Date :",font=("Times New Roman",15,"italic"),fg="black",bg="#fbb08c")
_Time_ = Label(in_win,text="Time :",font=("Times New Roman",15,"italic"),fg="black",bg="#fbb08c")
_Number_ = Label(in_win,text="Number :",font=("Times New Roman",15,"italic"),fg="black",bg="#fbb08c")
_Id_.pack(anchor='w',padx=10,pady=20)
_Name_.pack(anchor='w',padx=10,pady=20)
_Date_.pack(anchor='w',padx=10,pady=20)
_Time_.pack(anchor='w',padx=10,pady=20)
_Number_.pack(anchor='w',padx=10,pady=20)
# creating submit function
def submit():
print(f"{in_val_1}\n{in_val_2}\n{in_val_3}\n{in_val_4}\n{in_val_5}")
# creating entries
Id = Entry(in_win,width=25,font=("Courier",15,'bold'))
Name = Entry(in_win,width=25,font=("Courier",15,'bold'))
Date = Entry(in_win,width=25,font=("Courier",15,'bold'))
Time = Entry(in_win,width=25,font=("Courier",15,'bold'))
Number = Entry(in_win,width=25,font=("Courier",15,'bold'))
Id.place(x=100,y=87)
Name.place(x=100,y=157)
Date.place(x=100,y=227)
Time.place(x=100,y=293)
Number.place(x=100,y=360)
#getting values
in_val_1 = Id.get()
in_val_2 = Name.get()
in_val_3 = Date.get()
in_val_4 = Time.get()
in_val_5 = Number.get()
# creating submit button
submit = Button(in_win,text="Submit",font=("Wild Latin",15,"bold"),command=submit)
submit.place(x = 250,y=450)
in_win.config(bg="#fbb08c")
in_win.mainloop()
Here the function in_vals() is a coded to take data from the ID, Name, Date, Time, Number Entries and assign the values of The entries to the variables in_val_1 to in_val_5 ,to get the values from the entry box I have used the .get() Method. but when I try to Print the Variables that I assigned to the .get() method, it prints some white Space's.
The solution for the problem same as mine is
defining the values outside the the button function does not get anything.
here I have defined out side the button function
after defining it inside the button function it gives me the desired output

Setting individual column headers in Python Tkinter's Tksheet widget / rolling back changes in same

I am writing a UI for a simulation program which accepts tabular data.
The basic functionality I need is for the user to be able to enter / change data in cells either by directly typing into them, or by pasting data (usually from an excel sheet). The program checks this data and either accepts or rejects it before running the simulation. I also want to let the user type in their own column headers for the table.
Tksheet is an awesome Tkinter add-on, giving an excel-like "feel" to the input frame, but its documentation leaves much to be desired. (For instance: each event generates a different event-information array--see code for two event-processing routines below--but nowhere is it specified what these parameters are. It is left for the user to discover using trial and error, or trying to read the source code--which is not documented either).
I have two specific questions:
Is there any way to not-commit, or to roll back, changes to the table? If my data-tests fail, how do I prevent potentially harmful user input from being entered into the table?
Obviously I can (and do) add a begin_*** event in which I can keep copies of the original values, and then reset the table values if the data testing at the end_*** event fails, but this is wasteful and inelegant. I have a feeling that the set_data_ref_on_destroy property has something to do with such a capability, but the documentation does not explain what this parameter is or how to use it.
How can I change a single column header at a time? The .headers property seems to work only with a full list of headers starting with column 0 (if I run self.sheet.headers([single_value], index = i) it ignores the index parameter and plugs single_value in column 0)
Again, I can set the column headers to something non-default at init and keep a running list of all headers, so that I can reset all the headers on each change, but this is wasteful and inelegant.
In the following code sample I set up a simple table, and bind three user-generated events: one for typing a value to a cell, one for pasting a block of values, and one for adding an option to the right-click menu of a column header, to allow the user to type a name to the column.
from tksheet import Sheet
import tkinter as tk
import tkinter.messagebox as msg
import tkinter.simpledialog as sd
class demo(tk.Tk):
def __init__(self):
tk.Tk.__init__(self)
self.grid_columnconfigure(0, weight=1) # This configures the window's escalators
self.grid_rowconfigure(0, weight=1)
self.frame = tk.Frame(self)
self.frame.grid_columnconfigure(0, weight=1)
self.frame.grid_rowconfigure(0, weight=1)
self.frame.grid(row=0, column=0, sticky="nswe")
self.sheet = Sheet(self.frame, data=[[]]) # set up empty table
self.sheet.grid(row=0, column=0, sticky="nswe")
self.sheet.enable_bindings(bindings= # enable table behavior
("single_select",
"select_all",
"column_select",
"row_select",
"drag_select",
"arrowkeys",
"column_width_resize",
"double_click_column_resize",
"row_height_resize",
"double_click_row_resize",
"right_click_popup_menu",
"rc_select", # rc = right click
"copy",
"cut",
"paste",
"delete",
"undo",
"edit_cell"
))
# Note that options that change the structure/size of the table (e.g. insert/delete col/row) are disabled
# make sure that pasting data won't change table size
self.sheet.set_options(expand_sheet_if_paste_too_big=False)
# bind specific events to my own functions
self.sheet.extra_bindings("end_edit_cell", func=self.cell_edited)
self.sheet.extra_bindings("end_paste", func=self.cells_pasted)
label = "Change column name" # Add option to the right-click menu for column headers
self.sheet.popup_menu_add_command(label, self.column_header_change, table_menu=False, index_menu=False, header_menu=True)
# Event functions
def cell_edited(self, info_tuple):
r, c, key_pressed, updated_value = info_tuple # break the info about the event to individual variables
if check_input(updated_value):
pass # go do stuff with the updated table
else:
msg.showwarning("Input Error", "'" + updated_value + "' is not a legal value")
pass # what do I do here? How do I make tksheet *not* insert the change to the table?
def cells_pasted(self, info_tuple):
key_pressed, rc_tuple, updated_array = info_tuple # break the info about the event to individual variables
r, c = rc_tuple # row & column where paste begins
if check_input(updated_array):
pass # go do stuff with the updated table
else:
msg.showwarning("Input Error", "pasted array contains illegal values")
pass # what do I do here? How do I make tksheet *not* insert the change to the table?
def column_header_change(self):
r, c = self.sheet.get_currently_selected()
col_name = sd.askstring("User Input", "Enter column name:")
if col_name is not None and col_name != "": # if user cancelled (or didn't enter anything), do nothing
self.sheet.headers([col_name], index=c) # This does not work - it always changes the 1st col
self.sheet.redraw()
# from here down is test code
def check_input(value): # instead of actual data testing we let the tester choose a pass/fail response
return msg.askyesno("Instead of input checking","Did input pass entry checks?")
test = demo()
lst = ["hello", "world"]
test.sheet.insert_column(values=lst)
lst = [0, "hello", "yourself"]
test.sheet.insert_column(values=lst)
test.mainloop()
I realize that the original post is now 5 months old, and I'm a relative n00b, but I hope this helps.
Given a tksheet instance 'sheet' that has already been populated with headers ["A"."B"."C"], the following works to change the header "B" to "NEW":
sheet.headers()[1]="NEW"
Hope this helps.

Short description isn't working for delete selected (delete_selected.short_description isn't changing the name)

I am currently trying to change the name of the "Delete Selected" admin action. I have already effectively override the default (so I can store some data before completely deleting it), but now I want to change the option from the vague "Deleted selected" to something more specific like "Deleted all selected registrations." Or, at least, for it to say, "Deleted selected registrations" like it did before I overwrote the function.
I have so far tried this:
delete_selected.short_description = 'Delete all selected registrations'
But the option is still "Deleted selected." Is there a way to fix this?
Here's my code:
def delete_selected(modeladmin, request, queryset):
"""
This overrides the defult deleted_selected because we want to gather the data from the registration and create a
DeletedRegistration object before we delete it.
"""
for registration in queryset:
reg = registration.get_registrant()
if registration.payment_delegation:
delegate_name = registration.payment_delegation.name
delegate_email = registration.payment_delegation.email
else:
delegate_name = None
delegate_email = None
registration_to_delete = DeletedRegistration.objects.create(
registrant_name = reg.full_name(),
registrant_email = reg.email,
registrant_phone_num = reg.phone,
delegate_name = delegate_name,
delegate_email = delegate_email,
# Filtering out people (with True) who couldn't participate in events because we are only interested in the people
# we had to reserve space and prepare materials for.
num_of_participants = registration.get_num_party_members(True),
special_event = registration.sibs_event,
)
registration.delete()
delete_selected.short_description = 'Delete all selected registrations'
edit: just tried delete_selected.list_display that didn't work either
You can't have it in the function, so I just had to tab it back one space and it worked.
example:
def delete_selected(modeladmin, request, queryset)
code
delete_selected.short_description = "preferred name"
thanks.

Dropbox: /delta and shared folders

I'm using the /delta feature to find whether anything has changed in the Dropbox account.
When I run it for the first time (till 'has_more' becomes False), it's fine. But when I run it again (with the cursor from the previous call), it shows a list of files. I run it again (without changing any file), and I still get the same list of files (although they hadn't changed). I figured that these files were in a shared folder.
I tested again with a new set of files in that folder and I get the same result -- these files show up in the delta entries although they weren't changed.
What's wrong?
I feel this is a bug. Any way to get around it?
Edit:
Here's the code
def getDeltaEntries(self): #this function is a method of a class
def _getDelta():
delta = self.client.delta(self.cursor)
entries = delta.get('entries')
has_more = delta.get('has_more')
self.cursor = delta['cursor']
while has_more:
delt = self.client.delta(self.cursor)
entries.extend(delta.get('entries'))
has_more = delt.get('has_more')
self.cursor = delta['cursor']
return entries
#workaround: query for delta twice and if the result is the same both times,
#it implies there's no change
ent1 = _getDelta()
ent2 = _getDelta()
if ent1 == ent2:
entries = []
else:
entries = ent1
return entries
It looks like your code is using self.cursor = delta['cursor'] when it should be using self.cursor = delt['cursor'].

What is an efficient way of inserting thousands of records into an SQLite table using Django?

I have to insert 8000+ records into a SQLite database using Django's ORM. This operation needs to be run as a cronjob about once per minute.
At the moment I'm using a for loop to iterate through all the items and then insert them one by one.
Example:
for item in items:
entry = Entry(a1=item.a1, a2=item.a2)
entry.save()
What is an efficient way of doing this?
Edit: A little comparison between the two insertion methods.
Without commit_manually decorator (11245 records):
nox#noxdevel marinetraffic]$ time python manage.py insrec
real 1m50.288s
user 0m6.710s
sys 0m23.445s
Using commit_manually decorator (11245 records):
[nox#noxdevel marinetraffic]$ time python manage.py insrec
real 0m18.464s
user 0m5.433s
sys 0m10.163s
Note: The test script also does some other operations besides inserting into the database (downloads a ZIP file, extracts an XML file from the ZIP archive, parses the XML file) so the time needed for execution does not necessarily represent the time needed to insert the records.
You want to check out django.db.transaction.commit_manually.
http://docs.djangoproject.com/en/dev/topics/db/transactions/#django-db-transaction-commit-manually
So it would be something like:
from django.db import transaction
#transaction.commit_manually
def viewfunc(request):
...
for item in items:
entry = Entry(a1=item.a1, a2=item.a2)
entry.save()
transaction.commit()
Which will only commit once, instead at each save().
In django 1.3 context managers were introduced.
So now you can use transaction.commit_on_success() in a similar way:
from django.db import transaction
def viewfunc(request):
...
with transaction.commit_on_success():
for item in items:
entry = Entry(a1=item.a1, a2=item.a2)
entry.save()
In django 1.4, bulk_create was added, allowing you to create lists of your model objects and then commit them all at once.
NOTE the save method will not be called when using bulk create.
>>> Entry.objects.bulk_create([
... Entry(headline="Django 1.0 Released"),
... Entry(headline="Django 1.1 Announced"),
... Entry(headline="Breaking: Django is awesome")
... ])
In django 1.6, transaction.atomic was introduced, intended to replace now legacy functions commit_on_success and commit_manually.
from the django documentation on atomic:
atomic is usable both as a decorator:
from django.db import transaction
#transaction.atomic
def viewfunc(request):
# This code executes inside a transaction.
do_stuff()
and as a context manager:
from django.db import transaction
def viewfunc(request):
# This code executes in autocommit mode (Django's default).
do_stuff()
with transaction.atomic():
# This code executes inside a transaction.
do_more_stuff()
Bulk creation is available in Django 1.4:
https://django.readthedocs.io/en/1.4/ref/models/querysets.html#bulk-create
Have a look at this. It's meant for use out-of-the-box with MySQL only, but there are pointers on what to do for other databases.
You might be better off bulk-loading the items - prepare a file and use a bulk load tool. This will be vastly more efficient than 8000 individual inserts.
To answer the question particularly with regard to SQLite, as asked, while I have just now confirmed that bulk_create does provide a tremendous speedup there is a limitation with SQLite: "The default is to create all objects in one batch, except for SQLite where the default is such that at maximum 999 variables per query is used."
The quoted stuff is from the docs--- A-IV provided a link.
What I have to add is that this djangosnippets entry by alpar also seems to be working for me. It's a little wrapper that breaks the big batch that you want to process into smaller batches, managing the 999 variables limit.
You should check out DSE. I wrote DSE to solve these kinds of problems ( massive insert or updates ). Using the django orm is a dead-end, you got to do it in plain SQL and DSE takes care of much of that for you.
Thomas
def order(request):
if request.method=="GET":
cust_name = request.GET.get('cust_name', '')
cust_cont = request.GET.get('cust_cont', '')
pincode = request.GET.get('pincode', '')
city_name = request.GET.get('city_name', '')
state = request.GET.get('state', '')
contry = request.GET.get('contry', '')
gender = request.GET.get('gender', '')
paid_amt = request.GET.get('paid_amt', '')
due_amt = request.GET.get('due_amt', '')
order_date = request.GET.get('order_date', '')
print(order_date)
prod_name = request.GET.getlist('prod_name[]', '')
prod_qty = request.GET.getlist('prod_qty[]', '')
prod_price = request.GET.getlist('prod_price[]', '')
print(prod_name)
print(prod_qty)
print(prod_price)
# insert customer information into customer table
try:
# Insert Data into customer table
cust_tab = Customer(customer_name=cust_name, customer_contact=cust_cont, gender=gender, city_name=city_name, pincode=pincode, state_name=state, contry_name=contry)
cust_tab.save()
# Retrive Id from customer table
custo_id = Customer.objects.values_list('customer_id').last() #It is return
Tuple as result from Queryset
custo_id = int(custo_id[0]) #It is convert the Tuple in INT
# Insert Data into Order table
order_tab = Orders(order_date=order_date, paid_amt=paid_amt, due_amt=due_amt, customer_id=custo_id)
order_tab.save()
# Insert Data into Products table
# insert multiple data at a one time from djanog using while loop
i=0
while(i<len(prod_name)):
p_n = prod_name[i]
p_q = prod_qty[i]
p_p = prod_price[i]
# this is checking the variable, if variable is null so fill the varable value in database
if p_n != "" and p_q != "" and p_p != "":
prod_tab = Products(product_name=p_n, product_qty=p_q, product_price=p_p, customer_id=custo_id)
prod_tab.save()
i=i+1
I recommend using plain SQL (not ORM) you can insert multiple rows with a single insert:
insert into A select from B;
The select from B portion of your sql could be as complicated as you want it to get as long as the results match the columns in table A and there are no constraint conflicts.
def order(request):
if request.method=="GET":
# get the value from html page
cust_name = request.GET.get('cust_name', '')
cust_cont = request.GET.get('cust_cont', '')
pincode = request.GET.get('pincode', '')
city_name = request.GET.get('city_name', '')
state = request.GET.get('state', '')
contry = request.GET.get('contry', '')
gender = request.GET.get('gender', '')
paid_amt = request.GET.get('paid_amt', '')
due_amt = request.GET.get('due_amt', '')
order_date = request.GET.get('order_date', '')
prod_name = request.GET.getlist('prod_name[]', '')
prod_qty = request.GET.getlist('prod_qty[]', '')
prod_price = request.GET.getlist('prod_price[]', '')
# insert customer information into customer table
try:
# Insert Data into customer table
cust_tab = Customer(customer_name=cust_name, customer_contact=cust_cont, gender=gender, city_name=city_name, pincode=pincode, state_name=state, contry_name=contry)
cust_tab.save()
# Retrive Id from customer table
custo_id = Customer.objects.values_list('customer_id').last() #It is return Tuple as result from Queryset
custo_id = int(custo_id[0]) #It is convert the Tuple in INT
# Insert Data into Order table
order_tab = Orders(order_date=order_date, paid_amt=paid_amt, due_amt=due_amt, customer_id=custo_id)
order_tab.save()
# Insert Data into Products table
# insert multiple data at a one time from djanog using while loop
i=0
while(i<len(prod_name)):
p_n = prod_name[i]
p_q = prod_qty[i]
p_p = prod_price[i]
# this is checking the variable, if variable is null so fill the varable value in database
if p_n != "" and p_q != "" and p_p != "":
prod_tab = Products(product_name=p_n, product_qty=p_q, product_price=p_p, customer_id=custo_id)
prod_tab.save()
i=i+1
return HttpResponse('Your Record Has been Saved')
except Exception as e:
return HttpResponse(e)
return render(request, 'invoice_system/order.html')

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