I have been working on creating an app to help some of our office workers.I have somewhat of a skeleton working but my problem is I can't get my windows to update their values after the initialization of them.
I have global variables along with some get and set functions:
building = "SomeBuilding"
def setBuilding(bldg):
global building
building = bldg
print("building:", building)
def getBuilding():
print("Building from get:",building)
return building
And I have a class which is used to create the app and the frames:
class App(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
container.pack(side="top", fill="both", expand = True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
for F in (StartPage, PageOne,PageTwo):
frame = F(container, self)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(StartPage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.update()
frame.tkraise()
The problem comes in when I take some values from a frame and store them in the global variable. The global variable gets updated but when moving to the next frame I have a label which displays the value of the global variable. This happens to be the value the global variable was initially.
class PageOne(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
#buidling
bldg_label = ttk.Label(self, text="Building Name (ie. Bldg1):", font=LARGE_FONT)
bldg_label.grid(row=0, column=0, padx=2, pady = 10)
self.bldg_var = tk.StringVar()
bldg_entry =ttk.Entry(self,width = 6, textvariable = self.bldg_var)
bldg_entry.grid(row=0, column=1, padx=2, pady=10)
Within this class I have a button that sets the values of the building entry
button2 = ttk.Button(self, text="Apply",command=lambda: setBuilding(self.bldg_var.get()))
button2.grid(row=row_num, column = 1)
and a button to go to the next frame:
button3 = ttk.Button(self, text="next", command = lambda: controller.show_frame(PageTwo))
When PageTwo is then raised it prints out the building label with the old value "SomeBuilding" instead of what the user submitted. I tried as you can see calling the global variable and then printing it out in hopes of getting the value but only get the same old value, I also tried using an update but it doesn't work. Any help would be greatly appreciated. I've looked online for examples but they only go over a single page or frame but not updating across frames. Thank you!
class PageTwo(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
row_num = 0
global building
used_building = building
bldg_label = ttk.Label(self, text = "Building: " + used_building, font=LARGE_FONT)
bldg_label.grid(row = row_num, column =0)
