如何识别 ttk.Treeview 从中加载数据的 sqlite 数据库 table 的名称？

Question

我有一个 tkinter 应用程序是用 python3 编写的。它有一个主要 tk.Frame。使用 for 循环，我在那里构建了两个 ttk.LabelFrame，然后每一帧都得到它的 ttk.Treeview。这些树视图中的每一个都从不同的 table（名为 aliens1 和 aliens2）加载其数据：

class Application:
    def __init__(self, master):
        self.master = master
        
        self.database = Database(self.master, self)
        self.turns_frame = TurnsFrame(self.master, self)

class TurnsFrame:
    def __init__(self, master, app):
        self.master = master
        self.app = app
        self.frame = tk.Frame(self.master, bd=2)
        
        # Create LabelFrames and their Treeviews
        for i in range(3):
            ap_frame = tk.LabelFrame(self.frame, text="Alien Player {}".format(str(i+1)))
            ap_frame.grid(row=0, column=i)

            tv = tk.ttk.Treeview(ap_frame,
                                 columns=tuple(range(1, 12)),
                                 show="headings",
                                 height=30)
            tv.pack()

            ... creating columns ...

            # Create rows
            with self.app.database.db:
                self.app.database.cursor.execute("SELECT turn, econ_rolls, econ_rolls_extra, cp_fleet, "
                                             "cp_tech, cp_def, fleet_launch, roll_econ, roll_fleet, "
                                             "roll_tech, roll_def FROM aliens{}".format(str(i+1)))
                rows = self.app.database.cursor.fetchall()

                for r in rows:
                    tv.insert("", "end", values=r)

            # Bind row double-click
            tv.bind("<Double-1>", self.get_turn_number)

    def get_turn_number(self, event):
        item_id = event.widget.focus()
        item = event.widget.item(item_id)
        values = item["values"]
        turn_id = values[0]

        print("Turn: ", turn_id)
        return turn_id

class Database:
    def __init__(self, master, app):
        self.master = master
        self.app = app
        self.folder = os.path.dirname(os.path.abspath(__file__))

        self.db = self.create_connection(self.folder)
        self.cursor = self.db.cursor()

    def create_connection(self, f):
        db = None
        try:
            db = sqlite3.connect(os.path.join(f, "aliens.db"))
        except sqlite3.Error as e:
            print(e)

        return db

    def initialize_tables(self, nr):
    # SOME OTHER FRAME CALLS THIS FUNCTION AND GIVES THE VARIABLE 'nr'
        with self.db:
            for i in range(1, nr+1):
                # print("Creating table aliens{}".format(str(i)))
                self.cursor.execute("CREATE TABLE aliens{}(".format(i) +
                                    "turn INTEGER PRIMARY KEY,"
                                    "econ_rolls INTEGER,"
                                    "econ_rolls_extra INTEGER,"
                                    "cp_fleet INTEGER,"
                                    "cp_tech INTEGER,"
                                    "cp_def INTEGER,"
                                    "fleet_launch STRING,"
                                    "roll_econ STRING,"
                                    "roll_fleet STRING,"
                                    "roll_tech STRING,"
                                    "roll_def STRING)")

def main():
    root = tk.Tk()
    main_app = Application(root)
    root.mainloop()

if __name__ == "__main__":
    main()

它看起来不错，工作正常，看起来像这样 application.

现在我可以双击任何行并执行 self.get_turn_number。伟大的。为了进一步的工作，我需要获取数据库 table 从中加载行的名称（取决于我双击的树视图 - 第一个 Alien player 1 或第二个外星玩家 2)。外星玩家 1 从 table alien1 加载数据，玩家 2 从 aliens2.

加载数据

我搜索了文档，但在 ttk.Treeview 中没有发现任何相关内容。似乎以前没有人遇到过这个问题。有办法实现吗？

Answer 1

好吧，我刚注意到你在 for 循环。您可以做的是将数字传递给函数，然后运行将其输出，例如：

.... # Same code
    tv.bind("<Double-1>", lambda e,num=i: self.calculate_econ_phase(num)

def calculate_econ_phase(self,num):
    print(f'Alien{num}')

作为答案发布，因为评论太长了。

如何识别 ttk.Treeview 从中加载数据的 sqlite 数据库 table 的名称？

How to identify the name of sqlite database table which ttk.Treeview loads data from?

python-3.x

sqlite

for-loop

treeview

ttk