如何直接访问树视图中的下一列以插入数据

Question

我已经设置了一个树视图来显示我的sqlite数据库中的数据。我能够用查询填充第一列，现在我需要用不同的查询填充其他列。

    # Top Container
    top_frame = ttk.Frame()
    top_frame.grid(column=0, row=0)
    # create a treeview with dual scrollbars
    list_header = ['First', 'Second', 'Third']
    self.tree = ttk.Treeview(columns=list_header, show="headings")
    vsb = ttk.Scrollbar(orient="vertical",
                        command=self.tree.yview)
    hsb = ttk.Scrollbar(orient="horizontal",
                        command=self.tree.xview)
    self.tree.configure(yscrollcommand=vsb.set,
                        xscrollcommand=hsb.set)
    self.tree.grid(column=0, row=0, sticky=(N, S, E, W), in_=top_frame)
    vsb.grid(column=1, row=0, sticky=(N, S), in_=top_frame)
    hsb.grid(column=0, row=1, sticky=(E, W), in_=top_frame)

    # Display the headers
    for col in list_header:
        self.tree.heading(col, text=col.title(), command=lambda c=col: sortby(self.tree, c, 0))
        # adjust the column's width to the header string
        self.tree.column(col)

    # Display the data
    query = ProjectNumber.select()

    for item in query:
        self.tree.insert('', 'end', values=item.project_num)

how can i access the next column and fill it with a separate query?

Answer 1

如果我明白了，下面你可以看到你想做的一个有效的例子。

这个例子是用oo方法写的。

启动脚本后单击“加载”按钮，您将看到填充的树视图

模拟记录集的数据，元组列表。尝试点击后的项目

树视图，看看会发生什么。我添加了偶数点击和双击事件回调。

数据代表意大利面食。

import tkinter as tk
from tkinter import ttk

class App(tk.Frame):

    def __init__(self,):

        super().__init__()

        self.master.title("Hello World")

        self.init_ui()

    def init_ui(self):

        f = tk.Frame()

        tk.Label(f, text = "Buon Appetito").pack()
        cols = (["#0",'','w',False,200,200],
                 ["#1",'','w',True,0,0],)

        self.Pasta = self.get_tree(f, cols, show="tree")
        self.Pasta.show="tree"
        self.Pasta.pack(fill=tk.BOTH, padx=2, pady=2)
        self.Pasta.bind("<<TreeviewSelect>>", self.on_selected)
        self.Pasta.bind("<Double-1>", self.on_double_click)

        w = tk.Frame()

        tk.Button(w, text="Load", command=self.set_values).pack()
        tk.Button(w, text="Close", command=self.on_close).pack()

        w.pack(side=tk.RIGHT, fill=tk.BOTH, expand=0)
        f.pack(side=tk.LEFT, fill=tk.BOTH, expand=0)

    def set_values(self,):

        #.insert(parent, index, iid=None, **kw)
        rs = [(0,'Spaghetti'),(1,'Rigatoni'),(2,'Pennette')]

        for i in rs:
            #print(i)
            pasta = self.Pasta.insert("", i[0], text=i[1], values=(i[0],'pasta'))
            rs_dishes = self.load_dishes(i[0])
            if rs_dishes is not None:
                for dish in rs_dishes:
                    #print(dish)
                    wards = self.Pasta.insert(pasta, dish[0],text=dish[1], values=(dish[0],'dishes'))


    def load_dishes(self, i):

        rs = [(0,'Spaghetti aglio e olio'),
              (1,'Rigatoni alla matriciana'),
              (1,'Rigatoni al pesto'),
              (1,'Rigatoni alla norma'),
              (2,'Pennette al pesto'),
              (2,'Pennette alla wodka'),
              (2,'Pennette al tartufo'),
              (0,'Spaghetti allo scoglio'),
              (0,'Spaghetti al pesto'),
              (0,'Spaghetti alla carbonara'),
              (0,'Spaghetti alla puttanesca')]

        r = [x for x in rs if x[0] == i]

        return r

    def on_selected(self, evt=None):

        selected_item = self.Pasta.focus()

        d = self.Pasta.item(selected_item)

        if d['values']:
            if d['values'][1]=='dishes':

                pk = d['values'][0]

                print("pk: {}".format(pk))


    def on_double_click(self, evt=None):

        if self.Pasta.focus():
            item_iid = self.Pasta.selection()    
            pk = self.Pasta.item(self.Pasta.focus())['text']

            print(item_iid, pk)


    def get_tree(self,container, cols, size=None, show=None):

        headers = []

        for col in cols:
            headers.append(col[1])
        del headers[0]

        if show is not None:
            w = ttk.Treeview(container,show=show)
        else:
            w = ttk.Treeview(container,)

        w['columns']=headers

        for col in cols:
            w.heading(col[0], text=col[1], anchor=col[2],)
            w.column(col[0], anchor=col[2], stretch=col[3],minwidth=col[4], width=col[5])

        sb = ttk.Scrollbar(container)
        sb.configure(command=w.yview)
        w.configure(yscrollcommand=sb.set)

        w.pack(side=tk.LEFT, fill=tk.BOTH, expand =1)
        sb.pack(fill=tk.Y, expand=1)

        return w

    def on_close(self):
        self.master.destroy()

if __name__ == '__main__':
    app = App()
    app.mainloop()