如何使用相同的表单代码进行添加、更新
How to use same form code for add,update
test.kv
:基维 1.10.0
<CRUD>:
title: self.mode + " State"
size_hint: None, None
size: 350, 350
auto_dismiss: False
BoxLayout:
orientation: "vertical"
GridLayout:
cols: 2
Label:
text: root.label_rec_id
Label:
id: userid
text: root.col_data[0] # root.userid
Label:
text: "First Name"
TextInput:
id: fname
text: root.col_data[1] # root.fname
Label:
text: "Last Name"
TextInput:
id: lname
text: root.col_data[2] # root.lname
Button:
size_hint: 1, 0.4
text: "Save Changes"
on_release:
root.package_changes(fname.text, lname.text)
app.root.update_changes(root)
root.dismiss()
Button:
size_hint: 1, 0.4
text: "Cancel Changes"
on_release: root.dismiss()
- 点击任意行然后编辑表单 open.Can 我使用相同的表单添加用户。
此时我点击添加用户，然后点击 user.py 文件 运行 并打开一个新的 form.how 以使用相同的表格进行添加更新。
是的，您可以使用相同的表格添加城市。在示例中，我添加了一个按钮、一个方法 add_record、一些变量，例如StringProperty 类型的模式和 INSERT SQL 命令。具体请参考示例
例子
main.py
import kivy
kivy.require('1.10.0') # replace with your current kivy version !
import sqlite3 as lite
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import BooleanProperty, ListProperty, StringProperty, ObjectProperty, NumericProperty
from kivy.lang import Builder
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.button import Button
from kivy.uix.recyclegridlayout import RecycleGridLayout
from kivy.uix.behaviors import FocusBehavior
from kivy.uix.recycleview.layout import LayoutSelectionBehavior
from kivy.uix.popup import Popup
from kivy.core.window import Window
Window.size = (500, 500)
MAX_TABLE_COLS = 3
con = lite.connect('company.db')
# con.text_factory = str
cur = con.cursor()
class CRUD(Popup):
"""CRUD - Create, Read, Update, Delete"""
label_id_text = ObjectProperty(None)
label_id_data = ObjectProperty(None)
mode = StringProperty("")
label_rec_id = StringProperty("UserID")
start_point = NumericProperty(0)
col_data = ListProperty(["", "", ""])
def __init__(self, obj, **kwargs):
super(CRUD, self).__init__(**kwargs)
self.mode = obj.mode
if obj.mode == "Add":
self.label_id_text.opacity = 0 # invisible
self.label_id_data.opacity = 0 # invisible
else:
self.label_id_text.opacity = 1 # visible
self.label_id_data.opacity = 1 # visible
self.start_point = obj.start_point
self.col_data[0] = obj.rv_data[obj.start_point]["text"]
self.col_data[1] = obj.rv_data[obj.start_point + 1]["text"]
self.col_data[2] = obj.rv_data[obj.start_point + 2]["text"]
def package_changes(self, fname, lname):
self.col_data[1] = fname
self.col_data[2] = lname
class SelectableRecycleGridLayout(FocusBehavior, LayoutSelectionBehavior,
RecycleGridLayout):
''' Adds selection and focus behaviour to the view. '''
class SelectableButton(RecycleDataViewBehavior, Button):
''' Add selection support to the Button '''
index = None
selected = BooleanProperty(False)
selectable = BooleanProperty(True)
rv_data = ObjectProperty(None)
start_point = NumericProperty(0)
mode = StringProperty("")
def refresh_view_attrs(self, rv, index, data):
''' Catch and handle the view changes '''
self.index = index
return super(SelectableButton, self).refresh_view_attrs(rv, index, data)
def on_touch_down(self, touch):
''' Add selection on touch down '''
if super(SelectableButton, self).on_touch_down(touch):
return True
if self.collide_point(*touch.pos) and self.selectable:
return self.parent.select_with_touch(self.index, touch)
def apply_selection(self, rv, index, is_selected):
''' Respond to the selection of items in the view. '''
self.selected = is_selected
self.rv_data = rv.data
def on_press(self):
self.mode = "Update"
self.start_point = 0
end_point = MAX_TABLE_COLS
rows = len(self.rv_data) // MAX_TABLE_COLS
for row in range(rows):
if self.index in list(range(end_point)):
break
self.start_point += MAX_TABLE_COLS
end_point += MAX_TABLE_COLS
popup = CRUD(self)
popup.open()
class RV(BoxLayout):
rv_data = ListProperty([])
start_point = NumericProperty(0)
mode = StringProperty("")
def __init__(self, **kwargs):
super(RV, self).__init__(**kwargs)
self.get_users()
def get_users(self):
'''This result retrieve from database'''
self.rv_data = []
cur.execute("SELECT * FROM Users ORDER BY UserID ASC")
rows = cur.fetchall()
# create data_items
for row in rows:
for col in row:
self.rv_data.append(col)
def add_record(self):
self.mode = "Add"
popup = CRUD(self)
popup.open()
def update_changes(self, obj):
if obj.mode == "Add":
# insert record into Database Table
cur.execute("INSERT INTO Users VALUES(NULL, ?, ?)",
(obj.col_data[1], obj.col_data[2]))
else:
# update Database Table
cur.execute("UPDATE Users SET FirstName=?, LastName=? WHERE UserID=?",
(obj.col_data[1], obj.col_data[2], obj.col_data[0]))
con.commit()
self.get_users()
class ListUser(App):
title = "Users"
def build(self):
self.root = Builder.load_file('main.kv')
return RV()
if __name__ == '__main__':
ListUser().run()
main.kv
#:kivy 1.10.0
<CRUD>:
label_id_text: label_id_text
label_id_data: label_id_data
title: self.mode + " State"
size_hint: None, None
size: 350, 350
auto_dismiss: False
BoxLayout:
orientation: "vertical"
GridLayout:
cols: 2
Label:
id: label_id_text
text: "ID"
Label:
id: label_id_data
text: root.col_data[0] # root.userid
Label:
text: "First Name"
TextInput:
id: fname
text: root.col_data[1] # root.fname
Label:
text: "Last Name"
TextInput:
id: lname
text: root.col_data[2] # root.lname
Button:
size_hint: 1, 0.4
text: "Confirm " + root.mode
on_release:
root.package_changes(fname.text, lname.text)
app.root.update_changes(root)
root.dismiss()
Button:
size_hint: 1, 0.4
text: "Cancel " + root.mode
on_release: root.dismiss()
<SelectableButton>:
# Draw a background to indicate selection
canvas.before:
Color:
rgba: (.0, 0.9, .1, .3) if self.selected else (0, 0, 0, 1)
Rectangle:
pos: self.pos
size: self.size
<RV>:
BoxLayout:
orientation: "vertical"
Button:
size_hint: 1, 0.1
text: "Add Record"
on_press: root.add_record()
GridLayout:
size_hint: 1, None
size_hint_y: None
height: 25
cols: 3
Label:
text: "ID"
Label:
text: "First Name"
Label:
text: "Last Name"
BoxLayout:
RecycleView:
viewclass: 'SelectableButton'
data: [{'text': str(x)} for x in root.rv_data]
SelectableRecycleGridLayout:
cols: 3
default_size: None, dp(26)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: True
touch_multiselect: True
输出
test.kv
:基维 1.10.0
<CRUD>:
title: self.mode + " State"
size_hint: None, None
size: 350, 350
auto_dismiss: False
BoxLayout:
orientation: "vertical"
GridLayout:
cols: 2
Label:
text: root.label_rec_id
Label:
id: userid
text: root.col_data[0] # root.userid
Label:
text: "First Name"
TextInput:
id: fname
text: root.col_data[1] # root.fname
Label:
text: "Last Name"
TextInput:
id: lname
text: root.col_data[2] # root.lname
Button:
size_hint: 1, 0.4
text: "Save Changes"
on_release:
root.package_changes(fname.text, lname.text)
app.root.update_changes(root)
root.dismiss()
Button:
size_hint: 1, 0.4
text: "Cancel Changes"
on_release: root.dismiss()
- 点击任意行然后编辑表单 open.Can 我使用相同的表单添加用户。
此时我点击添加用户，然后点击 user.py 文件 运行 并打开一个新的 form.how 以使用相同的表格进行添加更新。
是的，您可以使用相同的表格添加城市。在示例中，我添加了一个按钮、一个方法 add_record、一些变量，例如StringProperty 类型的模式和 INSERT SQL 命令。具体请参考示例
例子
main.py
import kivy
kivy.require('1.10.0') # replace with your current kivy version !
import sqlite3 as lite
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import BooleanProperty, ListProperty, StringProperty, ObjectProperty, NumericProperty
from kivy.lang import Builder
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.button import Button
from kivy.uix.recyclegridlayout import RecycleGridLayout
from kivy.uix.behaviors import FocusBehavior
from kivy.uix.recycleview.layout import LayoutSelectionBehavior
from kivy.uix.popup import Popup
from kivy.core.window import Window
Window.size = (500, 500)
MAX_TABLE_COLS = 3
con = lite.connect('company.db')
# con.text_factory = str
cur = con.cursor()
class CRUD(Popup):
"""CRUD - Create, Read, Update, Delete"""
label_id_text = ObjectProperty(None)
label_id_data = ObjectProperty(None)
mode = StringProperty("")
label_rec_id = StringProperty("UserID")
start_point = NumericProperty(0)
col_data = ListProperty(["", "", ""])
def __init__(self, obj, **kwargs):
super(CRUD, self).__init__(**kwargs)
self.mode = obj.mode
if obj.mode == "Add":
self.label_id_text.opacity = 0 # invisible
self.label_id_data.opacity = 0 # invisible
else:
self.label_id_text.opacity = 1 # visible
self.label_id_data.opacity = 1 # visible
self.start_point = obj.start_point
self.col_data[0] = obj.rv_data[obj.start_point]["text"]
self.col_data[1] = obj.rv_data[obj.start_point + 1]["text"]
self.col_data[2] = obj.rv_data[obj.start_point + 2]["text"]
def package_changes(self, fname, lname):
self.col_data[1] = fname
self.col_data[2] = lname
class SelectableRecycleGridLayout(FocusBehavior, LayoutSelectionBehavior,
RecycleGridLayout):
''' Adds selection and focus behaviour to the view. '''
class SelectableButton(RecycleDataViewBehavior, Button):
''' Add selection support to the Button '''
index = None
selected = BooleanProperty(False)
selectable = BooleanProperty(True)
rv_data = ObjectProperty(None)
start_point = NumericProperty(0)
mode = StringProperty("")
def refresh_view_attrs(self, rv, index, data):
''' Catch and handle the view changes '''
self.index = index
return super(SelectableButton, self).refresh_view_attrs(rv, index, data)
def on_touch_down(self, touch):
''' Add selection on touch down '''
if super(SelectableButton, self).on_touch_down(touch):
return True
if self.collide_point(*touch.pos) and self.selectable:
return self.parent.select_with_touch(self.index, touch)
def apply_selection(self, rv, index, is_selected):
''' Respond to the selection of items in the view. '''
self.selected = is_selected
self.rv_data = rv.data
def on_press(self):
self.mode = "Update"
self.start_point = 0
end_point = MAX_TABLE_COLS
rows = len(self.rv_data) // MAX_TABLE_COLS
for row in range(rows):
if self.index in list(range(end_point)):
break
self.start_point += MAX_TABLE_COLS
end_point += MAX_TABLE_COLS
popup = CRUD(self)
popup.open()
class RV(BoxLayout):
rv_data = ListProperty([])
start_point = NumericProperty(0)
mode = StringProperty("")
def __init__(self, **kwargs):
super(RV, self).__init__(**kwargs)
self.get_users()
def get_users(self):
'''This result retrieve from database'''
self.rv_data = []
cur.execute("SELECT * FROM Users ORDER BY UserID ASC")
rows = cur.fetchall()
# create data_items
for row in rows:
for col in row:
self.rv_data.append(col)
def add_record(self):
self.mode = "Add"
popup = CRUD(self)
popup.open()
def update_changes(self, obj):
if obj.mode == "Add":
# insert record into Database Table
cur.execute("INSERT INTO Users VALUES(NULL, ?, ?)",
(obj.col_data[1], obj.col_data[2]))
else:
# update Database Table
cur.execute("UPDATE Users SET FirstName=?, LastName=? WHERE UserID=?",
(obj.col_data[1], obj.col_data[2], obj.col_data[0]))
con.commit()
self.get_users()
class ListUser(App):
title = "Users"
def build(self):
self.root = Builder.load_file('main.kv')
return RV()
if __name__ == '__main__':
ListUser().run()
main.kv
#:kivy 1.10.0
<CRUD>:
label_id_text: label_id_text
label_id_data: label_id_data
title: self.mode + " State"
size_hint: None, None
size: 350, 350
auto_dismiss: False
BoxLayout:
orientation: "vertical"
GridLayout:
cols: 2
Label:
id: label_id_text
text: "ID"
Label:
id: label_id_data
text: root.col_data[0] # root.userid
Label:
text: "First Name"
TextInput:
id: fname
text: root.col_data[1] # root.fname
Label:
text: "Last Name"
TextInput:
id: lname
text: root.col_data[2] # root.lname
Button:
size_hint: 1, 0.4
text: "Confirm " + root.mode
on_release:
root.package_changes(fname.text, lname.text)
app.root.update_changes(root)
root.dismiss()
Button:
size_hint: 1, 0.4
text: "Cancel " + root.mode
on_release: root.dismiss()
<SelectableButton>:
# Draw a background to indicate selection
canvas.before:
Color:
rgba: (.0, 0.9, .1, .3) if self.selected else (0, 0, 0, 1)
Rectangle:
pos: self.pos
size: self.size
<RV>:
BoxLayout:
orientation: "vertical"
Button:
size_hint: 1, 0.1
text: "Add Record"
on_press: root.add_record()
GridLayout:
size_hint: 1, None
size_hint_y: None
height: 25
cols: 3
Label:
text: "ID"
Label:
text: "First Name"
Label:
text: "Last Name"
BoxLayout:
RecycleView:
viewclass: 'SelectableButton'
data: [{'text': str(x)} for x in root.rv_data]
SelectableRecycleGridLayout:
cols: 3
default_size: None, dp(26)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: True
touch_multiselect: True