Set value variable from Textfield

[bobwatcherx]

how to set variable value in Textfield
example in flutter

Textfield(
controller: first_name,
........
)

how to in Flet
example

name = ""
Textfield(
value=name
...
)

is not work

[ndonkoHenri]

Have a look at examples from the docs: https://flet.dev/docs/controls/textfield

If you don't still understand how it works, then provide the full not-working code sample, so we could understand the issue and help you out. 🙂

[bobwatcherx]

Have a look at examples from the docs: https://flet.dev/docs/controls/textfield

If you don't still understand how it works, then provide the full not-working code sample, so we could understand the issue and help you out. slightly_smiling_face

this code is not work

import flet
from flet import *
from flet import colors

def main(page:Page):
	name = ""
	page.add(
			Textfield(
			value=name
			label="new name"
			)

		)

flet.app(target=main,)

error log is

SyntaxError: invalid syntax. Perhaps you forgot a comma?
  File "/home/ubuntux/belajar/fletapp/app2/main.py", line 9
    value=name
          ^^^^

i wan to set value textfield is name

[ndonkoHenri]

It is stated clearly on your console log: you forgot a comma. Just after value=name.

Textfield(
	value=name ,
	label="new name"
)

Let me know if it works now.

[bobwatcherx]

its work ,
but i have problem . why listview canot append from string
here example code :

import flet
from flet import TextField,Page,Column,ListView

def main(page:Page):
	name = ""
	lv = ListView(auto_scroll=True,padding=10)


	def addtask(e):
		lv.controls.append(name)
		print(lv)
		page.update()


	page.add(
		Column([
			TextField(value=name,label="nice",
				on_submit=addtask
				),
			lv
			])


		)
flet.app(target=main)

and the script below also doesn't work

import flet
from flet import TextField,Page,Column,ListView

def main(page:Page):
	lv = ListView(auto_scroll=True,padding=10)

	def addtask(e):
		lv.controls.append(txt_name.value)
		print(lv)
		page.update()

	txt_name = TextField(label="bego",on_submit=addtask)

	page.add(
		Column([
			txt_name,
			lv
			])


		)
flet.app(target=main)

error logs
AttributeError: 'str' object has no attribute '_build_add_commands'

i want to push textfield value to listview and display it to screen under textfield widget
thanks

[ndonkoHenri]

ListView takes only Controls. You are trying to pass/force in a string, and hence got that error.

You have to wrap/put your string value in a Text control. 👇

lv.controls.append(Text(txt_name.value))

Let me know if it works now.

[bobwatcherx]

yes work thx
now , i wan to add button edit and delete beside listview
can you give example

import flet
from flet import *
from flet import colors

def main(page:Page):
	page.title = "goblok"
	name = ""
	listdata = ["dqwdqw"]
	
	txt_name = TextField(
	label="add task",
	)

	lv = ListView(expand=1,spacing=1,padding=20,auto_scroll=True)

	def addtask(e):
		lv.controls.append(Text(txt_name.value))
		print(listdata)
		page.update()

	
	page.add(
		AppBar(title=Text("niceede",color=colors.RED,weight="w900",),
			bgcolor=colors.BLUE),
		Column(
			[
			Row([
				ElevatedButton(
				on_click=addtask,
				text="add",
				),
				txt_name,
				],
				alignment="center"
				),
			lv
			]

			)

		)
flet.app(target=main,)

[ndonkoHenri]

Please follow this quick tutorial from the docs on how to Build a ToDo app with Flet.

https://flet.dev/docs/tutorials/python-todo

If after that you still have some issues or stuffs you don't understand, you could then open a discussion, so anyone can help you.

[bobwatcherx]

is property control in listview

for example like this
Listview(control=Array)

so as not to make it like constanta
like this
lv = ListView()

[ndonkoHenri]

Your question is not really clear. But,
ListView has a property named controls which is a list of the controls you wish to add into the ListView.

If you wish, you could add the ListView to a variable like this:
lv=ListView()

Or use Refs: https://flet.dev/blog/control-refs/

Hope I answered your question.