how to trace user position

[moeinrahimi]

hi
i want to know how can i trace user position in the chat via my bot.
my bot have several keyboard i want to add a back button for each keyboard .
but i don't know how to do that

[Eleirbag89]

You need someway ti store the state of a chat, like a database.
Everytime you send a new keyboard, you write it down on the db and when you receive a "back button press" check on the db what the current keyboard is and send the previous one (updating the db accordingly).

[moeinrahimi]

ok thank you for your guidance , just something else : i don't know what part
of the data need to use in database

On May 28 2016, at 11:52 am, Gabriele Grillo <notifications@github.com>
wrote:

You need someway ti store the state of a chat, like a database.
Everytime you send a new keyboard, you write it down on the db and when you
receive a "back button press" check on the db what the current keyboard is and
send the previous one (updating the db accordingly).

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[Eleirbag89]

Well, there are many ways.
Let's say you have 2 different keyboards, one shows the options A and B and the other one Back and C.
We call the first keyboard ONE and the second TWO.
So when you send the keyboard ONE you write 1 on the database. You send other stuff to the user and finally send the keyboard TWO. Now you write TWO on the database. When the user click Back, check the db, you'll find TWO and you know that the keyboard to show from TWO is ONE.
Pseudo:

if (user_choosed_button() == "Back") {
      $prev_key = take_previuos_keyboard_from_db();
      if ($prev_key == "TWO") {
               sendKeyboardONE();
      }
      if ($prev_key == "THREE") {
               sendKeyboardTWO();
      }
}

It's simple but a little messy if you have a lot of different keyboards to show, but it's a starting point.

[Amir199]

can you write a source code ? :(
i need it ...

[Eleirbag89]

It's not a function of the Telegram's Bot API, so I'll not write a source code :-)

[dade80vr]

Hi @Eleirbag89 .
What do you mean with when you receive a "back button press" ??
Thanks