Barcode Reader Firebase Upload

[buddhikakgsl]

මේ පලවෙනි code එකේ තියෙන්නෙ barcode reader එකකින් barcode read කරන්න. දෙවෙනි එකෙන් read කරපු barcode එක firebase realtime database එකට send වෙන්න.
පලවෙනි program එකෙන් දෙවෙනි program එකට dataimport කරල firebase එකට send කරනන් හැදුවට කරන්න බැ. හැබැයි data import karala කරල printවෙනවත් එක්ක.
එකෙ databse settings එහෙමත් හරි. ඇයි මේක barcode readings firebase ekata send වෙන්නෙ නැත්තෙ

Code Number 01

import sys

def barcode_reader():
    hid = {4: 'a', 5: 'b', 6: 'c', 7: 'd', 8: 'e', 9: 'f', 10: 'g', 11: 'h', 12: 'i', 13: 'j', 14: 'k', 15: 'l', 16: 'm',
           17: 'n', 18: 'o', 19: 'p', 20: 'q', 21: 'r', 22: 's', 23: 't', 24: 'u', 25: 'v', 26: 'w', 27: 'x', 28: 'y',
           29: 'z', 30: '1', 31: '2', 32: '3', 33: '4', 34: '5', 35: '6', 36: '7', 37: '8', 38: '9', 39: '0', 44: ' ',
           45: '-', 46: '=', 47: '[', 48: ']', 49: '\\', 51: ';', 52: '\'', 53: '~', 54: ',', 55: '.', 56: '/'}

    hid2 = {4: 'A', 5: 'B', 6: 'C', 7: 'D', 8: 'E', 9: 'F', 10: 'G', 11: 'H', 12: 'I', 13: 'J', 14: 'K', 15: 'L', 16: 'M',
            17: 'N', 18: 'O', 19: 'P', 20: 'Q', 21: 'R', 22: 'S', 23: 'T', 24: 'U', 25: 'V', 26: 'W', 27: 'X', 28: 'Y',
            29: 'Z', 30: '!', 31: '@', 32: '#', 33: '$', 34: '%', 35: '^', 36: '&', 37: '*', 38: '(', 39: ')', 44: ' ',
            45: '_', 46: '+', 47: '{', 48: '}', 49: '|', 51: ':', 52: '"', 53: '~', 54: '<', 55: '>', 56: '?'}

    fp = open('hidraw0', 'w+')

    ss = ""
    shift = False

    done = False

    while not done:
        # Get the character from the HID
        buffer = fp.read(8)
        for c in buffer:
            if ord(c) > 0:

                #  40 is carriage return which signifies
             
                if int(ord(c)) == 40:
                    done = True
                    break;

               
                #  use the hid2 characters.
                if shift:

                    # If it is a '2' then it is the shift key
                    if int(ord(c)) == 2:
                        shift = True

                    # if not a 2 then lookup the mapping
                    else:
                        ss += hid2[int(ord(c))]
                        shift = False

                #  If not shifted then use
                #  the hid characters

                else:

                    # If it is a '2' then it is the shift key
                    if int(ord(c)) == 2:
                        shift = True

                    # if not a 2 then lookup the mapping
                    else:
                        ss += hid[int(ord(c))]
    return ss
    #print (type(ss))

#a = input("Enter barcode here: ")
#data={'Barcode Code':a}
#db.push(data)


if __name__ == '__main__':
    try:
        while True:
            barcode_reader()

    except KeyboardInterrupt:
        pass

Code Number 02

import pyrebase
from test import barcode_reader()

config = {
      "apiKey": "xxxxxx",
          "authDomain": "xxxxxxx",
            "databaseURL": "xxxxxxx",
            "projectId": "xxxxx",
              "storageBucket": "xxxxx",
              "messagingSenderId": "xxxxxx",
          "appId": "xxxxxx"

};

firebase = pyrebase.initialize_app(config)

storage = firebase.storage()
database = firebase.database()
a = barcode_reader()
print (a)
database.child("DB object name")
data = {"key1": a}
#print (type (a))
database.set(data)

 

[kinkon]

බම්ප්

 

[gdan011]

Mokak da apu error code 1k?

 

[buddhikakgsl]

Mokak da apu error code 1k?

error code ekak enne nae machn. okkoma weda. barcode ekat print wenawa.
ekam de meke barcode eka firebase ekata upload wenne nae

 

[gdan011]

error code ekak enne nae machn. okkoma weda. barcode ekat print wenawa.
ekam de meke barcode eka firebase ekata upload wenne nae

barcode 1k natiwa. normal string 1k pass krla blna.

 

[HAneo]

You try to Access this wrong way i think.
Need to reference the path

ref = database.reference("/app/settings")
ref.set(data )

If you need this under Unique key then use Push().set(data)

 

[buddhikakgsl]

You try to Access this wrong way i think.
Need to reference the path

ref = database.reference("/app/settings")
ref.set(data )

If you need this under Unique key then use Push().set(data)

But with the given code, I can send a string or an integer.
Anyway I will try this as well.

 

[HAneo]

But with the given code, I can send a string or an integer.
Anyway I will try this as well.

No you can send any type of data even if it's Key Value pier . it's the Slandered method to set data to Firebase Realtime Database.
I did this many times with Dart and JS. but for Python it should be the same machan

 

[buddhikakgsl]

You try to Access this wrong way i think.
Need to reference the path

ref = database.reference("/app/settings")
ref.set(data )

If you need this under Unique key then use Push().set(data)

I tried this machn. Now it comes with
AttributeError: 'Database' object has no attribute 'reference'

 

[HAneo]

I tried this machn. Now it comes with
AttributeError: 'Database' object has no attribute 'reference'

Seems like configuration problem
Database object not being initialize properly
And if you not familiar pls ready this note . turn on python tab for the codes
https://firebase.google.com/docs/database/admin/save-data#python


Try this example

# Import database module.
from firebase_admin import db

# Get a database reference to our blog.
ref = db.reference('server/saving-data/fireblog')

users_ref = ref.child('users')
users_ref.set({
    'alanisawesome': {
        'date_of_birth': 'June 23, 1912',
        'full_name': 'Alan Turing'
    },
    'gracehop': {
        'date_of_birth': 'December 9, 1906',
        'full_name': 'Grace Hopper'
    }
})

 

[scorpion MW]

Bump

 

[buddhikakgsl]

Seems like configuration problem
Database object not being initialize properly
And if you not familiar pls ready this note . turn on python tab for the codes
https://firebase.google.com/docs/database/admin/save-data#python


Try this example

# Import database module.
from firebase_admin import db

# Get a database reference to our blog.
ref = db.reference('server/saving-data/fireblog')

users_ref = ref.child('users')
users_ref.set({
    'alanisawesome': {
        'date_of_birth': 'June 23, 1912',
        'full_name': 'Alan Turing'
    },
    'gracehop': {
        'date_of_birth': 'December 9, 1906',
        'full_name': 'Grace Hopper'
    }
})

I tried this method and Firestore as well. No barcode reading values getting uploaded.
this is for Firestore

import firebase_admin
from firebase_admin import credentials
from firebase_admin import firestore
#from test import addition
from barcode import barcode_reader

cred = credentials.Certificate("serviceAccountKey.json")
firebase_admin.initialize_app(cred)
db=firestore.client()
a = barcode_reader()
#print(a)
#b= addition()

ref= db.collection('barcodes').document()
ref.set({"barcode": a})

I cant find any error.

---

bump
------ Post added on May 17, 2022 at 8:42 PM