y_py_ydoc_shared_text_transaction_and_state_sync.py

1import y_py as Y
2
3# Create a Yjs document
4d1 = Y.YDoc()
5# Create a shared text type in the document
6text1 = d1.get_text('common')
7
8# All changes must happen within a transaction
9with d1.begin_transaction() as txn:
10    text1.insert(txn, 0, 'ABC')
11
12# Create another document to represent a remote peer
13d2 = Y.YDoc()
14text2 = d2.get_text('common')
15
16# Synchronize d2 with the state of d1
17# 1. Get the state vector from the target document (d2)
18state_vector = Y.encode_state_vector(d2)
19# 2. Encode the difference from the source document (d1)
20diff = Y.encode_state_as_update(d1, state_vector)
21# 3. Apply the update to the target document
22Y.apply_update(d2, diff)
23
24# The content is now synchronized
25print(str(text2)) # Output: ABC