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Table / Pagination / Filter

Use a table with pagination to display large (100k+ rows) tabular data and allow filtering along the way.

from h2o_wave import main, app, Q, ui

class Issue:
def __init__(self, text: str, status: str):
self.text = text
self.status = status

issues = [Issue(str(i), 'Open' if i % 2 == 0 else 'Closed') for i in range(100)]
rows_per_page = 10

async def serve(q: Q):
if not q.client.initialized:['form'] = ui.form_card(box='1 1 -1 -1', items=[
ui.table_column(name='text', label='Text', link=False),
ui.table_column(name='status', label='Status', filterable=True, filters=['Open', 'Closed']),
rows=[ui.table_row(name=i.text, cells=[i.text, i.status]) for i in issues[0:rows_per_page]],
pagination=ui.table_pagination(total_rows=len(issues), rows_per_page=rows_per_page),
events=['page_change', 'filter']
q.client.initialized = True

offset = 0
filtered = None
active_filter = or q.client.filter
if active_filter:
q.client.filter = active_filter
for col, filters in active_filter.items():
filtered = [i for i in issues if not filters or any(f in getattr(i, col) for f in filters)]
offset ='offset', 0)

next_issues = filtered[offset:offset + rows_per_page] if filtered else issues[offset:offset + rows_per_page]

table =['form'].table
table.rows = [ui.table_row(name=i.text, cells=[i.text, i.status]) for i in next_issues]
table.pagination = ui.table_pagination(len(filtered) if filtered else len(issues), rows_per_page)


Tags:  filterformpaginationtable