New to Dash and missing something obvious…
I am saving named groups of datapoints into localStorage for later retrieval/application as filters. The data stored in localStorage (called “dogroups_highlighted_points”) looks like this:
[
{'date':'21-03-31', 'groupName':'First collection name', 'data':['dt001','dt002','dt003']},
{'date':'21-04-03', 'groupName':'Samedi Lundi project', 'data':['dt008','dt014','dt033','dt051','dt079']}
]
The above localStore shows two saved groups, so I now wish to use a dataTable to allow the user to delete from this collection of saved groups.
I understand how to read-in the localStorage file, but not how to send that data to the dataTable. Seems like it should be obvious but I cannot find an example. Here’s where I’m at.
App Layout:
existing_groups_list = []
tbl_existing_groups_cols = ['date', 'groupName']
dash_table.DataTable(
id='saved_groups_table',
data=existing_groups_list,
columns=[{'name': i, 'id': i} for i in tbl_existing_groups_cols],
row_selectable='single',
)
Callback:
@app.callback(
Output(component_id='saved_groups_table', component_property='children'),
Input('main_chart', 'selectedData'),Input('dogroups_highlighted_points', 'data'),
prevent_initial_call=False
)
def update_saved_groups_table(chartt, savedGroups):
_df = pd.DataFrame(savedGroups)
_df = _df.drop(['data'], axis=1)
return _df.to_dict('records')
There are no errors, but I’m missing something obvious b/c the dataTable is not being updated with the localStorage data…
What have I missed?
Does anyone know of an example that touches on what I’m trying to do (doesn’t hurt to ask)?
3 posts - 2 participants