pikaa
pikaa
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SSolara
Created by JP on 1/31/2025 in #questions-issues
How do i remove items from GridDraggable?
Because reactives won't notice updates to mutated variables (lists, dicts, etc), you need to reinstantiate them to trigger the rerender. The rerender in the first one is triggered likely because you update file_names, which might be referenced/updated by something else or similar. Do something like: 
def append_item(name, index):
        ...
        new = grid_layout.value + [layout]
        grid_layout.set(grid_layout.value + [layout])
        ...

def delete_item(fname, index):
        ...
        for card in items:
            if card.key == fname:
                for layout in range(len(grid_layout.value)):
                    if index == grid_layout.value[layout]['i']:
                        print('removing layout with index: ' +str(grid_layout.value[layout]['i']))
                        grid_layout.set(grid_layout.value[:q] + grid_layout.value[q + 1:])
        save_grid()
def append_item(name, index):
        ...
        new = grid_layout.value + [layout]
        grid_layout.set(grid_layout.value + [layout])
        ...

def delete_item(fname, index):
        ...
        for card in items:
            if card.key == fname:
                for layout in range(len(grid_layout.value)):
                    if index == grid_layout.value[layout]['i']:
                        print('removing layout with index: ' +str(grid_layout.value[layout]['i']))
                        grid_layout.set(grid_layout.value[:q] + grid_layout.value[q + 1:])
        save_grid()
See more by Marteen at: https://github.com/widgetti/solara/pull/595 Additionally, see https://github.com/widgetti/solara/issues/867#issuecomment-2568694422 for notes about shared globals.
19 replies
SSolara
Created by JP on 1/31/2025 in #questions-issues
How do i remove items from GridDraggable?
Are you mutating the dictionary correctly? Can you send a code snippet of your add/remove code so we can have a look?
19 replies
SSolara
Created by Ben Epstein on 12/29/2024 in #general
Am I missing something simple? How do I
try this and you can see that it just resets it, dont know if that's intended though pycafe here 
import solara as sl

outervalue = sl.reactive(True)


@sl.component
def GoodButton():
    print("rerender on goodbutton triggered, value is currently",
          outervalue.value)
    sl.Button(
        label="Hi" if outervalue.value else "Bye",
        on_click=lambda x=outervalue.value: outervalue.set(not x),
    )
    return


@sl.component
def BadButton():
    value = sl.reactive(True)
    print("rerender on badbutton triggered, value is currently", value.value)
    return sl.Button(
        label="Hi" if value.value else "Bye",
        on_click=lambda x=value.value: value.set(not x),
    )


@sl.component
def Page():
    GoodButton()
    BadButton()


if __name__ == "__main__":
    Page()
import solara as sl

outervalue = sl.reactive(True)


@sl.component
def GoodButton():
    print("rerender on goodbutton triggered, value is currently",
          outervalue.value)
    sl.Button(
        label="Hi" if outervalue.value else "Bye",
        on_click=lambda x=outervalue.value: outervalue.set(not x),
    )
    return


@sl.component
def BadButton():
    value = sl.reactive(True)
    print("rerender on badbutton triggered, value is currently", value.value)
    return sl.Button(
        label="Hi" if value.value else "Bye",
        on_click=lambda x=value.value: value.set(not x),
    )


@sl.component
def Page():
    GoodButton()
    BadButton()


if __name__ == "__main__":
    Page()
11 replies
SSolara
Created by Ben Epstein on 12/29/2024 in #general
Am I missing something simple? How do I
each rerender is likely redefining the global reactive, so it sets it to true each time
11 replies
SSolara
Created by pikaa on 3/10/2024 in #questions-issues
Plotly FigureWidget axes do not reset ranges within solara's render context
While this works, it refreshes the widget, meaning any user relayout (i.e. zoom & pan) is lost. I'd ideally like to update the property using an effect to keep the current range during the flip updates.
6 replies
SSolara
Created by pikaa on 3/10/2024 in #questions-issues
Plotly FigureWidget axes do not reset ranges within solara's render context
Here it is. I was hitting character limit, so I just originally sent that snippet. I've additionally added another plot for a basic scatterplot, where it also doesn't unflip.
6 replies
SSolara
Created by artursp. on 1/3/2024 in #questions-issues
Keep zoom state of plotly figure when re-render is triggered.
you can do this by using the on_relayout callback in FigurePlotly by saving the key relayout information (x/y range), then calling upon it when you need it for a redraw
4 replies