Batch updates

[edan-bainglass]

I have

wizard_models = solara.reactive([solara.reactive(QeWizardModel())])
data_models = solara.reactive([solara.reactive(QeDataModel())])

and in my component, I have

...
    def add_workflow(pk: int | None = None):
        wizard_models.set(
            [
                *wizard_models.value,
                solara.reactive(QeWizardModel(pk=pk)),
            ],
        )
        data_models.set(
            [
                *data_models.value,
                solara.reactive(QeDataModel(pk=pk)),
            ],
        )
        active.set(len(data_models.value) - 1)
...

On adding a workflow, both reactive variables trigger a re-render each. Does Solara or Reacton have a batching mechanism?

[iisakkirotko]

Hey! This is indeed expected behaviour at this point. We're looking to improve the situation once 2.0 releases (which shouldn't be too far now). Take a look at this issue, as well as the Reacton pull request.

The way to currently accomplish update batching (from #637):

import solara
import reacton.core


text = solara.reactive("Initial text")

@solara.component
def Page():
    rc = reacton.core.get_render_context()
    print("Render with: ", text.value)
    def change_text():
        with rc:
            text.value = "Should never be rendered visible"
            text.value = "Updated text"
        
    solara.Button("Change text", on_click=change_text)
    solara.Text(text.value)