Since the entire Ferry architecture is built around native Dart Streams, the
Operation Widget is just a simple wrapper around the Flutter
This example assumes we've registered our
Client instance with
get_it, but you can use any dependency injection method.
Usage with Mutations
While you can use the
Operation widget with any GraphQL operation, including Mutations, you probably don't need to use the widget.
It's often easier to just execute the Mutation directly:
However, sometimes we may want to show the result of calling a mutation in our Flutter UI. In that case, we can still use the
Operation Widget, but we probably don't want the mutation to run immediately when the Widget loads. To tell Ferry not to execute the mutation immediately, we can set
executeOnListen = false on our request.
Now we can use this request in our
Operation Widget just as we did with our
AllPokemon Query above. When we are ready to execute our mutation, we simply add it to the