3
Problems with borrowing Traits
(lemmy.world)
Use self.widget?
Maybe show some code of what you're trying to do.
Yes, obviously, but there are de-referincing/borrwowing/trait problem.
If you want to check the Trait: https://docs.rs/ratatui/latest/ratatui/widgets/trait.Widget.html
If you want to check what function do I need to run: https://docs.rs/ratatui/latest/ratatui/terminal/struct.Frame.html#method.render_widget
So the struct is something like
struct Panel<T: Widget> { data: T }
(tried also with Box, Rc, &mut T and Box
I need to implement a method for Panel which simply uses the function linked above. (so just asks for a Frame, the Rect type is generated by my other function)
That function takes ownership of the Widget, there's no borrowing here. Maybe that's the problem, that you're passing a reference instead of the actual object?
So, if you have a Panel containing the Widget, the function you're calling render_widget in has to take self, not &self or &mut self.
Alternatively, you can use data: Option<T> in Panel, let the function take &mut self and then use self.data.take() to move it out of self.
I checked the code and noticed that I wrote &self as the parameter 🤦🏻
Now everything works. Thanks man
Seems like data: T or data: &'a mut T should work for you. Your function should be accepting mut self or &mut self.
Showing the code and the errors compiler gives to you would help a bunch.
The first problem I saw is that Widget::render takes self by value, meaning that the widget will be destroyed after being rendered once. The need to satisfy that method's type could be the cause of the other errors you're running into.
this post was submitted on 21 Jul 2023
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