Show the variable name when get error

[swloki]

When the variables are Option and Result, Askama reports errors, but it doesn't indicate which variable caused the issue. It would be helpful to print the name of the variable that caused the error.

[GuillaumeGomez]

Do you have an example?

[swloki]

error[E0599]: the method askama_auto_escape exists for reference &&AutoEscaper<'_, ..., ...>, but its trait bounds were not satisfied
--> auto_server_frontend/src/components/img_config_list.rs:10:10
|
10 | #[derive(Template, Debug, WebTemplate)]
| ^^^^^^^^ method cannot be called on &&AutoEscaper<'_, ..., ...> due to unsatisfied trait bounds
|
::: /home/work/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/result.rs:548:1
|
548 | pub enum Result<T, E> {
| --------------------- doesn't satisfy _: Display
|
= note: the following trait bounds were not satisfied:
std::result::Result<std::string::String, components::dashboard::_::askama::Error>: std::fmt::Display
which is required by &&AutoEscaper<'_, std::result::Result<std::string::String, components::dashboard::_::askama::Error>, components::dashboard::_::askama::filters::Text>: AutoEscape