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Improve documentation and fix typos
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Сырцев Вадим Игоревич
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commit
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2 changed files with 69 additions and 50 deletions
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@ -88,7 +88,6 @@ define_message_ext! {
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(filter_migration, Message::chat_migration),
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(filter_migration_from, Message::migrate_from_chat_id),
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(filter_migration_to, Message::migrate_to_chat_id),
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(filter_reply_to_message, Message::reply_to_message),
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(filter_forward_from, Message::forward_from),
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// Rest variants of a MessageKind
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@ -31,58 +31,78 @@
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//! </kbd>
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//! </div>
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//!
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//! [Telegram bots]: https://telegram.org/blog/bot-revolution
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//! [`async`/`.await`]: https://rust-lang.github.io/async-book/01_getting_started/01_chapter.html
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//! [Rust]: https://www.rust-lang.org/
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//! ## Working with Updates and Messages
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//! There're a great number of [update kinds](https://docs.rs/teloxide/latest/teloxide/types/enum.UpdateKind.html) and
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//! [message kinds](https://docs.rs/teloxide/latest/teloxide/types/enum.MessageKind.html) to work with! Usually it's essential to filter specific ones
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//! and process them in *handler functions*. *Teloxide* provides some `filter methods` for `Update` and `Message` types in [UpdateFilterExt](https://docs.rs/teloxide/latest/teloxide/dispatching/trait.UpdateFilterExt.html)
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//! and [MessageFilterExt](https://docs.rs/teloxide/latest/teloxide/dispatching/trait.MessageFilterExt.html) traits respectively. In addition to filtering, these
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//! methods will inject the appropriate type into your handler functions. For instance, if you use `Update::filter_message`, the `Message` object will be available as a parameter
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//! at your handler functions. Analogously the use of `Message::filter_text` will inject the `String` object.
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//!
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//! (Note: `filter_text` actually uses a function that returns Option<&str> value, so every filter_.. fn *always* return an `Owned` version of a type)
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//! There is a great number of [update kinds] and [message kinds] to work with!
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//! Usually it's essential to filter specific ones and process them in `handler
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//! functions`. Teloxide provides some `filter methods` for [Update] and
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//! [Message] types in [UpdateFilterExt] and [MessageFilterExt] traits
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//! respectively. In addition to filtering, these methods will `inject` the
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//! appropriate type into your handler functions. For instance, if you use
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//! [Update::filter_message], the instance of the [Message] will be available as
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//! a parameter for your handler functions. Similarly the use of
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//! [Message::filter_text] will inject a [String] into the context.
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//!
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//! Moreover, *filter_map* function can inject some object according to the schema flow. More in the example below!
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//! Moreover, [filter_map] function can inject some dependencies according to
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//! the schema flow. More in the example below!
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//!
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//! Here is a quick example (filter text message and inject it's text into the handler function):
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//! Here is a quick example (filter text message and inject it's text into the
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//! handler function):
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//! ```no_run
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//! # #[cfg(feature = "ctrlc_handler")]
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//! use teloxide::prelude::*;
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//! use teloxide::{prelude::*, types::User};
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//!
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//! # #[cfg(feature = "ctrlc_handler")]
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//! # #[tokio::main]
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//! # async fn main() {
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//! let bot = Bot::from_env();
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//! let schema = Update::filter_message()
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//! // Inject the `User` object representing the author of an incoming
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//! // message into every successive handler function
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//! .filter_map(|update: Update| update.user().cloned())
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//! .branch(
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//! // Use filter_text method of MessageFilterExt to accept
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//! // only textual messages. Others will be ignored by this handler
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//! Message::filter_text().endpoint(process_text_message)
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//! );
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//! pub type Error = Box<dyn std::error::Error + Send + Sync>;
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//!
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//! Dispatcher::builder(bot, schema)
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//! .build()
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//! .dispatch()
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//! .await;
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//! Ok(())
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//! })
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//! .await;
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//! # } #[cfg(not(feature = "ctrlc_handler"))] fn main(){}
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//! #[tokio::main]
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//! async fn main() -> Result<(), Error> {
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//! let bot = Bot::from_env();
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//! let schema = Update::filter_message()
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//! /*
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//! Inject the `User` object representing the author of an incoming
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//! message into every successive handler function (1)
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//! */
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//! .filter_map(|update: Update| update.from().cloned())
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//! .branch(
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//! /*
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//! Use filter_text method of MessageFilterExt to accept
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//! only textual messages. Others will be ignored by this handler (2)
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//! */
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//! Message::filter_text().endpoint(process_text_message),
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//! );
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//!
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//! Dispatcher::builder(bot, schema).build().dispatch().await;
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//! Ok(())
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//! }
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//!
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//! /// Replies to the user's text messages
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//! async fn process_text_message(bot: Bot, user: User, message_text: String) -> Result<(), teloxide::RequestError> {
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//! // The id of a chat with a user is the same as his telegram_id
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//! // from the bot's perspective
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//! bot.send_message(user.id, format!("Hi! You sent: {message_text}"))
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//! async fn process_text_message(bot: Bot, user: User, message_text: String) -> Result<(), Error> {
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//! /*
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//! The id of a chat with a user is the same as his telegram_id
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//! from the bot's perspective.
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//!
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//! Injected dependencies:
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//! - Bot is provided by the Dispatcher::dispatch
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//! - User is provided by the (1)
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//! - String is provided by the (2)
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//! */
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//! bot.send_message(user.id, format!("Hi! You sent: {message_text}"));
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//! Ok(())
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//! }
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//! ```
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//!
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//! [Telegram bots]: https://telegram.org/blog/bot-revolution
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//! [`async`/`.await`]: https://rust-lang.github.io/async-book/01_getting_started/01_chapter.html
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//! [Rust]: https://www.rust-lang.org/
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//! [update kinds]: crate::types::UpdateKind
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//! [message kinds]: crate::types::MessageKind
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//! [Update]: crate::types::Update
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//! [Message]: crate::types::Message
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//! [Message::filter_text]: crate::dispatching::MessageFilterExt::filter_text
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//! [UpdateFilterExt]: crate::dispatching::MessageFilterExt
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//! [MessageFilterExt]: crate::dispatching::UpdateFilterExt
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//! [Update::filter_message]: crate::dispatching::UpdateFilterExt::filter_message
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//! [filter_map]: crate::prelude::Handler::filter_map
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// This hack is used to cancel formatting for a Markdown table. See [1], [2], and [3].
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//
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