add zh-CN/integrations_to_tide.md (#363)

* add zh-CN/integrations_to_tide.md
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- [集成到WebServer](integrations.md)
- [Warp](integrations_to_warp.md)
- [Actix-web](integrations_to_actix_web.md)
- [Tide](integrations_to_tide.md)
- [高级主题](advanced_topics.md)
- [自定义标量](custom_scalars.md)
- [优化查询解决N+1问题](dataloader.md)

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# Actix-web
`async_graphql_tide` 提供一个 trait [tide::Endpoint](https://docs.rs/tide/0.15.0/tide/trait.Endpoint.html) 的实现。如果您想手动处理请求的话,它还提供了 `receive_request``respond` 函数来将一个 Tide 请求转换为一个 GraphQL 请求,并返回 `tide::Response`
## Request example
当创建你的 `tide` 服务器时,你需要将 `Schema` 传递给 `async_graphql_tide::endpoint` 。请注意,你需要启用 `async-std` 中的 feature `attributes` 才能使这个例子正常工作。
```rust
use async_graphql::{
http::{playground_source, GraphQLPlaygroundConfig},
Context, EmptyMutation, EmptySubscription, Object, Schema, SimpleObject,
};
use tide::{http::mime, Body, Response, StatusCode};
#[derive(SimpleObject)]
pub struct Demo {
pub id: usize,
}
pub struct QueryRoot;
#[Object]
impl QueryRoot {
async fn demo(&self, _ctx: &Context<'_>) -> Demo {
Demo { id: 42 }
}
}
#[async_std::main]
async fn main() -> tide::Result<()> {
let mut app = tide::new();
// create schema
let schema = Schema::build(QueryRoot, EmptyMutation, EmptySubscription).finish();
// add tide endpoint
app.at("/graphql")
.post(async_graphql_tide::endpoint(schema));
// enable graphql playground
app.at("/").get(|_| async move {
Ok(Response::builder(StatusCode::Ok)
.body(Body::from_string(playground_source(
// note that the playground needs to know
// the path to the graphql endpoint
GraphQLPlaygroundConfig::new("/graphql"),
)))
.content_type(mime::HTML)
.build())
});
Ok(app.listen("127.0.0.1:8080").await?)
}
```
## Manually handle the request
如果你想手动处理请求,例如读取头,你可以跳过 `async_graphql_tide::endpoint` 而使用 `receive_request``respond` 函数。
```rust
app.at("/graphql").post(move |req: tide::Request<()>| {
let schema = schema.clone();
async move {
let req = async_graphql_tide::receive_request(req).await?;
async_graphql_tide::respond(schema.execute(req).await)
}
});
```
## More examples
[https://github.com/async-graphql/examples/tree/master/tide](https://github.com/async-graphql/examples/tree/master/tide)