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62 lines
2.3 KiB
Markdown
62 lines
2.3 KiB
Markdown
# Default Middleware
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```clj
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[metosin/reitit-middleware "0.5.14"]
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```
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Any Ring middleware can be used with `reitit-ring`, but using data-driven middleware is preferred as they are easier to manage and in many cases yield better performance. `reitit-middleware` contains a set of common ring middleware, lifted into data-driven middleware.
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* [Parameter Handling](#parameters-handling)
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* [Exception Handling](#exception-handling)
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* [Content Negotiation](#content-negotiation)
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* [Multipart Request Handling](#multipart-request-handling)
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* [Inspecting Middleware Chain](#inspecting-middleware-chain)
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## Parameters Handling
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`reitit.ring.middleware.parameters/parameters-middleware` to capture query- and form-params. Wraps
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`ring.middleware.params/wrap-params`.
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**NOTE**: will be factored into two parts: a query-parameters middleware and a Muuntaja format responsible for the the `application/x-www-form-urlencoded` body format.
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## Exception Handling
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See [Exception Handling with Ring](exceptions.md).
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## Content Negotiation
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See [Content Negotiation](content_negotiation.md).
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## Multipart Request Handling
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Wrapper for [Ring Multipart Middleware](https://github.com/ring-clojure/ring/blob/master/ring-core/src/ring/middleware/multipart_params.clj). Emits swagger `:consumes` definitions automatically.
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Expected route data:
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| key | description |
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| -------------|-------------|
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| `[:parameters :multipart]` | mounts only if defined for a route.
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```clj
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(require '[reitit.ring.middleware.multipart :as multipart])
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```
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* `multipart/multipart-middleware` a preconfigured middleware for multipart handling
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* `multipart/create-multipart-middleware` to generate with custom configuration
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## Inspecting Middleware Chain
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`reitit.ring.middleware.dev/print-request-diffs` is a [middleware chain transforming function](transforming_middleware_chain.md). It prints a request and response diff between each middleware. To use it, add the following router option:
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```clj
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:reitit.middleware/transform reitit.ring.middleware.dev/print-request-diffs
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```
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Partial sample output:
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## Example app
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See an example app with the default middleware in action: https://github.com/metosin/reitit/blob/master/examples/ring-swagger/src/example/server.clj.
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