https://github.com/ring-clojure/ring-json

Ring middleware for handling JSON
https://github.com/ring-clojure/ring-json

clojure json middleware ring

Last synced: about 1 month ago
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Ring middleware for handling JSON

• Host: GitHub
• URL: https://github.com/ring-clojure/ring-json
• Owner: ring-clojure
• Created: 2012-07-16T12:23:39.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2021-06-09T19:33:32.000Z (about 3 years ago)
• Last Synced: 2024-04-09T14:22:14.230Z (3 months ago)
• Topics: clojure, json, middleware, ring
• Language: Clojure
• Size: 63.5 KB
• Stars: 313
• Watchers: 12
• Forks: 51
• Open Issues: 11
• Metadata Files:
  • Readme: README.md

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• awesome-clojure - ring-json - Ring middleware for handling JSON (server)

README

        
# Ring-JSON

[![Build Status](https://travis-ci.org/ring-clojure/ring-json.svg?branch=master)](https://travis-ci.org/ring-clojure/ring-json)

Standard Ring middleware functions for handling JSON requests and

responses.

## Installation

To install, add the following to your project `:dependencies`:

    [ring/ring-json "0.5.1"]

## Usage

#### wrap-json-response

The `wrap-json-response` middleware will convert any response with a

collection as a body (e.g. map, vector, set, seq, etc) into JSON:

```clojure

(require '[ring.middleware.json :refer [wrap-json-response]]

         '[ring.util.response :refer [response]])

(defn handler [request]

  (response {:foo "bar"}))

(def app

  (wrap-json-response handler))

```

#### wrap-json-body

The `wrap-json-body` middleware will parse the body of any request

with a JSON content-type into a Clojure data structure, and assign it

to the `:body` key.

This is the preferred way of handling JSON requests.

```clojure

(use '[ring.middleware.json :only [wrap-json-body]]

     '[ring.util.response :only [response]])

(defn handler [request]

  (prn (get-in request [:body "user"]))

  (response "Uploaded user."))

(def app

  (wrap-json-body handler {:keywords? true :bigdecimals? true}))

```

#### wrap-json-params

The `wrap-json-params` middleware is an alternative to

`wrap-json-body` for when it's convenient to treat a JSON request as a

map of parameters. Rather than replace the `:body` key, the parsed

data structure will be assigned to the `:json-params`. The parameters

will also be merged into the standard `:params` map.

```clojure

(require '[ring.middleware.json :refer [wrap-json-params]]

         '[ring.util.response :refer [response]])

(defn handler [request]

  (prn (get-in request [:params "user"]))

  (response "Uploaded user."))

(def app

  (wrap-json-params handler))

```

Note that Ring parameter maps use strings for keys. For consistency,

this means that `wrap-json-params` does not have a `:keywords?`

option. Instead, use the standard Ring `wrap-keyword-params` function:

```clojure

(require '[ring.middleware.keyword-params :refer [wrap-keyword-params]])

(def app

  (-> handler

      wrap-keyword-params

      wrap-json-params))

```

## License

Copyright © 2021 James Reeves

Distributed under the MIT License, the same as Ring.