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47 lines
1.3 KiB
Markdown
47 lines
1.3 KiB
Markdown
# jsonpatch
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As per http://jsonpatch.com/ JSON Patch is specified in RFC 6902 from the IETF.
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JSON Patch allows you to generate JSON that describes changes you want to make to a document, so you don't have to send the whole doc. JSON Patch format is supported by HTTP PATCH method, allowing for standards based partial updates via REST APIs.
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```bash
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go get github.com/mattbaird/jsonpatch
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```
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I tried some of the other "jsonpatch" go implementations, but none of them could diff two json documents and
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generate format like jsonpatch.com specifies. Here's an example of the patch format:
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```json
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[
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{ "op": "replace", "path": "/baz", "value": "boo" },
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{ "op": "add", "path": "/hello", "value": ["world"] },
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{ "op": "remove", "path": "/foo"}
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]
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```
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The API is super simple
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#example
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```go
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package main
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import (
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"fmt"
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"github.com/mattbaird/jsonpatch"
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)
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var simpleA = `{"a":100, "b":200, "c":"hello"}`
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var simpleB = `{"a":100, "b":200, "c":"goodbye"}`
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func main() {
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patch, e := jsonpatch.CreatePatch([]byte(simpleA), []byte(simpleB))
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if e != nil {
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fmt.Printf("Error creating JSON patch:%v", e)
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return
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}
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for _, operation := range patch {
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fmt.Printf("%s\n", operation.Json())
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}
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}
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```
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This code needs more tests, as it's a highly recursive, type-fiddly monster. It's not a lot of code, but it has to deal with a lot of complexity.
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