REST API with gojsonschema: first path segment in URL cannot contain colon - go

Question

I'm having issues making github.com/xeipuuv/gojsonschema work for my REST API that I'm currently building.
The procedure would look like this
User sends request to /api/books/create (in this case I'm sending a PUT request)
User inputs body parameters name and content
The server converts these body parameters into readable JSON
The server tries to validate the JSON using a json schema
The server performs the request
or that is how it should work.
I get this error when trying to validate the JSON and I have no clue how to fix it.
http: panic serving [::1]:58611: parse {"name":"1","content":"2"}: first path segment in URL cannot contain colon
type CreateParams struct {
Name string
Content string
}
func Create(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
data := &CreateParams{
Name: r.Form.Get("name"),
Content: r.Form.Get("Content"),
}
jsonData, err := json.Marshal(data)
if err != nil {
fmt.Println(err)
return
}
fmt.Println(string(jsonData))
schema := `{
"required": [
"Name",
"Content"
],
"properties": {
"Name": {
"$id": "#/properties/Name",
"type": "string",
"title": "The Name Schema",
"default": "",
"examples": [
"1"
],
"minLength": 3,
"pattern": "^(.*)$"
},
"Content": {
"$id": "#/properties/Content",
"type": "string",
"title": "The Content Schema",
"default": "",
"examples": [
"2"
],
"pattern": "^(.*)$"
}
}
}`
schemaLoader := gojsonschema.NewStringLoader(schema)
documentLoader := gojsonschema.NewReferenceLoader(string(jsonData))
result, err := gojsonschema.Validate(schemaLoader, documentLoader)
if err != nil {
panic(err.Error())
}
if result.Valid() {
fmt.Printf("The document is valid\n")
} else {
fmt.Printf("The document is not valid. see errors :\n")
for _, desc := range result.Errors() {
fmt.Printf("- %s\n", desc)
}
}
}
My first thought was that it breaks because r.ParseForm() outputs things in a weird way, but I'm not sure anymore.
Note that I would like to have a "universal" method as I'm dealing with all kinds of requests: GET, POST, PUT, etc. But if you have a better solution I could work with that.
Any help is appreciated!