Binding json POSTed to a struct

[pandex]

I have this json POSTed via Ajax in this valid format:

var payload = '{"x":1,"y":2,"z":3…}';

I assume the only way to get payload in echo (either as string or json) is via c.Bind(). I tried

type Payload struct {
    S string 
}

var pLoad Payload
c.Bind(&pLoad)

but that doesn't work: pLoad or pLoad.S is empty.

I can't break out each json item in the struct (x, y, z…) since it's variable. For now, I'd just like to treat {"x":1,"y":2,"z":3…} as one string which eventually goes into a DB. I don't want to do

var payload = '{"a":"{"x":1,"y":2,"z":3…}"}';

either.

How do I bind a POSTed json ({"string": "string"/number}, like '{"x":1,"y":"two","z":3…}') into a struct or variable as a single string value?

[vishr]

I don't think you can decode a string with no key into go struct. Looking into http://stackoverflow.com/a/7487892/197473, using just a string as JSON payload is not valid. You can send your request as text/plain and read request body into a string, like below:

if b, err := ioutil.ReadAll(c.Request().Body); err == nil {
  return string(b)
} 

[pandex]

Thanks for the b, err := ioutil.ReadAll(c.Request().Body) tip.
That works and as I was exploring different Postgres types like bytea and json, I also used

var b map[string]int16