Hi I am passing a query parameter to my gin server like this:
curl -X POST \\
'http://localhost:4000/url?X=val1&Y=val2&x[]=1&x[]=2 '
This is then sent to the my gin handler function
func handler (c *gin.Context) {
fmt.Println(c.Query("X"))
fmt.Println(c.Query("Y"))
fmt.Println(c.QueryArray("x"))
}
While c.Query("x") and c.Query("Y") works, c.QueryArray("x") does not work!
I am not sure what am I missing over here. I have tried the same with GET request as well and it does not work.
Other experiments that did not work for me are here:
fmt.Println(c.Params.Get("x"))
fmt.Println(c.Params.Get("gene"))
fmt.Println(c.PostFormArray("x"))
Drafted answer from my comment for SO users.
Repeat field name with values:
curl -X POST 'http://localhost:4000/url?X=val1&Y=val2&x=1&x=2'
or:
Separated by commas:
curl -X POST 'http://localhost:4000/url?X=val1&Y=val2&x=1,2'
This maybe over-engineered, but it got things done for me:
// @Param property_type query []uint32 false "property_types"
func (svc *HttpService) acceptListofQuery(c *gin.Context) {
var propertyTypes []uint32
propertyTypes, done := svc.parsePropTypes(c)
if done {
return
}
// ..... rest of logic here
c.JSON(200, "We good")
}
func (svc *HttpService) parsePropTypes(c *gin.Context) ([]uint32, bool) {
var propertyTypes []uint32
var propertyTypesAsString string
var propertyTypesAsArrayOfStrings []string
propertyTypesAsString, success := c.GetQuery("property_types")
propertyTypesAsArrayOfStrings = strings.Split(propertyTypesAsString, ",")
if success {
for _, propertyTypeAsString := range propertyTypesAsArrayOfStrings {
i, err := strconv.Atoi(propertyTypeAsString)
if err != nil {
svc.ErrorWithJson(c, 400, errors.New("invalid property_types array"))
return nil, true
}
propertyTypes = append(propertyTypes, uint32(i))
}
}
return propertyTypes, false
}
Then you can send something like:
curl -X POST 'http://localhost:4000/url?property_types=1,4,7,12
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