26 questions
3
votes
1
answer
95
views
Mongo nested struct with omitempty
Consider the following 2 structs:
type Struct1 struct {
foo string `bson:"foo,omitempty"`
bar string `bson:"bar,omitempty"`
Struct2 *struct2 `bson:"struct2,omitempty&...
- 107
1
vote
0
answers
109
views
Implementing grpc in gnark v0.8.1, how to convert Proof, Verification Key & Public Witness to go-native type?
In gnark v0.8.1,
We first need to convert those 3 to go-native i.e. we convert them to []byte.
I tried implementing Serialize() and DeSerialize(), but I am facing errors.
Issue: groth16.Proof is an ...
- 11
1
vote
1
answer
460
views
parse nested json using struct in go language
Unable to parse nested json into structs objects using go lang
I have a nested json string that I want to parse using struct in Go language. The json looks like this
{"action":"add"...
- 47
-2
votes
1
answer
107
views
structtag go package seems not change tags inside function
im working to this code:
package main
import (
"fmt"
"reflect"
"github.com/fatih/structtag"
)
type Person struct {
Name ...
0
votes
2
answers
90
views
How to see tag key of json with go struct?
I am learning https://www.digitalocean.com/community/tutorials/how-to-use-json-in-go#using-a-struct-to-generate-json (old version of Go).
I use go 1.20.1 , Windows 11 x64, GoLand 2022.3.2 .
package ...
- 1
1
vote
0
answers
56
views
Baked-in validation to return an error if the request body contains a specific field in Go
I am using go struct validator library https://github.com/go-playground/validator to validate struct which is used to decode the request body of a patch request. I want return an error if a specific ...
- 57
0
votes
1
answer
192
views
JSON Arrays as Go Structs
I am trying to call an array of objects from my JSON file but I am always facing an error saying: "cannot unmarshal array into Go value of type config.APPConfig".
How can I ensure the ...
- 11
1
vote
2
answers
3k
views
How to unmarshall time string into time.Time in golang?
I am reading data from multiple tables using JOIN, CONCAT, GROUP_CONCAT, JSON_OBJECT. The data is read into the below mentioned model using gorm.
type OrgUserDisPublisherData struct {
Disciplines ...
- 577
0
votes
0
answers
737
views
Golang scan db rows to json of string and array
I am trying to get the output from DB using an inner join with 3 tables
say Table A and B.
Output Struct
type C struct {
A A `json:"A"`
B B `json:&...
- 305
0
votes
1
answer
2k
views
Golang use array values in db query to filter records
I have list of array int64 values
ids = [{1} {2} {3}]
I want to use the above array in db query to filter out the records where ID is not in above ids.
SELECT * from table where id not in (1,2,3);
I ...
- 305
0
votes
1
answer
2k
views
appending to YAML file using go lang
I writing a golang program which append rule to the file as mentioned below
Required format:
customRules:
custom-rules.yaml: |-
- rule: Pod Created in Kube Namespace
append: true
...
- 89
0
votes
1
answer
2k
views
Go - struct not visible in the same package but nested folder
I am working on a Go project with the structure as this:
pages (folder)
-> faculty (folder)
> instructors.go
> professors.go
generalpages.go (inside pages folder)
...
- 488
0
votes
2
answers
764
views
How to declare something like empty Object/Struct inside Struct?
Hi i am process of learning the Go language, and i want to ask how to create empty Object/Struct as domain model data type? i am using Fiber as my framework and here is the example of what i want to ...
- 3,810
0
votes
1
answer
565
views
Unable to write a generic function that can work on multiple Structs in Golang
I am new to Go, and learning Interfaces and Structs. I am having 2 structs - ServiceSection and SliderSection and I am trying to accomplish the below 2 tasks with each of them-
GET the JSON response ...
- 2,257
0
votes
2
answers
3k
views
How do I change the JSON tag within a Go struct?
I have a structure that looks like this
type MediaFile struct {
ID string `json:"id"`
Secret string `json:"-"`
Title ...
- 77
3
votes
1
answer
2k
views
How to marshal struct as if it were an anonymous struct?
The documentation states:
Anonymous struct fields are usually marshaled as if their inner exported fields were fields in the outer struct.
For examble:
type foo struct {
Foo1 string `json:"...
- 105
4
votes
1
answer
3k
views
Add bson tags to the go struct using GoModifyTags
I am trying to use GoModifyTags but it's not giving me required result.
I have installed this as per the instruction but don't know how to implement. Using VScode editor.
I am trying to add bson tags ...
- 4,994
6
votes
2
answers
7k
views
Handling nested struct in Go Validator.v2
I have been using Go Validator.v2 for field validations and it works elegantly for my non-struct typed fields. However, when it comes to handling struct-based fields (within the original struct), ...
- 133
0
votes
1
answer
521
views
How do I get a specific api by it's name and then get it's ID from this "Apis" list of structs?
type Apis struct {
Items []struct {
ID string `json:"id"`
Name string `json:"name"`
Description string `...
0
votes
1
answer
411
views
How to write a struct with nested recursive data in golang
I have data like following
{
"cars": {
"toyota": [
"sedan",
"pickup"
],
"honda": [
"sedan",
"couple",
"pickup"
...
- 15
-1
votes
1
answer
188
views
go reflect find by structtag
type A struct {
Name *NameS `json:"name"`
}
for a struct A,is there a method in reflect that I can find a field by structtag
like
reflect.ValueOf(&ns)
// struct
s := ps.Elem()
s.FieldByTag("...
- 710
1
vote
0
answers
1k
views
Is there any way I set omitempty by default for specific json.Encoder or in fallback on global configuration?
like
type User struct {
ID int32 `json:"_id"`
Week string `json:"week"`
}
json.Marshal(&User{},true)//omitempty is true
will return
{}
is bson,yaml,sql or ...
- 710
0
votes
1
answer
996
views
Can you set multiple (different) tags with the same value?
For some of my projects, I have had to use the viper package to use configuration.
The package requires you to add the mapstructure:"fieldname" to identify and set your configuration object's fields ...
- 15
-2
votes
1
answer
677
views
Read Multiple json object from a json file in Go
I am trying to read the following json objects from the json file. So the number of objects are not predefined, they can be multiple or just one.
So I tried making this struct but I am not able to ...
1
vote
2
answers
73
views
Cannot read StructTag for some reason
I have this handler:
func (h Handler) makeGetMany(v PeopleInjection) http.HandlerFunc {
type RespBody struct {
TypeCreatorMeta string `type:"bar",tc_resp_body_type:"true"`
}
...
user7898461
6
votes
1
answer
4k
views
encoding/json unmarshal missing a field
The following code unmarshal's the "Id", but not the "Hostname". Why? I've been staring at it for long enough now that if it's a typo I know I'll never spot it. Help please. (http://play.golang.org/p/...
- 6,983