Go json delete with field
- You can used djson to filter json by custom
- If you want get a select field , you can visit sjson
To start using DJSON, install Go and run go get:
go get -u github.com/relunctance/djsonThis will retrieve the library.
Set sets the value for the specified path. A path is in dot syntax, such as "name.last" or "age". This function expects that the json is well-formed and validated. Invalid json will not panic, but it may return back unexpected results. Invalid paths may return an error.
package main
import "github.com/relunctance/djson"
const json = `{"name":{"first":"Janet","last":"Prichard"},"age":47}`
func main() {
value, _ := djson.Set(json, "name.last", "Anderson")
println(value)
}This will print:
{"name":{"first":"Janet","last":"Anderson"},"age":47}Set path to filter json by custom Example:
package main
import (
"fmt"
"github.com/relunctance/djson"
)
const json = `{
"name": {"first": "Tom", "last": "Anderson"},
"age":37,
"children": ["Sara","Alex","Jack"],
"fav.movie": "Deer Hunter",
"friends": [
{"last": "Murphy"},
{"first": "Roger", "last": "Craig","name":"abc"},
{"first": "James1", "last": "Murphy"},
{
"first": "Roger2",
"last": "Craig",
"name":"abc",
"c":[
{
"kw": {
"signature": [
"c1"
]
},
"tabname": "tab1"
},
{
"kw": {
"signature": [
"c2"
]
},
"tabname": "tab2"
},
{
"kw": {
"signature": [
"c3"
]
},
"tabname": "tab3"
}
]
}
]
}`
func main() {
paths := []string{
"age",
"children.0",
"friends.#.first",
"friends.#.c.#.tabname",
}
ret, _ := djson.Deletes(json, paths)
fmt.Println(ret)
}This will print:
{
"name": {
"first": "Tom",
"last": "Anderson"
},
"children": [
"Alex",
"Jack"
],
"fav.movie": "Deer Hunter",
"friends": [
{
"last": "Murphy"
},
{
"last": "Craig",
"name": "abc"
},
{
"last": "Murphy"
},
{
"c": [
{
"kw": {
"signature": [
"c1"
]
}
},
{
"kw": {
"signature": [
"c2"
]
}
},
{
"kw": {
"signature": [
"c3"
]
}
}
],
"last": "Craig",
"name": "abc"
}
]
}A path is a series of keys separated by a dot.
The dot and colon characters can be escaped with \.
{
"name": {"first": "Tom", "last": "Anderson"},
"age":37,
"children": ["Sara","Alex","Jack"],
"fav.movie": "Deer Hunter",
"friends": [
{"first": "James", "last": "Murphy"},
{"first": "Roger", "last": "Craig"}
]
}"name.last" >> "Anderson"
"age" >> 37
"children.1" >> "Alex"
"friends.1.last" >> "Craig"
The -1 key can be used to append a value to an existing array:
"children.-1" >> appends a new value to the end of the children array
Normally number keys are used to modify arrays, but it's possible to force a numeric object key by using the colon character:
{
"users":{
"2313":{"name":"Sara"},
"7839":{"name":"Andy"}
}
}A colon path would look like:
"users.:2313.name" >> "Sara"
Pretty much any type is supported:
djson.Set(`{"key":true}`, "key", nil)
djson.Set(`{"key":true}`, "key", false)
djson.Set(`{"key":true}`, "key", 1)
djson.Set(`{"key":true}`, "key", 10.5)
djson.Set(`{"key":true}`, "key", "hello")
djson.Set(`{"key":true}`, "key", map[string]interface{}{"hello":"world"})When a type is not recognized, SJSON will fallback to the encoding/json Marshaller.
Set a value from empty document:
value, _ := djson.Set("", "name", "Tom")
println(value)
// Output:
// {"name":"Tom"}Set a nested value from empty document:
value, _ := djson.Set("", "name.last", "Anderson")
println(value)
// Output:
// {"name":{"last":"Anderson"}}Set a new value:
value, _ := djson.Set(`{"name":{"last":"Anderson"}}`, "name.first", "Sara")
println(value)
// Output:
// {"name":{"first":"Sara","last":"Anderson"}}Update an existing value:
value, _ := djson.Set(`{"name":{"last":"Anderson"}}`, "name.last", "Smith")
println(value)
// Output:
// {"name":{"last":"Smith"}}Set a new array value:
value, _ := djson.Set(`{"friends":["Andy","Carol"]}`, "friends.2", "Sara")
println(value)
// Output:
// {"friends":["Andy","Carol","Sara"]Append an array value by using the `-1` key in a path:
value, _ := djson.Set(`{"friends":["Andy","Carol"]}`, "friends.-1", "Sara")
println(value)
// Output:
// {"friends":["Andy","Carol","Sara"]Append an array value that is past the end:
value, _ := djson.Set(`{"friends":["Andy","Carol"]}`, "friends.4", "Sara")
println(value)
// Output:
// {"friends":["Andy","Carol",null,null,"Sara"]Delete a value:
value, _ := djson.Delete(`{"name":{"first":"Sara","last":"Anderson"}}`, "name.first")
println(value)
// Output:
// {"name":{"last":"Anderson"}}Delete an array value:
value, _ := djson.Delete(`{"friends":["Andy","Carol"]}`, "friends.1")
println(value)
// Output:
// {"friends":["Andy"]}Delete the last array value:
value, _ := djson.Delete(`{"friends":["Andy","Carol"]}`, "friends.-1")
println(value)
// Output:
// {"friends":["Andy"]}package main
import (
"fmt"
"github.com/relunctance/djson"
)
func main() {
const json = `{
"ipinfo": {
"1001.001": {
"name":{
"china_admin_code": "330001",
"city": "",
"city_name": "",
"continent_code": "AP",
"country": "",
"country_code": "CN",
"country_code2": "",
"country_name": "china",
"idd_code": "86",
"isp": "",
"isp_domain": "mobile",
"latitude": "30.287459",
"longitude": "120.153576",
"owner_domain": "",
"proxy_type": "",
"region": "",
"region_name": "zj",
"timezone": "Asia/Shanghai",
"ip": "1.1.1.1",
"utc_offset": "UTC+8"
}
},
"val": {
"name":{
"china_admin_code": "330001",
"city": "",
"city_name": "",
"continent_code": "AP",
"country": "",
"country_code": "CN",
"country_code2": "",
"country_name": "china",
"idd_code": "86",
"isp": "",
"isp_domain": "mobile",
"latitude": "30.287459",
"longitude": "120.153576",
"owner_domain": "",
"proxy_type": "",
"region": "",
"region_name": "zj",
"timezone": "Asia/Shanghai",
"ip": "1.1.1.1",
"utc_offset": "UTC+8"
}
},
"slice": [
{
"china_admin_code": "330001",
"city": "",
"city_name": "",
"continent_code": "AP",
"country": "",
"country_code": "CN",
"country_code2": "",
"country_name": "china",
"idd_code": "86",
"isp": "",
"isp_domain": "mobile",
"latitude": "30.287459",
"longitude": "120.153576",
"owner_domain": "",
"proxy_type": "",
"region": "",
"region_name": "zj",
"timezone": "Asia/Shanghai",
"ip": "1.1.1.1",
"utc_offset": "UTC+8"
},
{
"china_admin_code": "330002",
"city": "",
"city_name": "",
"continent_code": "AS",
"country": "",
"country_code": "CN",
"country_code2": "",
"country_name": "china",
"idd_code": "86",
"isp": "",
"isp_domain": "mobile",
"latitude": "30.287459",
"longitude": "120.153576",
"owner_domain": "",
"proxy_type": "",
"region": "",
"region_name": "zj",
"timezone": "Asia/Shanghai",
"ip": "1.1.1.1",
"utc_offset": "UTC+8"
}
]
}
}`
paths := []string{
"ipinfo.val.name.china_admin_code",
"ipinfo.val.name.city",
"ipinfo.*.*.isp",
"ipinfo.*.name.idd_code",
"ipinfo.'1001.001'.name.city",
"ipinfo.slice.#.city",
"ipinfo.slice.#.city_name",
}
j, _ := djson.Deletes(json, paths)
fmt.Println(j)
}