value

Documentation

Overview

Package value provides lazy.Value for web context.

Index

• func NewQueryIntInList(key string, values []int, or int) lazy.Value
• func NewQueryIntInRange(key string, min int, max int, or int) lazy.Value
• func NewQueryIntOr(key string, or int) lazy.Value
• func NewQueryStringInList(key string, values []string, or string) lazy.Value
• func NewQueryStringOr(key string, or string) lazy.Value
• func NewRequestValue(f func(*web.Request) (interface{}, error)) lazy.Value

Examples

• NewQueryIntOr
• NewQueryStringInList
• NewQueryStringOr
• NewRequestValue

Functions

func NewQueryIntInList

func NewQueryIntInList(key string, values []int, or int) lazy.Value

NewQueryIntInList is like NewQueryIntOr but it also limits the possible values in the `list“

func NewQueryIntInRange

func NewQueryIntInRange(key string, min int, max int, or int) lazy.Value

NewQueryIntInRange is like NewQueryIntOr but it also limits the min and max for the value

func NewQueryIntOr

func NewQueryIntOr(key string, or int) lazy.Value

NewQueryIntOr returns a new *lazy.Value to get the query value by `key` or `or` value if the value is empty or invalid.

Example

val := NewQueryIntOr("foo", 10)
r := web.NewRouter(nil)
r.Get("/", web.HandlerFunc(func(req *web.Request, next web.NextHandler) *response.Response {
	v, _ := val.Eval(req.Context())
	return response.NewText(v)
}))
recorder := httptest.NewRecorder(r)
fmt.Println(
	recorder.TestGet("/?foo=5").Body,
	recorder.TestGet("/?foo=bar").Body,
	recorder.TestGet("/").Body,
)

Output:

5 10 10

func NewQueryStringInList

func NewQueryStringInList(key string, values []string, or string) lazy.Value

NewQueryStringInList is like NewQueryStringOr but it also limits the possible values in the `list“

Example

val := NewQueryStringInList("foo", []string{"bar"}, "default")
r := web.NewRouter(nil)
r.Get("/", web.HandlerFunc(func(req *web.Request, next web.NextHandler) *response.Response {
	v, _ := val.Eval(req.Context())
	return response.NewText(v)
}))
recorder := httptest.NewRecorder(r)
fmt.Println(
	recorder.TestGet("/?foo=aaa").Body,
	recorder.TestGet("/?foo=bar").Body,
)

Output:

default bar

func NewQueryStringOr

func NewQueryStringOr(key string, or string) lazy.Value

NewQueryStringOr returns a new *lazy.Value to get the query value by `key` or `or` value if the value is empty.

Example

val := NewQueryStringOr("foo", "bar")
r := web.NewRouter(nil)
r.Get("/", web.HandlerFunc(func(req *web.Request, next web.NextHandler) *response.Response {
	v, _ := val.Eval(req.Context())
	return response.NewText(v)
}))
recorder := httptest.NewRecorder(r)
fmt.Println(
	recorder.TestGet("/?foo=aaa").Body,
	recorder.TestGet("/").Body,
)

Output:

aaa bar

func NewRequestValue

func NewRequestValue(f func(*web.Request) (interface{}, error)) lazy.Value

NewRequestValue returns a lazy.Value in a request context

Example

val := NewRequestValue(func(req *web.Request) (interface{}, error) {
	return req.URL.Query().Encode(), nil
})
r := web.NewRouter(nil)
r.Get("/", web.HandlerFunc(func(req *web.Request, next web.NextHandler) *response.Response {
	v, _ := val.Eval(req.Context())
	return response.NewText(v)
}))
recorder := httptest.NewRecorder(r)
fmt.Println(recorder.TestGet("/?foo=bar").Body)

Output:

foo=bar