辅助函数

可用方法

路径

path.App()path.Base()path.Config()
path.Database()path.Storage()path.Public()

时间

carbon.Now()carbon.SetTimezone()carbon.Parse()
carbon.FromTimestamp()carbon.FromDateTime()carbon.FromDate()
carbon.FromTime()carbon.FromStdTime()carbon.IsTestNow()
carbon.SetTestNow()carbon.UnsetTestNow()

Debug

debug.Dump()debug.SDump()debug.FDump()

Maps

maps.Add()maps.Exists()maps.Forget()
maps.Get()maps.Has()maps.HasAny()
maps.Only()maps.Pull()maps.Set()
maps.Where()

Convert

convert.Tap()convert.With()convert.Transform()
convert.Default()convert.Pointer()

Collect

collect.Count()collect.CountBy()collect.Each()
collect.Filter()collect.GroupBy()collect.Keys()
collect.Map()collect.Max()collect.Merge()
collect.Min()collect.Reverse()collect.Shuffle()
collect.Split()collect.Sum()collect.Unique()
collect.Values()

路径

path.App()

path.App() 函数返回 app 目录的路径。您也可以用来生成应用目录下特定文件的路径:

import "github.com/goravel/framework/support/path"

path := path.App()
path := path.App("http/controllers/controller.go")

path.Base()

path.Base() 函数返回项目根目录的路径。您也可以用来生成项目根目录下特定文件的路径:

path := path.Base()
path := path.Base("vendor/bin")

path.Config()

path.Config() 函数返回项目配置目录 (config) 的路径。您也可以用来生成应用配置目录中的特定文件的路径:

path := path.Config()
path := path.Config("app.go")

path.Database()

path.Database() 函数返回 database 目录的路径。您也可以用来生成数据库目录下特定文件的路径:

path := path.Database()
path := path.Database("factories/user_factory.go")

path.Storage()

path.Storage() 函数返回 storage 目录的路径。您也可以用来生成位于资源路径中的特定路径:

path := path.Storage()
path := path.Storage("app/file.txt")

path.Public()

path.Public() 函数返回 public 目录的路径。您也可以用来生成 public 目录下特定文件的路径:

path := path.Public()
path := path.Public("css/app.css")

时间

Goravel 的 carbongolang-module/carbonopen in new window 的一个扩展,主要实现了时间回溯功能,详细用法请参考其官方文档。

carbon.Now()

获取当前时间:

import "github.com/goravel/framework/support/carbon"

carbon.Now()

carbon.SetTimezone()

设置时区:

carbon.SetTimezone(carbon.UTC)

carbon.Parse()

字符串格式化为 Carbon 对象:

carbon.Parse("2020-08-05 13:14:15")

carbon.FromTimestamp()

时间戳格式化为 Carbon 对象:

carbon.FromTimestamp(1577836800)

carbon.FromDateTime()

时间格式化为 Carbon 对象:

carbon.FromDateTime(2020, 1, 1, 0, 0, 0)

carbon.FromDate()

年月日格式化为 Carbon 对象:

carbon.FromDate(2020, 1, 1)

carbon.FromTime()

时分秒格式化为 Carbon 对象:

carbon.FromTime(0, 0, 0)

carbon.FromStdTime()

time.Time 格式化为 Carbon 对象:

carbon.FromStdTime(time.Now())

carbon.IsTestNow()

判断系统时间是否为测试值:

carbon.IsTestNow()

carbon.SetTestNow()

将系统时间设置为一个测试值:

carbon.SetTestNow(carbon.Now())

carbon.UnsetTestNow()

恢复系统时间为正常值:

carbon.UnsetTestNow()

Debug

debug.Dump()

debug.Dump() 可以打印任意对象:

import "github.com/goravel/framework/support/debug"

debug.Dump(myVar1, myVar2, ...)

debug.FDump()

debug.FDump() 可以打印任意对象输出到一个 io.Writer

import "github.com/goravel/framework/support/debug"

debug.FDump(someWriter, myVar1, myVar2, ...)

debug.SDump()

debug.SDump() 可以将打印输出至字符串:

import "github.com/goravel/framework/support/debug"

debug.SDump(myVar1, myVar2, ...)

Maps

maps.Add()

maps.Add() 方法用于向给定的 map 中添加不存在的键值对:

import "github.com/goravel/framework/support/maps"

mp := map[string]any{"name": "Krishan"}
maps.Add(mp, "age", 22)
// map[string]any{"name": "Krishan", "age": 22}

mp2 := map[string]string{}
maps.Add(mp2, "name", "Bowen")
maps.Add(mp2, "name", "Krishan")
// map[string]string{"name": "Bowen"}

maps.Exists()

maps.Exists() 函数用于判断给定的键是否存在于提供的 map 中:

import "github.com/goravel/framework/support/maps"

mp := map[string]any{"name": "Krishan", "age": 22}

exists := maps.Exists(mp, "name") // true

exists = maps.Exists(mp, "email") // false

maps.Forget()

maps.Forget() 函数用于从提供的 map 中移除给定的键:

import "github.com/goravel/framework/support/maps"

mp := map[string]string{"name": "Krishan", "age": "22"}

maps.Forget(mp, "name", "age")
// map[string]string{}

maps.Get()

maps.Get() 函数从提供的 map 中检索给定键的值。如果键不存在,则返回默认值:

import "github.com/goravel/framework/support/maps"

mp := map[string]any{"name": "Bowen"}

value := maps.Get(mp, "name", "Krishan")
// Bowen

value = maps.Get(mp, "age", 22)
// 22

maps.Has()

maps.Has() 函数用于判断给定的键是否存在于提供的 map 中:

import "github.com/goravel/framework/support/maps"

mp := map[string]any{"name": "Goravel", "language": "Go"}

exists := maps.Has(mp, "name", "language")
// true

exists = maps.Has(mp, "name", "age")
// false

maps.HasAny()

maps.HasAny() 函数用于判断给定的任意键是否存在于提供的 map 中:

import "github.com/goravel/framework/support/maps"

mp := map[string]any{"name": "Goravel", "language": "Go"}

exists := maps.HasAny(mp, "name", "age")
// true

exists = maps.HasAny(mp, "age", "email")
// false

maps.Only()

maps.Only() 函数从提供的 map 中检索给定的键:

import "github.com/goravel/framework/support/maps"

mp := map[string]any{"name": "Goravel", "language": "Go"}

newMap := maps.Only(mp, "name")
// map[string]any{"name": "Goravel"}

newMap = maps.Only(mp, "name", "age")
// map[string]any{"name": "Goravel"}

maps.Pull()

maps.Pull() 函数从提供的 map 中检索并移除给定的键:

import "github.com/goravel/framework/support/maps"

mp := map[string]any{"name": "Goravel", "language": "Go"}

name := maps.Pull(mp, "name")
// name = "Goravel"
// mp = map[string]any{"language": "Go"}

maps.Pull() 可以设置默认值在第三个参数,如果键不存在,则返回默认值:

import "github.com/goravel/framework/support/maps"

mp := map[string]any{"name": "Goravel", "language": "Go"}

name := maps.Pull(mp, "age", "default")
// name = "default"
// mp = map[string]any{"name": "Goravel", "language": "Go"}

maps.Set()

maps.Set() 函数用于在提供的 map 中设置给定的键和值:

import "github.com/goravel/framework/support/maps"

mp := map[string]any{"name": "Goravel"}

maps.Set(mp, "language", "Go")
// map[string]any{"name": "Goravel", "language": "Go"}

maps.Where()

maps.Where() 函数使用给定的回调函数过滤提供的 map:

import "github.com/goravel/framework/support/maps"

mp := map[string]string{"name": "Goravel", "language": "Go"}

newMap := maps.Where(mp, func(key string, value string) bool {
    return key == "name"
})
// map[string]string{"name": "Goravel"}

Convert

convert.Tap()

convert.Tap() 函数将给定的值传递给提供的回调函数,并返回该值:

import "github.com/goravel/framework/support/convert"

value := convert.Tap("Goravel", func(value string) {
    fmt.Println(value + " Framework")
})
// Goravel

mp := map[string]string{"name": "Goravel"}
val := convert.Tap(mp, func(value map[string]string) {
    mp["language"] = "Go"
})
// map[string]string{"name": "Goravel", "language": "Go"}

convert.Transform()

convert.Transform() 函数使用提供的回调函数转换给定的值,并返回结果:

import "github.com/goravel/framework/support/convert"

value := convert.Transform(1, strconv.Itoa)
// "1"

val := convert.Transform("foo", func(s string) *foo {
      return &foo{Name: s}
})
// &foo{Name: "foo"}

convert.With()

convert.With() 函数使用提供的值执行给定的回调函数,并返回回调函数的结果:

import "github.com/goravel/framework/support/convert"

value := convert.With("Goravel", func(value string) string {
    return value + " Framework"
})
// Goravel Framework

convert.Default()

convert.Default() 方法返回第一个非零值。如果所有值都为零,则返回零值。

import "github.com/goravel/framework/support/convert"

value := convert.Default("", "foo")
// foo

value = convert.Default("bar", "foo")
// bar

value = convert.Default(0, 1)
// 1

convert.Pointer()

convert.Pointer() 函数返回给定值的指针。

import "github.com/goravel/framework/support/convert"

convert.Pointer("foo") // *string("foo")

convert.Pointer(1) // *int(1)

Collect

collect.Count()

collect.Count() 函数返回给定集合中的项目数:

import "github.com/goravel/framework/support/collect"

collect.Count([]string{"Goravel", "Framework"})
// 2

collect.CountBy()

collect.CountBy() 函数统计返回值为 true 的出现次数:

import "github.com/goravel/framework/support/collect"

collect.CountBy([]string{"Goravel", "Framework"}, func(value string) bool {
    return strings.Contains(value, "Goravel")
})
// 1

collect.Each()

collect.Each() 函数迭代给定集合中的项目,并将每个项目传递给给定的回调函数:

import "github.com/goravel/framework/support/collect"

collect.Each([]string{"Goravel", "Framework"}, func(value string, index int) {
    fmt.Println(index + 1, value)
})
// 1 Goravel
// 2 Framework

collect.Filter()

collect.Filter() 函数使用给定的回调函数过滤集合中的项目:

import "github.com/goravel/framework/support/collect"

newCollection := collect.Filter([]string{"Goravel", "Framework"}, func(value string) bool {
    return strings.Contains(value, "Goravel")
})

// []string{"Goravel"}

collect.GroupBy()

collect.GroupBy() 函数根据给定回调函数的结果对集合中的项目进行分组:

import "github.com/goravel/framework/support/collect"

// use example of complex map slice (use different example)
newCollection := collect.GroupBy([]map[string]string{
    {"class": "1", "Name": "Rohan"},
    {"class": "2", "Name": "Bowen"},
    {"class": "2", "Name": "Krishan"},
}, func(value map[string]string) string {
    return value["class"]
})

// map[string][]map[string]string{
//     "1": []map[string]string{{"class": "1", "Name": "Rohan"}},
//     "2": []map[string]string{{"class": "2", "Name": "Bowen"}, {"class": "2", "Name": "Krishan"}},
// }

collect.Keys()

collect.Keys() 函数返回集合中所有项目的键:

import "github.com/goravel/framework/support/collect"

keys := collect.Keys(map[string]string{"name": "Goravel", "language": "Go"})
// []string{"name", "language"}

collect.Map()

collect.Map() 函数使用给定的迭代器将一种类型的集合转换为另一种类型:

import "github.com/goravel/framework/support/collect"

newCollection := collect.Map([]string{"Goravel", "Framework"}, func(value string,  _ int) string {
    return strings.ToUpper(value)
})

// []string{"GORAVEL", "FRAMEWORK"}

collect.Max()

collect.Max() 函数返回给定集合的最大值:

import "github.com/goravel/framework/support/collect"

max := collect.Max([]int{1, 2, 3, 4, 5})
// 5

collect.Merge()

collect.Merge() 函数将给定的 map 合并为一个 map:

import "github.com/goravel/framework/support/collect"

newMap := collect.Merge(map[string]string{"name": "Goravel"}, map[string]string{"language": "Go"})
// map[string]string{"name": "Goravel", "language": "Go"}

newMap = collect.Merge(map[string]string{"name": "Goravel"}, map[string]string{"name": "Framework"})
// map[string]string{"name": "Framework"}

collect.Min()

collect.Min() 函数返回给定集合的最小值:

import "github.com/goravel/framework/support/collect"

min := collect.Min([]int{1, 2, 3, 4, 5})
// 1

collect.Reverse()

collect.Reverse() 函数反转集合中的项目:

import "github.com/goravel/framework/support/collect"

newCollection := collect.Reverse([]string{"Goravel", "Framework"})

// []string{"Framework", "Goravel"}

collect.Shuffle()

collect.Shuffle() 函数随机打乱集合中的项目:

import "github.com/goravel/framework/support/collect"

newCollection := collect.Shuffle([]int{1, 2, 3, 4, 5})

// []int{3, 1, 5, 2, 4}(example)

collect.Split()

collect.Split() 函数将集合分成给定长度的组。如果集合无法均匀分割,则最后一个块将包含剩余的项目:

import "github.com/goravel/framework/support/collect"

newCollection := collect.Split([]int{1, 2, 3, 4, 5}, 2)

// [][]int{{1, 2}, {3, 4}, {5}}

collect.Sum()

collect.Sum() 函数返回集合中所有项目的总和:


import "github.com/goravel/framework/support/collect"

sum := collect.Sum([]int{1, 2, 3, 4, 5})

// 15

collect.Unique()

collect.Unique() 函数返回无重复的集合,如果有重复值,则只保留第一次出现的值:

import "github.com/goravel/framework/support/collect"

newCollection := collect.Unique([]string{"Goravel", "Framework", "Goravel"})

// []string{"Goravel", "Framework"}

collect.Values()

collect.Values() 函数返回给定集合的所有值:

import "github.com/goravel/framework/support/collect"

values := collect.Values(map[string]string{"name": "Goravel", "language": "Go"})
// []string{"Goravel", "Go"}