From 9279ca5a27876ef9d6679485ffd86326b4842224 Mon Sep 17 00:00:00 2001 From: "Gerasimos (Makis) Maropoulos" Date: Wed, 13 Dec 2023 02:18:16 +0200 Subject: [PATCH] Add example of the powerful 'templ' generated templates --- _examples/README.md | 1 + _examples/view/templ/go.mod | 55 +++++++++ _examples/view/templ/go.sum | 181 ++++++++++++++++++++++++++++ _examples/view/templ/hello.templ | 5 + _examples/view/templ/hello_templ.go | 53 ++++++++ _examples/view/templ/main.go | 18 +++ aliases.go | 8 ++ context/context.go | 42 +++++-- core/router/api_builder.go | 4 + 9 files changed, 359 insertions(+), 8 deletions(-) create mode 100644 _examples/view/templ/go.mod create mode 100644 _examples/view/templ/go.sum create mode 100644 _examples/view/templ/hello.templ create mode 100644 _examples/view/templ/hello_templ.go create mode 100644 _examples/view/templ/main.go diff --git a/_examples/README.md b/_examples/README.md index 10539429..ab14753f 100644 --- a/_examples/README.md +++ b/_examples/README.md @@ -176,6 +176,7 @@ * Third-Parties * [Render `valyala/quicktemplate` templates](view/quicktemplate) * [Render `shiyanhui/hero` templates](view/herotemplate) + * [Render `a-h/templ` templates](view/templ) **NEW** * [Request ID](https://github.com/kataras/iris/blob/main/middleware/requestid/requestid_test.go) * [Request Rate Limit](request-ratelimit/main.go) * [Request Referrer](request-referrer/main.go) diff --git a/_examples/view/templ/go.mod b/_examples/view/templ/go.mod new file mode 100644 index 00000000..23e84247 --- /dev/null +++ b/_examples/view/templ/go.mod @@ -0,0 +1,55 @@ +module github.com/kataras/iris/v12/_examples/view/templ + +go 1.21 + +replace github.com/kataras/iris/v12 => ../../../ + +require ( + github.com/a-h/templ v0.2.476 + github.com/kataras/iris/v12 v12.2.9-0.20231212220110-7ffe4010b957 +) + +require ( + github.com/BurntSushi/toml v1.3.2 // indirect + github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53 // indirect + github.com/CloudyKit/jet/v6 v6.2.0 // indirect + github.com/Joker/jade v1.1.3 // indirect + github.com/Shopify/goreferrer v0.0.0-20220729165902-8cddb4f5de06 // indirect + github.com/andybalholm/brotli v1.0.6 // indirect + github.com/aymerick/douceur v0.2.0 // indirect + github.com/fatih/structs v1.1.0 // indirect + github.com/flosch/pongo2/v4 v4.0.2 // indirect + github.com/golang/snappy v0.0.4 // indirect + github.com/gomarkdown/markdown v0.0.0-20230922112808-5421fefb8386 // indirect + github.com/google/uuid v1.4.0 // indirect + github.com/gorilla/css v1.0.0 // indirect + github.com/iris-contrib/schema v0.0.6 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/kataras/blocks v0.0.8 // indirect + github.com/kataras/golog v0.1.11 // indirect + github.com/kataras/pio v0.0.13 // indirect + github.com/kataras/sitemap v0.0.6 // indirect + github.com/kataras/tunnel v0.0.4 // indirect + github.com/klauspost/compress v1.17.4 // indirect + github.com/mailgun/raymond/v2 v2.0.48 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/microcosm-cc/bluemonday v1.0.26 // indirect + github.com/russross/blackfriday/v2 v2.1.0 // indirect + github.com/schollz/closestmatch v2.1.0+incompatible // indirect + github.com/sirupsen/logrus v1.8.1 // indirect + github.com/tdewolff/minify/v2 v2.20.9 // indirect + github.com/tdewolff/parse/v2 v2.7.6 // indirect + github.com/valyala/bytebufferpool v1.0.0 // indirect + github.com/vmihailenco/msgpack/v5 v5.4.1 // indirect + github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect + github.com/yosssi/ace v0.0.5 // indirect + golang.org/x/crypto v0.16.0 // indirect + golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect + golang.org/x/net v0.19.0 // indirect + golang.org/x/sys v0.15.0 // indirect + golang.org/x/text v0.14.0 // indirect + golang.org/x/time v0.5.0 // indirect + google.golang.org/protobuf v1.31.0 // indirect + gopkg.in/ini.v1 v1.67.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/_examples/view/templ/go.sum b/_examples/view/templ/go.sum new file mode 100644 index 00000000..ec4ac65e --- /dev/null +++ b/_examples/view/templ/go.sum @@ -0,0 +1,181 @@ +github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8= +github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= +github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53 h1:sR+/8Yb4slttB4vD+b9btVEnWgL3Q00OBTzVT8B9C0c= +github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53/go.mod h1:+3IMCy2vIlbG1XG/0ggNQv0SvxCAIpPM5b1nCz56Xno= +github.com/CloudyKit/jet/v6 v6.2.0 h1:EpcZ6SR9n28BUGtNJSvlBqf90IpjeFr36Tizxhn/oME= +github.com/CloudyKit/jet/v6 v6.2.0/go.mod h1:d3ypHeIRNo2+XyqnGA8s+aphtcVpjP5hPwP/Lzo7Ro4= +github.com/Joker/hpp v1.0.0 h1:65+iuJYdRXv/XyN62C1uEmmOx3432rNG/rKlX6V7Kkc= +github.com/Joker/hpp v1.0.0/go.mod h1:8x5n+M1Hp5hC0g8okX3sR3vFQwynaX/UgSOM9MeBKzY= +github.com/Joker/jade v1.1.3 h1:Qbeh12Vq6BxURXT1qZBRHsDxeURB8ztcL6f3EXSGeHk= +github.com/Joker/jade v1.1.3/go.mod h1:T+2WLyt7VH6Lp0TRxQrUYEs64nRc83wkMQrfeIQKduM= +github.com/Shopify/goreferrer v0.0.0-20220729165902-8cddb4f5de06 h1:KkH3I3sJuOLP3TjA/dfr4NAY8bghDwnXiU7cTKxQqo0= +github.com/Shopify/goreferrer v0.0.0-20220729165902-8cddb4f5de06/go.mod h1:7erjKLwalezA0k99cWs5L11HWOAPNjdUZ6RxH1BXbbM= +github.com/a-h/templ v0.2.476 h1:+H4hP4CwK4kfJwXsE6kHeFWMGtcVOVoOm/I64uzARBk= +github.com/a-h/templ v0.2.476/go.mod h1:zQ95mSyadNTGHv6k5Fm+wQU8zkBMMbHCHg7eAvUZKNM= +github.com/ajg/form v1.5.1 h1:t9c7v8JUKu/XxOGBU0yjNpaMloxGEJhUkqFRq0ibGeU= +github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY= +github.com/andybalholm/brotli v1.0.6 h1:Yf9fFpf49Zrxb9NlQaluyE92/+X7UVHlhMNJN2sxfOI= +github.com/andybalholm/brotli v1.0.6/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig= +github.com/aymerick/douceur v0.2.0 h1:Mv+mAeH1Q+n9Fr+oyamOlAkUNPWPlA8PPGR0QAaYuPk= +github.com/aymerick/douceur v0.2.0/go.mod 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h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +moul.io/http2curl/v2 v2.3.0 h1:9r3JfDzWPcbIklMOs2TnIFzDYvfAZvjeavG6EzP7jYs= +moul.io/http2curl/v2 v2.3.0/go.mod h1:RW4hyBjTWSYDOxapodpNEtX0g5Eb16sxklBqmd2RHcE= diff --git a/_examples/view/templ/hello.templ b/_examples/view/templ/hello.templ new file mode 100644 index 00000000..e9203a95 --- /dev/null +++ b/_examples/view/templ/hello.templ @@ -0,0 +1,5 @@ +package main + +templ hello(name string) { +
Hello, { name }
+} \ No newline at end of file diff --git a/_examples/view/templ/hello_templ.go b/_examples/view/templ/hello_templ.go new file mode 100644 index 00000000..f1472a90 --- /dev/null +++ b/_examples/view/templ/hello_templ.go @@ -0,0 +1,53 @@ +// Code generated by templ - DO NOT EDIT. + +// templ: version: 0.2.476 +package main + +//lint:file-ignore SA4006 This context is only used if a nested component is present. + +import "github.com/a-h/templ" +import "context" +import "io" +import "bytes" + +func hello(name string) templ.Component { + return templ.ComponentFunc(func(ctx context.Context, templ_7745c5c3_W io.Writer) (templ_7745c5c3_Err error) { + templ_7745c5c3_Buffer, templ_7745c5c3_IsBuffer := templ_7745c5c3_W.(*bytes.Buffer) + if !templ_7745c5c3_IsBuffer { + templ_7745c5c3_Buffer = templ.GetBuffer() + defer templ.ReleaseBuffer(templ_7745c5c3_Buffer) + } + ctx = templ.InitializeContext(ctx) + templ_7745c5c3_Var1 := templ.GetChildren(ctx) + if templ_7745c5c3_Var1 == nil { + templ_7745c5c3_Var1 = templ.NopComponent + } + ctx = templ.ClearChildren(ctx) + _, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString("
") + if templ_7745c5c3_Err != nil { + return templ_7745c5c3_Err + } + templ_7745c5c3_Var2 := `Hello, ` + _, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ_7745c5c3_Var2) + if templ_7745c5c3_Err != nil { + return templ_7745c5c3_Err + } + _, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString("") + if templ_7745c5c3_Err != nil { + return templ_7745c5c3_Err + } + var templ_7745c5c3_Var3 string = name + _, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString(templ.EscapeString(templ_7745c5c3_Var3)) + if templ_7745c5c3_Err != nil { + return templ_7745c5c3_Err + } + _, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteString("
") + if templ_7745c5c3_Err != nil { + return templ_7745c5c3_Err + } + if !templ_7745c5c3_IsBuffer { + _, templ_7745c5c3_Err = templ_7745c5c3_Buffer.WriteTo(templ_7745c5c3_W) + } + return templ_7745c5c3_Err + }) +} diff --git a/_examples/view/templ/main.go b/_examples/view/templ/main.go new file mode 100644 index 00000000..40286d1c --- /dev/null +++ b/_examples/view/templ/main.go @@ -0,0 +1,18 @@ +package main + +import ( + "github.com/kataras/iris/v12" +) + +// 1. +// $ go install github.com/a-h/templ/cmd/templ@latest +// $ templ generate +// $ go run . +func main() { + component := hello("Makis") + + app := iris.New() + app.Get("/", iris.Component(component)) + + app.Listen(":8080") +} diff --git a/aliases.go b/aliases.go index 1acea298..ec0d0a45 100644 --- a/aliases.go +++ b/aliases.go @@ -293,6 +293,14 @@ type ( FallbackViewLayout = context.FallbackViewLayout ) +// Component returns a new Handler which can be registered as a main handler for a route. +// It's a shortcut handler that renders the given component as HTML through Context.RenderComponent. +func Component(component context.Component) Handler { + return func(ctx Context) { + ctx.RenderComponent(component) + } +} + // PrefixDir returns a new FileSystem that opens files // by adding the given "prefix" to the directory tree of "fs". // diff --git a/context/context.go b/context/context.go index 0e823034..80c0e72b 100644 --- a/context/context.go +++ b/context/context.go @@ -2,7 +2,7 @@ package context import ( "bytes" - stdContext "context" + "context" "encoding/json" "encoding/xml" "errors" @@ -78,7 +78,7 @@ type ( // BodyDecoderWithContext same as BodyDecoder but it can accept a standard context, // which is binded to the HTTP request's context. BodyDecoderWithContext interface { - DecodeContext(ctx stdContext.Context, data []byte) error + DecodeContext(ctx context.Context, data []byte) error } // Unmarshaler is the interface implemented by types that can unmarshal any raw data. @@ -275,8 +275,8 @@ func IsErrCanceled(err error) bool { var netErr net.Error return (errors.As(err, &netErr) && netErr.Timeout()) || - errors.Is(err, stdContext.Canceled) || - errors.Is(err, stdContext.DeadlineExceeded) || + errors.Is(err, context.Canceled) || + errors.Is(err, context.DeadlineExceeded) || errors.Is(err, http.ErrHandlerTimeout) || err.Error() == "closed pool" } @@ -437,7 +437,7 @@ var acquireGoroutines = func() interface{} { return &goroutines{wg: new(sync.WaitGroup)} } -func (ctx *Context) Go(fn func(cancelCtx stdContext.Context)) (running int) { +func (ctx *Context) Go(fn func(cancelCtx context.Context)) (running int) { g := ctx.values.GetOrSet(goroutinesContextKey, acquireGoroutines).(*goroutines) if fn != nil { g.wg.Add(1) @@ -448,7 +448,7 @@ func (ctx *Context) Go(fn func(cancelCtx stdContext.Context)) (running int) { ctx.waitFunc = g.wg.Wait - go func(reqCtx stdContext.Context) { + go func(reqCtx context.Context) { fn(reqCtx) g.wg.Done() @@ -4259,6 +4259,10 @@ func (h ErrorHandlerFunc) HandleContextError(ctx *Context, err error) { } func (ctx *Context) handleContextError(err error) { + if err == nil { + return + } + if errHandler := ctx.app.GetContextErrorHandler(); errHandler != nil { errHandler.HandleContextError(ctx, err) } else { @@ -4291,6 +4295,28 @@ func (ctx *Context) Render(statusCode int, r interface { } } +// Component is the interface which all components must implement. +// A component is a struct which can be rendered to a writer. +// It's being used by the `Context.RenderComponent` method. +// An example of compatible Component is a templ.Component. +type Component interface { + Render(context.Context, io.Writer) error +} + +// RenderComponent renders a component to the client. +// It sets the "Content-Type" header to "text/html; charset=utf-8". +// It reports any component render errors back to the caller. +// Look the Application.SetContextErrorHandler to override the +// default status code 500 with a custom error response. +func (ctx *Context) RenderComponent(component Component) error { + ctx.ContentType("text/html; charset=utf-8") + err := component.Render(ctx.Request().Context(), ctx.ResponseWriter()) + if err != nil { + ctx.handleContextError(err) + } + return err +} + // JSON marshals the given "v" value to JSON and writes the response to the client. // Look the Configuration.EnableProtoJSON and EnableEasyJSON too. // @@ -5387,7 +5413,7 @@ func (ctx *Context) ServeContent(content io.ReadSeeker, filename string, modtime // represents one byte. See "golang.org/x/time/rate" package. type rateReadSeeker struct { io.ReadSeeker - ctx stdContext.Context + ctx context.Context limiter *rate.Limiter } @@ -6460,7 +6486,7 @@ func (ctx *Context) User() User { } // Ensure Iris Context implements the standard Context package, build-time. -var _ stdContext.Context = (*Context)(nil) +var _ context.Context = (*Context)(nil) // Deadline returns the time when work done on behalf of this context // should be canceled. Deadline returns ok==false when no deadline is diff --git a/core/router/api_builder.go b/core/router/api_builder.go index f1523790..2bbe4174 100644 --- a/core/router/api_builder.go +++ b/core/router/api_builder.go @@ -1563,6 +1563,10 @@ type ( // // app.HandleServer("/api/identity", otherApp) func (api *APIBuilder) HandleServer(path string, server ServerHandler) { + if server == nil { + return + } + if app, ok := server.(serverBuilder); ok { // Do an extra check for Build() error at any case // the end-developer didn't call Build before.