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context.ViewData(key,value) and ViewLayout(layout) http://support.iris-go.com/d/27-using-middleware-to-inject-properties-for-templates/3

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Nothing that you couldn't do before.


Former-commit-id: 658ec25d8045d25a76f87c8f992e67e64006e287
This commit is contained in:
Gerasimos (Makis) Maropoulos
2017-03-28 07:53:57 +03:00
parent 126c4de29b
commit 57576c70cb
7 changed files with 261 additions and 13 deletions
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3
_examples/README.md
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@@ -38,12 +38,13 @@ It doesn't contains "best ways" neither explains all its features. It's just a s
* [Custom HTTP Server](intermediate/custom-httpserver/main.go)
* [View Engine](intermediate/view)
* [Overview](intermediate/view/overview/main.go)
* [Embedding Templates Into Executable](intermediate/embedding-templates-into-app)
* [Template HTML: Part Zero](intermediate/view/template_html_0/main.go)
* [Template HTML: Part One](intermediate/view/template_html_1/main.go)
* [Template HTML: Part Two](intermediate/view/template_html_2/main.go)
* [Template HTML: Part Three](intermediate/view/template_html_3/main.go)
* [Template HTML: Part Four](intermediate/view/template_html_4/main.go)
* [Inject Data Between Handlers](intermediate/view/context-view-data/main.go)
* [Embedding Templates Into Executable](intermediate/embedding-templates-into-app)
* [Custom Renderer](intermediate/view/custom-renderer/main.go)
* [Password Hashing](intermediate/password-hashing/main.go)
* [Sessions](intermediate/sessions)

58
_examples/intermediate/view/context-view-data/main.go Normal file
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@@ -0,0 +1,58 @@
// this example will show you how you can set per-request data for a template outside of the main handler which calls
// the .Render, via middleware.
//
// Remember: .Render has the "binding" argument which can be used to send data to the template at any case.
package main
import (
"time"
"gopkg.in/kataras/iris.v6"
"gopkg.in/kataras/iris.v6/adaptors/httprouter"
"gopkg.in/kataras/iris.v6/adaptors/view"
)
const (
DefaultTitle = "My Awesome Site"
DefaultLayout = "layouts/layout.html"
)
func main() {
app := iris.New()
// output startup banner and error logs on os.Stdout
app.Adapt(iris.DevLogger())
// set the router, you can choose gorillamux too
app.Adapt(httprouter.New())
// set the view engine target to ./templates folder
app.Adapt(view.HTML("./templates", ".html").Reload(true))
app.UseFunc(func(ctx *iris.Context) {
// set the title, current time and a layout in order to be used if and when the next handler(s) calls the .Render function
ctx.ViewData("Title", DefaultTitle)
now := time.Now().Format(app.Config.TimeFormat)
ctx.ViewData("CurrentTime", now)
ctx.ViewLayout(DefaultLayout)
ctx.Next()
})
app.Get("/", func(ctx *iris.Context) {
ctx.ViewData("BodyMessage", "a sample text here... setted by the route handler")
if err := ctx.Render("index.html", nil); err != nil {
app.Log(iris.DevMode, err.Error())
}
})
app.Get("/about", func(ctx *iris.Context) {
ctx.ViewData("Title", "My About Page")
ctx.ViewData("BodyMessage", "about text here... setted by the route handler")
// same file, just to keep things simple.
if err := ctx.Render("index.html", nil); err != nil {
app.Log(iris.DevMode, err.Error())
}
})
// Open localhost:8080 and localhost:8080/about
app.Listen(":8080")
}

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_examples/intermediate/view/context-view-data/templates/index.html Normal file
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@@ -0,0 +1,8 @@
<h1>
Title: {{.Title}}
</h1>
<h3>{{.BodyMessage}} </h3>
<hr/>
Current time: {{.CurrentTime}}

10
_examples/intermediate/view/context-view-data/templates/layouts/layout.html Normal file
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@@ -0,0 +1,10 @@
<html>
<head>
<title>My WebsiteLayout</title>
</head>
<body>
<!-- Render the current template here -->
{{ yield }}
</body>
</html>