Sharing data with templates: cycle import error

This commit is contained in:
Muyao CHEN 2024-06-28 10:40:47 +02:00
parent 1dd22ba8db
commit 668e88e578
3 changed files with 22 additions and 3 deletions

View File

@ -6,6 +6,18 @@ import (
"net/http" "net/http"
) )
// TemplateData holds data sent from handlers to templates
type TemplateData struct {
StringMap map[string]string
IntMap map[string]int
FloatMap map[string]float32
Data map[string]interface{}
CSRFToken string
Flash string
Warning string
Error string
}
// Repo the repository used by the handlers // Repo the repository used by the handlers
var Repo *Repository var Repo *Repository
@ -28,10 +40,14 @@ func NewHandlers(r *Repository) {
// Home is the about page handler // Home is the about page handler
func (m *Repository) Home(w http.ResponseWriter, r *http.Request) { func (m *Repository) Home(w http.ResponseWriter, r *http.Request) {
render.RenderTemplate(w, "home.page.tmpl") render.RenderTemplate(w, "home.page.tmpl", &TemplateData{})
} }
// About is the about page handler // About is the about page handler
func (m *Repository) About(w http.ResponseWriter, r *http.Request) { func (m *Repository) About(w http.ResponseWriter, r *http.Request) {
render.RenderTemplate(w, "about.page.tmpl") // perform some logic
stringMap := make(map[string]string)
stringMap["test"] = "Hello world!"
// send the data to the template
render.RenderTemplate(w, "about.page.tmpl", &TemplateData{StringMap: stringMap})
} }

View File

@ -3,6 +3,7 @@ package render
import ( import (
"bytes" "bytes"
"go-udemy-web-1/pkg/config" "go-udemy-web-1/pkg/config"
"go-udemy-web-1/pkg/handlers"
"html/template" "html/template"
"log" "log"
"net/http" "net/http"
@ -17,7 +18,7 @@ func NewTemplates(a *config.AppConfig) {
} }
// RenderTemplate renders a HTML template file // RenderTemplate renders a HTML template file
func RenderTemplate(w http.ResponseWriter, tmpl string) { func RenderTemplate(w http.ResponseWriter, tmpl string, td *handlers.TemplateData) {
var tc map[string]*template.Template var tc map[string]*template.Template
if app.UseCache { if app.UseCache {
// get the template cache from the app config // get the template cache from the app config

View File

@ -5,6 +5,8 @@
<div class="col"> <div class="col">
<h1>This is the about page</h1> <h1>This is the about page</h1>
<p>This is the content</p> <p>This is the content</p>
<p>This came from the template: {{index .StringMap "test"}}</p>
</div> </div>
</div> </div>
</div> </div>