Experimenting with sessions

go.mod

@@ -6,4 +6,4 @@ require github.com/go-chi/chi/v5 v5.0.14
 
 require github.com/justinas/nosurf v1.1.1
 
-require github.com/alexedwards/scs/v2 v2.8.0 // indirect
+require github.com/alexedwards/scs/v2 v2.8.0

pkg/handlers/handlers.go

@@ -29,6 +29,9 @@ func NewHandlers(r *Repository) {
 
 // Home is the about page handler
 func (m *Repository) Home(w http.ResponseWriter, r *http.Request) {
+	remoteIP := r.RemoteAddr
+	m.App.Session.Put(r.Context(), "remote_ip", remoteIP)
+
 	render.RenderTemplate(w, "home.page.tmpl", &models.TemplateData{})
 }
 
@@ -37,6 +40,10 @@ func (m *Repository) About(w http.ResponseWriter, r *http.Request) {
 	// perform some logic
 	stringMap := make(map[string]string)
 	stringMap["test"] = "Hello world!"
+
+	remoteIP := m.App.Session.GetString(r.Context(), "remote_ip")
+	stringMap["remote_ip"] = remoteIP
+
 	// send the data to the template
 	render.RenderTemplate(w, "about.page.tmpl", &models.TemplateData{StringMap: stringMap})
 }

templates/about.page.tmpl

@@ -7,6 +7,14 @@
             <p>This is the content</p>
 
             <p>This came from the template: {{index .StringMap "test"}}</p>
+
+            <p>
+                {{if ne (index .StringMap "remote_ip") ""}}
+                Your remote IP address is {{index .StringMap "remote_ip"}}
+                {{else}}
+                I don't know your ip address yet. Visit the <a href="/"></a> so I can set it.
+                {{end}}
+            </p>
         </div>
     </div>
 </div>