22.12.2018

bower_components/js/app.js

@@ -0,0 +1,7 @@
+$(function(){
+    $("#content").bind("input change", function(){
+        $.post("/getHtml", {md: $(this).val()}, function(resp){
+            $("#md").html(resp.html);
+        });
+    })
+});

helpers/utils.go

@@ -3,6 +3,8 @@ package helpers
 import (
 	"crypto/rand"
 	"fmt"
+
+	"github.com/russross/blackfriday"
 )
 
 func GenerateId() string {
@@ -10,3 +12,7 @@ func GenerateId() string {
 	rand.Read(b)
 	return fmt.Sprintf("%x", b)
 }
+
+func MarkdownToHtml(s string) string {
+	return string(blackfriday.MarkdownBasic([]byte(s)))
+}

main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"html/template"
 	"net/http"
 
 	"git.wmi.amu.edu.pl/s439508/Pracownia.Programowania/helpers"
@@ -31,18 +32,20 @@ func edit(rend render.Render, w http.ResponseWriter, r *http.Request, params mar
 	rend.HTML(http.StatusOK, "write", post)
 }
 
-func savePost(rend render.Render, w http.ResponseWriter, r *http.Request, params martini.Params) {
+func savePost(rend render.Render, w http.ResponseWriter, r *http.Request) {
 	id := r.FormValue("id")
 	title := r.FormValue("title")
-	content := r.FormValue("content")
+	contentMd := r.FormValue("content")
+	contentHtml := helpers.MarkdownToHtml(contentMd)
 
 	var post *models.Post
 	if id != "" {
 		post = posts[id]
 		post.Title = title
-		post.Content = content
+		post.ContentHtml = contentHtml
+		post.ContentMd = contentMd
 	} else {
-		post := models.NewPost(helpers.GenerateId(), title, content)
+		post := models.NewPost(helpers.GenerateId(), title, contentHtml, contentMd)
 		posts[post.Id] = post
 	}
 
@@ -60,16 +63,29 @@ func deletePost(rend render.Render, w http.ResponseWriter, r *http.Request, para
 	rend.Redirect("/")
 }
 
+func getHtmlPost(rend render.Render, w http.ResponseWriter, r *http.Request) {
+	md := r.FormValue("md")
+	rend.JSON(http.StatusOK, map[string]interface{}{
+		"html": helpers.MarkdownToHtml(md),
+	})
+}
+func unescape(s string) interface{} {
+	return template.HTML(s)
+}
+
 func main() {
 	posts = make(map[string]*models.Post, 0)
 
 	fmt.Println("Listening port 3000")
 	m := martini.Classic()
 
+	unescapeFuncMap := template.FuncMap{"unescape": unescape}
+
 	m.Use(render.Renderer(render.Options{
 		Directory:  "views",
 		Layout:     "layout",
 		Extensions: []string{".html"},
+		Funcs:      []template.FuncMap{unescapeFuncMap},
 		Charset:    "UTF-8",
 		IndentJSON: true,
 	}))
@@ -81,6 +97,7 @@ func main() {
 	m.Get("/edit/:id", edit)
 	m.Post("/savePost", savePost)
 	m.Get("/deletePost/:id", deletePost)
+	m.Post("/getHtml", getHtmlPost)
 
 	m.Run()
 }

models/post.go

@@ -1,11 +1,12 @@
 package models
 
 type Post struct {
-	Id      string
-	Title   string
-	Content string
+	Id          string
+	Title       string
+	ContentHtml string
+	ContentMd   string
 }
 
-func NewPost(id, title, content string) *Post {
-	return &Post{id, title, content}
+func NewPost(id, title, contentHtml, contentMd string) *Post {
+	return &Post{id, title, contentHtml, contentMd}
 }

views/index.html

@@ -10,7 +10,7 @@
 <div class="row">
         <div class="col-xs-2"></div>
         <div class="col-xs-8">
-            {{ $value.Content }}
+            {{ $value.ContentHtml | unescape }}
         </div>
 
         <div class="col-xs-2"></div>

views/layout.html

@@ -32,5 +32,6 @@
 
 <script src="/bower_components/jquery/dist/jquery.min.js"></script>
 <script src="/bower_components/bootstrap/dist/js/bootstrap.min.js"></script>
+<script src="/bower_components/js/app.js"></script>
 </body>
 </html>

views/write.html

@@ -1,5 +1,9 @@
 <div class="row">
-    <div class="col-xs-4"></div>
+    <div class="col-xs-2">
+        {{ if.Id }}
+        <a href="/deletePost/{{.Id}}">Delete</a>
+        {{ end }}
+    </div>
     <div class="col-xs-4">
         <form action="/savePost" method="POST" role="form">
             <input type="hidden" name="id" value="{{.Id}}"/>
@@ -9,15 +13,14 @@
             </div>
             <div class="form-group">
                 <label for="content">Content</label>
-                <textarea name="content" id="content">{{.Content}}</textarea>
+                <textarea name="content" id="content">{{.ContentMd}}</textarea>
             </div>
         <button type="submit" class="btn btn-default">Submit</button>
         </form>
     </div>
-    <div class="col-xs-4">
-        {{ if.Id }}
-        <a href="/deletePost/{{.Id}}">Delete</a>
-        {{ end }}
+    <div class="col-xs-6" id="md">
+        {{ .ContentHtml | unescape}}
+  
     </div>
 </div>