3 files changed, 30 insertions, 1 deletions
diff --git a/frontend/renderer.go b/frontend/renderer.go
index a3aa83d..524c2c8 100644
--- a/frontend/renderer.go
+++ b/frontend/renderer.go
@@ -47,9 +47,16 @@ func New(path string) *Renderer {
                "html": func(in string) template.HTML {
                        return template.HTML(in)
                },
+                "add": func(a, b int) int {
+                        return a + b
+                },
+                "sub": func(a, b int) int {
+                        return a - b
+                },
        }
        r := &Renderer{
-                template.Must(template.ParseGlob(path + "/*")).Funcs(funcMap),
+                template.Must(template.New("").Funcs(funcMap).ParseGlob(path + "/*")),
                make(map[string]interface{}),
        }
diff --git a/modules/tags/tags.go b/modules/tags/tags.go
index aca1b44..527d1d9 100644
--- a/modules/tags/tags.go
+++ b/modules/tags/tags.go
@@ -69,6 +69,20 @@ func (m *Module) viewTagPage(w http.ResponseWriter, r *http.Request, p httproute
                pageNumber = 1
        }
+        // Anzahl an Pages holen
+        var pageNum int
+        err = m.g.DB.QueryRow(`SELECT COUNT(*) FROM grilist.grils_tags WHERE tag_id = $1`, tagID).Scan(&pageNum)
+        if err != nil {
+                log.Println("error getting page count", err)
+                http.Redirect(w, r, "/", 302)
+                return
+        }
+        pageCount := (int)((float64)(pageNum)/12.0 + 0.5)
+        if pageNumber > pageCount {
+                pageNumber = pageCount
+        }
        idList := make([]int, 0)
        rows, err := m.g.DB.Query(
                "SELECT gril_id FROM grilist.grils_tags WHERE tag_id = $1 LIMIT 12 OFFSET $2",
@@ -108,5 +122,7 @@ func (m *Module) viewTagPage(w http.ResponseWriter, r *http.Request, p httproute
        data["user"] = user
        data["tag"] = tag
        data["cards"] = cards
+        data["currentPage"] = pageNumber
+        data["pageCount"] = pageCount
        m.g.Renderer.RenderPage("tag", w, data)
 }
diff --git a/views/tag.html b/views/tag.html
index 788083f..3e89a7b 100644
--- a/views/tag.html
+++ b/views/tag.html
@@ -3,6 +3,7 @@
        <head>
                {{ template "materialize" }}
                <title>grilist</title>
+                <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
                <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
        </head>
        <body>
@@ -15,6 +16,11 @@
                                        {{ template "card" . }}
                                {{ end }}
                        </div>
+                        <ul class="pagination center-align">
+                                <li class="{{ if eq .currentPage 1 }}disabled{{ else }}waves-effect{{ end }}"><a href="/tag/{{ .tag }}/{{ sub .currentPage 1 }}"><i class="material-icons">chevron_left</i></a></li>
+                                <li class="active"><a href="#!">{{ .currentPage }}</a></li>
+                                <li class="{{ if eq .currentPage .pageCount }}disabled{{ else }}waves-effect{{ end }}"><a href="/tag/{{ .tag }}/{{ add .currentPage 1 }}"><i class="material-icons">chevron_right</i></a></li>
+                                </ul>
                        </div>
                </div>
        </body>