improve paginator

1 files changed, 29 insertions, 14 deletions

diff --git a/bin/serve.fnl b/bin/serve.fnl
index 06ecd22..dde1138 100644
--- a/bin/serve.fnl
+++ b/bin/serve.fnl
@@ -310,15 +310,11 @@
                      "₽ за 1 гр.)")]
      "")]])
 
-(fn paginator-template [form page limit total]
+(fn paginator-template [form page limit total max-numbers]
   (local last-page (math.ceil (/ total limit)))
-
-  (if (< limit total)
-    [:div {:class "paginator"}
-     [:div {:class "paginator-numbers"}
-      (if (< 1 page)
-       [:a {:href (form->path (- page 1) form)} "←"]
-       "")
+  (local radius (math.floor (/ (- max-numbers 4) 2)))
+  (local number-items
+    (if (<= last-page max-numbers)
       (faccumulate [res [:span {}] i 1 last-page]
        (do
          (table.insert
@@ -326,9 +322,29 @@
                     :class (if (= page i) "paginator-active" "")}
                 (tostring i)])
          res))
-      (if (< page last-page)
-       [:a {:href (form->path (+ page 1) form)} "→"]
-       "")]
+      [:span {}
+       (table.unpack
+        (array.concat
+          (if (< (+ 1 radius) page)
+            [[:a {:href (form->path 1 form)} "1"]
+             (if (< (+ 2 radius) page) "…" "")]
+            [])
+          (faccumulate [res [] i (math.max 1 (- page radius))
+                                 (math.min last-page (+ page radius))]
+           (do
+             (table.insert
+               res [:a {:href (form->path i form)
+                        :class (if (= page i) "paginator-active" "")}
+                    (tostring i)])
+             res))
+          (if (< radius (- last-page page))
+            [(if (< (+ 1 radius) (- last-page page)) "…" "")
+             [:a {:href (form->path last-page form)} (tostring last-page)]]
+            [])))]))
+
+  (if (< limit total)
+    [:div {:class "paginator"}
+     [:div {:class "paginator-numbers"} number-items]
      [:div {} "Всего: " [:strong {} (string.format "%d" total)]]]
     ""))
 
@@ -406,7 +422,6 @@
     paginator]])
 
 (fn base-template [form path page total items text]
-  (local paginator (paginator-template form page 48 total))
   (local menu-path
    (if (and form.tags (< 0 (# form.tags)))
     (category-menu-path (. form.tags 1))
@@ -434,7 +449,7 @@
    [:body {}
     [:div {:class "container"}
      [:div {:class "content"}
-      (aside-template form path paginator)
+      (aside-template form path (paginator-template form page 48 total 7))
       [:main {}
        (menu-template path)
        [:article {:class "description"}
@@ -457,7 +472,7 @@
                            spellfix-suggestion
                            spellfix-suggestion)]
           [:NO-ESCAPE texts.no-results])])
-       [:div {} paginator]
+       [:div {} (paginator-template form page 48 total 17)]
        [:footer {}
         [:small {:class "text"} [:NO-ESCAPE texts.footer-text]]]]]]]])