UI Improvements. Incluing result limiting

src/interface/views.py

@@ -1,5 +1,6 @@
 import os
 
+from django.db import models
 from django.shortcuts import HttpResponse, render
 from django.utils.text import slugify
 
@@ -7,7 +8,17 @@ from .models import Books
 
 
 def index(request):
-    return render(request, "index.html", {"Books": Books.objects.all()})
+    return render(request, "index.html", {"Books": book_set()})
+    # return render(request, "index.html", {"Books": Books.objects.all()})
+
+
+def book_set(_limit=None, _set=1):
+    if _limit is None:
+        _limit = 20  # TODO default from user choice
+    _set_max = _set * _limit
+    _set_min = _set_max - _limit
+    books = Books.objects.all()[_set_min:_set_max]
+    return books
 
 
 def download(request, pk):
@@ -22,11 +33,3 @@ def download(request, pk):
 
 def hr_name(book):
     return "{0}.{1}".format(slugify(book.title), book.file_name.split(".")[1])
-
-
-def book_set(_set):
-    r = 20
-    x = _set * r
-    y = x + r
-    books = Books.objects.all()[x:y]
-    return books