handle missing tags

temp_index.py

@@ -52,6 +52,8 @@ def make_cards(filepath, db_path, side_a, side_b):
 
 
 def select_fields(fields, content, styles, book):
+    appended = True
+
     if "title" in fields:
         tag = "<font size=12>{}</font>".format(strip_tags(book.title))
         ptitle = Paragraph(tag, styles["Italic"])
@@ -87,13 +89,14 @@ def select_fields(fields, content, styles, book):
     if "tags" in fields:
         format_string = "<font size=10>{}</font>"
         all_tags = [strip_tags(tag.name) for tag in book.tags]
+        if not all_tags:
+            appended = False
         tags_glued_together = format_string.format(", ".join(all_tags))
-
         p = Paragraph(tags_glued_together, styles["Normal"])
         content.append(p)
         content.append(Spacer(6, 12))
 
-    return content
+    return content, appended
 
 
 def get_fields(db_path, side_a, side_b):
@@ -103,9 +106,10 @@ def get_fields(db_path, side_a, side_b):
     session = init_session(db_path)
 
     for book in session.query(Book).all():
-        content = select_fields(side_a, content, styles, book)
+        content, _ = select_fields(side_a, content, styles, book)
         content.append(PageBreak())
-        content = select_fields(side_b, content, styles, book)
+        content, appended = select_fields(side_b, content, styles, book)
+        if appended:
             content.append(PageBreak())
 
     return content