website/templates/book.html
{% extends "base.html" %} {% import "macros/book-outline.html" as book_outline %} {%- block head -%}{%- set page = page | default(value = section) -%} {%- set title = page.title -%} {%- set meta_article_type = true -%} {%- set meta_description = page.extra.summary | default(value = page.content | striptags | safe | linebreaksbr | replace(from = "
", to = " ") | replace(from = " ", to = " ") | trim | truncate(length = 200)) -%} {%- set css = ["/template/book.css", "/layout/reading-material.css", "/component/code-snippet.css"] -%} {%- set js = ["/js/template/book.js"] -%} {%- endblock head -%} {%- block content -%}{%- set page = page | default(value = section) -%} {#- Search this page-or-section's ancestor tree for a section that identifies itself as a book, and save it to a book variable -#} {%- for ancestor_path in page.ancestors | concat(with = page.relative_path) -%} {#- Get the ancestor section from this ancestor path string -#} {%- if ancestor_path is ending_with("/_index.md") -%} {%- set potential_book = get_section(path = ancestor_path) -%} {%- endif -%} {#- Check if the ancestor section is the root of a book, and if so, set it to a variable accessible outside the loop -#} {%- if potential_book.extra.book -%} {%- set_global book = get_section(path = potential_book.path ~ "_index.md" | trim_start_matches(pat = "/")) -%} {%- endif -%} {%- endfor -%} {#- Map this book's chapter path strings to an array of sections -#} {%- set chapters = [] -%} {%- for chapter_path in book.subsections -%} {%- set_global chapters = chapters | concat(with = get_section(path = chapter_path)) -%} {%- endfor -%} {%- set chapters = chapters | sort(attribute = "extra.order") -%} {#- A flat list of all pages in the ToC -#} {%- set flattened_outline = book_outline::flatten_book_outline(section = book) -%} {%- set flat_pages_list = book.path ~ ",,,,," ~ book.title ~ ";;;;;" ~ flattened_outline | split(pat = ";;;;;") -%} {%- set flat_index_of_this = 0 -%} {%- set flat_pages_path = [] -%} {%- set flat_pages_title = [] -%} {%- for item_str in flat_pages_list -%} {%- if item_str | trim | length > 0 -%} {%- set parts = item_str | split(pat = ",,,,,") -%} {%- if current_path == parts | first -%} {%- set_global flat_index_of_this = loop.index0 -%} {%- endif -%} {%- set_global flat_pages_path = flat_pages_path | concat(with = parts | first) -%} {%- set_global flat_pages_title = flat_pages_title | concat(with = parts | last) -%} {%- endif -%} {%- endfor -%}
{{ page.content | safe }}
{%- if flat_index_of_this >= 1 -%} {%- set prev_path = flat_pages_path | nth(n = flat_index_of_this - 1) -%} {%- set prev_title = flat_pages_title | nth(n = flat_index_of_this - 1) -%} {%- endif -%} {%- if prev_path %} {{ prev_title }} {%- else -%} {#- Spacer -#} {%- endif -%} {%- if flat_index_of_this < flat_pages_path | length - 1 -%} {%- set next_path = flat_pages_path | nth(n = flat_index_of_this + 1) -%} {%- set next_title = flat_pages_title | nth(n = flat_index_of_this + 1) -%} {%- endif -%} {%- if next_path %} {{ next_title }} {%- endif %}
{%- endblock content -%}