{% macro book_cover(book, alt=None) -%} {%- set image_title = book.title if book.title else book.name -%} {%- set image_alt = alt if alt else image_title -%} {% set srcset = book|get_cover_srcset %} <img srcset="{{ srcset }}" src="{{ url_for('web.get_cover', book_id=book.id, resolution='og', c=book|last_modified) }}" alt="{{ image_alt }}" /> {%- endmacro %} {% macro series(series, alt=None) -%} {%- set image_alt = alt if alt else image_title -%} {% set srcset = series|get_series_srcset %} <img srcset="{{ srcset }}" src="{{ url_for('web.get_series_cover', series_id=series.id, resolution='og', c='day'|cache_timestamp) }}" alt="{{ book_title }}" /> {%- endmacro %}