obsidian-bases

Create a .base file containing valid YAML with a filters section, a formulas section, and a views array. Each view specifies a type (table, cards, list, or map), an order list of properties to display, and optional grouping, limits, and summaries.

Define formulas under the formulas key using expressions like 'if(done, "✅", "⏳")' or date arithmetic such as '((now() - file.ctime) / 86400000).round(0)'. Reference them in views as formula.formula_name and use single quotes when the expression contains double quotes.

Bases filters support comparison operators (==, !=, >, <, >=, <=), logical operators (&&, ||, !), and file functions like file.hasTag(), file.inFolder(), and file.hasLink(). Filters can be nested with and, or, and not blocks, applied globally or per view.

Yes, the map view type displays notes as locations, but it requires latitude and longitude properties on the notes and the Maps plugin installed in Obsidian. Without those, use table, cards, or list views instead.

Most failures come from invalid YAML, usually unquoted formula strings containing double quotes or colons. Quote formulas with single quotes, verify the views array structure, and confirm referenced properties exist in your notes' frontmatter.