Rollups & the Portion dial

Two Property kinds for food and anything made of parts. A Rollup totals up an Entry's sub-entries (the calories of a dish = the sum of its ingredients). A Portion dial scales a whole food's macros at once — half a banana, 150 g of rice — with one slider.

Two Property kinds work together to make food tracking feel right: a Rollup adds your parts up into a total, and a Portion dial scales a whole food at once. Both are built for the dish-and-ingredients world that Sub-entries opened up, but each is useful on its own.

Rollup — total up your sub-entries

A Rollup is a read-only Property that shows one number rolled up from an Entry's sub-entries: the sum of every ingredient's calories, the average set's reps, the count of items. It watches the sub-entries and recomputes the instant they change — add an ingredient and the total moves on its own.

The headline case is a dish that totals its ingredients:

🍕  Margherita pizza
   🔥 Σ Ingredient kcal   573
   Ingredients
   ⠿  Pizza crust   130 g   🔥 350
   ⠿  Tomato sauce   40 g   🔥  25
   ⠿  Mozzarella     60 g   🔥 180
   ⠿  Olive oil       2 g   🔥  18

Edit the mozzarella, or add a drizzle of oil, and the 573 updates itself.

Add a Rollup

In the Type builder, add a Property and pick Rollup from the Computed group.
Choose three things: the child Type to total (e.g. Food — a dish's ingredients are just Food entries), the field on it (Calories), and the operation — Sum, Average, Min, Max, or Count.
That's it. Every Entry of this Type now shows the live total on its card, its page, and the table.

It never double-counts. A Rollup stores nothing of its own — it's just a live view of numbers that already live on the ingredients. So your daily calories stay correct whether you count the dish or its parts.

The Portion dial — scale a whole food at once

A whole banana is about 105 calories. But you might eat half (≈ 53) or two (≈ 210). A Portion dial captures how much you ate and scales every macro together — set it to ½ and the calories, protein, carbs, and fat all halve at once.

🍌  Banana            🔥 53
   Portion  [ 0.5× ]
   🥩 0.7   🍞 14   🥑 0.2

It works two ways, your choice per food:

Servings — a multiplier. Good for countable things: ½ a banana, 2 eggs.
Grams — the real weight. Good for weighed things: 150 g of chicken, 40 g of oats. (Macros are read per 100 g, the way nutrition labels are written.)

Either way the dial remembers your reference amount, so it can scale up and back down.

Add a Portion dial

In the Type builder, add a Property and pick Portion.
Choose which number fields it scales (Calories, Protein, Carbs, Fat) and the unit (Servings or Grams).
On any Entry, type the amount into the dial — it reads like any number field, no buttons — and every field it controls follows instantly.

The number you see is always what you actually ate — it's the real, counted value, so your daily and weekly totals reflect your true intake. Edit a macro directly and the dial quietly keeps itself consistent.

A field can be driven by at most one Portion dial, and the dial only ever scales the fields you chose — nothing else moves.