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plainleaf/libraries/Library/Std/Infrastructure/Query Templates.md
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---
description: Implements generally useful query templates.
tags: meta
---
A work-in-progress library of generally useful templates for rendering queries.
```space-lua
-- priority: 10
-- Renders a page object as a linked list item
templates.pageItem = template.new([==[
* [[${name}]]
]==])
-- Renders a page object as a linked list item with full path
templates.fullPageItem = template.new([==[
* [[${name}|${name}]]
]==])
-- Renders a task object as a togglable task. Anchor refs are bare names
-- (no @ or #) — prefix them with $ so the resulting wikilink resolves
-- through the anchor index. Position/header refs already contain @ or #
-- and pass through unchanged.
templates.taskItem = template.new([==[
* [${state}] [[${string.find(ref, "[@#]") and ref or "$" .. ref}]] ${name}
]==])
-- Renders an item object
templates.itemItem = template.new([==[
* [[${string.find(ref, "[@#]") and ref or "$" .. ref}]] ${name}
]==])
-- Renders a paragraph object
templates.paragraphItem = template.new([==[
* [[${string.find(ref, "[@#]") and ref or "$" .. ref}]] ${text}
]==])
-- Renders a tag object
templates.tagItem = template.new([==[
* [[tag:${name}|#${name}]]
]==])
```
# Examples
`template.pageItem`:
${query[[from p = index.pages() limit 3 select templates.pageItem(p)]]}
`template.taskItem`:
* [ ] Task 1
* [ ] Task 2
${query[[from t = index.tasks() where t.page == _CTX.currentPage.name select templates.taskItem(t)]]}
`template.itemItem`:
* Item 1
* Item 2
${query[[from i = index.items() where i.page == _CTX.currentPage.name select templates.itemItem(i)]]}
`template.tagItem`:
* #tag1
* #tag2
* #tag3
${query[[from t = index.objects("tag") where t.page == _CTX.currentPage.name select templates.tagItem(t)]]}