Reorganize: Move all skills to skills/ folder
- Created skills/ directory - Moved 272 skills to skills/ subfolder - Kept agents/ at root level - Kept installation scripts and docs at root level Repository structure: - skills/ - All 272 skills from skills.sh - agents/ - Agent definitions - *.sh, *.ps1 - Installation scripts - README.md, etc. - Documentation Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
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---
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name: obsidian-bases
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description: Create and edit Obsidian Bases (.base files) with views, filters, formulas, and summaries. Use when working with .base files, creating database-like views of notes, or when the user mentions Bases, table views, card views, filters, or formulas in Obsidian.
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---
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# Obsidian Bases Skill
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This skill enables skills-compatible agents to create and edit valid Obsidian Bases (`.base` files) including views, filters, formulas, and all related configurations.
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## Overview
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Obsidian Bases are YAML-based files that define dynamic views of notes in an Obsidian vault. A Base file can contain multiple views, global filters, formulas, property configurations, and custom summaries.
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## File Format
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Base files use the `.base` extension and contain valid YAML. They can also be embedded in Markdown code blocks.
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## Complete Schema
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```yaml
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# Global filters apply to ALL views in the base
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filters:
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# Can be a single filter string
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# OR a recursive filter object with and/or/not
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and: []
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or: []
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not: []
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# Define formula properties that can be used across all views
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formulas:
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formula_name: 'expression'
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# Configure display names and settings for properties
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properties:
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property_name:
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displayName: "Display Name"
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formula.formula_name:
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displayName: "Formula Display Name"
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file.ext:
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displayName: "Extension"
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# Define custom summary formulas
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summaries:
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custom_summary_name: 'values.mean().round(3)'
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# Define one or more views
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views:
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- type: table | cards | list | map
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name: "View Name"
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limit: 10 # Optional: limit results
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groupBy: # Optional: group results
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property: property_name
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direction: ASC | DESC
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filters: # View-specific filters
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and: []
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order: # Properties to display in order
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- file.name
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- property_name
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- formula.formula_name
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summaries: # Map properties to summary formulas
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property_name: Average
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```
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## Filter Syntax
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Filters narrow down results. They can be applied globally or per-view.
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### Filter Structure
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```yaml
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# Single filter
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filters: 'status == "done"'
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# AND - all conditions must be true
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filters:
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and:
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- 'status == "done"'
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- 'priority > 3'
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# OR - any condition can be true
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filters:
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or:
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- 'file.hasTag("book")'
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- 'file.hasTag("article")'
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# NOT - exclude matching items
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filters:
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not:
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- 'file.hasTag("archived")'
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# Nested filters
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filters:
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or:
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- file.hasTag("tag")
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- and:
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- file.hasTag("book")
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- file.hasLink("Textbook")
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- not:
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- file.hasTag("book")
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- file.inFolder("Required Reading")
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```
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### Filter Operators
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| Operator | Description |
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|----------|-------------|
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| `==` | equals |
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| `!=` | not equal |
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| `>` | greater than |
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| `<` | less than |
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| `>=` | greater than or equal |
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| `<=` | less than or equal |
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| `&&` | logical and |
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| `\|\|` | logical or |
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| <code>!</code> | logical not |
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## Properties
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### Three Types of Properties
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1. **Note properties** - From frontmatter: `note.author` or just `author`
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2. **File properties** - File metadata: `file.name`, `file.mtime`, etc.
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3. **Formula properties** - Computed values: `formula.my_formula`
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### File Properties Reference
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| Property | Type | Description |
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|----------|------|-------------|
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| `file.name` | String | File name |
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| `file.basename` | String | File name without extension |
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| `file.path` | String | Full path to file |
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| `file.folder` | String | Parent folder path |
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| `file.ext` | String | File extension |
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| `file.size` | Number | File size in bytes |
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| `file.ctime` | Date | Created time |
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| `file.mtime` | Date | Modified time |
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| `file.tags` | List | All tags in file |
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| `file.links` | List | Internal links in file |
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| `file.backlinks` | List | Files linking to this file |
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| `file.embeds` | List | Embeds in the note |
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| `file.properties` | Object | All frontmatter properties |
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### The `this` Keyword
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- In main content area: refers to the base file itself
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- When embedded: refers to the embedding file
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- In sidebar: refers to the active file in main content
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## Formula Syntax
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Formulas compute values from properties. Defined in the `formulas` section.
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```yaml
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formulas:
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# Simple arithmetic
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total: "price * quantity"
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# Conditional logic
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status_icon: 'if(done, "✅", "⏳")'
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# String formatting
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formatted_price: 'if(price, price.toFixed(2) + " dollars")'
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# Date formatting
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created: 'file.ctime.format("YYYY-MM-DD")'
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# Complex expressions
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days_old: '((now() - file.ctime) / 86400000).round(0)'
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```
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## Functions Reference
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### Global Functions
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `date()` | `date(string): date` | Parse string to date. Format: `YYYY-MM-DD HH:mm:ss` |
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| `duration()` | `duration(string): duration` | Parse duration string |
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| `now()` | `now(): date` | Current date and time |
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| `today()` | `today(): date` | Current date (time = 00:00:00) |
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| `if()` | `if(condition, trueResult, falseResult?)` | Conditional |
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| `min()` | `min(n1, n2, ...): number` | Smallest number |
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| `max()` | `max(n1, n2, ...): number` | Largest number |
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| `number()` | `number(any): number` | Convert to number |
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| `link()` | `link(path, display?): Link` | Create a link |
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| `list()` | `list(element): List` | Wrap in list if not already |
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| `file()` | `file(path): file` | Get file object |
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| `image()` | `image(path): image` | Create image for rendering |
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| `icon()` | `icon(name): icon` | Lucide icon by name |
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| `html()` | `html(string): html` | Render as HTML |
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| `escapeHTML()` | `escapeHTML(string): string` | Escape HTML characters |
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### Any Type Functions
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `isTruthy()` | `any.isTruthy(): boolean` | Coerce to boolean |
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| `isType()` | `any.isType(type): boolean` | Check type |
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| `toString()` | `any.toString(): string` | Convert to string |
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### Date Functions & Fields
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**Fields:** `date.year`, `date.month`, `date.day`, `date.hour`, `date.minute`, `date.second`, `date.millisecond`
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `date()` | `date.date(): date` | Remove time portion |
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| `format()` | `date.format(string): string` | Format with Moment.js pattern |
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| `time()` | `date.time(): string` | Get time as string |
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| `relative()` | `date.relative(): string` | Human-readable relative time |
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| `isEmpty()` | `date.isEmpty(): boolean` | Always false for dates |
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### Date Arithmetic
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```yaml
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# Duration units: y/year/years, M/month/months, d/day/days,
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# w/week/weeks, h/hour/hours, m/minute/minutes, s/second/seconds
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# Add/subtract durations
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"date + \"1M\"" # Add 1 month
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"date - \"2h\"" # Subtract 2 hours
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"now() + \"1 day\"" # Tomorrow
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"today() + \"7d\"" # A week from today
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# Subtract dates for millisecond difference
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"now() - file.ctime"
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# Complex duration arithmetic
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"now() + (duration('1d') * 2)"
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```
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### String Functions
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**Field:** `string.length`
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `contains()` | `string.contains(value): boolean` | Check substring |
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| `containsAll()` | `string.containsAll(...values): boolean` | All substrings present |
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| `containsAny()` | `string.containsAny(...values): boolean` | Any substring present |
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| `startsWith()` | `string.startsWith(query): boolean` | Starts with query |
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| `endsWith()` | `string.endsWith(query): boolean` | Ends with query |
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| `isEmpty()` | `string.isEmpty(): boolean` | Empty or not present |
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| `lower()` | `string.lower(): string` | To lowercase |
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| `title()` | `string.title(): string` | To Title Case |
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| `trim()` | `string.trim(): string` | Remove whitespace |
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| `replace()` | `string.replace(pattern, replacement): string` | Replace pattern |
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| `repeat()` | `string.repeat(count): string` | Repeat string |
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| `reverse()` | `string.reverse(): string` | Reverse string |
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| `slice()` | `string.slice(start, end?): string` | Substring |
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| `split()` | `string.split(separator, n?): list` | Split to list |
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### Number Functions
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `abs()` | `number.abs(): number` | Absolute value |
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| `ceil()` | `number.ceil(): number` | Round up |
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| `floor()` | `number.floor(): number` | Round down |
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| `round()` | `number.round(digits?): number` | Round to digits |
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| `toFixed()` | `number.toFixed(precision): string` | Fixed-point notation |
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| `isEmpty()` | `number.isEmpty(): boolean` | Not present |
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### List Functions
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**Field:** `list.length`
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `contains()` | `list.contains(value): boolean` | Element exists |
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| `containsAll()` | `list.containsAll(...values): boolean` | All elements exist |
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| `containsAny()` | `list.containsAny(...values): boolean` | Any element exists |
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| `filter()` | `list.filter(expression): list` | Filter by condition (uses `value`, `index`) |
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| `map()` | `list.map(expression): list` | Transform elements (uses `value`, `index`) |
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| `reduce()` | `list.reduce(expression, initial): any` | Reduce to single value (uses `value`, `index`, `acc`) |
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| `flat()` | `list.flat(): list` | Flatten nested lists |
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| `join()` | `list.join(separator): string` | Join to string |
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| `reverse()` | `list.reverse(): list` | Reverse order |
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| `slice()` | `list.slice(start, end?): list` | Sublist |
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| `sort()` | `list.sort(): list` | Sort ascending |
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| `unique()` | `list.unique(): list` | Remove duplicates |
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| `isEmpty()` | `list.isEmpty(): boolean` | No elements |
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### File Functions
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `asLink()` | `file.asLink(display?): Link` | Convert to link |
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| `hasLink()` | `file.hasLink(otherFile): boolean` | Has link to file |
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| `hasTag()` | `file.hasTag(...tags): boolean` | Has any of the tags |
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| `hasProperty()` | `file.hasProperty(name): boolean` | Has property |
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| `inFolder()` | `file.inFolder(folder): boolean` | In folder or subfolder |
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### Link Functions
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `asFile()` | `link.asFile(): file` | Get file object |
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| `linksTo()` | `link.linksTo(file): boolean` | Links to file |
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### Object Functions
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `isEmpty()` | `object.isEmpty(): boolean` | No properties |
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| `keys()` | `object.keys(): list` | List of keys |
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| `values()` | `object.values(): list` | List of values |
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### Regular Expression Functions
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| Function | Signature | Description |
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|----------|-----------|-------------|
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| `matches()` | `regexp.matches(string): boolean` | Test if matches |
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## View Types
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### Table View
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```yaml
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views:
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- type: table
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name: "My Table"
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order:
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- file.name
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- status
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- due_date
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summaries:
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price: Sum
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count: Average
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```
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### Cards View
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```yaml
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views:
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- type: cards
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name: "Gallery"
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order:
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- file.name
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- cover_image
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- description
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```
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### List View
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```yaml
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views:
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- type: list
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name: "Simple List"
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order:
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- file.name
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- status
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```
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### Map View
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Requires latitude/longitude properties and the Maps community plugin.
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```yaml
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views:
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- type: map
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name: "Locations"
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# Map-specific settings for lat/lng properties
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```
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## Default Summary Formulas
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| Name | Input Type | Description |
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|------|------------|-------------|
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| `Average` | Number | Mathematical mean |
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| `Min` | Number | Smallest number |
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| `Max` | Number | Largest number |
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| `Sum` | Number | Sum of all numbers |
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| `Range` | Number | Max - Min |
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| `Median` | Number | Mathematical median |
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| `Stddev` | Number | Standard deviation |
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| `Earliest` | Date | Earliest date |
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| `Latest` | Date | Latest date |
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| `Range` | Date | Latest - Earliest |
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| `Checked` | Boolean | Count of true values |
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| `Unchecked` | Boolean | Count of false values |
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| `Empty` | Any | Count of empty values |
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| `Filled` | Any | Count of non-empty values |
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| `Unique` | Any | Count of unique values |
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## Complete Examples
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### Task Tracker Base
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```yaml
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filters:
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and:
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- file.hasTag("task")
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- 'file.ext == "md"'
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formulas:
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days_until_due: 'if(due, ((date(due) - today()) / 86400000).round(0), "")'
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is_overdue: 'if(due, date(due) < today() && status != "done", false)'
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priority_label: 'if(priority == 1, "🔴 High", if(priority == 2, "🟡 Medium", "🟢 Low"))'
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properties:
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status:
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displayName: Status
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formula.days_until_due:
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displayName: "Days Until Due"
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formula.priority_label:
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displayName: Priority
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views:
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- type: table
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name: "Active Tasks"
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filters:
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and:
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- 'status != "done"'
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order:
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- file.name
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- status
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||||
- formula.priority_label
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||||
- due
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||||
- formula.days_until_due
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groupBy:
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property: status
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direction: ASC
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||||
summaries:
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formula.days_until_due: Average
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||||
- type: table
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||||
name: "Completed"
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filters:
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||||
and:
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||||
- 'status == "done"'
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||||
order:
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||||
- file.name
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||||
- completed_date
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||||
```
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||||
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||||
### Reading List Base
|
||||
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||||
```yaml
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||||
filters:
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||||
or:
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- file.hasTag("book")
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||||
- file.hasTag("article")
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||||
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||||
formulas:
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||||
reading_time: 'if(pages, (pages * 2).toString() + " min", "")'
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||||
status_icon: 'if(status == "reading", "📖", if(status == "done", "✅", "📚"))'
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||||
year_read: 'if(finished_date, date(finished_date).year, "")'
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||||
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||||
properties:
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||||
author:
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displayName: Author
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||||
formula.status_icon:
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||||
displayName: ""
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||||
formula.reading_time:
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||||
displayName: "Est. Time"
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||||
|
||||
views:
|
||||
- type: cards
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||||
name: "Library"
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||||
order:
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||||
- cover
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||||
- file.name
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||||
- author
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||||
- formula.status_icon
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||||
filters:
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||||
not:
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||||
- 'status == "dropped"'
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||||
|
||||
- type: table
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||||
name: "Reading List"
|
||||
filters:
|
||||
and:
|
||||
- 'status == "to-read"'
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||||
order:
|
||||
- file.name
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||||
- author
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||||
- pages
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||||
- formula.reading_time
|
||||
```
|
||||
|
||||
### Project Notes Base
|
||||
|
||||
```yaml
|
||||
filters:
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||||
and:
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||||
- file.inFolder("Projects")
|
||||
- 'file.ext == "md"'
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||||
|
||||
formulas:
|
||||
last_updated: 'file.mtime.relative()'
|
||||
link_count: 'file.links.length'
|
||||
|
||||
summaries:
|
||||
avgLinks: 'values.filter(value.isType("number")).mean().round(1)'
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||||
|
||||
properties:
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||||
formula.last_updated:
|
||||
displayName: "Updated"
|
||||
formula.link_count:
|
||||
displayName: "Links"
|
||||
|
||||
views:
|
||||
- type: table
|
||||
name: "All Projects"
|
||||
order:
|
||||
- file.name
|
||||
- status
|
||||
- formula.last_updated
|
||||
- formula.link_count
|
||||
summaries:
|
||||
formula.link_count: avgLinks
|
||||
groupBy:
|
||||
property: status
|
||||
direction: ASC
|
||||
|
||||
- type: list
|
||||
name: "Quick List"
|
||||
order:
|
||||
- file.name
|
||||
- status
|
||||
```
|
||||
|
||||
### Daily Notes Index
|
||||
|
||||
```yaml
|
||||
filters:
|
||||
and:
|
||||
- file.inFolder("Daily Notes")
|
||||
- '/^\d{4}-\d{2}-\d{2}$/.matches(file.basename)'
|
||||
|
||||
formulas:
|
||||
word_estimate: '(file.size / 5).round(0)'
|
||||
day_of_week: 'date(file.basename).format("dddd")'
|
||||
|
||||
properties:
|
||||
formula.day_of_week:
|
||||
displayName: "Day"
|
||||
formula.word_estimate:
|
||||
displayName: "~Words"
|
||||
|
||||
views:
|
||||
- type: table
|
||||
name: "Recent Notes"
|
||||
limit: 30
|
||||
order:
|
||||
- file.name
|
||||
- formula.day_of_week
|
||||
- formula.word_estimate
|
||||
- file.mtime
|
||||
```
|
||||
|
||||
## Embedding Bases
|
||||
|
||||
Embed in Markdown files:
|
||||
|
||||
```markdown
|
||||
![[MyBase.base]]
|
||||
|
||||
<!-- Specific view -->
|
||||
![[MyBase.base#View Name]]
|
||||
```
|
||||
|
||||
## YAML Quoting Rules
|
||||
|
||||
- Use single quotes for formulas containing double quotes: `'if(done, "Yes", "No")'`
|
||||
- Use double quotes for simple strings: `"My View Name"`
|
||||
- Escape nested quotes properly in complex expressions
|
||||
|
||||
## Common Patterns
|
||||
|
||||
### Filter by Tag
|
||||
```yaml
|
||||
filters:
|
||||
and:
|
||||
- file.hasTag("project")
|
||||
```
|
||||
|
||||
### Filter by Folder
|
||||
```yaml
|
||||
filters:
|
||||
and:
|
||||
- file.inFolder("Notes")
|
||||
```
|
||||
|
||||
### Filter by Date Range
|
||||
```yaml
|
||||
filters:
|
||||
and:
|
||||
- 'file.mtime > now() - "7d"'
|
||||
```
|
||||
|
||||
### Filter by Property Value
|
||||
```yaml
|
||||
filters:
|
||||
and:
|
||||
- 'status == "active"'
|
||||
- 'priority >= 3'
|
||||
```
|
||||
|
||||
### Combine Multiple Conditions
|
||||
```yaml
|
||||
filters:
|
||||
or:
|
||||
- and:
|
||||
- file.hasTag("important")
|
||||
- 'status != "done"'
|
||||
- and:
|
||||
- 'priority == 1'
|
||||
- 'due != ""'
|
||||
```
|
||||
|
||||
## References
|
||||
|
||||
- [Bases Syntax](https://help.obsidian.md/bases/syntax)
|
||||
- [Functions](https://help.obsidian.md/bases/functions)
|
||||
- [Views](https://help.obsidian.md/bases/views)
|
||||
- [Formulas](https://help.obsidian.md/formulas)
|
||||
Reference in New Issue
Block a user