# Decade Collections

The `decade` Default Collection File is used to dynamically create collections based on the decades available in your library, sorted by critic rating to create a "best of <decade>"

**This file works has a Show Library [Counterpart](../show/decade.md).**

![](../images/decade.png)

## Requirements & Recommendations

Supported Library Types: Movie

## Collections Section 100

| Collection                                           | Key                               | Description                                                                 |
|:-----------------------------------------------------|:----------------------------------|:----------------------------------------------------------------------------|
| `Decade Collections`                                 | `separator`                       | [Separator Collection](../separators.md) to denote the Section of Collections. |
| `Best of <<Decade>>`<br>**Example:** `Best of 2020s` | `<<Year>>`<br>**Example:** `2020` | Collection of Movies released in this Decade.                               |

## Config

The below YAML in your config.yml will create the collections:

```yaml
libraries:
  Movies:
    collection_files:
      - pmm: decade
```

## Template Variable Default Values

Template Variables can be used to manipulate the file in various ways to slightly change how it works without having to make your own local copy.

This file contains a [Separator](../separators.md) so all [Shared Separator Variables](../separators.md#shared-separator-variables) are available as well.

| Variable                      | Description & Values                                                                                                                                                                                                       |
|:------------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `limit`                       | **Description:** Changes the Builder Limit for all collections in a Defaults file.<br>**Default:** `100`<br>**Values:** Number Greater than 0                                                                              |
| `limit_<<key>>`<sup>1</sup>   | **Description:** Changes the Builder Limit of the specified key's collection.<br>**Default:** `limit`<br>**Values:** Number Greater than 0                                                                                 |
| `sort_by`                     | **Description:** Changes the Smart Filter Sort for all collections in a Defaults file.<br>**Default:** `critic_rating.desc`<br>**Values:** [Any `smart_filter` Sort Option](../../builders/smart.md#sort-options) |
| `sort_by_<<key>>`<sup>1</sup> | **Description:** Changes the Smart Filter Sort of the specified key's collection.<br>**Default:** `sort_by`<br>**Values:** [Any `smart_filter` Sort Option](../../builders/smart.md#sort-options)                 |
| `exclude`                     | **Description:** Exclude these Decades from creating a Dynamic Collection.<br>**Values:** List of Decades found in your library                                                                                            |
| `name_format`                 | **Description:** Changes the title format of the Dynamic Collections.<br>**Default:** `Best of <<key_name>>`<br>**Values:** Any string with `<<key_name>>` in it.                                                          |
| `summary_format`              | **Description:** Changes the summary format of the Dynamic Collections.<br>**Default:** `Top <<limit>> <<library_translation>>s of the <<key_name>>.`<br>**Values:** Any string.                                           |

1. Each default collection has a `key` that when calling to effect a specific collection you must replace `<<key>>` with when calling.

{%
   include-markdown "../collection_variables.md"
%}
### Example Template Variable Amendments

The below is an example config.yml extract with some Template Variables added in to change how the file works.

???+ tip

    Anywhere you see this icon:
   
    > :fontawesome-solid-circle-plus:
   
    That's a tooltip, you can press them to get more information.

```yaml
libraries:
  Movies:
    collection_files:
      - pmm: year
        template_variables:
          sep_style: purple #(1)!
          sort_by: title.asc 
          sort_by_2020: release.desc #(2)!
```

1.  Use the purple [Separator Style](../separators.md#separator-styles)
2.  Set the sort order for "Best of 2020s" to release date descending