hugo/content/en/content-management/page-resources.md
Bjørn Erik Pedersen 8d9511a08f Squashed 'docs/' changes from 39a7fac34..316cec249
316cec249 Update future events template example (#1595)
3bde7d489 Install mage outside module (#1592)
762e27eff Clarify ignoreFiles regex matching
4d0032051 Add id attribute to h2 elements (#1590)
8262b077c Improve inline resource examples (#1587)
2eae7c7ec fix disqus example name (#1588)
a772f4804 Added install instructions for openSUSE Tumbleweed (#1459)
7ad1c301b Remove screen capture from Hosting on GitHub page (#1586)
a58541f49 add more details on about gh-pages and baseURL on hosting-on-github.md (#1346)
3bd0b46dc Update configuration page (#1585)
4cf1f013e Update OS functions
2c45a95c2 Remove getting-started/code-toggle/
40fdff598 Describe artificial language private use subtags (#1577)
91011d210 Remove google_news from list of internal templates (#1576)
36c7879e4 Update the .Unix function
731063488 Remove a showcase
818c371a0 Update index.md
3136d39d9 netlify: Hugo 0.89.4
092bc9278 Merge branch 'tempv0.89.4'
18e01f105 releaser: Add release notes to /docs for release of 0.89.4
79135281f Correct and sort list of target image formats (#1574)
af4170c7e netlify: Hugo 0.89.3
7f5444251 Merge branch 'tempv0.89.3'
a32e4a6c2 releaser: Add release notes to /docs for release of 0.89.3
6dd3dc3f9 Update configuration.md
5fbe741d7 Update index.md (#1570)
37a69496f netlify: Bump to Hugo 0.89.2
3b293f1f4 Merge branch 'tempv0.89.2'
64c934e7a releaser: Add release notes to /docs for release of 0.89.2
919c51c7d Update index.md
13dd463b1 netlify: Hugo 0.89.1
d8cda1474 releaser: Add release notes to /docs for release of 0.89.1
a2adf7742 releaser: Add release notes to /docs for release of 0.89.1
c3088c4fc Add code toggle to menus page (#1568)
2d0f38978 Remove blank lines from code-toggle output (#1564)
7cf058bfd Add localization examples (#1563)
cf8627c2e Fixing typos, fixing incomplete link (#1561)
c78cc014b Document the removePathAccents setting
70beddaf4 Make corrections to 0.89.0 release notes (#1560)
1917195f0 Update index.md
7fb8e070c Run hugo --gc
1772d45fb Release 0.89.0
d9006179b Merge branch 'tempv0.89.0'
8db86b61e releaser: Add release notes to /docs for release of 0.89.0
abf268571 docs: Regen CLI docs
fbbdb0ab1 Update the timeout default
9cbd1c15a Fix description of lang.FormatNumberCustom
6043b54cc Remove "render" keyword from Host on Render page
f8ea8e84f Clarify description of front matter url (#1557)
91a0c9954 Update Twitter shortcode oEmbed endpoint
79a7405b8 Merge commit 'aa5ac36a3eb68b86c803caec703869efefc8447e'
57667bae6 hugofs: Add includeFiles and excludeFiles to mount configuration
0c9ee0a04 Allow multiple plugins in the PostCSS options map
155799e6b docs: Create path.Clean documentation

git-subtree-dir: docs
git-subtree-split: 316cec2494dc5f908283289371d74f36a73d3d8d
2021-12-08 08:42:31 +01:00

208 lines
7.1 KiB
Markdown

---
title : "Page Resources"
description : "Page resources -- images, other pages, documents, etc. -- have page-relative URLs and their own metadata."
date: 2018-01-24
categories: ["content management"]
keywords: [bundle,content,resources]
weight: 4003
draft: false
toc: true
linktitle: "Page Resources"
menu:
docs:
parent: "content-management"
weight: 31
---
Page resources are only accessible from [page bundles]({{< relref
"/content-management/page-bundles" >}}), those directories with `index.md` or
`_index.md` files at their root. Page resources are only available to the
page with which they are bundled.
In this example, `first-post` is a page bundle with access to 10 page resources including audio, data, documents, images, and video. Although `second-post` is also a page bundle, it has no page resources and is unable to directly access the page resources associated with `first-post`.
```text
content
└── post
├── first-post
│ ├── images
│ │ ├── a.jpg
│ │ ├── b.jpg
│ │ └── c.jpg
│ ├── index.md (root of page bundle)
│ ├── latest.html
│ ├── manual.json
│ ├── notice.md
│ ├── office.mp3
│ ├── pocket.mp4
│ ├── rating.pdf
│ └── safety.txt
└── second-post
└── index.md (root of page bundle)
```
## Properties
ResourceType
: The main type of the resource's [Media Type](/templates/output-formats/#media-types). For example, a file of MIME type `image/jpeg` has the ResourceType `image`. A `Page` will have `ResourceType` with value `page`.
{{< new-in "0.80.0" >}} Note that we in Hugo `v0.80.0` fixed a bug where non-image resources (e.g. video) would return the MIME sub type, e.g. `json`.
Name
: Default value is the filename (relative to the owning page). Can be set in front matter.
Title
: Default value is the same as `.Name`. Can be set in front matter.
Permalink
: The absolute URL to the resource. Resources of type `page` will have no value.
RelPermalink
: The relative URL to the resource. Resources of type `page` will have no value.
Content
: The content of the resource itself. For most resources, this returns a string
with the contents of the file. Use this to create inline resources.
```go-html-template
{{ with .Resources.GetMatch "script.js" }}
<script>{{ .Content | safeJS }}</script>
{{ end }}
{{ with .Resources.GetMatch "style.css" }}
<style>{{ .Content | safeCSS }}</style>
{{ end }}
{{ with .Resources.GetMatch "img.png" }}
<img src="data:{{ .MediaType }};base64,{{ .Content | base64Encode }}">
{{ end }}
```
MediaType
: The MIME type of the resource, such as `image/jpeg`.
MediaType.MainType
: The main type of the resource's MIME type. For example, a file of MIME type `application/pdf` has for MainType `application`.
MediaType.SubType
: The subtype of the resource's MIME type. For example, a file of MIME type `application/pdf` has for SubType `pdf`. Note that this is not the same as the file extension - PowerPoint files have a subtype of `vnd.mspowerpoint`.
MediaType.Suffixes
: A slice of possible suffixes for the resource's MIME type.
## Methods
ByType
: Returns the page resources of the given type.
```go
{{ .Resources.ByType "image" }}
```
Match
: Returns all the page resources (as a slice) whose `Name` matches the given Glob pattern ([examples](https://github.com/gobwas/glob/blob/master/readme.md)). The matching is case-insensitive.
```go
{{ .Resources.Match "images/*" }}
```
GetMatch
: Same as `Match` but will return the first match.
### Pattern Matching
```go
// Using Match/GetMatch to find this images/sunset.jpg ?
.Resources.Match "images/sun*"
.Resources.Match "**/sunset.jpg"
.Resources.Match "images/*.jpg"
.Resources.Match "**.jpg"
.Resources.Match "*" 🚫
.Resources.Match "sunset.jpg" 🚫
.Resources.Match "*sunset.jpg" 🚫
```
## Page Resources Metadata
The page resources' metadata is managed from the corresponding page's front matter with an array/table parameter named `resources`. You can batch assign values using [wildcards](https://tldp.org/LDP/GNU-Linux-Tools-Summary/html/x11655.htm).
{{% note %}}
Resources of type `page` get `Title` etc. from their own front matter.
{{% /note %}}
name
: Sets the value returned in `Name`.
{{% warning %}}
The methods `Match` and `GetMatch` use `Name` to match the resources.
{{%/ warning %}}
title
: Sets the value returned in `Title`
params
: A map of custom key/values.
### Resources metadata example
{{< code-toggle copy="false">}}
title: Application
date : 2018-01-25
resources :
- src : "images/sunset.jpg"
name : "header"
- src : "documents/photo_specs.pdf"
title : "Photo Specifications"
params:
icon : "photo"
- src : "documents/guide.pdf"
title : "Instruction Guide"
- src : "documents/checklist.pdf"
title : "Document Checklist"
- src : "documents/payment.docx"
title : "Proof of Payment"
- src : "**.pdf"
name : "pdf-file-:counter"
params :
icon : "pdf"
- src : "**.docx"
params :
icon : "word"
{{</ code-toggle >}}
From the example above:
- `sunset.jpg` will receive a new `Name` and can now be found with `.GetMatch "header"`.
- `documents/photo_specs.pdf` will get the `photo` icon.
- `documents/checklist.pdf`, `documents/guide.pdf` and `documents/payment.docx` will get `Title` as set by `title`.
- Every `PDF` in the bundle except `documents/photo_specs.pdf` will get the `pdf` icon.
- All `PDF` files will get a new `Name`. The `name` parameter contains a special placeholder [`:counter`](#the-counter-placeholder-in-name-and-title), so the `Name` will be `pdf-file-1`, `pdf-file-2`, `pdf-file-3`.
- Every docx in the bundle will receive the `word` icon.
{{% warning %}}
The __order matters__ --- Only the **first set** values of the `title`, `name` and `params`-**keys** will be used. Consecutive parameters will be set only for the ones not already set. In the above example, `.Params.icon` is first set to `"photo"` in `src = "documents/photo_specs.pdf"`. So that would not get overridden to `"pdf"` by the later set `src = "**.pdf"` rule.
{{%/ warning %}}
### The `:counter` placeholder in `name` and `title`
The `:counter` is a special placeholder recognized in `name` and `title` parameters `resources`.
The counter starts at 1 the first time they are used in either `name` or `title`.
For example, if a bundle has the resources `photo_specs.pdf`, `other_specs.pdf`, `guide.pdf` and `checklist.pdf`, and the front matter has specified the `resources` as:
{{< code-toggle copy="false">}}
[[resources]]
src = "*specs.pdf"
title = "Specification #:counter"
[[resources]]
src = "**.pdf"
name = "pdf-file-:counter"
{{</ code-toggle >}}
the `Name` and `Title` will be assigned to the resource files as follows:
| Resource file | `Name` | `Title` |
|-------------------|-------------------|-----------------------|
| checklist.pdf | `"pdf-file-1.pdf` | `"checklist.pdf"` |
| guide.pdf | `"pdf-file-2.pdf` | `"guide.pdf"` |
| other\_specs.pdf | `"pdf-file-3.pdf` | `"Specification #1"` |
| photo\_specs.pdf | `"pdf-file-4.pdf` | `"Specification #2"` |