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Adds support to DocPad for rendering a document into multiple pages.

v2.4.0 Improvement.

- v2.4.0 March 1, 2015
    - B/C Deprecated `@getPageUrl` template helper and replaced it with `@getPagedUrl`. Allows usage of both unless there is a clash with another plugin [issue #10](https://github.com/docpad/docpad-plugi-paged/issues/10)
    - Prevent displaying URL compatibility warnings if compatibility is turned off in config
latest commit 5f0779024a
Daniel Smith StormPooper authored

README.md

Paged Plugin for DocPad

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This plugin provides DocPad with Paging. Documents can declare a number of pages that should be rendered for the document, or a collection over which the document should be rendered repeatedly.

Install

docpad install paged

Usage

Explanation

The Paged plugin works by scanning the meta data of your document and looking for the isPaged: true meta data attribute.

  • If you are wanting to page a listing of documents, then you would want to pass over thepagedCollection: 'collectionName' meta data attribute with the collection name being whatever collection you are listing.
  • If you are wanting to split the current document into multiple pages, then you want to specify the pageCount: 5 meta data attribute, where 5 is how many pages you want to have
  • You can also specify the pageSize: 5 meta data attribute (defaults to 1) which indicates how many max items should be listed on an individual page

That being done, paged will scan your documents in the renderBefore action and clone your paged document for each page that will be needed. Setting the following attributes for each page document:

{
    count: 10       # total number of pages
    size: 5         # expected number of documents per page
    number: 0       # current page number
    startIdx: 0     # position of the first item in this page
    endIdx: 5       # position of the last item in this page
    pages: [50,1]   # document ids for each of the pages
}

You will interact with the paged plugin via the following template helpers that the paged plugin defines for you:

  • hasPrevPage(document ?= @getDocument())
  • hasNextPage(document ?= @getDocument())
  • getPrevPage(document ?= @getDocument())
  • getNextPage(document ?= @getDocument())
  • getPagedUrl(pageNumber ?= 0, document ?= @getDocument())

It is important to note, that as the paged plugin clones the original document and injects the clones directly into the DocPad database, the extra pages (the clones) could appear in your content listings. To avoid this, be sure that your content listings filter out everything that has: isPagedAuto: true. For instance, a custom posts collection with the change applied would probably look like this:

module.exports =
    collections:
        posts: ->
            @getCollection('html').findAllLive(
                relativeOutDirPath: 'posts'
                isPagedAuto: $ne: true
            )

Example: Paging a Collection Listing

Here is an example where we say create a src/documents/posts.html.eco file that pages out our posts custom collection.

It will create documents for each page for the posts collection in groups of 3. The first 3 documents in the collection will be rendered into a file called posts.html as normal, then the remaining documents from the collection will be rendered into subsequent files posts.1.html, posts.2.html, posts.3.html etc.

---
title: 'Home'
layout: 'default'
isPaged: true
pagedCollection: 'posts'
pageSize: 3
---

<!-- Page Content -->
<% for document in @getPageCollection('posts').toJSON(): %>
    <article id="post" class="post">
        <h1><a href='<%=document.url%>'><%= document.title %></a></h1>
        <div class="post-date"><%= document.date.toLocaleDateString() %></div>
        <div class="post-content">
            <%- document.contentRenderedWithoutLayouts %>
        </div>
    </article>
<% end %>

<!-- Page Listing -->
<div class="pagination">
    <ul>
        <!-- Previous Page Button -->
        <% unless @hasPrevPage(): %>
            <li class="disabled"><span>Prev</span></li>
        <% else: %>
            <li><a href="<%= @getPrevPage() %>">Prev</a></li>
        <% end %>

        <!-- Page Number Buttons -->
        <% for pageNumber in [0..@document.page.count-1]: %>
            <% if @document.page.number is pageNumber: %>
                <li class="active"><span><%= pageNumber + 1 %></span></li>
            <% else: %>
                <li><a href="<%= @getPagedUrl(pageNumber) %>"><%= pageNumber + 1 %></a></li>
            <% end %>
        <% end %>

        <!-- Next Page Button -->
        <% unless @hasNextPage(): %>
            <li class="disabled"><span>Next</span></li>
        <% else: %>
            <li><a href="<%= @getNextPage() %>">Next</a></li>
        <% end %>
    </ul>
</div>

Example: Splitting a Document into Multiple Pages

In this example we will split up a document say src/documents/posts/awesome.html.eco into 3 pages that have a max of 3 items per page.

---
title: 'Awesome Pages Post'
layout: 'default'
isPaged: true
pageCount: 3
pageSize: 1
---

<!-- Page Content -->
<% if @document.page.number is 0: %>
    first awesome page
<% else if @document.page.number is 1: %>
    second awesome page
<% else if @document.page.number is 2: %>
    third awesome page
<% end %>

<!-- Page Listing -->
<div class="pagination">
    <ul>
        <!-- Previous Page Button -->
        <% unless @hasPrevPage(): %>
            <li class="disabled"><span>Prev</span></li>
        <% else: %>
            <li><a href="<%= @getPrevPage() %>">Prev</a></li>
        <% end %>

        <!-- Page Number Buttons -->
        <% for pageNumber in [0..@document.page.count-1]: %>
            <% if @document.page.number is pageNumber: %>
                <li class="active"><span><%= pageNumber + 1 %></span></li>
            <% else: %>
                <li><a href="<%= @getPagedUrl(pageNumber) %>"><%= pageNumber + 1 %></a></li>
            <% end %>
        <% end %>

        <!-- Next Page Button -->
        <% unless @hasNextPage(): %>
            <li class="disabled"><span>Next</span></li>
        <% else: %>
            <li><a href="<%= @getNextPage() %>">Next</a></li>
        <% end %>
    </ul>
</div>

Configure

For information on customising your plugin configuration you can refer to the DocPad FAQ

You can customise the URL format by setting custom preferences. The default configuration is:

split: true
prefix: ''
index: 1
compatibility: true

The examples below are with the Clean URLs Plugin installed to remove the file extensions, but each option also works without it. Each option is also compatible with CLean URLs Plugin's static redirection generation.

split

split: true: The url will be split into multple parts

For normal documents (e.g. archives.html), the generated url pattern will be:

  • /archives/
  • /archives/2/
  • /archives/3/
  • /archives/4/
  • etc...

For a document named index.html, the generated url pattern will be:

  • /
  • /2/
  • /3/
  • /4/
  • etc...

split: false: The url will be one single part

For normal documents (e.g. archives.html), the generated url pattern will be:

  • /archives
  • /archives.2/
  • /archives.3/
  • /archives.4/
  • etc...

For a document named index.html, the generated url pattern will be:

  • /
  • index.2/
  • index.3/
  • index.4/
  • etc...

index

Set index to set the page number for the index page.

For example, after setting index: 1, the generated url pattern will be:

  • /archives/
  • /archives/2/
  • /archives/3/
  • /archives/4/
  • etc...

After setting index: 0, the generated url pattern will be:

  • /archives/
  • /archives/1/
  • /archives/2/
  • /archives/3/
  • etc...

prefix

Set prefix to add a prefix path to the page numbers.

For example, after setting prefix: 'page', the generated url pattern will be:

  • /archives/
  • /archives/page/2/
  • /archives/page/3/
  • /archives/page/4/
  • etc...

compatibility

Set compatibility: true to maintain backwards compatbility with the older URL structure.

For example, when combined with prefix: 'page' and index: 1, the generated url will be:

  • /archives/
  • /archives/page/2/ (also available at /archives.1/)
  • /archives/page/3/ (also available at /archives.2/)
  • /archives/page/4/ (also available at /archives.3/)

NOTE: There is one configuration combination in which backwards-compatibility will not be enabled:

split: false
index: [anything other than 0]
prefix: ''
compatibility: true

Setting your configuration to the above will not create the secondary url for each page, to prevent it clashing with the primary url.

Set compatibility: false to prevent the additional urls being generated.

Combining settings

The settings can be combined to create alternative URL structure. For example, if we configure the plugin with the following options:

split: false
prefix: 'page.'
index: 0

The generated url pattern will be:

  • /archives
  • /archives.page.1/
  • /archives.page.2/
  • /archives.page.3/
  • etc...

History

Discover the change history by heading on over to the HISTORY.md file.

Contribute

Discover how you can contribute by heading on over to the CONTRIBUTING.md file.

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