Templates

2015-11-12

Tags: docs advanced three

The create command adds sample templates to the templates directory. Of course, you can change them or create your own from scratch.

LitePub uses the Go html/template package to define the templates.

Design changes require no knowledge of Go templates. However changes that affect what data is displayed will require it less or more (depending on the change).

Structure

There are four required files in the templates directory:

templates/      # the templates and accompanying files (html, css, js, png, etc.)
   layout.tmpl
   index.tmpl
   post.tmpl
   tag.tmpl

• layout.tmpl defines the common layout for the home page (index.tmpl), post pages (post.tmpl) and tag pages (tag.tmpl)
• index.tmpl is used when generating the home page (index.html)
• post.tmpl is used when generating post pages
• and tag.tmpl is used when generating tag pages

Besides the four files there can be any number of html, css, js, png, etc. files that are used by the .tmpl files.

If you're not familiar with Go templates, some things in the next sections can be unclear.

Data

Templates have access to data they are meant to display. There are two types of data: Posts and Tags.

Posts

A Post has the following properties:

• Title - the post title
• Content - the content of the post as Markdown text
• Written - the post's date
• Tags - an array of tags the post is tagged with (can be empty)
• Draft - true if the post is a draft

To get a post's page URL in a template use the slug function (described below) like this: <a href="/{{.Title | slug}}.html">A Post</a>.

Tags

A Tag has the following properties:

• Name - the tag name
• Posts - an array of Posts that are tagged with the tag sorted by Written in descending order

To get a tag's page URL in a template use the slug function (described below) like this: <a href="/tags/{{.Name | slug}}.html">A Tag</a>.

The index.tmpl template has access to an array of Posts sorted by Written in descending order. The post.tmpl template has access to the Post it displays. The tag.tmpl template has access to the Tag it displays.

Functions

The index.tmpl, post.tmpl and tag.tmpl templates have access to the following functions:

html

Converts a Markdown string to a raw HTML, for example {{.Content | html}}.

summary

Extracts the first paragraph of a Markdown string that isn't a header (doesn't start with a #), for example {{.Content | summary | html}}.

even

Returns true if an integer is even, for example {{if even $i}}<divclass="row">{{end}}.

inc

Increments an integer by one, for example {{if or (eq (inc $i) $l) (not (even $i))}}</div>{{end}}.

slug

Slugifies a string, for example <a href="/{{.Title | slug}}.html">A Post</a>.

The available functions represent my needs when converting my handmade blog to a generated one.

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