Photish
Photish is a simple, convention based (but configurable) static photo site generator. Photish allows you to group your photo collections by folder. Metadata can be written alongside the photo in a YAML file with the same name as the photo.
Photish will crawl through your directory of photos and metadata, and render the information in your website templates. Photish supports all template engines implemented by Tilt (currently over 30 formats). It will also read your configuration and automatically convert your images to your configured size, dimensions, colourscheme, etc using ImageMagick or GraphicsMagick. Using this information, Photish creates a complete static website that can be hosted on an NGINX, Apache HTTP Server, or even on Github Pages.
Photish has been created with speed and efficiency in mind. Threads are used to parallelize image transcoding to achieve maximum utilization of your CPU during generation. A cache file is then used to ensure that unless the image has changed, it is not needlessly regenerated. This results in a responsive and fast local development environment, making it easy to perfect the design of your photo based website without having to wait for regeneration.
Example
Photish Montage - A quick mockup to show what can be done with Photish. Source here.
Getting Started
It is strongly recommended to read through the Installation and Usage sections before seriously using Photish, however to get up and running:
- Ensure ImageMagick (or GraphicsMagick) and Exiftool are installed (see Dependencies)
- Install Photish with
gem install photish
or with a native installer - Create a base project with
photish init --example
- Generate the HTML using
photish generate
- Run a local HTTP server to view the site with
photish host
- View your photo site at http://localhost:9876
Project Health
Category | Purpose | Badge |
---|---|---|
Package | RubyGem |
| Debian | [![Download](https://api.bintray.com/packages/henrylawson/deb/photish/images/download.svg)](https://bintray.com/henrylawson/deb/photish/_latestVersion)
| RPM | [![Download](https://api.bintray.com/packages/henrylawson/rpm/photish/images/download.svg)](https://bintray.com/henrylawson/rpm/photish/_latestVersion)
CI/CD Pipeline | Main Build, Package and Release | | JRuby & Rubinius Builds | | Windows Build | Code Quality | Dependency Versions | | Code Climate GPA | | Test Coverage | | Quality Metrics |
Documentation
- Overview
- Latest Version
- Installation
- Dependencies
- Ruby Gem
- Debian Package
- RPM Package
- Linux Binaries
- Windows Binaries
- Usage
- Initialize
- Basic Photish Structure
- Template Engines
- Site Assets
- Config File Options
- Customizing Templates
- Layout Template
- Collection Template
- Album Template
- Photo Template
- Template Helpers
- Custom Rendered Content
- Gallery Page
- Asset Page
- Generate
- Execution Order
- Image Conversion Tools
- Workers and Threads
- Caching
- Automatic Rengeneration
- Forced Regeneration
- Crude Performance Measures
- Host
- Deploy
- Rake Task
- Plugins
- Template Helper Plugins
- Deployment Engine Plugins
- Plugin Loading
- Initialize
- Development
- Code Changes
- Services
- Contributing
- Versioning
- License
Overview
Photish turns this:
./my_new_photo_site
├── config.yml
├── photos
│ ├── Big Dogs
│ │ ├── Tired Dogs.jpg
│ │ └── Winking Dog.jpg
│ └── Small Dogs
│ ├── Fluffy Dogs
│ │ ├── Exhausted Dogs.jpg
│ │ ├── Exhausted Dogs.yml
│ │ ├── Many Dogs.jpg
│ │ └── Many Dogs.yml
│ ├── Sleepy Dog.jpg
│ ├── Sleepy Dog.yml
│ └── Squishy Dogs
│ └── Big Ear Dog.jpg
└── site
├── _templates
│ ├── album.slim
│ ├── collection.slim
│ ├── layout.slim
│ └── photo.slim
├── custom.html
├── images
│ └── crumbs.gif
└── styles
└── basic.css
Into this:
./my_new_photo_site
└── output
├── big-dogs
│ ├── index.html
│ ├── tired-dogs
│ │ ├── images
│ │ │ ├── tired-dogs-low.jpg
│ │ │ └── tired-dogs-original.jpg
│ │ └── index.html
│ └── winking-dog
│ ├── images
│ │ ├── winking-dog-low.jpg
│ │ └── winking-dog-original.jpg
│ └── index.html
├── custom.html
├── index.html
├── small-dogs
│ ├── fluffy-dogs
│ │ ├── exhausted-dogs
│ │ │ ├── images
│ │ │ │ ├── exhausted-dogs-low.jpg
│ │ │ │ └── exhausted-dogs-original.jpg
│ │ │ └── index.html
│ │ ├── index.html
│ │ └── many-dogs
│ │ ├── images
│ │ │ ├── many-dogs-low.jpg
│ │ │ └── many-dogs-original.jpg
│ │ └── index.html
│ ├── index.html
│ ├── sleepy-dog
│ │ ├── images
│ │ │ ├── sleepy-dog-low.jpg
│ │ │ └── sleepy-dog-original.jpg
│ │ └── index.html
│ └── squishy-dogs
│ ├── big-ear-dog
│ │ ├── images
│ │ │ ├── big-ear-dog-low.jpg
│ │ │ └── big-ear-dog-original.jpg
│ │ └── index.html
│ └── index.html
├── images
│ └── crumbs.gif
└── styles
└── basic.css
A breakdown of the before and after is as follows:
- For the Collection of photos in "Photos" an index.html was created
- For each Album (that is a folder in the "Photos" collection), an index.html was created in a slugified sub folder
- For each Photo (an image file in the album), another index.html was created in a slugified sub folder named after the original photo
- For each of these Photos, a version of the Image was made in both "low" and "original" quality in a sub folder called images
The number of Images and the quality of each is completely configurable. Using the templating language of your choice you can easily generate a Photo collection driven website with all of your photos available in various qualities and formats.
Latest Version
Photish follows Semantic Versioning 2.0.0.
Releases happen regularly and automatically from Snap-CI.
The latest version is published with artifacts on GitHub.
Installation
Photish is available across all platforms as a Ruby Gem. The recommended installation is the Ruby Gem as not all features are currently available on the platform native packages.
For convenience Photish is also packaged in platform native installers. The platform native installers come with all the Ruby Gems and Ruby runtime bundled inside the package. This means you simply need to install the package and you can immediately use Photish without having to configure Ruby or any Gems, this is done using Travelling Ruby.
Instructions are provided for each platform native installation:
- Debian Package
- RPM Package
- Linux Binaries
- Windows Binaries
Dependencies
Photish has dependencies on certain software:
- ImageMagick or GraphicsMagick for image conversion
- Exiftool for image metadata retrieval
These packages are not listed as hard dependencies in any of the provided packages as it is only needed during runtime, and in the case of Exiftool, if Exif Metadata is not read during the generation of any templates, the dependency is not required.
On MacOSX, using Brew
$ brew install imagemagick # or brew install graphicsmagick
$ brew install exiftool
On Ubuntu or Debian
$ sudo apt-get install imagemagick # or sudo apt-get install graphicsmagick
$ sudo apt-get install libimage-exiftool-perl
On CentOS, RedHat, etc.
$ sudo yum install ImageMagick
$ sudo yum install perl-Image-ExifTool
On Windows
Please check the dependencies website for the latest Windows installation steps.
Ruby Gem
Photish supports multiple ruby versions:
Ruby Version | Minimum | Maximum | Comments |
---|---|---|---|
MRI Ruby | 2.0 | HEAD | Very stable, all tests pass consistently |
JRuby | 9.0 | HEAD | Mostly stable, smoke test passes consistently, full feature test flakey |
Rubinius | 2.0 | HEAD | Mostly stable, smoke test passes consistently, full feature test flakey |
The latest version and all releases of Photish are tested against the above ruby versions in the CI pipeline.
Before installing Photish, ensure you have the latest version of Bundler for your ruby version.
Install the gem locally by running:
$ gem install photish
Alternatively, use Bundler. Create a folder for your photo site so you can track the version of Photish you are building with:
$ mkdir my_new_photo_site
$ cd my_new_photo_site
$ bundle init
$ echo 'gem "photish"' >> Gemfile
$ bundle install
Debian Package
The latest Debian package for amd64 and i386 architectures is available on Bintray and uploaded to the latest Photish Github Release.
To be up to date with the latest version of Photish, we recommend you add our Debian repository and install using apt-get:
$ # add the repository and SSH key
$ echo "deb https://dl.bintray.com/henrylawson/deb all main" | sudo tee -a /etc/apt/sources.list
$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F608A664B7DFFFEA
$
$ # update keys and latest packages
$ sudo apt-get update && sudo apt-key update
$
$ # install photish
$ sudo apt-get install photish
If you have downloaded the *.deb file, simply install it with dpkg
:
$ sudo dpkg -i photish*.deb
RPM Package
The latest RPM package for x86_64 and i386 architectures is available on Bintray and uploaded to the latest Photish Github Release.
To be up to date with the latest version of Photish, we recommend you add our YUM repository and install using yum:
$ # add the repository and SSH key
$ wget https://bintray.com/henrylawson/rpm/rpm -O bintray-henrylawson-rpm.repo
$ sudo mv bintray-henrylawson-rpm.repo /etc/yum.repos.d/
$
$ # install photish
$ sudo yum install -y photish
If you have downloaded the *.rpm file, simply install it with rpm
:
$ sudo rpm -Uh photish*.rpm
Linux Binaries
If you are using a distribution of Linux that we do not have a native package installer for, you can manually install Photish and use it by downloading the Photish x64 and x86 binaries from the Photish Github Release.
You can then extract the binaries to your desired location and use them.
$ tar -zxf photish-*-linux-*.tar.gz -C /destination
Windows Binaries
If you are using Windows, you can manually install Photish and use it by downloading the Photish x86 binaries from the Photish Github Release.
You can then extract the binaries to your desired location and use them.
Usage
Once you have photish installed. Get started with the following commands:
Initialize
A skeleton site can be created by running the below command inside the
my_new_photo_site
folder:
$ photish init --example
A barebones site can be created with:
$ photish init
Basic Photish Structure
Inside your my_new_photo_site
folder, you will have a:
File or Folder | Purpose |
---|---|
photos |
folder, for your photo collection and metadata |
site |
folder for your templates, assets and static pages |
site/_plugins |
folder for plugins to be loaded from |
site/_templates |
folder for your templates |
site/_templates/layout.slim |
file for the basic layout for all pages |
site/_templates/collection.slim |
template file for your collection page |
site/_templates/album.slim |
template file for your album page(s) |
site/_templates/photo.slim |
template file for your photo page(s) |
config.yml |
file to store all configuration in YAML format |
Template Engines
By default Photish uses Slim as the template language. The templates can be in any format supported by Tilt. To use a different template language:
- Create a
layout
,collection
,album
andphoto
file in thesite/_templates
folder, with the file extension of the template engine you prefer, supported extensions are documented by Tilt - Update
config.yml
to reference your newly created template files - Re write the basic template code in your chosen language
Site Assets
Any content not starting with an _
(underscore) in the site
folder will be
copied to the output
folder.
In the example in the Overview section. There are a few static asset files. These are:
site/styles/basic.css
site/images/crumbs.gif
site/custom.html
Both of these files were copied by Photish to the output folder, respecting their folder/file hierarchy:
output/styles/basic.css
site/custom.html
As documented in the Generate section, assets are copied before the site content is generated. If an asset has a conflicting name and path with a generated file, the generated file will clobber the asset.
Config File Options
The default way to express config is in the config.yml
file. However config
can also be overridden using the --config_override
flag to any of the Photish
commands. When using the --config_override
flag, the config must be expressed
as JSON. For example, to override logging when calling
the Generate command, you can use:
$ photish generate --config_override='{"logging":{"colorize":false}}'
This method of config override is only recommended for cases where the value needs to be temporarily overridden, such as during a deployment or while debugging.
Below is a complete config.yml
file, recommended practice is to only set the
config values you need, otherwise just use the defaults, the file can be empty
and Photish will still function:
port: 9876
qualities:
- name: Original
params: []
- name: Low
params: ['-resize', '200x200']
templates:
layout: layout.slim
collection: collection.slim
album: album.slim
photo: photo.slim
logging:
colorize: true
level: 'debug'
output: ['stdout', 'file']
url:
host: http://mydomain.com
base: 'subdirectory'
type: 'relative_uri'
workers: 4
threads: 2
force: false
plugins: ['ssh_deploy', 'other_plugin']
image_extensions: ['jpg', 'gif']
page_extension: 'slim'
dependencies:
minimagick:
cli: 'imagemagick'
cli_path: '/usr/bin/convert'
timeout: 3600
miniexiftool:
command: '/usr/bin/'
The meanings and purpose of each field is defined below:
Field | Purpose |
---|---|
port |
the port number that the photish host command will bind to, default is 9876
|
qualities |
an array of name and params fields for Images
|
qualities[]/name |
the name of the Image quality |
qualities[]/params |
the parameters to be provided to the ImageMagick or GraphicsMagick convert utility for the Image file quality |
templates |
a listing of the various template files |
templates/layout |
the layout template file in the site/_templates folder, must be overridden if using a different template engine |
templates/collection |
the collection template file in the site/_templates folder, must be overridden if using a different template engine |
templates/album |
the album template file in the site/_templates folder, must be overridden if using a different template engine |
templates/photo |
the photo template file in the site/_templates folder, must be overridden if using a different template engine |
logging |
a listing of the various logging options |
logging/colorize |
when outputting to STDOUT , true to use color, false for none |
logging/level |
the default logging level, it is advised to keep this at debug , supported are debug , info , warn , error and fatal
|
logging/output |
the appenders for the logger, stdout goes to STDOUT , file goes to log/photish.log
|
url |
a listing of the various url options |
url/host |
if you would like URLs generated with a specific host prefix, you can define it here, otherwise leave it as '/' or do not set this configuration at all |
url/base |
if your website will be hosted in a sub folder and will not be accessible at the root of the host, you can specify the sub folder(s) here, this will also mean your website will be hosted in a sub folder when ran using photish host
|
url/type |
if your website URLs require the host name in them, you can use absolute_uri (i.e. http://mysite.com/subdirectory/index.html), if you would prefer to generate URLs that end at the root, you can use absolute_relative (i.e. /subdirectory/index.html) |
workers |
the number of workers to create, for computers with multiple processors, photish is configured by default to spawn a worker for each process, a worker is responsible for image generation and html generation, load balancing is done randomly via a simple round robin allocation |
threads |
the number of threads each worker should create to handle image magick transcoding |
force |
this should always be false, if true, all content will be regenerated and nothing cached |
plugins |
an array of plugin names that have been included in your Gemfile and that Photish should require into it's runtime |
image_extensions |
by default, Photish has a complete list of image extensions, however if you choose too, you can explicitly list the extensions that Photish should use to find images |
page_extension |
the extension of Pages files that will live amongst the photo collection |
dependencies |
this section is for the configuration of third party tools |
dependencies/minimagick |
configuration for minimagick, the wrapping library around ImageMagick or GraphicsMagick |
dependencies/minimagick/cli |
provide imagemagick , or graphicsmagick depending on your chosen library |
dependencies/minimagick/cli_path |
if the above executables are not in your PATH, you can provide the location explicitly here |
dependencies/minimagick/timeout |
terminate a command after the provided number of seconds |
dependencies/miniexiftool |
configuration for mini_exiftool, the wrapping library around Exif Tool |
dependencies/miniexiftool/command |
if exiftool is not in your PATH, you can provide the location explicitly here |
Customizing Templates
Below is the documentation for the various data available inside each of the templates.
Note: {type}
is a place holder depending on your chosen template engine
the file extension will change. By default the template engine is
Slim, so templates will end with the slim extension.
Layout Template
site/_templates/layout.{type}
Example:
doctype html
html
head
title Master Layout
body
== yield
The layout template is the base layout for all the other templates. The
collection
, album
and photo
templates will be rendered inside this
layout. The layout template must include the yield
statement to bind the
sub template inside it. Below is an example Slim
template, the other templates will be bound where the yield
statement is:
Collection Template
site/_templates/collection.{type}
Example:
h1 Photo Collection
- albums.each do |album|
div.album
div.album-title
a href=album.url
| #{album.name}
The collection template becomes the index.html
for the root of the website.
This template is passed the Collection model when rendered.
Attribute or Method | Description |
---|---|
url | the URL of this page |
metadata | an object with methods for the attributes in the photos.yml file |
albums | an array of child Albums within this folder |
all_albums | an array of all child Albums |
all_photos | an array of all child Photos |
all_images | an array of all child Images |
all_pages | an array of all child Pages |
Album Template
site/_templates/album.{type}
Example:
h1 Album
h2
a href=url
| #{name}
div.album-photos
- photos.each do |photo|
div.album-photo
a href=photo.url title=photo.name
img src=photo.images.find{ |i|i.quality_name=='Low' }.url alt=photo.name
For each folder in the photos
directory, a slugified album folder is created
with an index.html
in it.
This template is passed the Album model when rendered.
Attribute or Method | Description |
---|---|
name | the name of the folder, i.e. photos/My album/ will become My album
|
url | the URL of this page |
metadata | an object with methods for the attributes in the {album_name}.yml file stored at the same level as the album |
albums | an array of child Albums within this folder |
all_albums | an array of all child Albums |
all_photos | an array of all child Photos |
all_images | an array of all child Images |
all_pages | an array of all child Pages |
Photo Template
site/_templates/photo.{type}
Example:
h1 Photo
h2
a href=url
| #{name}
div.album-photos
- images.each do |image|
div.album-photo
a href=image.url title=image.name
img src=image.url alt=image.quality_name
For each image in an Albums directory, a slugified photo folder is created
with an index.html
in it.
This template is passed the Photo model when rendered.
Attribute or Method | Description |
---|---|
name | the name of the photo, i.e. photos/My album/My dog.jpg will become My dog
|
url | the URL of this page |
metadata | an object with methods for the attributes in the {photo_name}.yml file stored at the same level as the photo |
exif | an object with methods for the exif data of the original photo file |
images | an array of all the Images for this photo, an Image will be a version of the photo in the quality configured in config.yml
|
Template Helpers
A template helper is a simple method that is available in the template that can be called to render complex information.
For example in a template, the method breadcrumbs
can be called:
div.content
div.site-breadcrumbs
== breadcrumbs
When rendered this will result in an unordered list of pages above the current page in the hierarchy:
<div class="content">
<div class="site-breadcrumbs">
<ul class="breadcrumbs">
<li class="breadcrumb crumb-0 crumb-first">
<a href="/index.html">Home</a>
</li>
<li class="breadcrumb crumb-1">
<a href="/big-dogs/index.html">Big Dogs</a>
</li>
<li class="breadcrumb crumb-2 crumb-last">
<a href="/big-dogs/tired-dogs/index.html">Tired Dogs</a>
</li>
</ul>
</div>
</div>
Custom template helpers are supported through Plugins.
By default, Photish comes with the following helpers:
Method | Description |
---|---|
breadcrumbs | an unordered list of pages above the current page in the hierarchy |
build_url(*pieces) | use this to ensure your URLs have the correct host name and base directory, to avoid having it hard coded in the template |
Custom Rendered Content
Gallery Page
A gallery page is a simple way to create a custom web page within the collection or album of your gallery that will render within your site's Layout Template.
For example, if you would like to create a "more details" page somewhere within
an album, or the collection root, and you would like it rendered in the Layout
Template to have a consistent look and feel, you can do it
by creating a Gallery Page such as more-about.slim
anywhere in your photos
directory. The file extension is determined using the page_extension
Config
File Option. A Gallery Page can live anywhere and you can
have as many of them as you like within the photos
directory.
photos/**/*.{page_extension}
div.more-about-album
h2 The More Details Page
p Lorem ipsum...
p Lorem ipsum...
p Lorem ipsum...
As with other gallery generated content, a gallery page is accessible from the
all_pages
method within the Collection or
Album template.
Asset Page
An Asset Page is a custom page that lives inside your site
directory that
is rendered using your template engine of choice. When an Asset Page template
is rendered it is not rendered inside the site's Layout
Template. Asset Page's are standalone templates. Like other
assets, they maintain the same folder structure in the output
directory that
they have in the site
directory. When rendered, the template is passed the
Collection model, as such they have access to all attributes that a Collection
Template does.
For example, if you would like to create an index page of all albums in your collection you can create the following file:
site/index/all_albums.html.{page_extension}
doctype html
html
head
title All Albums
body
ol
- all_albums.each do |album|
li #{album.name}
When rendered, the above Asset Page will be available at http://localhost:9876/index/all_albums.html.
It is important to note that once rendered, the template extension is removed
and the basename is used for the final filename. This allows you to specify
custom extensions before the page_extension
such as TXT or XML. In the
example above, HTML is specified.
An example usage of an Asset Page is in the include example site, it uses an Asset Page to create a sitemap.xml
Generate
The static HTML can be generated by running the below command inside the
my_new_photo_site
folder:
$ photish generate
All generated content will be written to the output
folder by default.
Execution Order
The Generate command does the following:
- Crawls the
photos
directory for photos and metadata - Creates a site structure of Collection, Album(s), Photo(s) and Image(s)
- Copies all files in the
site
folder not beginning with an_
(underscore) to theoutput
folder as these are viewed as "static" assets. That is, folders like_templates
are ignored - Renders the HTML index file(s) for the Collection, Album(s), Photo(s) and
Image(s) to the
output
folder - Converts all Photo(s) to the configured quality versions, writing various
images to the
output
folder
Image Conversion Tools
Photish supports ImageMagick or GraphicsMagick for image conversion.
By default, Photish will assume ImageMagick is
installed. To change this, ensure
GraphicsMagick is installed and the utility
is availabe on the PATH. Then ensure that the Config File
Option dependencies/minimagick/cli
is set to
graphicsmagick
. For example:
dependencies:
minimagick:
cli: graphicsmagick
If ImageMagick or
GraphicsMagick is not available on the PATH
you can manually specify it's location by setting
dependencies/minimagick/cli_path
. For example:
dependencies:
minimagick:
cli_path: '/usr/bin/convert'
Workers and Threads
In order to achieve maximum utilization of all processors on a computer during generation, Photish has the ability to create multiple workers and threads.
A worker is a spawned sub process created by the Generate command. The worker sub process is responsible for generating the HTML and Images for a subset of the collection.
Within each worker, threads are created when calling out to the Image Magick binary. During conversion, Image Magick often does not reach full processor utilization so rather then block the whole worker, it can be more performant to spawn multiple Image Magick processes at once.
For collections with a large number of images and HTML pages, multiple workers and threads can be used to rapidly speed up generation. However, if the collection has a small number of photos and pages, workers and threads will increase the generation time as loading a new ruby process and creating multiple threads may have a higher setup time then just generating everything in a single ruby process and thread.
The number of workers and threads is configurable in the config
file with the workers
and threads
options. By
default, Photish will spawn a thread for each processor detected on the
computer. It will then run this on a single worker.
When configuring more than 1 worker, it is important to remember that each worker will spawn their own set of threads, if 4 workers are created, each with 2 threads, it means in total Photish will manage 8 threads and potentially run 8 Image Magick processes concurrently. When tweaking the number of workers and threads it is important to consider IO bottlenecks as this will most likely be the limiting factor in performance.
Caching
Photish caches the generation of images to avoid regeneration when the Generate command is run or the generate event is triggered while hosting a local version of Photish with the Host command.
The cache file is stored in the output_dir
and is named .changes.yml
.
Automatic Regeneration
Images are regenerated when a photo is modified, renamed or moved.
Changing the qualities
option in the config file will also trigger a full
regeneration of all images.
Forced Regeneration
To do a full regeneration, run the Generate command with the --force
flag:
$ photish generate --force
The host command also supports the --force
flag, to do a full regeneration
on every change:
$ photish host --force
Crude Performance Measures
Below are some crude performance measures to get a ballpark idea of how Photish performs when generating for a large collection.
Benchmark Computer:
MacBook Pro (Retina, 13-inch, Early 2015)
2.7 GHz Intel Core i5 (4 processors)
8 GB 1867 MHz DDR3
Photos | Size (M) | Workers | Threads | Total Threads | Time (Seconds) |
---|---|---|---|---|---|
934 | 464 | 1 | 1 | 1 | 601 |
934 | 464 | 2 | 1 | 2 | 367 |
934 | 464 | 4 | 1 | 4 | 312 |
934 | 464 | 8 | 1 | 8 | 328 |
934 | 464 | 1 | 2 | 2 | 346 |
934 | 464 | 1 | 4 | 4 | 288 |
934 | 464 | 1 | 8 | 8 | 290 |
934 | 464 | 2 | 2 | 4 | 309 |
It is interesting to note the 20-30 second difference between using 4 workers vs. 4 threads. The time difference is due to the setup time of creating a whole new ruby process for each worker.
Host
To test and view your changes locally, the host command can be used to run a local WEBrick server to serve the HTML files:
$ photish host
The local version of your website will be visible at http://localhost:9876/.
The Host command will also automatically regenerate the website on startup and
when a file is added, removed or modified in the photo_dir
or site_dir
.
Note, when running in this mode any Image Conversion errors are swallowed and logged. This is done as it is quite common for image files to be moved while conversion is in progress. Rather then terminate the Host, the file move is recorded and regeneration will be triggered once the current generation completes.
Deploy
Photish provides a plugin type specifically for deployments, called the
Deployment Engine. Once a deploy plugin is
configured, it can be ran by passing the deploy plugins name as a value with
the engine
argument.
$ photish deploy --engine=name
To utilize a Deployment Engine Plugin someone in the community has written, take a look at Plugin Loading for how to include it in your site.
If you would like to write a Deployment Engine Plugin instructions are available in the plugin section.
Rake Task
If you would prefer to use Photish as a task in Rake. A helper class is available to create custom rake tasks that call Photish. The helper class is defined in Photish::Rake::Task.
In your Rakefile, simply add the following to wrap the generate command:
Photish::Rake::Task.new(:generate, 'Compiles the project to HTML') do |t|
t.options = "generate"
end
The above code will define a rake task called generate
which can be ran
by using rake generate
. It is the equivalent of photish generate
.
Plugins
Photish supports extension through the creation of plugins.
Template Helper Plugins
To create a template helper plugin you must:
- Create a Ruby Module in the
Photish::Plugin
module namespace, if you are packaging the plugin as a Gem, you can implement your module one level deeper in the namespace to allow for the Gem namespace, e.g.Photish::Plugin::MyGemPlugin::MyTemplateHelper
- Make the plugin available for loading
- Implement the
self.is_for?(type)
method - Implement your custom helper method(s)
A simple plugin is bellow, this plugin is for all Photo
Template's as the self.is_for?(type)
method only returns
true for Photish::Plugin::Type::Photo
types. When the shout
method is
called inside the template, it will render the message in bold wrapped in the
"I am shouting" text.
site/_plugins/shout.rb
module Photish::Plugin::Shout
def self.is_for?(type)
Photish::Plugin::Type::Photo == type
end
def shout(message)
"<strong>I am shouting '#{message}'!!!</strong>"
end
end
A Template Helper Plugin self.is_for?(type)
method could potentially receive
any of the below types, simply return true for the types the Template Helper
Plugin supports:
Photish::Plugin::Type::Collection
Photish::Plugin::Type::Album
Photish::Plugin::Type::Photo
Photish::Plugin::Type::Image
Photish::Plugin::Type::Page
To use the Template Helper Plugin, simply call the custom method(s) in your
template file. For the above example, it can be used by calling the shout
method in a template file:
site/_templates/photo.slim
div.my-shouting-content
== shout("HELLO")
Some "core" Template Helper plugins available in Photish by default are:
Deployment Engine Plugins
To create a deployment engine plugin you must:
- Create a Ruby Class in the
Photish::Plugin
module namespace, if you are packaging the plugin as a Gem, you can implement your module one level deeper in the namespace to allow for the Gem namespace, e.g.Photish::Plugin::MyGemPlugin::MyDeployEngine
- Make the plugin available for loading
- Implement a
self.is_for?(type)
method and respond true when it receives thePhotish::Plugin::Type::Deploy
type - Implement a
self.engine_name
method and respond with the name of the engine, this needs to match the value the user will pass on the Deploy command - Implement a constructor, it should expect two argumnets
initialize(config, log)
, a structure representing the config file and an instance of the logger - Finally the plugin should also implement a
deploy_site
method, this method will execute the actual deployment
A simple sample implementation is below:
site/_plugins/my_custom_deploy.rb
module Photish::Plugin::MyCustomDeploy
def initialize(config, log)
@config = config
@log = log
end
def self.is_for?(type)
Photish::Plugin::Type::Photo == type
end
def self.engine_name
'my_custom_deploy'
end
def deploy_site
@log.debug "Deploying using my plugin"
FileUtils.cp(@config.output_dir, '/srv/www')
end
end
Some reference implementations of deploy plugins are:
Plugin Loading
Photish supports the following methods of Plugin loading.
Site Folder Loading
By default, Photish will automatically load all files in the site/_plugins
directory. This is the most simple way and is recommended if you just want to
write a simple helper specific to your site.
The example site created when running photish generate --example
uses this
method to load plugins.
Explicit Gem Loading
This is recommended method if you want to utilize a plugin created by someone
else in the community - rather than simply copy pasting their code to your
site/_plugins
directory. It is done by including a Gem in your Photish site's
Gemfile
and listing the require path of the Gem in the plugins
Config File
Option.
An example of Explicit Gem Loading is provided by the Photish Montage demo that explicitly loads the Photish::Plugin::Sshdeploy Gem.
To load a Gem as a plugin, first of all add the Gem to your Gemfile:
Gemfile
gem 'photish-plugin-sshdeploy'
And in your Photish config, ensure it is listed in your plugins
Config File
Option.
config.yml
plugins: ['photish/plugin/sshdeploy']
Then run bundle install
.
To confirm that it is installed correctly, when you run the photish generate
command, you should see the plugin load:
log/photish.log or STDOUT
...
... Photish::Plugin::Repository: Found plugin Photish::Plugin::Sshdeploy::Deploy
...
Note the 'photish-plugin-sshdeploy' Gem has other install steps documented in it's README.
Development
Code Changes
If you would like to contribute to Photish by creating a new feature or fixing bugs, you are more then welcome!
To develop:
$ git clone git@github.com:henrylawson/photish.git
$ cd photish
$ ./bin/setup # installs dependencies mentioned in output
$ rake # runs the tests
$ vim # open up the project and begin contributing
$ ./bin/console # for an interactive prompt
To release:
$ rake dev:bump # update version, create commit when prompted
The Snap CI will then detect that this is a tagged commit on MASTER and it will generate a build and release it.
If you need ideas on how to help, checkout our TODO list.
Services
Photish uses a range of services. Before contributing it is worth browsing through these services to understand how Photish is configured and is using them:
- Snap CI is used as the primary CI/CD server. All builds and tests are ran from Snap CI. Snap CI is also used to release new versions of Photish to Github and Bintray.
- Github is used for source control. It is also used to record releases, issues, documentation and todos.
- Travis CI is used for the testing of JRuby and Rubinius builds.
- AppVeyor is used for testing and packaging of the Windows build.
- Code Climate is used to monitor high test coverage and quality code.
- Gemnasium is used to ensure all dependencies are up to date.
- Bintray DEB & RPM binary install packages for Linux distributions.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/henrylawson/photish. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.
License
The gem is available as open source under the terms of the MIT License.