Class: Redmine::Plugin

Inherits:
Object
  • Object
show all
Defined in:
lib/redmine/plugin.rb

Overview

Base class for Redmine plugins. Plugins are registered using the register class method that acts as the public constructor.

Redmine::Plugin.register :example do
  name 'Example plugin'
  author 'John Smith'
  description 'This is an example plugin for Redmine'
  version '0.0.1'
  settings :default => {'foo'=>'bar'}, :partial => 'settings/settings'
end

Plugin attributes

settings is an optional attribute that let the plugin be configurable. It must be a hash with the following keys:

  • :default: default value for the plugin settings

  • :partial: path of the configuration partial view, relative to the plugin app/views directory

Example:

settings :default => {'foo'=>'bar'}, :partial => 'settings/settings'

In this example, the settings partial will be found here in the plugin directory: app/views/settings/_settings.rhtml.

When rendered, the plugin settings value is available as the local variable settings

See: www.redmine.org/projects/redmine/wiki/Plugin_Tutorial

Defined Under Namespace

Classes: MigrationContext, Migrator

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id) ⇒ Plugin

Returns a new instance of Plugin.


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# File 'lib/redmine/plugin.rb', line 187

def initialize(id)
  @id = id.to_sym
end

Class Attribute Details

.registered_pluginsObject (readonly)

Returns the value of attribute registered_plugins


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# File 'lib/redmine/plugin.rb', line 65

def registered_plugins
  @registered_plugins
end

Instance Attribute Details

#idObject (readonly)

Returns the value of attribute id


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# File 'lib/redmine/plugin.rb', line 79

def id
  @id
end

Class Method Details

.allObject

Returns an array of all registered plugins


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# File 'lib/redmine/plugin.rb', line 142

def self.all
  registered_plugins.values.sort
end

.clearObject

Clears the registered plugins hash It doesn't unload installed plugins


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# File 'lib/redmine/plugin.rb', line 154

def self.clear
  @registered_plugins = {}
end

.def_field(*names) ⇒ Object


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# File 'lib/redmine/plugin.rb', line 68

def def_field(*names)
  class_eval do
    names.each do |name|
      define_method(name) do |*args|
        args.empty? ? instance_variable_get("@#{name}") : instance_variable_set("@#{name}", *args)
      end
    end
  end
end

.find(id) ⇒ Object

Finds a plugin by its id Returns a PluginNotFound exception if the plugin doesn't exist


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# File 'lib/redmine/plugin.rb', line 148

def self.find(id)
  registered_plugins[id.to_sym] || raise(PluginNotFound)
end

.installed?(id) ⇒ Boolean

Checks if a plugin is installed

Parameters:

  • id (String)

    name of the plugin

Returns:

  • (Boolean)

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# File 'lib/redmine/plugin.rb', line 167

def self.installed?(id)
  registered_plugins[id.to_sym].present?
end

.loadObject


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# File 'lib/redmine/plugin.rb', line 171

def self.load
  Dir.glob(File.join(self.directory, '*')).sort.each do |directory|
    if File.directory?(directory)
      lib = File.join(directory, "lib")
      if File.directory?(lib)
        $:.unshift lib
        ActiveSupport::Dependencies.autoload_paths += [lib]
      end
      initializer = File.join(directory, "init.rb")
      if File.file?(initializer)
        require initializer
      end
    end
  end
end

.migrate(name = nil, version = nil) ⇒ Object

Migrates all plugins or a single plugin to a given version Exemples:

Plugin.migrate
Plugin.migrate('sample_plugin')
Plugin.migrate('sample_plugin', 1)

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# File 'lib/redmine/plugin.rb', line 492

def self.migrate(name=nil, version=nil)
  if name.present?
    find(name).migrate(version)
  else
    all.each do |plugin|
      plugin.migrate
    end
  end
end

.mirror_assets(name = nil) ⇒ Object

Mirrors assets from one or all plugins to public/plugin_assets


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# File 'lib/redmine/plugin.rb', line 454

def self.mirror_assets(name=nil)
  if name.present?
    find(name).mirror_assets
  else
    all.each do |plugin|
      plugin.mirror_assets
    end
  end
end

.register(id, &block) ⇒ Object

Plugin constructor: instanciates a new Redmine::Plugin with given id and make it evaluate the given block

Example

Redmine::Plugin.register :example do
  name 'Example plugin'
  author 'John Smith'
  description 'This is an example plugin for Redmine'
  version '0.0.1'
  requires_redmine version_or_higher: '3.0.0'
end

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# File 'lib/redmine/plugin.rb', line 92

def self.register(id, &block)
  p = new(id)
  p.instance_eval(&block)

  # Set a default name if it was not provided during registration
  p.name(id.to_s.humanize) if p.name.nil?
  # Set a default directory if it was not provided during registration
  p.directory(File.join(self.directory, id.to_s)) if p.directory.nil?

  unless File.directory?(p.directory)
    raise PluginNotFound, "Plugin not found. The directory for plugin #{p.id} should be #{p.directory}."
  end

  # Adds plugin locales if any
  # YAML translation files should be found under <plugin>/config/locales/
  Rails.application.config.i18n.load_path += Dir.glob(File.join(p.directory, 'config', 'locales', '*.yml'))

  # Prepends the app/views directory of the plugin to the view path
  view_path = File.join(p.directory, 'app', 'views')
  if File.directory?(view_path)
    ActionController::Base.prepend_view_path(view_path)
    ActionMailer::Base.prepend_view_path(view_path)
  end

  # Add the plugin directories to rails autoload paths
  engine_cfg = Rails::Engine::Configuration.new(p.directory)
  engine_cfg.paths.add 'lib', eager_load: true
  Rails.application.config.eager_load_paths += engine_cfg.eager_load_paths
  Rails.application.config.autoload_once_paths += engine_cfg.autoload_once_paths
  Rails.application.config.autoload_paths += engine_cfg.autoload_paths
  ActiveSupport::Dependencies.autoload_paths += engine_cfg.eager_load_paths + engine_cfg.autoload_once_paths + engine_cfg.autoload_paths

  # Defines plugin setting if present
  if p.settings
    Setting.define_plugin_setting p
  end

  # Warn for potential settings[:partial] collisions
  if p.configurable?
    partial = p.settings[:partial]
    if @used_partials[partial]
      Rails.logger.warn "WARNING: settings partial '#{partial}' is declared in '#{p.id}' plugin but it is already used by plugin '#{@used_partials[partial]}'. Only one settings view will be used. You may want to contact those plugins authors to fix this."
    end
    @used_partials[partial] = p.id
  end

  registered_plugins[id] = p
end

.unregister(id) ⇒ Object

Removes a plugin from the registered plugins It doesn't unload the plugin


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# File 'lib/redmine/plugin.rb', line 160

def self.unregister(id)
  @registered_plugins.delete(id)
end

Instance Method Details

#<=>(plugin) ⇒ Object


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# File 'lib/redmine/plugin.rb', line 204

def <=>(plugin)
  self.id.to_s <=> plugin.id.to_s
end

#activity_provider(*args) ⇒ Object

Registers an activity provider.

Options:

  • :class_name - one or more model(s) that provide these events (inferred from event_type by default)

  • :default - setting this option to false will make the events not displayed by default

A model can provide several activity event types.

Examples:

register :news
register :scrums, :class_name => 'Meeting'
register :issues, :class_name => ['Issue', 'Journal']

Retrieving events: Associated model(s) must implement the find_events class method. ActiveRecord models can use acts_as_activity_provider as a way to implement this class method.

The following call should return all the scrum events visible by current user that occurred in the 5 last days:

Meeting.find_events('scrums', User.current, 5.days.ago, Date.today)
Meeting.find_events('scrums', User.current, 5.days.ago, Date.today, :project => foo) # events for project foo only

Note that :view_scrums permission is required to view these events in the activity view.


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# File 'lib/redmine/plugin.rb', line 386

def activity_provider(*args)
  Redmine::Activity.register(*args)
end

#assets_directoryObject

Returns the absolute path to the plugin assets directory


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# File 'lib/redmine/plugin.rb', line 200

def assets_directory
  File.join(directory, 'assets')
end

#configurable?Boolean

Returns true if the plugin can be configured.

Returns:

  • (Boolean)

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# File 'lib/redmine/plugin.rb', line 408

def configurable?
  settings && settings.is_a?(Hash) && !settings[:partial].blank?
end

#delete_menu_item(menu, item) ⇒ Object

Removes item from the given menu.


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# File 'lib/redmine/plugin.rb', line 315

def delete_menu_item(menu, item)
  Redmine::MenuManager.map(menu).delete(item)
end

#latest_migrationObject

Returns the version number of the latest migration for this plugin. Returns nil if this plugin has no migrations.


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# File 'lib/redmine/plugin.rb', line 471

def latest_migration
  migrations.last
end

Adds an item to the given menu. The id parameter (equals to the project id) is automatically added to the url.

menu :project_menu, :plugin_example, { :controller => 'example', :action => 'say_hello' }, :caption => 'Sample'

name parameter can be: :top_menu, :account_menu, :application_menu or :project_menu


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# File 'lib/redmine/plugin.rb', line 309

def menu(menu, item, url, options={})
  Redmine::MenuManager.map(menu).push(item, url, options)
end

#migrate(version = nil) ⇒ Object

Migrate this plugin to the given version


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# File 'lib/redmine/plugin.rb', line 482

def migrate(version = nil)
  Redmine::Plugin::Migrator.migrate_plugin(self, version)
end

#migration_directoryObject

The directory containing this plugin's migrations (plugin/db/migrate)


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# File 'lib/redmine/plugin.rb', line 465

def migration_directory
  File.join(directory, 'db', 'migrate')
end

#migrationsObject

Returns the version numbers of all migrations for this plugin.


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# File 'lib/redmine/plugin.rb', line 476

def migrations
  migrations = Dir[migration_directory+"/*.rb"]
  migrations.map { |p| File.basename(p).match(/0*(\d+)\_/)[1].to_i }.sort
end

#mirror_assetsObject


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# File 'lib/redmine/plugin.rb', line 412

def mirror_assets
  source = assets_directory
  destination = public_directory
  return unless File.directory?(source)

  source_files = Dir[source + "/**/*"]
  source_dirs = source_files.select { |d| File.directory?(d) }
  source_files -= source_dirs

  unless source_files.empty?
    base_target_dir = File.join(destination, File.dirname(source_files.first).gsub(source, ''))
    begin
      FileUtils.mkdir_p(base_target_dir)
    rescue => e
      raise "Could not create directory #{base_target_dir}: " + e.message
    end
  end

  source_dirs.each do |dir|
    # strip down these paths so we have simple, relative paths we can
    # add to the destination
    target_dir = File.join(destination, dir.gsub(source, ''))
    begin
      FileUtils.mkdir_p(target_dir)
    rescue => e
      raise "Could not create directory #{target_dir}: " + e.message
    end
  end

  source_files.each do |file|
    begin
      target = File.join(destination, file.gsub(source, ''))
      unless File.exist?(target) && FileUtils.identical?(file, target)
        FileUtils.cp(file, target)
      end
    rescue => e
      raise "Could not copy #{file} to #{target}: " + e.message
    end
  end
end

#permission(name, actions, options = {}) ⇒ Object

Defines a permission called name for the given actions.

The actions argument is a hash with controllers as keys and actions as values (a single value or an array):

permission :destroy_contacts, { :contacts => :destroy }
permission :view_contacts, { :contacts => [:index, :show] }

The options argument is a hash that accept the following keys:

  • :public => the permission is public if set to true (implicitly given to any user)

  • :require => can be set to one of the following values to restrict users the permission can be given to: :loggedin, :member

  • :read => set it to true so that the permission is still granted on closed projects

Examples

# A permission that is implicitly given to any user
# This permission won't appear on the Roles & Permissions setup screen
permission :say_hello, { :example => :say_hello }, :public => true, :read => true

# A permission that can be given to any user
permission :say_hello, { :example => :say_hello }

# A permission that can be given to registered users only
permission :say_hello, { :example => :say_hello }, :require => :loggedin

# A permission that can be given to project members only
permission :say_hello, { :example => :say_hello }, :require => :member

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# File 'lib/redmine/plugin.rb', line 343

def permission(name, actions, options = {})
  if @project_module
    Redmine::AccessControl.map {|map| map.project_module(@project_module) {|map| map.permission(name, actions, options)}}
  else
    Redmine::AccessControl.map {|map| map.permission(name, actions, options)}
  end
end

#project_module(name, &block) ⇒ Object

Defines a project module, that can be enabled/disabled for each project. Permissions defined inside block will be bind to the module.

project_module :things do
  permission :view_contacts, { :contacts => [:list, :show] }, :public => true
  permission :destroy_contacts, { :contacts => :destroy }
end

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# File 'lib/redmine/plugin.rb', line 358

def project_module(name, &block)
  @project_module = name
  self.instance_eval(&block)
  @project_module = nil
end

#public_directoryObject


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# File 'lib/redmine/plugin.rb', line 191

def public_directory
  File.join(self.class.public_directory, id.to_s)
end

#requires_redmine(arg) ⇒ Object

Sets a requirement on Redmine version Raises a PluginRequirementError exception if the requirement is not met

Examples

# Requires Redmine 0.7.3 or higher
requires_redmine :version_or_higher => '0.7.3'
requires_redmine '0.7.3'

# Requires Redmine 0.7.x or higher
requires_redmine '0.7'

# Requires a specific Redmine version
requires_redmine :version => '0.7.3'              # 0.7.3 only
requires_redmine :version => '0.7'                # 0.7.x
requires_redmine :version => ['0.7.3', '0.8.0']   # 0.7.3 or 0.8.0

# Requires a Redmine version within a range
requires_redmine :version => '0.7.3'..'0.9.1'     # >= 0.7.3 and <= 0.9.1
requires_redmine :version => '0.7'..'0.9'         # >= 0.7.x and <= 0.9.x

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# File 'lib/redmine/plugin.rb', line 227

def requires_redmine(arg)
  arg = { :version_or_higher => arg } unless arg.is_a?(Hash)
  arg.assert_valid_keys(:version, :version_or_higher)

  current = Redmine::VERSION.to_a
  arg.each do |k, req|
    case k
    when :version_or_higher
      raise ArgumentError.new(":version_or_higher accepts a version string only") unless req.is_a?(String)
      unless compare_versions(req, current) <= 0
        raise PluginRequirementError.new("#{id} plugin requires Redmine #{req} or higher but current is #{current.join('.')}")
      end
    when :version
      req = [req] if req.is_a?(String)
      if req.is_a?(Array)
        unless req.detect {|ver| compare_versions(ver, current) == 0}
          raise PluginRequirementError.new("#{id} plugin requires one the following Redmine versions: #{req.join(', ')} but current is #{current.join('.')}")
        end
      elsif req.is_a?(Range)
        unless compare_versions(req.first, current) <= 0 && compare_versions(req.last, current) >= 0
          raise PluginRequirementError.new("#{id} plugin requires a Redmine version between #{req.first} and #{req.last} but current is #{current.join('.')}")
        end
      else
        raise ArgumentError.new(":version option accepts a version string, an array or a range of versions")
      end
    end
  end
  true
end

#requires_redmine_plugin(plugin_name, arg) ⇒ Object

Sets a requirement on a Redmine plugin version Raises a PluginRequirementError exception if the requirement is not met

Examples

# Requires a plugin named :foo version 0.7.3 or higher
requires_redmine_plugin :foo, :version_or_higher => '0.7.3'
requires_redmine_plugin :foo, '0.7.3'

# Requires a specific version of a Redmine plugin
requires_redmine_plugin :foo, :version => '0.7.3'              # 0.7.3 only
requires_redmine_plugin :foo, :version => ['0.7.3', '0.8.0']   # 0.7.3 or 0.8.0

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# File 'lib/redmine/plugin.rb', line 274

def requires_redmine_plugin(plugin_name, arg)
  arg = { :version_or_higher => arg } unless arg.is_a?(Hash)
  arg.assert_valid_keys(:version, :version_or_higher)

  begin
    plugin = Plugin.find(plugin_name)
  rescue PluginNotFound
    raise PluginRequirementError.new("#{id} plugin requires the #{plugin_name} plugin")
  end
  current = plugin.version.split('.').collect(&:to_i)

  arg.each do |k, v|
    v = [] << v unless v.is_a?(Array)
    versions = v.collect {|s| s.split('.').collect(&:to_i)}
    case k
    when :version_or_higher
      raise ArgumentError.new("wrong number of versions (#{versions.size} for 1)") unless versions.size == 1
      unless (current <=> versions.first) >= 0
        raise PluginRequirementError.new("#{id} plugin requires the #{plugin_name} plugin #{v} or higher but current is #{current.join('.')}")
      end
    when :version
      unless versions.include?(current.slice(0,3))
        raise PluginRequirementError.new("#{id} plugin requires one the following versions of #{plugin_name}: #{v.join(', ')} but current is #{current.join('.')}")
      end
    end
  end
  true
end

#to_paramObject


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# File 'lib/redmine/plugin.rb', line 195

def to_param
  id
end

#wiki_format_provider(name, *args) ⇒ Object

Registers a wiki formatter.

Parameters:

  • name - formatter name

  • formatter - formatter class, which should have an instance method to_html

  • helper - helper module, which will be included by wiki pages (optional)

  • html_parser class reponsible for converting HTML to wiki text (optional)

  • options - a Hash of options (optional)

    • :label - label for the formatter displayed in application settings

Examples:

wiki_format_provider(:custom_formatter, CustomFormatter, :label => "My custom formatter")

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# File 'lib/redmine/plugin.rb', line 403

def wiki_format_provider(name, *args)
  Redmine::WikiFormatting.register(name, *args)
end