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site_node_modifier.rb
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site_node_modifier.rb
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# Copyright (C) 2009 Pascal Rettig.
class SiteNodeModifier < DomainModel
acts_as_list :column => :position,
:scope => :site_node_id
belongs_to :site_node
serialize :modifier_data
has_many :page_revisions, :dependent => :destroy, :order => "revision DESC, language",
:as => :revision_container
has_many :ordered_revisions, :dependent => :destroy, :order => "revision DESC, page_revisions.id DESC",
:as => :revision_container, :class_name => 'PageRevision'
include SiteAuthorizationEngine::Target
access_control :access
def before_create #:nodoc:
if opts = self.modifier_options
opts.initial_options
self.modifier_data = opts.to_hash
end
end
def new_revision
rv = self.ordered_revisions.first.create_temporary
yield rv
rv.make_real
rv
end
# Returns the name of the modifier class
def modifier_options_class_name(full=true)
(full ? "SiteNodeModifier::" : "") + self.modifier_type.camelcase + "ModifierOptions"
end
def modifier_options
if SiteNodeModifier.const_defined?(modifier_options_class_name(false))
modifier_options_class_name.constantize.new(self.modifier_data)
else
nil
end
end
def options
@options ||= self.modifier_options
end
def self.find_page(page_id)
self.find_by_id(page_id)
end
def create_temporary_revision(revision_id)
rev = self.page_revisions.find_by_id(revision_id)
return nil unless rev
rev.create_temporary
end
def after_create
if self.modifier_type == 'F' || self.modifier_type == 'framework'
self.page_revisions.create( :language => Configuration.languages[0], :revision => '0.01' , :active => true)
end
end
def page_type
'framework'
end
def node_path
self.site_node.node_path
end
def language_revisions(languages)
languages.collect do |lang|
[ lang,
self.page_revisions.find(:first,:conditions => ['language=? AND revision_type="real"',lang], :order => 'active DESC, revision DESC'),
self.page_revisions.find(:first,:conditions => ['language=? AND revision_type="real"',lang], :order => 'revision DESC')
]
end
end
@@legacy_modifier_hash = {
'L' => 'lock',
'P' => 'page',
'F' => 'framework',
'E' => 'edit',
'T' => 'template',
'S' => 'ssl',
'D' => 'domain'
}
def modifier_type
type = self.read_attribute(:modifier_type)
if type.length == 1
@@legacy_modifier_hash[type]
else
type
end
end
def before_save
self.modifier_data = @options.to_hash if @options
end
private
def modifier_parts
return @modifier_parts if @modifier_parts
@modifier_parts = self.modifier_type.split('/')
if @modifier_parts.length==1
@modifier_parts = [ nil, @modifier_parts[0] ]
end
@modifier_parts
end
public
def modifier_module
return modifier_parts[0]
end
def modifier_module_instance
@modifier_module_instance ||= self.modifier_module.classify.new(self)
end
def apply_modifier!(engine,page_information)
if(self.modifier_module)
modifier_module_instance.send('apply_modifier_#{self.modifier_parts[1]}!',engine,page_information)
else
self.send("apply_modifier_#{self.modifier_type}!",engine,page_information)
end
end
# Return either:
# :locked => Not Permitted
# :unlocked => Permitted, given other locks permit
# :full => Permitted regardless of other locks
def access(user)
self.modifier_data ||= {}
if(self.modifier_type == 'L' || self.modifier_type == 'lock')
rl = user.has_role?('access',self)
if self.modifier_data[:access_control] == 'unlock'
if !rl
return self.modifier_data[:options].include?('override') ? :full : :unlocked
else
return :locked
end
elsif self.modifier_data[:access_control] == 'lock'
if rl
return self.modifier_data[:options].include?('override') ? :full : :unlocked
else
return :locked
end
else
return :locked
end
else
raise 'Not a Lock Modifier'
end
end
class TemplateModifierOptions < HashModel
validates_presence_of :template_id
validates_presence_of :clear_frameworks
attributes :template_id => nil, :clear_frameworks => 'no'
def initial_options
tpl = SiteTemplate.find(:first)
self.template_id = tpl.id if tpl
end
end
class LockModifierOptions < HashModel
validates_presence_of :access_control, :options, :redirect
integer_options :redirect
default_options :access_control => 'lock', :options => nil, :redirect => nil
def initial_options
end
end
class DomainModifierOptions < HashModel
validates_presence_of :limit_to_domain
default_options :limit_to_domain => ''
def initial_options
end
end
def active_language_revision(language)
# Get the first real, active revisions from this framework that's available
self.page_revisions.find(:first,
:conditions => "revision_type = 'real' AND active=1",
:order => "language=#{PageRevision.quote_value(language)} DESC"
)
end
protected
def apply_modifier_template!(engine,page_information)
if self.modifier_data.is_a?(Hash)
tpl = SiteTemplate.find_by_id(self.modifier_data[:template_id] || 0)
if tpl
unless page_information.site_template_id
page_information[:site_template_id] = tpl.id
# Save the template so we don't have to go for it again
engine.active_template = tpl
end
# See if this template change clears all the framework elements or not
if self.modifier_data[:clear_frameworks] == 'yes'
tpl.site_template_zones.each do |zn|
page_information.zone_clears[zn.position] = true
end
end
end
end
end
def apply_modifier_lock!(engine,page_information)
# For Locks, just add the lock to the beginning of the list
page_information.locks.unshift(self.attributes)
end
def apply_modifier_ssl!(engine,page_information)
# For SSL, just set the page_information to SSL
page_information[:ssl] = true
end
def apply_modifier_domain!(engine,page_information)
page_information[:domain] = self.modifier_data[:limit_to_domain] unless page_information[:domain]
end
def apply_modifier_framework!(engine,page_information)
rev = active_language_revision(engine.language)
# If there's a valid revision
if rev
# Use this as the revision, unless we have a one already
engine.revision = rev unless engine.revision
(rev.variables||{}).each do |var,value|
engine.revision.display_variables[var] = value if engine.revision.display_variables[var].blank?
end
# Go through the paragraphs in reverse order (as each is added to the beginning of the list)
rev.page_paragraphs.reverse_each do |para|
# Mark this para as a framework paragraph
para.framework=true
page_information.zone_paragraphs[para.zone_idx] ||= []
# for element, locks, indivate that this zone is locked for further additions
# Unless we have already cleared everything
if(para.display_type == 'lock' && !page_information.zone_clears[para.zone_idx])
page_information.zone_locks[para.zone_idx] = true
# For element clears, if we don't already have a clear, set the zone as cleared
elsif (para.display_type == 'clear')
if !page_information.zone_clears[para.zone_idx]
page_information.zone_clears[para.zone_idx] = rev.id
page_information.zone_locks[para.zone_idx] = false
else
page_information.zone_clears[para.zone_idx] = true
end
end
# If this zone has been cleared already
if page_information.zone_clears[para.zone_idx] && page_information.zone_clears[para.zone_idx] != rev.id
# then don't add the paragraph
if engine.mode == 'edit' && page_information.zone_clears[para.zone_idx] != true
# Unless we are editing, then mark it as hidden, as long as there hasnt been a second reason to clear
para.hidden = true
page_information.zone_paragraphs[para.zone_idx].unshift(para)
end
else
page_information.zone_paragraphs[para.zone_idx].unshift(para)
end
end
end
end
end