Class: Kiss::Action

Inherits:
Object show all
Includes:
ControllerAccessors, DatabaseAccessors, RequestAccessors, TemplateMethods
Defined in:
lib/kiss/action.rb

Constant Summary collapse

@@template_class = 
nil

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from TemplateMethods

#data, #data=, #set

Methods included from DatabaseAccessors

#database

Methods included from RequestAccessors

#app, #cookies, #debug, #env, #file_cache, #host, #login, #models, #path_info, #protocol, #pub, #query_string_with_params, #redirect_url, #request_url_with_params, #response, #send_file, #send_response, #session, #set_cookie, #set_exception_cache, #start_benchmark, #stop_benchmark

Methods included from ControllerAccessors

#database, #environment, #models, #public_dir, #upload_dir

Methods included from KissAccessors

#html_escape, #url_escape

Constructor Details

#initialize(request, action_path, extension, collection, object, object_part, object_display_name, breadcrumbs, args, params = {}) ⇒ Action

Creates a new action instance from controller data.



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# File 'lib/kiss/action.rb', line 273

def initialize(request, action_path, extension, collection, object, object_part, object_display_name, breadcrumbs, args, params = {})
  @_request = request
  @_controller = request.controller
  @_action_path = action_path
  @_extension = extension
  @_object = object
  @_object_part = object_part
  @_args = args
  @_params = params
  
  @_template = self.class.name
  
  @_arg_index = -1
  @_forms = {}
  
  @data = {}
  
  @breadcrumbs = breadcrumbs
  @title =
    is_index? ? (@breadcrumbs.pop.first unless @breadcrumbs.empty?) :
    is_view? ? (@breadcrumbs.pop; object_display_name) :
    is_edit? ? "#{@_object ? 'Edit' : 'Add'} #{collection.first.singularize}" : 
    is_delete? ? "Delete #{collection.first.singularize}" : self.class.part.titlecase
  
  @base_url = app + action_path
  
  after_initialize
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object

Raises custom error message for missing methods, specifying current action more clearly than standard error message.



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# File 'lib/kiss/action.rb', line 264

def method_missing(method, *args, &block)
  if method.to_s =~ /\A_class_(\d+)_(.*)/
    __send__ $2.to_sym, $1.to_i, *args, &block
  else
    raise NoMethodError, "undefined method `#{method}'"
  end
end

Class Attribute Details

.authentication_required ⇒ Object (readonly)

Returns the value of attribute authentication_required.



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# File 'lib/kiss/action.rb', line 9

def authentication_required
  @authentication_required
end

.base_url ⇒ Object (readonly)

Returns the value of attribute base_url.



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# File 'lib/kiss/action.rb', line 9

def base_url
  @base_url
end

.breadcrumbs ⇒ Object (readonly)

Returns the value of attribute breadcrumbs.



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# File 'lib/kiss/action.rb', line 9

def breadcrumbs
  @breadcrumbs
end

.layout ⇒ Object (readonly)

Returns the value of attribute layout.



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# File 'lib/kiss/action.rb', line 9

def layout
  @layout
end

Instance Attribute Details

#layout ⇒ Object

Returns the value of attribute layout.



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# File 'lib/kiss/action.rb', line 249

def layout
  @layout
end

#title ⇒ Object

Returns the value of attribute title.



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# File 'lib/kiss/action.rb', line 249

def title
  @title
end

Class Method Details

.absolute_uri(path, action_path) ⇒ Object 



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# File 'lib/kiss/action.rb', line 236

def absolute_uri(path, action_path)
  # need to add something to action_path before File.dirname, in case
  # action_path ends in /
  path =~ /\A\// ? path : action_path.gsub(/[^\/]*\Z/, '') + path
end

.alias_action(part, action, options = {}) ⇒ Object 



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# File 'lib/kiss/action.rb', line 232

def alias_action(part, action, options = {})
  @_aliases[part.to_s] = [action.to_s, options]
end

.get_child_class(part = nil, is_directory = !part)) ⇒ Object 



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# File 'lib/kiss/action.rb', line 170

def get_child_class(part = nil, is_directory = !part)
  # each subdir must get a subclass of the parent dir class;
  # each subclass has its own @_child_classes hash of its subdirs
  
  subdir = self.name.to_s.sub(/\/\Z/, '')
  name = self.name.to_s + part.to_s + (is_directory ? '/' : '')
  path = name + (is_directory ? '_action' : '') + '.rb'
  parent = self
  
  layout = @layout
  
  auth_path = name
  auth_req = @authentication_required && !@@controller.authenticate_exclude.include?(auth_path)
  
  src, updated = @@controller.file_cache(@@action_dir + path, true)
  
  if updated || !@_child_classes.has_key?(part)
    klass = Class.new(self)
    Kiss.register_class_path(klass, @@action_dir + path)
    klass.class_eval do
      @_subdir = subdir
      @_part = part
      @_name = name
      @_action_path = path
      @_parent_class = parent
      @_breadcrumb = part ? part.titleize : nil
      
      @layout = layout
      @breadcrumbs = []
      @authentication_required = auth_req
      
      @_aliases = {}
      
      selects_object if part && is_directory 
    end
    
    if src
      klass.class_eval(src, @@action_dir + path)
    end
    @_child_classes[part] = klass
  end
  
  @_child_classes[part]
end

.get_root_class(controller, root_dir) ⇒ Object 



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# File 'lib/kiss/action.rb', line 149

def get_root_class(controller, root_dir)
  parent = self
  klass = Class.new(self)
  Kiss.register_class_path(klass, root_dir)
  klass.class_eval do
    @@action_dir = root_dir
    @@controller = controller
    @@root_class = klass
    
    @_parent_class = parent
    @_subdir = ''
    
    @layout = nil
    @breadcrumbs = []
    @authentication_required = @@controller.authenticate_all ? true : false
    
    @_aliases = {}
  end
  klass
end

.get_subclass_from_path(path, request, params) ⇒ Object 



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# File 'lib/kiss/action.rb', line 20

def get_subclass_from_path(path, request, params)
  action_subdir = ''
  action_path = '/'
  action_found = false
  args = []
  objects = {}
  breadcrumbs = []
  object = nil
  object_part = nil
  collection = nil
  
  request.redirect_action('/') if path == ''
  
  action_class = self.get_child_class
  
  parts = path.sub(/\A\/*/, '').split(/\/+/)
  parts.push('') if path[-1, 1] == '/'
  
  while part = parts.shift
    action_path += part
    part = (object_part ? 'view' : @@controller.default_action) if part.empty?
    
    # =column syntax not yet supported
    # when adding this support, be sure to change Action#redirect_action also
    
    if part =~ /\A([\w\-\.\+\%]+)\=([\w\-\.\+\%]+)\Z/
      params[$1.url_unescape] = $2.url_unescape
      action_path += '/'
      next
    end
    
    if part !~ /\A[\w\-\.]*\Z/i
      raise Kiss::FileNotFoundError::InvalidAction, 'invalid action path'
    end
              
    if redirect = action_class.aliases[part]
      action, options = redirect
      request.redirect_action(
        absolute_uri( action + '/' + parts.join('/'), action_path ),
        options
      )
    end
    
    test_path = @@controller.action_dir + action_subdir + '/' + part
    if @@controller.directory_exists?(test_path)
      action_subdir += '/' + part
      action_class = action_class.get_child_class(part, true)
      object = object_part = nil
      
      collection = action_class.breadcrumb
      
      action_path += '/'
      if action_class.breadcrumbs.empty?
        if File.file?("#{@@controller.action_dir}#{action_class.name}index.rb") ||
            File.file?("#{@@controller.action_dir}#{action_class.name}index.rhtml")
          breadcrumbs << [action_class.breadcrumb, action_path]
        end
      else
        breadcrumbs.push(*action_class.breadcrumbs)
      end
    else
      # remove .rb extension, if any
      part.sub!(/(\.rb)+\Z/, '')
      
      # does part have an extension?
      if part =~ /\A(.+)\.(\w+)\Z/
        extension = $2
        part = $1
      else
        extension = 'rhtml'
      end
      
      test_path = @@controller.action_dir + action_subdir + '/' + part
      if File.file?("#{test_path}.rb") || File.file?("#{test_path}.#{(extension == 'xls') ? 'txt' : extension}")            
        action_found = true
        action_class = action_class.get_child_class(part)
        break
      else
        unless part =~ /\A[\w\.\-]+\Z/
          raise Kiss::FileNotFoundError, "invalid URI"
        end
        
        object_options = action_class.object_options
        if object_options && (object_options[:column] != :id || part =~ /\A\d+\Z/)
          object_part = part
          object = request.dbm[object_options[:class_name]].find(object_options[:column] => object_part)
          objects[object_options[:variable_name]] = object
          
          action_path += '/'
          
          if !object
            raise Kiss::FileNotFoundError, "resource '#{test_path.html_escape}' not found"
          end
          
          object_breadcrumb = action_class.object_breadcrumb
          object_display_name = object[object.class.display_column] ||
            (object.send(object.class.display_column) rescue nil)
          if (object_breadcrumb != false)
            breadcrumbs << [
              (object_breadcrumb.is_a?(Proc) ? object_breadcrumb.call(object) : object_breadcrumb) ||
                object_display_name,
              action_path
            ]
          end
        
          next
        else
          if part == 'view'
            request.redirect_action(path + '..')
          end
          raise Kiss::FileNotFoundError, "resource '#{test_path.html_escape}' not found"
        end
      end
    end
  end
  
  # if no action found, add a trailing slash and try again
  request.redirect_action(path + '/') unless action_found
  
  # keep rest of path_info in args
  args.push(*parts)
  
  action = action_class.new(request, action_path, extension, collection, object, object_part, object_display_name, breadcrumbs, args, params)
  objects.each_pair do |key, value|
    action.instance_variable_set(key, value)
  end
  action
end

.inherited(subclass) ⇒ Object 



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# File 'lib/kiss/action.rb', line 13

def inherited(subclass)
  subclass.init_child_classes
end

.init_child_classes ⇒ Object 



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# File 'lib/kiss/action.rb', line 16

def init_child_classes
  @_child_classes = {}
end

.selects_object(options = {}) ⇒ Object Also known as: select_object, accepts_object, accept_object 



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# File 'lib/kiss/action.rb', line 215

def selects_object(options = {})
  if options.has_key?(:variable_name)
    variable_name = options[:variable_name]
    raise 'variable name must be a symbol' unless variable_name.is_a?(Symbol)
    raise 'variable name must start with @' unless variable_name.to_s[0, 1] == '@'
  end
  
  (@_object_options ||= {
    :class_name => @_part.pluralize.to_sym,
    :variable_name => ('@'+@_part.singularize).to_sym,
    :column => :id
  }).merge!(options)
end

Instance Method Details

#absolute_uri(relative_uri) ⇒ Object 



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# File 'lib/kiss/action.rb', line 482

def absolute_uri(relative_uri)
  self.class.absolute_uri(relative_uri, action_path)
end

#add_form(attrs = {}, &block) ⇒ Object

Creates and adds form to current action, using specified attributes.



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# File 'lib/kiss/action.rb', line 605

def add_form(attrs = {}, &block)
  # create form
  temp_form = Kiss::Form.new({
    :name => attrs[:action] || action_path,
    :action => app + request.path_with_query_string,
    :delegate => self
  }.merge(attrs), &block)
  
  # make sure form not already defined for this request
  @_forms ||= {}
  raise "page contains multiple forms named '#{temp_form.name}'" if @_forms.has_key?(temp_form.name)
  @_forms[temp_form.name] = @_form = temp_form
  
  # add data from request to form
  if params['form'] == @_form.name
    @_form.submitted = true
    @_form.params = params
  end
  
  @_form
end

#after_call ⇒ Object

Callback method: called after action call. Does nothing by default; override this method in your _action.rb or other action files.



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# File 'lib/kiss/action.rb', line 577

def after_call; end

#after_initialize ⇒ Object

Callback method: called after action handler initialized. Does nothing by default; override this method in your _action.rb or other action files.



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# File 'lib/kiss/action.rb', line 565

def after_initialize; end

#app_absolute_path(path) ⇒ Object

Convert specified action path by prefixing current action subdir, unless specified path starts with slash (/).



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# File 'lib/kiss/action.rb', line 478

def app_absolute_path(path)
  path !~ /\A\// ? self.class.subdir + '/' + path : path
end

#arg(index) ⇒ Object 



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# File 'lib/kiss/action.rb', line 254

def arg(index)
  @_args[index]
end

#arg_object(table, *args) ⇒ Object

Returns database model object from specified table, with column matching argument of specified index (defaults to first argument). Raises error if object not found in database or object data does not match desired_values.



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# File 'lib/kiss/action.rb', line 355

def arg_object(table, *args)
  index = args.first.is_a?(Numeric) ? args.shift : 0
  value = arg(index)
  
  column = args.first.is_a?(Symbol) ? args.shift : nil
  
  get_object_by_value(table, value, column, *args) || begin
    raise Kiss::FileNotFoundError::Object, "could not find #{table.to_s.singularize} with #{column || 'id'}=#{value} (arg #{index})"
  end
end

#arg_object_or_new(table, *args) ⇒ Object

Returns arg_object, or new object of specified table if arg_object fails.



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# File 'lib/kiss/action.rb', line 367

def arg_object_or_new(table, *args)
  begin
    arg_object(table, *args)
  rescue
    # remove non-hash arguments, looking for desired_values
    desired_values = args.last.is_a?(Hash) ? args.last : {}
    dbm[table].new(desired_values)
  end
end

#args ⇒ Object 



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# File 'lib/kiss/action.rb', line 258

def args
  @_args
end

#authenticate ⇒ Object

Does nothing by default; override this method in your _action.rb or other action files to specify authentication behavior.



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# File 'lib/kiss/action.rb', line 561

def authenticate; end

#before_call ⇒ Object

Callback method: called before action call. Does nothing by default; override this method in your _action.rb or other action files.



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# File 'lib/kiss/action.rb', line 569

def before_call; end

#breadcrumbs_html ⇒ Object 



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# File 'lib/kiss/action.rb', line 302

def breadcrumbs_html
  @breadcrumbs.map do |crumb|
    %Q(<a href="#{app + crumb[1]}">#{crumb[0]}</a> &gt;)
  end.join(' ')
end

#call ⇒ Object

Placeholder for generic actions that do nothing but render template. render is called from Kiss#call after this method returns.



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# File 'lib/kiss/action.rb', line 573

def call; end

#check_desired_values(object, desired_values = nil) ⇒ Object

Raises error if database model object does not match the key=value data in desired_values hash.



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# File 'lib/kiss/action.rb', line 319

def check_desired_values(object, desired_values = nil)
  if desired_values
    desired_values.each_pair do |key, value|
      unless object[key] == value
        raise "#{object.class.table.to_s.singularize} id=#{object.id} does not have #{key} == #{value.inspect}"
      end
    end
  end
  object
end

#context_class ⇒ Object 



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# File 'lib/kiss/action.rb', line 308

def context_class
  Kiss.context_class
end

#force_ssl(options = {}) ⇒ Object Also known as: force_https

Ensure that action requested via SSL; redirects to same action with https protocol if protocol is not https.



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# File 'lib/kiss/action.rb', line 581

def force_ssl(options = {})
  unless protocol == 'https'
    redirect_action(request.path_with_query_string, options.merge( :protocol => 'https' ))
  end
end

#form ⇒ Object

Returns most recently added form. Shorthand for forms when there is only one form.



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# File 'lib/kiss/action.rb', line 629

def form
  @_form
end

#form_action_match ⇒ Object

Returns true is ‘form’ param matches current action path.



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# File 'lib/kiss/action.rb', line 313

def form_action_match
  return params['form'] == action_path
end

#get_object_by_id(table, id, desired_values = nil) ⇒ Object

Verifies valid id value, selects database model object from specified table with specified id, and checks result to match desired_values.



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# File 'lib/kiss/action.rb', line 332

def get_object_by_id(table, id, desired_values = nil)
  id = id.to_i
  result = (id > 0) ? dbm[table][id] : nil
  raise "'#{table}' object not found" unless result
  
  check_desired_values(result, desired_values) 
end

#get_object_by_value(table, value, column, *args) ⇒ Object 



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# File 'lib/kiss/action.rb', line 340

def get_object_by_value(table, value, column, *args)
  desired_values = args.first
  if column
    result = dbm[table].where(column => value).first
    raise "'#{table}' object not found" unless result
    
    check_desired_values(result, desired_values) 
  else
    get_object_by_id(table, value, desired_values)
  end
end

#invoke_action(path, params = {}) ⇒ Object 



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# File 'lib/kiss/action.rb', line 633

def invoke_action(path, params = {})
  request.invoke_action(path, params).output
end

#is_delete? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kiss/action.rb', line 600

def is_delete?
  self.class.name == self.class.subdir + '/delete'
end

#is_edit? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kiss/action.rb', line 596

def is_edit?
  self.class.name == self.class.subdir + '/edit'
end

#is_index? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kiss/action.rb', line 588

def is_index?
  self.class.name == self.class.subdir + '/index'
end

#is_view? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kiss/action.rb', line 592

def is_view?
  self.class.name == self.class.subdir + '/view'
end

#new_email(options = {}) ⇒ Object

Creates and invokes new Kiss::Mailer instance to send email message via SMTP.



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# File 'lib/kiss/action.rb', line 416

def new_email(options = {})
  request.new_email({
    :data => data
  }.merge(options))
end

#next_arg_index ⇒ Object 



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# File 'lib/kiss/action.rb', line 377

def next_arg_index
  @_arg_index += 1
end

#next_arg_object(table, *args) ⇒ Object 



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# File 'lib/kiss/action.rb', line 381

def next_arg_object(table, *args)
  arg_object(table, next_arg_index, *args)
end

#next_arg_object_or_new(table, *args) ⇒ Object 



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# File 'lib/kiss/action.rb', line 385

def next_arg_object_or_new(table, *args)
  arg_object_or_new(table, next_arg_index, *args)
end

#param_object(table, key = nil, column = nil, *args) ⇒ Object

Returns database model object from specified table, with column matching param of specified key (defaults to singular form of table name). Raises error if object not found in database or object data does not match desired_values.



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# File 'lib/kiss/action.rb', line 392

def param_object(table, key = nil, column = nil, *args)
  key ||= table.to_s.singularize
  get_object_by_value(table, params[key.to_s], column, *args)
end

#param_object_or_new(table, *args) ⇒ Object

Returns param_object, or new object of specified table if param_object fails.



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# File 'lib/kiss/action.rb', line 398

def param_object_or_new(table, *args)
  param_object(table, *args) rescue begin
    desired_values = args.last.is_a?(Hash) ? args.last : {}
    dbm[table].new(desired_values)
  end
end

#redirect_action(action, options = {}) ⇒ Object

Redirects to specified action path, which may also include arguments.



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# File 'lib/kiss/action.rb', line 427

def redirect_action(action, options = {})
  # need to rewrite this if current action class looks up objects
  # by some other column than id
  if options.has_key?(:object)
    dest_object = options[:object]
    column = self.class.parent_class.object_options[:column]
    action = "#{@_object_part && '../'}#{"#{dest_object[column]}/" if dest_object}#{action}"
  end
  request.redirect_action( absolute_uri(action), options )
end

#redirect_index(options = {}) ⇒ Object

Redirects to index of the same action group.



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# File 'lib/kiss/action.rb', line 439

def redirect_index(options = {})
  redirect_action('', options.merge(:object => nil))
end

#redirect_object(object = nil, options = {}) ⇒ Object Also known as: redirect_view

Redirects to the view action on the object.



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# File 'lib/kiss/action.rb', line 444

def redirect_object(object = nil, options = {})
  if object.is_a?(Hash)
    options = object
    object = nil
  end
  object ||= options[:object] || @_object
  if object && !object.new?
    redirect_action('', {:object => object}.merge(options))
  else
    redirect_index(options)
  end
end

#redirect_pop(options = {}) ⇒ Object Also known as: redirect_breadcrumb

Redirects to index of the same action group.



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# File 'lib/kiss/action.rb', line 459

def redirect_pop(options = {})
  if @breadcrumbs.empty?
    redirect_index(options)
  else
    redirect_action(@breadcrumbs.last.last, options)
  end
end

#render(options = {}) ⇒ Object

Render and return response to Rack.



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# File 'lib/kiss/action.rb', line 551

def render(options = {})
  Dir.chdir(controller.project_dir)
  
  @_output = render_to_string(options)
  @_output_options = options
  throw :kiss_action_done
end

#render_action(path, options = {}) ⇒ Object 



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# File 'lib/kiss/action.rb', line 468

def render_action(path, options = {})
  action = request.render_action(
    absolute_uri(path),
    options[:params] || {}, {:layout => nil}
  )
  action.output
end

#render_to_string(options) ⇒ Object

Return string result from rendering specified string or template options.



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# File 'lib/kiss/action.rb', line 487

def render_to_string(options)
  if options.is_a?(String)
    options = {:template => options}
  elsif options[:text]
    return options[:text].to_s
  end
  
  if options.is_a?(Hash)
    @title = options[:title] if options.has_key?(:title)
    @layout = options[:layout] if options.has_key?(:layout)
    @breadcrumbs = options[:breadcrumbs] if options.has_key?(:breadcrumbs)
  end
  
  @@template_class ||= Kiss::Template.get_root_class(controller, controller.template_dir)
  
  content = options[:content].is_a?(String) ? begin
    template_class = @@template_class.get_subclass_from_path(self.class.subdir, 'rhtml')
    options[:content]
  end : begin
    path = @@template_class.get_template_path(
      {
        :template => template,
        :subdir => self.class.subdir,
        :extension => (extension == 'xls') ? 'txt' : extension
      }.merge(options)
    )
    template_class = @@template_class.get_subclass_from_path(path)
    template_class.new(request, self).call
  end
  
  unless defined?(@layout)
    @layout = extension == 'rhtml' ? self.class.layout || (template_class && template_class.layout) || '/_layout.rhtml' : nil
  end
  
  i = 0
  while @layout
    ext = options[:extension] || extension
    layout_path = @@template_class.get_template_path(
      :template => @layout,
      :subdir => self.class.subdir,
      :extension => (ext == 'xls') ? 'txt' : ext
    ) rescue break
    
    # cache layout for comparison after render
    prev_layout = @layout
    
    # process layout file
    layout_class = @@template_class.get_subclass_from_path(layout_path)
    content = layout_class.new(request, self).call(content)
    
    if @layout == prev_layout
      @layout = layout_class.parent_class.parent_class.layout
    end
  end
  
  # add a base tag in case of arguments appended to request URI
  if extension == 'rhtml' && (base_url = options.has_key?(:base_url) ? options[:base_url] : @base_url)
    content = content.prepend_html(%Q(<base href="#{base_url}" />), 'head')
  end
  
  content
end

#send_email(options = {}) ⇒ Object 



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# File 'lib/kiss/action.rb', line 422

def send_email(options = {})
  new_email(options).send
end

#validate_arg(format, index = 0, options = {}) ⇒ Object

Validates argument of specified index against specified format.



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# File 'lib/kiss/action.rb', line 411

def validate_arg(format, index = 0, options = {})
  @_args[index].validate(format, options.merge(:label => "arg #{index}"))
end

#validate_param(key, format, options = {}) ⇒ Object

Validates param of specified key against specified format.



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# File 'lib/kiss/action.rb', line 406

def validate_param(key, format, options = {})
  @_params[key.to_s].validate(format, options.merge(:label => "param '#{key}'"))
end