Module: ContextualLinkHelpers

Defined in:
lib/contextual_link_helpers.rb

Instance Method Summary collapse

Instance Method Details



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# File 'lib/contextual_link_helpers.rb', line 10

def contextual_link_to(action, resource_or_model = nil, link_options = {})
  # We don't want to change the passed in link_options
  options = link_options.dup

  # Handle both symbols and strings
  action = action.to_s
  
  # Resource and Model setup
  # Use controller name to guess resource or model if not specified
  case action
  when 'new', 'index'
    model = resource_or_model || controller_name.singularize.camelize.constantize
  when 'show', 'edit', 'delete'
    resource = resource_or_model || instance_variable_get("@#{controller_name.singularize}")
    model = resource.class
  end
  model_name = model.to_s.underscore
  
  # No link if CanCan is used and current user isn't authorized to call this action
  return if respond_to?(:cannot?) and cannot?(action.to_sym, model)
  
  # Option generation
  case action
  when 'delete'
    options.merge!(:confirm => t_confirm_delete(resource), :method => :delete)
  end

  # Path generation
  case action
  when 'index'
    if model
      path = polymorphic_path(model)
    else
      path = url_for(:action => nil)
    end
  when 'show', 'delete'
    if resource
      path = polymorphic_path(resource)
    else
      return
    end
  else
    if resource_or_model
      path = polymorphic_path(resource_or_model, :action => action)
    else
      path = url_for(:action => action)
    end
  end

  return icon_link_to(action, path, options)
end

#contextual_links(action = nil, resource_or_model = nil, options = {}) ⇒ Object 



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# File 'lib/contextual_link_helpers.rb', line 86

def contextual_links(action = nil, resource_or_model = nil, options = {})
  content_tag('div', :class => 'contextual') do
    contextual_links_for(action, resource_or_model, options)
  end
end

#contextual_links_for(action = nil, resource_or_model = nil, options = {}) ⇒ Object 



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# File 'lib/contextual_link_helpers.rb', line 62

def contextual_links_for(action = nil, resource_or_model = nil, options = {})
  # Use current action if not specified
  action ||= action_name
  
  # Handle both symbols and strings
  action = action.to_s
  
  actions = []
  case action
  when 'new', 'create'
    actions << 'index'
  when 'show'
    actions += ['edit', 'delete', 'index']
  when 'edit', 'update'
    actions += ['show', 'delete', 'index']
  when 'index'
    actions << 'new'
  end
  
  links = actions.map{|link_for| contextual_link_to(link_for, resource_or_model, options)}
  
  return links.join("\n").html_safe
end

#icon_link_to(action, url = nil, options = {}) ⇒ Object

CRUD helpers



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# File 'lib/contextual_link_helpers.rb', line 3

def icon_link_to(action, url = nil, options = {})
  url ||= {:action => action}
  options.merge!(:class => "icon icon-#{action}")
  
  link_to(t_action(action), url_for(url), options)
end