Module: Cocoon::ViewHelpers

Defined in:
lib/cocoon/view_helpers.rb

Instance Method Summary collapse

Instance Method Details

#create_object(f, association, force_non_association_create = false) ⇒ Object

creates new association object with its conditions, like “ has_many :admin_comments, class_name: “Comment”, conditions: { author: “Admin” } will create new Comment with author “Admin”



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# File 'lib/cocoon/view_helpers.rb', line 111

def create_object(f, association, force_non_association_create=false)
  assoc = f.object.class.reflect_on_association(association)

  assoc ? create_object_on_association(f, association, assoc, force_non_association_create) : create_object_on_non_association(f, association)
end

#get_partial_path(partial, association) ⇒ Object 



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# File 'lib/cocoon/view_helpers.rb', line 117

def get_partial_path(partial, association)
  partial ? partial : association.to_s.singularize + "_fields"
end

#link_to_add_association(*args, &block) ⇒ Object

shows a link that will allow to dynamically add a new associated object.

  • name : the text to show in the link

  • f : the form this should come in (the formtastic form)

  • association : the associated objects, e.g. :tasks, this should be the name of the has_many relation.

  • html_options: html options to be passed to link_to (see link_to)

    - *:render_options* : options passed to `simple_fields_for, semantic_fields_for or fields_for`
    - *:locals*     : the locals hash in the :render_options is handed to the partial
- *:partial*        : explicitly override the default partial name
- *:wrap_object*    : a proc that will allow to wrap your object, especially suited when using
                      decorators, or if you want special initialisation
- *:form_name*      : the parameter for the form in the nested form partial. Default `f`.
- *:count*          : Count of how many objects will be added on a single click. Default `1`.

  • *&block*: see link_to



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# File 'lib/cocoon/view_helpers.rb', line 72

def link_to_add_association(*args, &block)
  if block_given?
    link_to_add_association(capture(&block), *args)
  elsif args.first.respond_to?(:object)
    association = args.second
    name = I18n.translate("cocoon.#{association}.add", default: I18n.translate('cocoon.defaults.add'))

    link_to_add_association(name, *args)
  else
    name, f, association, html_options = *args
    html_options ||= {}

    render_options   = html_options.delete(:render_options)
    render_options ||= {}
    override_partial = html_options.delete(:partial)
    wrap_object = html_options.delete(:wrap_object)
    force_non_association_create = html_options.delete(:force_non_association_create) || false
    form_parameter_name = html_options.delete(:form_name) || 'f'
    count = html_options.delete(:count).to_i

    html_options[:class] = [html_options[:class], "add_fields"].compact.join(' ')
    html_options[:'data-association'] = association.to_s.singularize
    html_options[:'data-associations'] = association.to_s.pluralize

    new_object = create_object(f, association, force_non_association_create)
    new_object = wrap_object.call(new_object) if wrap_object.respond_to?(:call)

    html_options[:'data-association-insertion-template'] = CGI.escapeHTML(render_association(association, f, new_object, form_parameter_name, render_options, override_partial).to_str).html_safe

    html_options[:'data-count'] = count if count > 0

    link_to(name, '#', html_options)
  end
end

#link_to_remove_association(*args, &block) ⇒ Object

this will show a link to remove the current association. This should be placed inside the partial. either you give

  • name : the text of the link

  • f : the form this link should be placed in

  • html_options: html options to be passed to link_to (see link_to)

or you use the form without name with a *&block*

  • f : the form this link should be placed in

  • html_options: html options to be passed to link_to (see link_to)

  • *&block*: the output of the block will be show in the link, see link_to



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# File 'lib/cocoon/view_helpers.rb', line 16

def link_to_remove_association(*args, &block)
  if block_given?
    link_to_remove_association(capture(&block), *args)
  elsif args.first.respond_to?(:object)
    form = args.first
    association = form.object.class.to_s.tableize
    name = I18n.translate("cocoon.#{association}.remove", default: I18n.translate('cocoon.defaults.remove'))

    link_to_remove_association(name, *args)
  else
    name, f, html_options = *args
    html_options ||= {}

    is_dynamic = f.object.new_record?

    classes = []
    classes << "remove_fields"
    classes << (is_dynamic ? 'dynamic' : 'existing')
    classes << 'destroyed' if f.object.marked_for_destruction?
    html_options[:class] = [html_options[:class], classes.join(' ')].compact.join(' ')

    wrapper_class = html_options.delete(:wrapper_class)
    html_options[:'data-wrapper-class'] = wrapper_class if wrapper_class.present?

    f.hidden_field(:_destroy, value: f.object._destroy) + link_to(name, '#', html_options)
  end
end

#render_association(association, f, new_object, form_name, received_render_options = {}, custom_partial = nil) ⇒ Object

:nodoc:



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# File 'lib/cocoon/view_helpers.rb', line 45

def render_association(association, f, new_object, form_name, received_render_options={}, custom_partial=nil)
  partial = get_partial_path(custom_partial, association)
  render_options = received_render_options.dup
  locals =  render_options.delete(:locals) || {}
  ancestors = f.class.ancestors.map{|c| c.to_s}
  method_name = ancestors.include?('SimpleForm::FormBuilder') ? :simple_fields_for : (ancestors.include?('Formtastic::FormBuilder') ? :semantic_fields_for : :fields_for)
  f.send(method_name, association, new_object, {:child_index => "new_#{association}"}.merge(render_options)) do |builder|
    partial_options = {form_name.to_sym => builder, :dynamic => true}.merge(locals)
    render(partial, partial_options)
  end
end