module NestedForm::BuilderMixin
Public Instance Methods
fields_for_nested_model(name, object, options, block)
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Calls superclass method
# File lib/nested_form/builder_mixin.rb, line 90 def fields_for_nested_model(name, object, options, block) classes = 'fields' classes << ' marked_for_destruction' if object.respond_to?(:marked_for_destruction?) && object.marked_for_destruction? perform_wrap = options.fetch(:nested_wrapper, true) perform_wrap &&= options[:wrapper] != false # wrap even if nil if perform_wrap @template.content_tag(:div, super, :class => classes) else super end end
fields_for_with_nested_attributes(association_name, *args)
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Calls superclass method
# File lib/nested_form/builder_mixin.rb, line 74 def fields_for_with_nested_attributes(association_name, *args) # TODO Test this better block = args.pop || Proc.new { |fields| @template.render(:partial => "#{association_name.to_s.singularize}_fields", :locals => {:f => fields}) } options = args.dup.extract_options! # Rails 3.0.x if options.empty? && args[0].kind_of?(Array) options = args[0].dup.extract_options! end @fields ||= {} @fields[fields_blueprint_id_for(association_name)] = { :block => block, :options => options } super(association_name, *(args << block)) end
link_to_add(*args, &block)
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Adds a link to insert a new associated records. The first argument is the name of the link, the second is the name of the association.
f.link_to_add("Add Task", :tasks)
You can pass HTML options in a hash at the end and a block for the content.
<%= f.link_to_add(:tasks, :class => "add_task", :href => new_task_path) do %> Add Task <% end %>
You can also pass model_object
option with an object for use
in the blueprint, e.g.:
<%= f.link_to_add(:tasks, :model_object => Task.new(:name => 'Task')) %>
See the README for more details on where to call this method.
# File lib/nested_form/builder_mixin.rb, line 19 def link_to_add(*args, &block) options = args.extract_options!.symbolize_keys association = args.pop unless object.respond_to?("#{association}_attributes=") raise ArgumentError, "Invalid association. Make sure that accepts_nested_attributes_for is used for #{association.inspect} association." end model_object = options.delete(:model_object) do reflection = object.class.reflect_on_association(association) reflection.klass.new end options[:class] = [options[:class], "add_nested_fields"].compact.join(" ") options["data-association"] = association options["data-blueprint-id"] = fields_blueprint_id = fields_blueprint_id_for(association) args << (options.delete(:href) || "javascript:void(0)") args << options @fields ||= {} @template.after_nested_form(fields_blueprint_id) do blueprint = {:id => fields_blueprint_id, :style => 'display: none'} block, options = @fields[fields_blueprint_id].values_at(:block, :options) options[:child_index] = "new_#{association}" blueprint[:"data-blueprint"] = fields_for(association, model_object, options, &block).to_str @template.content_tag(:div, nil, blueprint) end @template.link_to(*args, &block) end
link_to_remove(*args, &block)
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Adds a link to remove the associated record. The first argment is the name of the link.
f.link_to_remove("Remove Task")
You can pass HTML options in a hash at the end and a block for the content.
<%= f.link_to_remove(:class => "remove_task", :href => "#") do %> Remove Task <% end %>
See the README for more details on where to call this method.
# File lib/nested_form/builder_mixin.rb, line 60 def link_to_remove(*args, &block) options = args.extract_options!.symbolize_keys options[:class] = [options[:class], "remove_nested_fields"].compact.join(" ") # Extracting "milestones" from "...[milestones_attributes][...]" md = object_name.to_s.match /(\w+)_attributes\]\[[\w\d]+\]$/ association = md && md[1] options["data-association"] = association args << (options.delete(:href) || "javascript:void(0)") args << options hidden_field(:_destroy) << @template.link_to(*args, &block) end
Private Instance Methods
fields_blueprint_id_for(association)
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# File lib/nested_form/builder_mixin.rb, line 106 def fields_blueprint_id_for(association) assocs = object_name.to_s.scan(/(\w+)_attributes/).map(&:first) assocs << association assocs.join('_') + '_fields_blueprint' end