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”



107
108
109
110
111
# File 'lib/cocoon/view_helpers.rb', line 107

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



113
114
115
# File 'lib/cocoon/view_helpers.rb', line 113

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

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



68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
# File 'lib/cocoon/view_helpers.rb', line 68

def link_to_add_association(*args, &block)
  if block_given?
    f            = args[0]
    association  = args[1]
    html_options = args[2] || {}
    link_to_add_association(capture(&block), f, association, html_options)
  else
    name         = args[0]
    f            = args[1]
    association  = args[2]
    html_options = args[3] || {}

    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

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



16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
# File 'lib/cocoon/view_helpers.rb', line 16

def link_to_remove_association(*args, &block)
  if block_given?
    f            = args.first
    html_options = args.second || {}
    name         = capture(&block)
    link_to_remove_association(name, f, html_options)
  else
    name         = args[0]
    f            = args[1]
    html_options = args[2] || {}

    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?

    hidden_field_tag("#{f.object_name}[_destroy]", f.object._destroy) + link_to(name, '#', html_options)
  end
end

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

:nodoc:



43
44
45
46
47
48
49
50
51
# File 'lib/cocoon/view_helpers.rb', line 43

def render_association(association, f, new_object, form_name, render_options={}, custom_partial=nil)
  partial = get_partial_path(custom_partial, association)
  locals =  render_options.delete(:locals) || {}
  method_name = f.respond_to?(:semantic_fields_for) ? :semantic_fields_for : (f.respond_to?(:simple_fields_for) ? :simple_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