CarrierWave and nested forms saving empty image object if photo :title is included in form
- by Wasabi Developer
I'm after some advice in regards to handling nested form data and I would be ever so grateful for any insights.
The trouble is I'm not 100% sure why I require the following code in my model
accepts_nested_attributes_for :holiday_image, allow_destroy: true, :reject_if => lambda { |a| a[:title].blank? }
If I don't understand why I require to tact on on my accepts_nested_attributes_for association:
:reject_if => lambda { |a| a[:title].blank? }
If I remove this :reject_if lambda, it will save a blank holiday photo object in the database. I presume because it takes the :title field from the form as an empty string?
I guess my question is, am I doing this right or is there a better way of this this within nested forms if I want to extend my HolidayImage model to include more strings like description, notes?
Sorry If I can't be more succinct.
My simple holiday app.
# holiday.rb
class Holiday < ActiveRecord::Base
has_many :holiday_image
accepts_nested_attributes_for :holiday_image, allow_destroy: true, :reject_if => lambda { |a| a[:title].blank? }
attr_accessible :name, :content, :holiday_image_attributes
end
I'm using CarrierWave for image uploads.
# holiday_image.rb
class HolidayImage < ActiveRecord::Base
belongs_to :holiday
attr_accessible :holiday_id, :image, :title
mount_uploader :image, ImageUploader
end
Inside my _form partial there is a field_for block
<h3>Photo gallery</h3>
<%= f.fields_for :holiday_image do |holiday_image| %>
<% if holiday_image.object.new_record? %>
<%= holiday_image.label :title, "Image Title" %>
<%= holiday_image.text_field :title %>
<%= holiday_image.file_field :image %>
<% else %>
Title: <%= holiday_image.object.title %>
<%= image_tag(holiday_image.object.image.url(:thumb)) %>
Tick to delete: <%= holiday_image.check_box :_destroy %>
<% end %>
Thanks again for your patience.
