Here's the structure of my code. I have a video attached with each cresponse and as far as I can tell I have been successful in uploading it. The problem comes when I need to convert it after the structure is saved. I wish to access the newly updated nested attribute (see lesson_controller) but am not sure how to go about doing so.
Many thanks!
Pier.
lesson.rb
class Lesson < ActiveRecord::Base
has_one :user
has_many :comments, :dependent => :destroy
has_many :cresponses, :dependent => :destroy
acts_as_commentable
accepts_nested_attributes_for :comments, :reject_if => lambda { |a| a[:body].blank? }, :allow_destroy => true
accepts_nested_attributes_for :cresponses
and here's cresponse.rb
class Cresponse < ActiveRecord::Base
belongs_to :lesson
attr_accessible :media, :accepted, :description, :user_id
# NOTE: Comments belong to a user
belongs_to :user, :polymorphic => true
# Paperclip
require 'paperclip'
has_attached_file :media,
:url => "/system/:lesson_id/:class/:basename.:extension",
:path => ":rails_root/public/system/:lesson_id/:class/:basename.:extension"
Here's my HTML view
<% #cresponse = #lesson.cresponses.build %>
<%= form_for #lesson, :html => { :multipart => true } do |f| %>
<td class="list_discussion" colspan="2">
<div class="field">
<%= f.fields_for :cresponses, #cresponse, :url => #cresponse, :html => { :multipart => true } do |builder| %>
Upload : <%= builder.file_field :media %><br />
Description : <%= builder.text_field :description %>
<%= builder.hidden_field :user_id , :value => current_user.id %>
<% end %>
</div>
</td>
and here's lesson_controller.rb - update
def update
#lesson = Lesson.find(params[:id])
respond_to do |format|
if #lesson.update_attributes(params[:lesson])
**if #lesson.cresponses.** <-- not sure how to find the cresponse that I need to convert
puts("Gotta convert this")
end
Think I should answer my own question ..
Basically for lesson_controller.rb
params[:lesson][:cresponses_attributes].values.each do |cr|
#cresponse_user_id = cr[:user_id]
#cresponse_description = cr[:description]
if cr[:media]
.... and so on
Related
I use paperclip to upload multi-file attached to studentcourseassignment,but i fail.
model
class StudentCourseAssignment < ActiveRecord::Base
attr_accessible :score, :comment, :finish_status,:attachments
accepts_nested_attributes_for :attachments
belongs_to :assignment
belongs_to :user
has_many :attachments ,:as => :attachmentable,:dependent => :destroy
end
class Attachment < ActiveRecord::Base
attr_accessible :user_upload
belongs_to :attachmentable , :polymorphic => true
has_attached_file :user_upload
end
controller
**new**
#sca = StudentCourseAssignment.new
#sca.attachments.build
#sca.attachments.build
**create**
#sca = StudentCourseAssignment.new(params[:student_course_assignment])
#assignment = Assignment.find(params[:assignment_id])
#sca.user = current_user
#sca.assignment = #assignment
if #sca.save
flash[:alert] = "success"
redirect_to course_years_path
else
flash[:alert] = "fail"
redirect_to course_years_path
end
** view**
<%= form_for #sca, :url => assignment_student_course_assignments_path(#assignment),
:html => { :id => 'student-assignment-form', :multipart => true } do |f| %>
file:
<%= f.fields_for :attachments do |a_f| %>
<%= a_f.file_field :user_upload %>
<%= submit_tag "create" %>
<% end%>
<% end %>
wrong
No association found for name `attachments'. Has it been defined yet?
if remove accepts_nested_attributes_for :attachments，it's still wrong
Attachment(#70201401779680) expected, got Array(#70201383294620)
hope your help!thx!
Change
from:
attr_accessible :score, :comment, :finish_status,:attachments
to:
attr_accessible :score, :comment, :finish_status,:attachments_attributes
I realize this is an old question, but fwiw I think you'll need to move
accepts_nested_attributes_for :attachments
to appear after
has_many :attachments, :as => :attachmentable,:dependent => :destroy
I hit this in a project once myself; pretty sure it boils down to accepts_nested_attributes_for expecting the relation to already be declared before its invoked.
I have been developing a rails app that uploads and processes images. Images, along with other string information is submitted via a form_for. I've been researching this topic for about 16 hours now and no solution has worked. Honestly it's like rails isn't even reading my code.
One Processmodel has many Assets, where an Asset is just a model to hold one image file. When creating processmodels, I can never access the asset, always recieving the cannot mass-assign attirbutes: assets_attributes
Completed 500 Internal Server Error in 13ms
ActiveModel::MassAssignmentSecurity::Error (Can't mass-assign protected attributes: asset):
app/controllers/process_controller.rb:20:in `new'
app/controllers/process_controller.rb:20:in `create'
-
This form is used in new.html.erb
<%= semantic_form_for #processmodel, :url => { :action => 'create' }, :html => { :multipart => true } do |f| %>
<%= f.input :batch, :as => :string, :name => "Batch" %>
<%= f.input :batchset, :as => :string, :name => "Batchset" %>
<%= f.input :numSlots, :as => :number, :name => "Number of slots" %>
<%= f.input :key, :as => :file, :name => "Key" %>
<%= f.semantic_fields_for :asset do |asset| %>
<%= asset.input :asset, :as => :file, :label => "Image" %>
<% end %><br />
<%= f.submit %>
<% end %>
-
class Processmodel < ActiveRecord::Base
attr_accessible :user_id, :batch,
:batchset, :numSlots,
:key,:assets_attributes
attr_accessor :key_file_name
has_many :assets, :dependent => :destroy
belongs_to :user
has_attached_file :key
# :url => Rails.root.join('/assets/readimages/:basename.:extension'),
# :path => Rails.root.join('/assets/readimages/:basename.:extension'),
accepts_nested_attributes_for :assets, :allow_destroy => true
.
.
.
end
-
require 'RMagick'
class Asset < ActiveRecord::Base
attr_accessible :results_string,
:name,
:ambiguous_results,
:image
belongs_to :batch_element
belongs_to :processmodel
has_attached_file :image
validates_attachment_presence :image
end
-
class ProcessController < ApplicationController
def create
#Processmodel = Processmodel.new(params[:processmodel])
#Processmodel.save
all_img = Array.new(#processmodel.assets.all)
respond_to do |format|
if #processmodel.beginRead(...)
redirect_to :action => 'results_main', :controller => 'results'
else
format.html { render action: "new" }
end
end
end
-
def new
#processmodel = Processmodel.new
#5.times{#processmodel.assets.build}
respond_to do |format|
format.html #new.html.erb
end
end
Am requesting an ideas on how to fix this and get my app working.
You need to update your database migration. Run:
rails g migration AddIdToAsset processmodel_id:integer
rake db::migrate
You've called your attached file :image here:
has_attached_file :image
But you call it :asset in your view:
<%= asset.input :asset, :as => :file, :label => "Image" %>
To fix, just change this line to
<%= asset.input :image, :as => :file, :label => "Image" %>
I have this structure models
class Tournament < ActiveRecord::Base
AGES = ["5u", "6u", "7u", "8u"]
has_many :courts, :dependent => :destroy
accepts_nested_attributes_for :courts, :reject_if => lambda { |a| a[:name].blank? }, :allow_destroy => true
class Court < ActiveRecord::Base
belongs_to :tournament, :autosave => true
has_many :ages, :dependent => :destroy
accepts_nested_attributes_for :ages, :reject_if => lambda { |a| a[:name].blank? }, :allow_destroy => true
class Age < ActiveRecord::Base
belongs_to :court
Now my forms look like this
_form.html.erb
<%= semantic_form_for #tournament do |f| %>
<%= f.inputs do %>
<%= f.input :name, :hint => "What is the name of the Tournament?" %>
<%= f.semantic_fields_for :courts do |builder| %>
<%= render :partial => "court_fields", :locals => { :f => builder } %>
<% end %>
_court_fields.html.erb
<div class="nested_fields">
<%= f.input :name, :input_html => {:class => "name"} %>
<%= f.semantic_fields_for :ages do |builder| %>
<%= render :partial => "age_fields", :locals => { :f => builder } %>
<% end %>
_age_fields.html.erb
Testing ...am I getting in here
<%= f.input :name, :as => :check_boxes, :collection => Tournament::AGES, :input_html => {:class => "age_limits"} %>
everything seems to work well except nothing shows up in the ages_fields partial...not the checkboxes and not even the dummy text Testing ...am I getting in here is not displaying....any ideas what could be causing the issue
The obvious reason I can think of: are you sure your Court has ages ?
[EDIT] That the Court has the relation was indeed clear to me.
But your code will only show an age for a court if it already exists.
From your output in the comments: the court has no actual ages so no ages are shown.
If you do this in your controller:
def new
#tournament = Tournament.new
#tournament.courts.build
#tournament.courts[0].ages.build
end
This will make sure that you have at least one (empty) court and one (empty) age.
Otherwise you could also consider using a gem like cocoon to dynamically add new elements if needed.
Hope this helps.
I have a Carrierwave image upload in a nested simple_form which works (sort of) unless the user does not specify a file, in which case a blank Picture object is created unless there was a previously existing one. Not quite sure how to make it so that if the user doesn't specify a "new" image to upload, the old one isn't deleted and/or a blank record without a file is created.
One (maybe odd) thing I am doing is always sending the logged in #user to the user#edit action, then building a #user.picture if it doesn't exist. I am thinking this is where my bad design is.
# user.rb
class User < ActiveRecord::Base
[...]
has_one :picture, :dependent => :destroy
accepts_nested_attributes_for :picture
[...]
end
# picture.rb
class Picture < ActiveRecord::Base
attr_accessible :image, :remove_image
belongs_to :user
mount_uploader :image, ImageUploader
end
# users_controller.rb
def edit
if #user.picture.nil?
#user.build_picture
end
end
#_form.html.erb
<%= simple_form_for #user, :html => {:multipart => true} do |f| %>
<%= render "shared/error_messages", :target => #user %>
<h2>Picture</h2>
<%= f.simple_fields_for :picture do |pic| %>
<% if #user.picture.image? %>
<%= image_tag #user.picture.image_url(:thumb).to_s %>
<%= pic.input :remove_image, :label => "Remove", :as => :boolean %>
<% end %>
<%= pic.input :image, :as => :file, :label => "Picture" %>
<%= pic.input :image_cache, :as => :hidden %>
<% end %>
<br/>
#rest of form here
<% end %>
I think I had the same issue which I solved by adding a reject_if option to the accepts_nested_attribute. So in your example, you could do something like
class User < ActiveRecord::Base
[...]
has_one :picture, :dependent => :destroy
accepts_nested_attributes_for :picture,
:reject_if => lambda { |p| p.image.blank? }
[...]
end
When you use build_* it sets the foreign key on the object. ( similar to saying Picture.new(:user_id => id) )
Try This
# users_controller.rb
def edit
if #user.picture.nil?
#user.picture = Picture.new
end
end
Today I had the same problem, I solved this like:
accepts_nested_attributes_for :photos,
:reject_if => :all_blank
I have a three-level multi-nested form in Rails. The setup is like this: Projects have many Milestones, and Milestones have many Notes. The goal is to have everything editable within the page with JavaScript, where we can add multiple new Milestones to a Project within the page, and add new Notes to new and existing Milestones.
Everything works as expected, except that when I add new notes to an existing Milestone (new Milestones work fine when adding notes to them), the new notes won't save unless I edit any of the fields that actually belong to the Milestone to mark the form "dirty"/edited.
Is there a way to flag the Milestone so that the new Notes that have been added will save?
Edit: sorry, it's hard to paste in all of the code because there's so many parts, but here goes:
Models
class Project < ActiveRecord::Base
has_many :notes, :dependent => :destroy
has_many :milestones, :dependent => :destroy
accepts_nested_attributes_for :milestones, :allow_destroy => true
accepts_nested_attributes_for :notes, :allow_destroy => true, :reject_if => proc { |attributes| attributes['content'].blank? }
end
class Milestone < ActiveRecord::Base
belongs_to :project
has_many :notes, :dependent => :destroy
accepts_nested_attributes_for :notes, :allow_destroy => true, :allow_destroy => true, :reject_if => proc { |attributes| attributes['content'].blank? }
end
class Note < ActiveRecord::Base
belongs_to :milestone
belongs_to :project
scope :newest, lambda { |*args| order('created_at DESC').limit(*args.first || 3) }
end
I'm using an jQuery-based, unobtrusive version of Ryan Bates' combo helper/JS code to get this done.
Application Helper
def add_fields_for_association(f, association, partial)
new_object = f.object.class.reflect_on_association(association).klass.new
fields = f.fields_for(association, new_object, :child_index => "new_#{association}") do |builder|
render(partial, :f => builder)
end
end
I render the form for the association in a hidden div, and then use the following JavaScript to find it and add it as needed.
JavaScript
function addFields(link, association, content, func) {
var newID = new Date().getTime();
var regexp = new RegExp("new_" + association, "g");
var form = content.replace(regexp, newID);
var link = $(link).parent().next().before(form).prev();
if (func) {
func.call();
}
return link;
}
I'm guessing the only other relevant piece of code that I can think of would be the create method in the NotesController:
def create
respond_with(#note = #owner.notes.create(params[:note])) do |format|
format.js { render :json => #owner.notes.newest(3).all.to_json }
format.html { redirect_to((#milestone ? [#project, #milestone, #note] : [#project, #note]), :notice => 'Note was successfully created.') }
end
end
The #owner ivar is created in the following before filter:
def load_milestone
#milestone = #project.milestones.find(params[:milestone_id]) if params[:milestone_id]
end
def determine_owner
#owner = load_milestone || #project
end
Thing is, all this seems to work fine, except when I'm adding new notes to existing milestones. The milestone has to be "touched" in order for new notes to save, or else Rails won't pay attention.
This is bug #4242 in Rails 2.3.5 and it has been fixed in Rails 2.3.8.
i think your models are wrong. the notes have no direct relationship to project. they are through milestones.
try these
class Project < ActiveRecord::Base
has_many :milestones, :dependent => :destroy
has_many :notes, :through => :milestones
accepts_nested_attr ibutes_for :milestones, :allow_destroy => true
end
class Milestone < ActiveRecord::Base
belongs_to :project
has_many :notes, :dependent => :destroy
accepts_nested_attributes_for :notes, :allow_destroy => true, :reject_if => proc { |attributes| attributes['content'].blank? }
end
class Note < ActiveRecord::Base
belongs_to :milestone
end
Update: here is the code that worked for me based on the new info:
## project controller
# PUT /projects/1
def update
#project = Project.find(params[:id])
if #project.update_attributes(params[:project])
redirect_to(#project)
else
render :action => "edit"
end
end
# GET /projects/1/edit
def edit
#project = Project.find(params[:id])
#project.milestones.build
for m in #project.milestones
m.notes.build
end
#project.notes.build
end
## edit.html.erb
<% form_for(#project) do |f| %>
<%= f.error_messages %>
<p>
<%= f.label :name %><br />
<%= f.text_field :name %>
</p>
<% f.fields_for :notes do |n| %>
<p>
<div>
<%= n.label :content, 'Project Notes:' %>
<%= n.text_area :content, :rows => 3 %>
</div>
</p>
<% end %>
<% f.fields_for :milestones do |m| %>
<p>
<div>
<%= m.label :name, 'Milestone:' %>
<%= m.text_field :name %>
</div>
</p>
<% m.fields_for :notes do |n| %>
<p>
<div>
<%= n.label :content, 'Milestone Notes:' %>
<%= n.text_area :content, :rows => 3 %>
</div>
</p>
<% end %>
<% end %>
<p>
<%= f.submit 'Update' %>
</p>
<% end %>