Form Fields Database save

rubyonrails-talk
1

Hello! I have a little problem saving some data in database... I have to models..... class Lesson < ActiveRecord::Base    has_many :sublessons, :dependent => :destroy    accepts_nested_attributes_for :sublessons end

and

class Sublesson < ActiveRecord::Base   belongs_to :lesson   validates :subblesson_name, presence: true   validates :sublesson_content ,presence: true end

I generated a form for add another sublesson like this (i know isn't best way but i don't find another way)

<div style="padding:13px">     <%= form_for @lesson do |f| %>     <%= f.label :lesson_name, "Lesson title" %></br>     <%= f.text_field :lesson_name, class: "form-control" %></br>     <%= f.label :lesson_icon, "Choise icon" %>     <%= f.select "lesson_icon", options_for_select([ "ico03", "ico04","ico05","ico06" ])%></br></br>

    <div>     <%= f.fields_for :sublesson do |sublesson_a| %>           <%= sublesson_a.label :sublesson_name, "Subtitle 1" %></br> <%= sublesson_a.text_field :sublesson_name, class: "form-control" %></br> <%= sublesson_a.label :sublesson_content, "Content" %></br>            <%=sublesson_a.text_area 'sublesson_content', rows: 3, class: 'form-control'%></br>            <%= sublesson_a.label :sublesson_video_link, "Video link" %><br>            <%= sublesson_a.text_field :sublesson_video_link, class: "form-control" %></br>          </div>

         <%=(1..50).each do |i|%>          <div class="add_new_subtitle">           <%= sublesson_a.label :sublesson_name, "Subtitle 1" %></br>           <%= sublesson_a.text_field :sublesson_name, class: "form-control" %></br>           <%= sublesson_a.label :sublesson_content, "Content" %></br>           <%=sublesson_a.text_area 'sublesson_content', rows: 3, class: 'form-control'%></br>           <%= sublesson_a.label :sublesson_video_link, "Video link" %><br>           <%= sublesson_a.text_field :sublesson_video_link, class: "form-control" %></br>         </div>         <%end%>

        <%end%>         <a href="javascript:;" style="float:right" class="btn btn-primary" id="addNewTag">Add Sublesson</a>         <%= f.submit "Submit", class: "btn btn-primary" %>         <% end %>

      </div>

This is my methods def create #render text: params.inspect @lesson = Lesson.new(lesson_params)   if @lesson.save   flash[:notice] = "You have successfully add a lesson."         redirect_to lessons_new_lesson_url   else         flash[:notice] = "Failed."   #redirect_to pages_add_lesson_url   end end def new   @lesson=Lesson.new   @lesson.build_sublesson end private def lesson_params     params.require(:lesson).permit(    :lesson_name, :lesson_icon, sublesson_attributes:[:sublesson_name, :sublesson_content, :sublesson_video_link]) end

I want to save those data in database but i don't succeed. i try a lot of ways....PLease tell me an option..Thanks(i'm running rails 4.1.1 and ruby 2.0.0)

2

I should modify the way you build (initialize) the sublesson in #new action of the controller.

instead of calling:

@lesson.build_sublesson

``

you should do it as follows:

@lesson.sublessons.build #to build just one sublesson

".times { @lesson.sublessons.build} #to build just 3 sublessons

``

3

Still no efect..... I don't know if this function is good.... def lesson_params     params.require(:lesson).permit(       :lesson_name, :lesson_icon, sublesson_attributes:[:sublesson_name, :sublesson_content, :sublesson_video_link])   end

4

See inside of your log file or terminal, may be you’ll more details there.

5

Parameters: {"utf8"=>"√", "authenticity_token"=>"25UUu0M740UaYjPKW2Vr5370TUn3s eK/yUiYd/7PfYk=", "lesson"=>{"lesson_name"=>"asdaas", "lesson_icon"=>"ico03", "s ublesson"=>{"sublesson_name"=>"asd", "sublesson_content"=>"asd", "sublesson_vide o_link"=>"asd"}}, "commit"=>"Submit"} Unpermitted parameters: sublesson    (0.0ms) BEGIN   SQL (53.0ms) INSERT INTO `lessons` (`lesson_icon`, `lesson_name`) VALUES ('ic o03', 'asdaas')    (1.0ms) COMMIT Redirected to http://localhost:3000/lessons/new_lesson

isn't making the insert...but why?

6

As you can see, the problem comes from permitted params for sublesson in your controller. Replace ‘sublesson_attributes’ by sublesson.

7

I don’t believe this is the code you’re actually running. The form below refers to sublesson (no s), and the use of @lesson.build_sublesson in the controller also strongly suggests you’ve actually got a has_one :sublesson in your model.

Once you fix that, take a look at a good tutorial for nested attributes + forms; this one seems solid:

http://archives.ryandaigle.com/articles/2009/2/1/what-s-new-in-edge-rails-nested-attributes

Related: you’ll get better support if you can provide more detail than “I didn’t succeed”. Log messages, etc are hugely important. Also, when in doubt try restarting the rails s process. :slight_smile:

–Matt Jones