passing id parameter to new create action - Rails 4 - ruby-on-rails-4

Question

Could one kindly advise me how to pass an id through the actions new and create. I have tried many ways to get this right but unfortunately no success.
what i am aiming to do is, when a jobseeker (user) fills in an
application and the application fails the validations, i want a new
form to render with the advert_id passed through
i have a job advert in which i have passed the advert_id in the apply button
advert/show.html.erb
<div class="advert_summary">
<ul class="content">
<li><%= #advert.currency %><%= #advert.salarystart %> - <%= #advert.currency %><%= #advert.salaryend %> <%= #advert.category_period.name %></li>
<li>Job Type: <%= #advert.category_jobtype.name %></li>
<li>Job Ref: #<%= #advert.reference %></li>
<li>Posted: <%= #advert.created_at.strftime("%b %d, %Y") %></li>
<li>Deadline: <%= #advert.appdeadline.strftime("%b %d, %Y") %></li>
</ul>
</div>
<button><%= link_to 'Apply for job', new_form_path(advert_id: #advert.id) %></button>
i have the advert_id as a hidden field in my form (the application form for the job)
forms/_form.html.erb
<div>
<h2>Application Form</h2>
<%= simple_form_for(#form) do |f| %>
<%= f.error_notification %>
<div class="form-inputs">
<%= f.input_field :firstname, value: current_user.firstname, label: "firstname", placeholder: "first name" %>
<%= f.input_field :lastname, value: current_user.lastname, label: "lastname", placeholder: "last name" %>
<%= f.input_field :tel, value: current_user.tel, label: "number", placeholder: "number" %>
<%= f.input_field :email, value: current_user.email, label: "email", placeholder: "email" %>
<%= f.hidden_field :advert_id, value: params[:advert_id] %>
</div>
<div class="form-actions">
<%= f.button :submit, 'Submit Application' %>
</div>
<% end %>
</div>
in my controller forms_controller.rb i have stated the below for the create action
class FormsController < ApplicationController
respond_to :html, :xml, :json
before_action :set_form, only: [:show, :edit, :update, :destroy]
def new
#advert = Advert.find(params[:advert_id])
#user = current_user
#form = Form.new
#search = Advert.search(params[:q])
#adverts = #search.result(distinct: true)
end
def create
#user = current_user
#form = Form.new(form_params)
#advert = #form.advert
#form.user_id = current_user.id
#advert = #form.advert
if #form.save
redirect_to application_submitted_path
else
redirect_to :action => :new, :advert_id => #form.advert_id
# render :new, :advert_id => #form.advert_id
# redirect_to :action => :new, :advert_id => #form.advert_id
# redirect_to user_advert_path(#form.advert.user, #form.advert)
# respond_with(#form)
end
end
end
models
advert.rb
has_many forms
form.rb
belongs_to advert
belongs_to user (jobseeker)
user.rb (jobseeker)
has_many forms
schemas.rb
create_table "forms", force: true do |t|
t.integer "advert_id"
t.integer "user_id"
end
create_table "adverts", force: true do |t|
t.string "title"
t.text "content"
t.integer "salarystart"
t.integer "salaryend"
t.string "reference"
end
create_table "users", force: true do |t|
t.string "email",
t.string "firstname"
t.string "lastname"
end
when the jobseeker completes the application form
(forms/_form.html.erb) and the validation fails the jobseeker(user) is
directed to a new form with the advert_id passed through redirect_to
:action => :new, :advert_id => #form.advert_id
this directs me to a new form, i can see the advert_id has been passed
through the url but the form will not submit and error messages are
not being displayed.
could one kindly advise me how to successfully pass an id through the
actions new and create or where i am going wrong many thanks

Answer 1

Try this
forms/_form.html.erb
<div>
<h2>Application Form</h2>
<%= simple_form_for(#form) do |f| %>
<%= f.error_notification %>
<div class="form-inputs">
<%= f.input_field :firstname, value: current_user.firstname, label: "firstname", placeholder: "first name" %>
<%= f.input_field :lastname, value: current_user.lastname, label: "lastname", placeholder: "last name" %>
<%= f.input_field :tel, value: current_user.tel, label: "number", placeholder: "number" %>
<%= f.input_field :email, value: current_user.email, label: "email", placeholder: "email" %>
<%= f.hidden_field :advert_id, value: #advert_id %>
</div>
<div class="form-actions">
<%= f.button :submit, 'Submit Application' %>
</div>
<% end %>
</div>
class FormsController < ApplicationController
respond_to :html, :xml, :json
before_action :set_form, only: [:show, :edit, :update, :destroy]
def new
#advert = Advert.find(params[:advert_id])
#user = current_user
#form = Form.new
#search = Advert.search(params[:q])
#advert_id = params[:advert_id]
#adverts = #search.result(distinct: true)
end
def create
#user = current_user
#form = Form.new(form_params)
#advert = #form.advert
#form.user_id = current_user.id
#advert_id = params[:form][:advert_id]
#advert = #form.advert
respond_to do |format|
if #form.save
format.html { redirect_to #form, notice: 'Created.' }
format.json { render :show, status: :created, location: #form }
else
format.html { render :new }
format.json { render json: #form.errors, status: :unprocessable_entity }
end
end
end
end