'New' method not found in Rails app, but it exists - ruby-on-rails

Question

Apologies in advance if this is a stupid question. I am learning Rails from scratch, so thanks for bearing with me.
So, I have a 'Person' model, shown below
class Person < ActiveRecord::Base
belongs_to :team
has_and_belongs_to_many :events, through: :event_people
validates :first_name, presence: true, length: { maximum: 255 }
validates :last_name, presence: true, length: { maximum: 255 }
validates :email, presence: true, length: { maximum: 255 }
end
and have created a form to create a new person, with associated team ID
<h1>Add new person</h1>
<div class="row">
<div class="col-md-8">
<%= form_with url: new_person_path do |person| %>
<div class="form-group">
<%= person.label :first_name %>
<%= person.text_field :name, id: :person_first_name, class:"form-control" %>
</div>
<div class="form-group">
<%= person.label :last_name %>
<%= person.text_field :name, id: :person_last_name, class:"form-control" %>
</div>
<div class="form-group">
<%= person.label :email %>
<%= person.text_field :email, id: :person_email, class:"form-control" %>
</div>
<div class="form-group">
<%= person.label :job_title %>
<%= person.text_field :job_title, id: :person_job_title, class:"form-control" %>
</div>
<div class="form-group">
<% #teams = Team.all %>
<%= person.label :team %>
<%= person.select(:team_id, #teams.collect{|a| [a.name, a.id]}, { include_blank: true }, {:class => "form-control"}) %>
</div>
<div class="actions">
<%= person.submit 'Submit button', {:class => 'btn btn-primary'}%>
</div>
<% end %>
</div>
</div>
and my routes.rb file is set up like this:
Rails.application.routes.draw do
resources :people
resources :teams
resources :organisations
resources :events
end
But whenever I submit the form to create a new person, I get the following error in the console:
POST http://localhost:3000/people/new 404 (Not Found)
Event though the relevant methods exist in my people_controller.rb:
class PeopleController < ApplicationController
def index
#people = Person.all
end
def show
#people = Person.find(params[:id])
end
def new
#people = Person.new
respond_to do |format|
format.html # new.html.erb
format.json { render :json => #people }
end
end
def create
#people = Person.new(params[:person])
respond_to do |format|
if #people.save
format.html { redirect_to(#people,
:notice => 'Person was successfully created.') }
format.json { render :json => #people,
:status => :created, :location => #people }
else
format.html { render :action => "new" }
format.json { render :json => #people.errors,
:status => :unprocessable_entity }
end
end
end
Can anyone suggest what I might be doing wrong?

Answer 1

When you have an underlying model you will want to use <%= form_with model: #people do |person| %>
Reference: http://api.rubyonrails.org/v5.1/classes/ActionView/Helpers/FormHelper.html#method-i-form_with

Answer 2

You are posting to a method which, at least as far as I can tell, is supposed to output an empty form for entering attributes of your person.
Try a GET first, which would be in keeping with the rails interpretation of is REST URLs. Likely, the correct route also has no /new at the end.
Next, try rails routes to list all available routes.
By the way, if in development, rails should give you a meaningful, large help page, likely including available routes. Check your development.rb for some flag to enable that.