Rails Undefined Method in an unknown way

Question

I cloned a project that runs just fine. I did the bundle install, bundle update, db:create, db:migrate, and whatnot.

Now when I run http://localhost:3000/orders/new it returns a NoMethodError in Admin::Orders#new

I have this as part of my code under model/admin/area.rb

has_many :admin_accounts, :class_name => 'Admin::Account'

validates :name, :presence => true
validates :timezone, :presence => true
validates :time_offset, :presence => true
validates :shift_time1, :presence => true
validates :shift_time2, :presence => true
validates :unit_price_12, :presence => true
validates :unit_price_24, :presence => true

def next_shift_time_from_now
  current_time = Time.zone.now
  next_shift_time(current_time)
end

def next_shift_time(time)
  shift1 = time.change(hour: self[:shift_time1].hour)
  shift2 = time.change(hour: self[:shift_time2].hour)
  get_shift(time, shift1, shift2)
end

And this under my accounts.rb

require 'digest/md5'
before_save :encrypt_password
after_initialize :default_values

has_many :admin_orders, :class_name => 'Admin::Order'
belongs_to :admin_areas, :class_name => 'Admin::Area', :foreign_key => 'area_id'

under new.html

<div class="page-header clearfix">
  <div class="pull-right"><%= link_to 'Back', orders_path, class: "btn btn-primary btn-sm" %></div>
  <h3 class="pull-left">
    Creating New Order
  </h3>
</div>

<%= render 'form' %>

and this under _form.html.erb which has the error

    <div class="form-group field-bottom-container">
      <label id="nextShiftTime">Next Shift Time</label>

      <div>
        <% @user = Admin::Account.find($user_id) %>
        <%= @nextShiftTime=format_datetime(@user.admin_areas.next_shift_time_from_now) %>
      </div>
    </div>

The error is this line: <%= @nextShiftTime=format_datetime(@user.admin_areas.next_shift_time_from_now) %>

which returns... undefined method `next_shift_time_from_now' for nil:NilClass

Is there anything I must configure to fix this? I think there's nothing wrong with the code since it worked well previously and upon recent clone, with no changes with the codes i might add, the program is causing this error.

Since @user.admin_areas is nil, can you post the user model? — user2536065
– user2536065, Commented May 6, 2015 at 6:50
i have no user model. the models used are account and area. the admin_areas belongs to area.rb as well as the def next_shift_time_from_now @jphager2 the 'at' user gets the account model by the way — MAC
– MAC, Commented May 6, 2015 at 6:57
Ok got it. So first thing: belongs_to :admin_areas is plural. Is that intentional? Because you are only expecting one admin_area. Secondly, did you assign an area_id to the account in the database? I'm guessing @user.area_id == nil — user2536065
– user2536065, Commented May 6, 2015 at 7:03
The line <% @user = Admin::Account.find($user_id) %> violates at least three Rails' best practice pattern. — spickermann
– spickermann, Commented May 6, 2015 at 7:03
@jphager2 i just found out that area_id turned null in my database. thanks a lot!! that solved my problem — MAC
– MAC, Commented May 6, 2015 at 7:21

spickermann · Accepted Answer · 2015-05-06 07:06:15Z

1

If the line

@nextShiftTime=format_datetime(@user.admin_areas.next_shift_time_from_now)

returns an undefined method 'next_shift_time_from_now' for nil:NilClass error, then the only possible explanation is that @user.admin_areas returns nil.

Look into your database: You have at least one Admin::Account without a matching Admin::Area.

edited May 6, 2015 at 7:06

answered May 6, 2015 at 6:53

spickermann

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2 Comments

MAC Over a year ago

what data should I add? the other clone of this same project went well with same codes... don't the versions of ruby/rails matter or what?

MAC Over a year ago

thanks... it helped me trace the problem. i just found out that my area_id is null in my database

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