Edit other users devise ruby on rails error undefined local variable or method resource_name

Question

Im setting up a Landlord Management System and trying to manage other users. I currently have admin as a boolean attribute in my users model, so i would like to edit other users and make them admin via the edit form.

I am trying to do this via influence from this post Edit other user as admin in devise, ruby on rails

So Here is my code:

Routes.rb

devise_for :users, :path_prefix => 'my'
resources :users

views\users\edit

<h2>Edit <%= resource_name.to_s.humanize %></h2>

<%= form_for(@user) do |f| %>
<%= f.error_notification %>

<div class="form-inputs">
<%= f.input :email, required: true, autofocus: true %>

<% if devise_mapping.confirmable? && resource.pending_reconfirmation? %>
  <p>Currently waiting confirmation for: <%= resource.unconfirmed_email %> 
</p>
<% end %>

<%= f.input :password,
            hint: "leave it blank if you don't want to change it",
            required: false,
            input_html: { autocomplete: "new-password" } %>
<%= f.input :password_confirmation,
            required: false,
            input_html: { autocomplete: "new-password" } %>
<%= f.input :admin,
            required: false %>
<%= f.input :current_password,
            hint: "we need your current password to confirm your changes",
            required: true,
            input_html: { autocomplete: "current-password" } %>
</div>

<div class="form-actions">
<%= f.button :submit, "Update" %>
</div>
<% end %>

<h3>Cancel my account</h3>

<p>Unhappy? <%= link_to "Cancel my account", 
registration_path(resource_name), data: { confirm: "Are you sure?" }, 
method: :delete %></p>

controllers\users

class UsersController < ApplicationController

def edit
@user = User.find(params[:id])
end


def update
@user = User.find(params[:id])
if @user.update(user_params)
redirect_to adminpanel_path
else
render 'edit'
end
end

end

Issue

if i go to http://localhost:3000/users/2/edit to edit a user i get the following error undefined local variable or method resource_name for #<#<Class:0x8b9df40>:0x8ba7360>

please see answer in the following question https://stackoverflow.com/questions/35583473/edit-other-user-as-admin-in-devise-ruby-on-rail, this is what i was trying to implement — Kush, Feb 11 '19 at 21:05
It looks like the `views\users\edit` code you show is the Devise code. Is that correct? If so, you seem to be mixing up the devise code and the users code you need. — hashrocket, Feb 11 '19 at 21:11
hi @hashrocket yes that is correct that is what it said on previous post mentioned in question. https://stackoverflow.com/questions/35583473/edit-other-user-as-admin-in-devise-ruby-on-rail, but i did change line 3. — Kush, Feb 11 '19 at 21:15

score 0 · Accepted Answer · answered Feb 11 '19 at 21:57

undefined local variable or method resource_name for #<#<Class:0x8b9df40>:0x8ba7360>

tells you that resource_name is undefined. Remove all resource references from your form and it will work. As for your cancel account link:

<%= link_to "Cancel my account", 
registration_path(resource_name), data: { confirm: "Are you sure?" }, 
method: :delete %></p>

you need to change resource_name to the user id you want to delete.

I've also seen you are using custom attributes for devise:

<%= f.input :admin,
            required: false %>

have you permitted them? Otherwise, this will be your next error. If you don't know how to do that, comment quickly and i'll update my answer.

Greetings!

Edit other users devise ruby on rails error undefined local variable or method resource_name

1 Answers1