NameError in Roles#new , undefined local variable or method `permissions' - ruby-on-rails

Question

i'm doing role and permission. I want to add a permission checkbox to role create page, so when admin create role can tick the permission checkbox then store at role_permission.
I want the checkbox can connect with the permission_id because when i create one permission it will also show at the role create page.
Now i want to show the checkbox at the role create page but it give me some error.
role controller
def new
#role = Role.new
#role.company_id = params[:company_id]
#permission = Permission.all
end
def create
#role = Role.new(role_params)
#company_id = Company.find(params[:role][:company_id])
#permission_id = Permission.all
if #role.save
flash[:success] = "Succesful create!"
redirect_to #role
else
render 'new'
end
end
private
def role_params
params.require(:role).permit(:name, :company_id)
end
new.html.erb
<% provide(:title, "Create Roles") %>
<h1>Create Role</h1>
<div class="row">
<div class="col-md-6 col-md-offset-3">
<%= form_with(model: #role, local: true) do |f| %>
<%= permissions.each do |permission|%>
<%= render 'shared/error_messages', object: f.object %>
<%= f.label :name %>
<%= f.text_field :name, class: 'form-control' %>
<%= f.label :permission_id %>
<%= f.check_box_tag 'permission_ids[]', permission.id, false%>
<%= f.hidden_field :company_id , value: 2%>
<%= f.submit "Create Role", class: "btn btn-primary" %>
<% end %>
<% end %>
</div>
error show in website
error show in console
Update
error show after update

Answer 1

In a controller, the variable name should be plural as its array/multiple records.
def new
...
...
#permissions = Permission.all
end
And in a view we can use the same as below:
<%= #permissions.each do |permission|%>
<%= render 'shared/error_messages', object: f.object %>
Checkbox seems ok, but if you want to dig more, then can have a look at here: https://apidock.com/rails/v6.0.0/ActionView/Helpers/FormTagHelper/check_box_tag