Add user without signup form in rails - ruby-on-rails

Question

I have a users signup form and once a users signs up he is redirected to users details forms.
user signup form.
<%= form_for(#user, :html => { multipart: true, class: "form-horizontal", role: "form"}) do |f| %>
<%= f.label :email, class: "required" %>
<%= f.email_field :email, required: true %>
<%= f.label :password, class: "required" %>
<%= f.password_field :password, required: true %>
<%= f.label :password_confirmation, class: "required" %>
<%= f.password_field :password_confirmation, required: true %>
<%= f.submit 'Sign up' %>
<% end %>
user details forms
<%= form_for(#user, :html => { multipart: true, class: "form-horizontal", role: "form"}) do |f| %>
<%= f.label :user_firstname, "First Name", class: "required" %>
<%= f.text_field :user_firstname, required: true %>
<%= f.label :user_lastname, "Last Name", class: "required" %>
<%= f.text_field :user_lastname, required: true %>
<%= f.submit 'Save' %>
<% end %>
I want to add a feature so that admin can add a users who doesn't have a email and admin just adds a details in users details form and submits and user is created.
What I have done is, I have added a route and added a method in user controller and this is the error I am getting There was an error adding family. Try again . Please help me fix this
Routes
get 'adduser', to:'users#adduser'
post 'adduser', to:'users#create_user'
User controller
def adduser
#user=User.new
end
def create_user
#user=User.new(user_params)
if #user.save
flash[:success] = "User successfully added" redirect_to main_admin_path
else
flash[:danger] = "There was an error adding user. Try again" redirect_to main_admin_path
end
end
<%= form_for(#user, url: adduser_path, :html => { multipart: true, class: "form-horizontal", role: "form"}) do |f| %>
<%= f.label :user_firstname, "First Name", class: "required" %>
<%= f.text_field :user_firstname, required: true %>
<%= f.label :user_lastname, "Last Name", class: "required" %>
<%= f.text_field :user_lastname, required: true %>
<%= f.submit 'Save' %>
<% end %>
Validations
attr_accessor :remember_token, :activation_token, :reset_token
before_create :confirmation_token
has_secure_password
validates :email, presence: true, uniqueness: {case_sensitive: false}, format: { with: VALID_EMAIL_REGEX }
validates_attachment :document
validates_confirmation_of :password

Answer 1

At first, you need to create a migration and add a new column to the users table. I think it is better to keep info about admin creating in the db (if you don't want to store it, just add :created_by_admin to attr_accessor list instead of this step).
add_column :users, :created_by_admin, :boolean, default: false, null: false
Add this new field to the form ('added by admin'):
<%= f.hidden_field :created_by_admin, value: true %>
Add condition to email validation:
validates :email, presence: true, uniqueness: { case_sensitive: false },
format: { with: VALID_EMAIL_REGEX }, unless: :created_by_admin?

Answer 2

Use an attr_accessor in your model, if you don't want any changes to your existing schema.
models/user.rb
class User
attr_accessor :with_email_optional
# Run these validations only if `self.with_email_optional` is not set OR set to `false`
validates :email,
presence: true,
uniqueness: { case_sensitive: false },
format: { with: VALID_EMAIL_REGEX },
unless: :with_email_optional
end
And in your users controller for admin (i don't know what that is called in your application):
def new
#user = User.new
#user.with_email_optional = true
end
private
# To be used in `create` action
def user_params
params.require(:user).permit(..., :with_email_optional)
end
Form
<%= form_for(#user) do |f|
<%= f.hidden_field :with_email_optional, value: f.object.with_email_optional %>
<% end %>