Update many_to_many association in nested form

I have three models for the context of this question. And using the wicked gem for multi-step signup.

wicked

class User < ApplicationRecord
has_one :profile
has_many :specialties, through: :profile

accepts_nested_attributes_for :profile, allow_destroy: true
end


class Profile < ApplicationRecord
belongs_to :user
has_many :profile_specialties
has_many :specialties, through: :profile_specialties
end


class Specialty < ApplicationRecord
has_many :profile_specialties
has_many :profiles, through: :profile_specialties
end


In my form, I pass specialty_ids

specialty_ids

<%= simple_form_for @user, url: wizard_path do |f| %>

...

<%= simple_fields_for :profile_attributes do |cf| %>

<%= cf.input :specialty_ids, collection: Role.order(:name), as: :grouped_select, group_method: :specialties, input_html: multiple: true %>

<% end %>

...

<% end %>


to the AfterSignup#update

AfterSignup#update

def update
@user = current_user
@user.update_attributes(user_params)
render_wizard @user
end


I believed that rails handled the update of associations through naming. But maybe I'm mistaken and need to explicitly update the associations in the controller. Or perhaps I've not named items correctly...

Either way, I'm a little unclear on why the profile specialties don't update.

When I try to do a update, the console logs Unpermitted parameters: :specialty_ids

Unpermitted parameters: :specialty_ids

I have strong params defined as such

def user_params
params.permit profile_attributes: [..., :specialty_ids]
end


Here is the full log

Processing by AfterSignupController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"...", "profile_attributes"=>"specialty_ids"=>["", "22"], "commit"=>"Save and Continue", "id"=>"step_one"
User Load (0.7ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2 [["id", 52], ["LIMIT", 1]]
Unpermitted parameters: :specialty_ids
Unpermitted parameters: :utf8, :_method, :authenticity_token, :commit, :id
(0.2ms) BEGIN
Profile Load (0.2ms) SELECT "profiles".* FROM "profiles" WHERE "profiles"."user_id" = $1 LIMIT $2 [["user_id", 52], ["LIMIT", 1]]
SQL (0.4ms) DELETE FROM "profiles" WHERE "profiles"."id" = $1 [["id", 110]]
SQL (0.4ms) INSERT INTO "profiles" ("user_id", "created_at", "updated_at") VALUES ($1, $2, $3) RETURNING "id" [["user_id", 52], ["created_at", "2018-09-06 02:30:57.882173"], ["updated_at", "2018-09-06 02:30:57.882173"]]
(0.5ms) COMMIT
(0.2ms) BEGIN
(0.2ms) COMMIT
Redirected to http://localhost:3000/after_signup/requirements


params[:speciality_ids]

params.permit profile_attributes: [..., specialty_ids: ]

1 Answer
1

Your strong params is expecting an array so you need:

def user_params
params.permit profile_attributes: [..., specialty_ids: ]
end


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