How to call worker role permission through role_permission - ruby-on-rails

Question

I'm doing a role permission edit function. It didn't have error but the logic of the code have some problem.
It didn't update the permission but update whole role_permission so it came out like image 1 & 2, it keep update many times.
I need to get the worker role_permission then check if that the permission already have?, if have then no need to add, if no then need to add(update). How can i check it at role controller update there?
Role controller
def edit
#role = Role.find(params[:id])
#role.company_id = params[:company_id]
#permissions = Permission.all
end
def update
#role = Role.find(params[:id])
#company_id = Company.find(params[:role][:company_id])
if #role.update!(role_params)
permission_ids = params[:permission_ids]
permission_ids.each do |permission_id|
RolePermission.update(role_id: #role.id, permission_id: permission_id)
end
flash[:success] = "Profile updated"
redirect_to #role
else
render 'edit'
end
end
Edit.html.erb
<% provide(:title, "Edit Roles") %>
<h1 class="dashboard">Update Role</h1>
<div class="row">
<div class="col-md-6 col-md-offset-3">
<%= form_with(model: #role, local: true) do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<%= f.label :name %>
<%= f.text_field :name, class: 'form-control' %>
<%= #permissions.each do |permission|%>
<%= check_box_tag 'permission_ids[]', permission.id%>
<%= f.label :permission_name, permission.name %>
<% end %>
<%= f.hidden_field :company_id , value: 2%>
<%= f.submit "Save changes", class: "btn btn-secondary bottom" %>
<% end %>
</div>
</div>
RolePermission migration table
create_table "role_permissions", force: :cascade do |t|
t.integer "role_id"
t.integer "permission_id"
t.integer "company_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
parameter pass in console
parameter pass in console
Update
roles controller (role_params)
def role_params
params.require(:role).permit(:name, :company_id)
end
console logs when update role
console log
console log

Answer 1

Hi since you want Update/Add permissions related to roles.
can do it with the help of first_or_initialize:
def update
#role = Role.find(params[:id])
#company_id = Company.find(params[:role][:company_id])
if #role.update!(role_params)
permission_ids = params[:permission_ids]
permission_ids.each do |permission_id|
role_permissions = #role.role_permissions.where(permission_id: permission_id).first_or_initialize
role_permissions.save
end
flash[:success] = "Profile updated"
redirect_to #role
else
render 'edit'
end
end
Read more about first_or_initialize
OR
you should have the following associations with the below models:
# role.rb
has_many :role_permissions, dependent: :destroy
has_many :permissions, through: :role_permissions, source: :permission
# role_permission.rb
belongs_to :role
belongs_to :permission
Then in your roles_controller.rb should have below:
def update
#role = Role.find(params[:id])
#company_id = Company.find(params[:role][:company_id])
if #role.update!(role_params)
flash[:success] = "Profile updated"
redirect_to #role
else
render 'edit'
end
end
def role_params
params.require(:role).permit(:name, :company_id, permission_ids: [])
end