CODEWITHSUNDEEP
ruby-on-railscontrollerparameters
Sasha
Sasha

Reputation: 3281

retrieve :id attribute in controller after saving into db, rails

hello i was wondering if it was possible to retrieve the :id (the primary key that auto-increments in the db) after it gets saved? i have in my favorite_relationships controller

def create
    @lesson = Lesson.find(params[:favorite_relationship][:lesson_id])
    current_user.favorite!(@lesson)
    #params[:id] = ...
    respond_to do |format|
      format.html { redirect_to @lesson }
      format.js
    end
end

when current_user.favorite! gets called, it goes to my user model

  def favorite!(lesson)
    favorite_relationships.create!(lesson_id: lesson.id)
  end

however, is there a way to retrieve the :id the favorite_relationship is getting saved as? i wanted to set it in the commented out line

#params[:id] =

i need to specify a params[:id] for a gem im using

thanks

Upvotes: 0

Views: 696

Answers (2)

coderek
coderek

Reputation: 1870

copy from railsforum

say your table name is table_A

@a = table_A.new()
@a.first = "firs name"
@a.last = "last name"
@a.save

To GET LAST INSERT ID OF table_A just use @a.id

@a.id will return the last insurted id of table_A

Upvotes: 1

Yuriy Goldshtrakh
Yuriy Goldshtrakh

Reputation: 2014

I assume you are looking for favorite_relationships.id? in this case modify you controller to strore the value in the variable as

favorite_relationships = current_user.favorite!(@lesson)
params[:id]= favorite_relationships.id

Upvotes: 1

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