[SOLVED] How to format date when using pluck in Rails

How to format date when using pluck in Rails

My User model looks like this. User has many attached Resume.

class User < ApplicationRecord
  has_many_attached :resumes, dependent: :destroy
end

Now in different form, I want to show list of resumes upload by user in descending order. I manage to do that by using following code.

<%= f.select :resume, options_for_select(@user.resumes.includes(:blob).references(:blob).pluck(:filename, :created_at).reverse.map{ |e| e.join(' - ') }), prompt: '-- Select --', class: 'form-control' %>

So now in my select drop down I am able to see all the uploaded resume in descending order. My dropdown looks like this file_name.pdf - 2021-11-30 03-59-59 UTC. I don't want to show time in dropdown. I just want to format it and show date with filename, something like this john_resume.pdf 11/11/2021.

So my question is how can I format the date when using pluck ?

Solution

<% options =  @user.resumes.includes(:blob).references(:blob).pluck(:filename, :created_at).reverse.map { |e| filename = e.first; created_at = e.last; [filename, created_at.strftime('%d/%m/%Y')].join(' - ') }%>
<%= f.select :resume, options_for_select(options), prompt: '-- Select --', class: 'form-control' %>