ruby - Rails 5.2 flash.now not working with redirect_to

Question

I have read Rails 5 flash message not working with redirect_to but it is not concluding any solution after 2 years and 4 months and other topic related entries doesn't solve my problem so I'm posting this new question, I hope someone helps me solve the situation because it is quite frustrating not knowing what is wrong. So, I have an app that logs licence periods (time off) for college members, my problem is that after a failed custom validation my form is not flashing the error message thus not letting the user know what was wrong with his previous attempt to save a new licence period. The route I have defined for logging licence periods is:

resources :licencias, except: :new
  get 'members/:member_id/licenciar' => 'licencias#new', as: :licenciar

So the licencias controller new action is called from the member#show partial with a link_to like this:

<%= link_to 'Agregar Licencias', licenciar_path(@member), class: "btn btn-in-table" %>

The licencias controller 'new' and 'create' actions are:

  def new
    @member = Member.find_by(id: params[:member_id])
    @licencia = @member.licencias.new
  end

  def create
    @member = Member.find_by(id: params[:licencia][:member_id])
  
    @licencia = @member.licencias.build(licencia_params)

    if @licencia.save
      flash[:success] = "Se ha registrado exitosamente la Licencia."
      redirect_to members_path
    else
      puts "******* @member.id: #{@member.id}"
      puts "####### errors: #{@licencia.errors[:base]}"
      flash.now[:danger] = @licencia.errors[:base]
      redirect_to licenciar_url(@member)
    end
  end

Those 'puts' (old fashined debugging sorry) show this in Rails server logging

Started GET "/members/5/licenciar" for 127.0.0.1 at 2021-01-19 14:13:37 -0600
Processing by LicenciasController#new as HTML
  Parameters: {"member_id"=>"5"}
  Member Load (0.3ms)  SELECT  "members".* FROM "members" WHERE "members"."id" = ? ORDER BY "members"."numero" ASC LIMIT ?  [["id", 5], ["LIMIT", 1]]
  ? app/controllers/licencias_controller.rb:11
  Rendering licencias/new.html.erb within layouts/application
  Rendered shared/_error_messages.html.erb (0.9ms)
  Rendered licencias/_form.html.erb (6.7ms)
  Rendered licencias/new.html.erb within layouts/application (11.3ms)
  Rendered layouts/_shim.html.erb (0.8ms)
  User Load (0.3ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = ? LIMIT ?  [["id", 1], ["LIMIT", 1]]
  ? app/helpers/sessions_helper.rb:10
  Rendered layouts/_header.html.erb (6.4ms)
  Rendered layouts/_footer.html.erb (1.5ms)
Completed 200 OK in 150ms (Views: 134.8ms | ActiveRecord: 0.7ms)


Started POST "/licencias" for 127.0.0.1 at 2021-01-19 14:13:55 -0600
Processing by LicenciasController#create as HTML
  Parameters: {"utf8"=>"?", "authenticity_token"=>"ID18U67DeymDkwQ9FAfJiIgMKpdcZpmfjwU7FsFPH2mb6nOToIj+NGrHHg9M3/evN2UHrS0GHZjRCzDpZTkSJw==", "licencia"=>{"inicio"=>"2021-01-06", "final"=>"2021-01-10", "member_id"=>"5"}, "commit"=>"Guardar"}
  Member Load (0.3ms)  SELECT  "members".* FROM "members" WHERE "members"."id" = ? ORDER BY "members"."numero" ASC LIMIT ?  [["id", 5], ["LIMIT", 1]]
  ? app/controllers/licencias_controller.rb:17
   (0.2ms)  begin transaction
  ? app/controllers/licencias_controller.rb:22
  Member Load (0.3ms)  SELECT  "members".* FROM "members" WHERE "members"."id" = ? ORDER BY "members"."numero" ASC LIMIT ?  [["id", 5], ["LIMIT", 1]]
  ? app/models/validators/lapse_validator.rb:22
  Licencia Exists (0.2ms)  SELECT  1 AS one FROM "licencias" WHERE "licencias"."member_id" = ? LIMIT ?  [["member_id", 5], ["LIMIT", 1]]
  ? app/models/validators/lapse_validator.rb:23
  Licencia Load (0.3ms)  SELECT "licencias".* FROM "licencias" WHERE "licencias"."member_id" = ? ORDER BY inicio ASC  [["member_id", 5]]
  ? app/models/validators/lapse_validator.rb:24
   (0.2ms)  rollback transaction
  ? app/controllers/licencias_controller.rb:22
**
======= @member.id: 5
####### errors: ["El rango registrado se superpone con alguno de los períodos de licencia ya registrados. Verifique y corrija por favor."]
**
Redirected to http://localhost:3000/members/5/licenciar
Completed 302 Found in 37ms (ActiveRecord: 1.6ms)

This is the custom validation code:

class Validators::LapseValidator < ActiveModel::Validator

  def validate(record)
    licencias_activas = get_licences_array(record.member_id)

    if licencias_activas.any?
      lapse = { :inicio => record.inicio, :final => record.final }
    
      error_found = lapse_validation(lapse, licencias_activas)
    
      record.errors[:base] << "El rango registrado se superpone con alguno de los períodos de licencia ya registrados. Verifique y corrija por favor." unless error_found == 0

    end
            
  end
  
  private
  
    def get_licences_array(miembro)
      arreglo = []
      notario = Member.find(miembro)
      if notario.licencias.any?
        notario.licencias.each do|licencia|
          arreglo << { :inicio => licencia.inicio, :final => licencia.final }
        end
        
      end
      return arreglo
    end
  
    def lapse_validation(lapse, licencias)
      found_error = 0
      licencias.each do |span|
        unless (lapse[:final] < span[:inicio] || lapse[:inicio] > span[:final])
          found_error = 1
          break
        end
      end
      return found_error
    end
end

This is the licencias model definition:

class Licencia < ApplicationRecord
  belongs_to :member
  validate :date_ordinality
  validates_with Validators::LapseValidator
  default_scope { order('inicio ASC') }

  def date_ordinality
    errors.add(:final, ": La fecha de inicio del período de Licencia no puede ser posterior a la fecha de término del período. Verifique por favor.") unless inicio < final
  end
end

This is the licencias schema:

create_table "licencias", force: :cascade do |t|
    t.date "inicio"
    t.date "final"
    t.integer "secuencia"
    t.integer "member_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.index ["member_id"], name: "index_licencias_on_member_id"
  end

This is the app/views/licencias/new.html.erb

<h2>Período de Licencia</h2>
<% flash.each do |message_type, message| %>
    <div class="alert alert-<%= message_type %>"><%= message %></div>
   <% end %>
<h3>Agregar Licencias de Notario: <%= @member.nombre%></h3>
<div class="container">

  <%= render 'form', member: @member %>
</div>
<%= debug(flash) if Rails.env.development? %>

This is the form partial

<%= form_for(@licencia) do |f| %>
  <%= render 'shared/error_messages', object: f.object %>
  <% flash.each do |message_type, message| %>
    <div class="alert alert-<%= message_type %>"><%= message %></div>
   <% end %>
  <div class="col-sm-5">
  </div>
  <div class="col-sm-2">
    <hr>
    <%= f.label :inicio, "Fecha de Inicio", class: "form-control-label" %>
    <%= f.date_field :inicio, class: "form-control form-fecha" %>
    <%= f.label :final, "Fecha de término", class: "form-control-label" %>
    <%= f.date_field :final, class: "form-control form-fecha" %>
    <%= f.hidden_field :member_id, :value => params[:member_id] %>
    <div class="actions">
      <%= f.submit "Guardar", class: "btn btn-default" %>
    </div>
  </div>
<% end %>

Please excuse me for not using a github gist for all the code. Thanks in advance

Answer 1

等待大神解答