latex_resumes/app/admin/users_admin.rb

Trestle.resource(:users) do
  menu do
    item :resumes, icon: "fa fa-file-alt", priority: 1
  end

  form do |item|
    tab :details, label: "Details" do
      concat Trestle::Form::Automatic.new(admin).render(self, item)
      text_area :objective
    end

    tab :work_experiences, badge: (item.persisted? ? item.work_experiences.size : 0) do
      concat content_tag(:p, "User: #{item.to_s}")
      if item.persisted?
        concat link_to("Add Work Experience", WorkExperiencesAdmin.path(:new, user_id: item.id))

        table item.work_experiences do
          column :employer
          column :title
          column :period
          column :reference_date, align: :center
          column :actions, align: :right do |experience|
            # TODO: The redirect after succesful delete goes back to the index page.. it should go back to the user page
            safe_join([
              link_to("Edit", WorkExperiencesAdmin.path(:edit, id: experience.id), class: "btn btn-secondary has-icon"),
              link_to("Delete", work_experiences_admin_path(experience), class: "btn btn-danger has-icon", method: :delete, data: { confirm: "Are you sure?" })
            ], " | ")
          end
        end
      else
        concat content_tag(:p, "Save the user before adding work experiences.")
      end
    end

    tab :education_entries, badge: (item.persisted? ? item.education_entries.size : 0) do
      concat content_tag(:p, "User: #{item.to_s}")
      if item.persisted?
        concat link_to("Add Education Entry", EducationEntriesAdmin.path(:new, user_id: item.id))

        table item.education_entries do
          column :institution
          column :title
          column :period
          column :location
          column :actions, align: :right do |entry|
            safe_join([
              link_to("Edit", EducationEntriesAdmin.path(:edit, id: entry.id), class: "btn btn-secondary has-icon"),
              link_to("Delete", EducationEntriesAdmin.path(:destroy, id: entry.id), class: "btn btn-danger has-icon", method: :delete, data: { confirm: "Are you sure?" })
            ], " | ")
          end
        end
      else
        concat content_tag(:p, "Save the user before adding education entries.")
      end
    end

    tab :skills, badge: (item.persisted? ? item.skills.size : 0) do
      concat content_tag(:p, "User: #{item.to_s}")
      if item.persisted?
        concat link_to("Add Skill", SkillsAdmin.path(:new, user_id: item.id))

        table item.skills do
          column :title
          column :detail
          column :order, align: :center
          column :actions, align: :right do |skill|
            safe_join([
              link_to("Edit", SkillsAdmin.path(:edit, id: skill.id), class: "btn btn-secondary has-icon"),
              link_to("Delete", SkillsAdmin.path(:destroy, id: skill.id), class: "btn btn-danger has-icon", method: :delete, data: { confirm: "Are you sure?" })
            ], " | ")
          end
        end
      else
        concat content_tag(:p, "Save the user before adding skills.")
      end
    end

    tab :cover_letters, badge: (item.persisted? ? item.cover_letters.size : 0) do
      concat content_tag(:p, "User: #{item.to_s}")
      if item.persisted?
        concat link_to("Add Cover Letter", CoverLettersAdmin.path(:new, user_id: item.id))

        table item.cover_letters do
          column :title
          column :company_name
          column :job_application
          column :order, align: :center
          column :actions, align: :right do |cover_letter|
            safe_join([
              link_to("Edit", CoverLettersAdmin.path(:edit, id: cover_letter.id), class: "btn btn-secondary has-icon"),
              link_to("Delete", CoverLettersAdmin.path(:destroy, id: cover_letter.id), class: "btn btn-danger has-icon", method: :delete, data: { confirm: "Are you sure?" })
            ], " | ")
          end
        end
      else
        concat content_tag(:p, "Save the user before adding cover letters.")
      end
    end
  end

  # Customize the table columns shown on the index view.
  table do
    column :name
    column :label
    column :created_at, align: :center
    actions do |toolbar, instance, admin|
      toolbar.edit if admin && admin.actions.include?(:edit)
      toolbar.delete if admin && admin.actions.include?(:destroy)
      toolbar.link 'CV', instance, action: :generate, method: :get, style: :primary, icon: "fa fa-file-pdf", target: "_blank"
      toolbar.link 'CLS', instance, action: :generate_cls, method: :get, style: :secondary, icon: "fa", target: "_blank"
      toolbar.link 'JSON', instance, action: :generate_json, method: :get, style: :secondary, icon: "fa", target: "_blank"
      toolbar.link 'Clone', instance, action: :clone, method: :post, style: :secondary, icon: "fa fa-copy"
    end
  end

  controller do
    def generate
      tex_content = generate_tex
      destination_dir = "#{Rails.root}/app/views/templates/awesome"
      `cd #{destination_dir} && make clean`
      File.open("#{destination_dir}/resume.tex", "w") do |f|
        f << tex_content
      end
      `cd #{destination_dir} && make resume.pdf`
      render file: "#{destination_dir}/resume.pdf", layout: false
    end

    def generate_cls
      tex_content = generate_tex
      destination_dir = "#{Rails.root}/app/views/templates/awesome"
      File.open("#{destination_dir}/resume.tex", "w") do |f|
        f << tex_content
      end
      render file: "#{destination_dir}/resume.tex", layout: false
    end

    def generate_json
      generate_json_resume
    end

    def generate_json_resume
      @user = admin.find_instance(params)
      render template: "users/show", formats: [:json], layout: false
    end

    def generate_tex(template: "resume")
      user = admin.find_instance(params)
      ac = ActionController::Base.new()
      ac.render_to_string(layout: false, template: "templates/awesome/#{template}", locals: { "@user": user } )
    end

    def clone
      user = admin.find_instance(params)
      cloned_user = user.clone!(label: "cloned")
      flash[:message] = "User cloned as ##{cloned_user.id}."
      redirect_to users_admin_path(cloned_user)
    end
  end

  routes do
    get :generate, on: :member
    get :generate_cls, on: :member
    get :generate_json, on: :member
    post :clone, on: :member
  end
end