安装 gems

gem install sequel -NV 
gem install ramaze -NV 
gem install maruku -NV

初始化建表 db.rb

require "sequel"

DB = Sequel.sqlite("myblog.db")

DB.create_table(:blog) do
    primary_key :id
    String :title
    Text :content
    DateTime :ctime
end

写业务代码 app.rb

require 'ramaze'
require "sequel"
require 'maruku'

DB = Sequel.sqlite("myblog.db")

class BlogController < Ramaze::Controller
  engine :haml
  map "/blog"

  def new
     render_view :new
  end

end

Ramaze.start

启动

ruby app.rb

建模板目录

md view/blog

发表博客的页面

view/blog/new.haml

!!!
%html
  %head
    %meta{charset: "utf-8"}
    %link{href: "https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css",rel: "stylesheet"}
  %body
    .container
      .row
        .col-md-12
          %form{action: "save", method: "post"}
            .form-group
              %label{for: "title"} title
              %input#t.form-control{name: "title", placeholder: "title", type: "text"}
            .form-group
              %label{for: "content"} content
              %textarea#c.form-control{name: "content", rows: "12"}
                :preserve
                  ## markdown ##
                  - rails
                  - sinatra

                  [ goto ](https://www.ruby-china.org)
            %button.btn.btn-primary{type: "submit"} Submit

app.rb 中增加写博客保存到数据库和查询博客

def save
  request.params[:ctime]=Time.now
  DB[:blog].insert request.params
  redirect "/blog"
end

def index
  @records = DB[:blog].all
  render_view :index
end

列出所有的博客的页面

view/blog/index.haml

!!!
%html
  %head
    %meta{charset: "utf-8"}
    %link{href: "https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css",rel: "stylesheet"}
  %body
    .container
      %a{href: "blog/new"} New
      %hr
      .row
        .col-md-12
          - @records.each do |record|
            %br
            .card{style: "padding:1rem"}
              .card-header
                %h1= record[:title]
              %i.text-right
                published at: #{record[:ctime]}
              .card-body
                %p
                  = Maruku.new(record[:content]).to_html

访问 http://localhost:7000/blog

一个自用 blog 基本完成

看看表，不到 5 分钟，比拍黄片快多了