bundle exec rails generate migration add_is_top_to_articles

class AddIsTopAritcles < ActiveRecord::Migration
   def change
     add_column :articles, :is_top, :boolean, default: false, comment: '默认不置顶，后期自己选择是否置顶'
   end
end

 <div>
      <%= form.label :'是否置顶' %>
      <%= form.check_box :is_top %>
</div>

def  index

    # 找到指定的 articles, migration, is_top 默认 false, 修改之后是 true

    @top_articles = Article.where('is_top = ?', true).order('created_at desc') 

  # 找到普通的 articles

    @articles = Article.all

end

 

def   create

     @article.is_top = params[:article][:is_top]

end

def  update

     @article.is_top = params[:article][:is_top]

end

 

 def article_params

    params.require(:article).permit(:title, :content, :category_id, :is_top)

end