Rails MVC 和 CRUD(9)
保存数据
修改 create 方法，对提交的数据进行保存
[root@h202 blog]# vim app/controllers/articles_controller.rb
[root@h202 blog]# cat app/controllers/articles_controller.rb
class ArticlesController < ApplicationController
def new
end
def create
# render plain: params[:article].inspect
@article = Article.new(params[:article])
@article.save
redirect_to @article
end
end
[root@h202 blog]#再提交一次
rails16.png
我们要明确地告知 Rails 哪些参数可在控制器中使用，否则安全检查通不过
我们再作一下修改
[root@h202 blog]# vim app/controllers/articles_controller.rb
[root@h202 blog]# cat app/controllers/articles_controller.rb
class ArticlesController < ApplicationController
def new
end
def create
# render plain: params[:article].inspect
# @article = Article.new(params[:article])
@article = Article.new(article_params)
@article.save
redirect_to @article
end
private
def article_params
params.require(:article).permit(:title,:text)
end
end
[root@h202 blog]#显示文章
再次提交会产生这样的报错
rails17.png
找不到 show 方法
我们定义一下show方法，并且添加相应模板
[root@h202 blog]# vim app/controllers/articles_controller.rb
[root@h202 blog]# cat app/controllers/articles_controller.rb
class ArticlesController < ApplicationController
def new
end
def create
# render plain: params[:article].inspect
# @article = Article.new(params[:article])
@article = Article.new(article_params)
@article.save
redirect_to @article
end
def show
@article = Article.find(params[:id])
end
private
def article_params
params.require(:article).permit(:title,:text)
end
end
[root@h202 blog]# vim app/views/articles/show.html.erb
[root@h202 blog]# cat app/views/articles/show.html.erb
<p>
<strong>Title:</strong>
<%= @article.title %>
</p>
<p>
<strong>Text:</strong>
<%= @article.text %>
</p>
[root@h202 blog]#本文系转载，前往查看
如有侵权，请联系 cloudcommunity@tencent.com 删除。
本文系转载，前往查看
如有侵权，请联系 cloudcommunity@tencent.com 删除。
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