Subject: Traffic flow
Author: Linux
In response to: Step 6 -- Save data into database
Posted on: 09/13/2017 04:50:40 AM
Type into your browser: http://localhost:3000/blog/new
New Post
Title
[ ]
Text
[ ]
[Save Post]
Typing title and text and clicking on Save Post button should bring:
http://localhost:3000/posts/1
Title: Post #2
Text: This is my second post.
You can also verify the data persistence in database:
administrator@ubuntu:~/blog$ psql -h localhost -p 5432 -U blog_admin blog_development
Password for user blog_admin:
psql (9.6.5, server 9.3.19)
SSL connection (protocol: TLSv1.2, cipher: DHE-RSA-AES256-GCM-SHA384, bits: 256, compression: off)
Type "help" for help.
blog_development=> SELECT * FROM posts;
id | title | text | created_at | updated_at
----+----------+--------+--------------+-------------------
1 | Post#1 | This...| 2017-09-13 04:21:15.40803 | 2017-09-13 04:21:15.40803
2 | Post#2 | This...| 2017-09-13 04:25:12.514606 | 2017-09-13 04:25:12.514606
(2 rows)
>
> On 09/13/2017 04:28:18 AM
Linux wrote:
Back to the controller app/controllers/posts_controller.rb, change the content of action create
class PostsController < ApplicationController
def new
end
def create
@post = Post.new(params[post_params])
@post.save
redirect_to @post
end
def show
@post = Post.find(params[:id])
end
private
def post_params
params.require(:post).permit(:title, :text)
end
end
This is going to do:
Initialize the model Post with params from its respective attributes
@post.save -- Save the model into it corresponding table posts
redirect_to @post -- redirect the view to show
require().permit() -- allow rights
Showing the post
app/views/posts/show.html.erb
<p>
<strong>Title:</strong>
<%= @post.title %>
</p>
<p>
<strong>Text:</strong>
<%= @post.text %>
</p>
References:
