TILs - Fueling Curiosity, One Insight at a Time

How we can change the default Sqlite database to Postgresql database in Ruby on Rails ,
• Make sure homebrew is installed .
• Install Postgresql , brew install postgresql
• Start the postgresql , brew services start postgresql
• Make changes to postgresql database in the database.yml file
• Add rails db:seed to ensure your data gets reset and is visible on the browser .

The underscore ( _ ) in Rails ,
simply gives you the return value of the last evaluation made in the console.
irb(main):015> movie.title
=> "Avengers: Endgame"
irb(main):016> _
=> "Avengers: Endgame"

AWS (KMS ) Key Managament Service

We are using Key Management Service to encrypt sensitive data stored in an S3 bucket, you can use KMS to create a key, and then configure the S3 bucket to use that key for encryption. This way, only authorized users with the right permissions can access and decrypt the data.

AWS (KMS ) Key Managament Service

We are using Key Management Service to encrypt sensitive data stored in an S3 bucket, you can use KMS to create a key, and then configure the S3 bucket to use that key for encryption. This way, only authorized users with the right permissions can access and decrypt the data.

ParameterMissing we can resolve error , param is missing or the value is empty this indicates that we should give the proper name value to params which is same assign to our model .

Routes - Linking Pages where we can ,
• Link to Index Page: Use the link_to helper in the view to create a link that navigates to the index page, displaying a list of items.
• Link Index Page to Show Page: Utilize the link_to helper in the index page to link each item to its respective show page, allowing users to view detailed information about each item.
• Add a Root Route: To replace the default Rails welcome page , with usually the page that shows a list of items or the index page by defining a root route in the routes file.

To add the image or logo which are inside app/assets/images we need not to copy the path , we can just copy the name of an image 'logo.png' and put inside the image_tag <%= image_tag("logo.png") %> when you run the server the logo will be visible on the browser .

models generating a model and migration , running a migration, CRUD records in the database different ways.
Connecting MVC the goal is to show information that's in the database.

models generating a model and migration , running a migration, CRUD records in the database different ways.

Critical Rendering Path

In each HTTP request that browser makes for an HTML page, the server returns the data into bytes, these bytes are then converted to Characters, Tokens, Nodes, and finally DOM (Document Object Model).

Once the DOM is generated, the parsing of the page starts, the HTML contains CSS code or links, JavaScript code or links, media elements such as images, etc, each of them is then parsed separately and plugged together to create a render tree, which is then converted to the layout and then is painted on the screen at the refresh rate of 60 frames per second.

This complete process is called a critical rendering path. Optimizing the critical rendering path helps to load the web page faster and without glitches or janks.