soniya.rayabagi
Mon Dec 04 2023
How we can Set up Puma as Systemd service in Ubuntu 18 for Rails application, The main purpose is ,
• to ensure it starts automatically on boot,
• can be managed easily with systemd's service management commands,
• It also allows for better process management, automatic restarts in case of failure, and logging capabilities,
• few set of commands used to create puma.service file and getting it started:
for file creation : /etc/systemd/system/puma.service
sudo systemctl daemon-reload
sudo systemctl enable puma
sudo service puma start
sudo service puma status
nisanth
Thu Nov 30 2023
Retrieving Command History with FZF
Command: To view the command history, we can use the following command:
history | fzf
Note: Ensure that you have FZF installed before. It provides an efficient way to navigate through past commands.
mahrukh.mir
Thu Nov 30 2023
Components:
Components are user interface elements that can be reused throughout the design file. They make design more consistent and allow for more rapid modifications.
Components can be made from a layer
, groups
or frames
.
• Generally, there are two sorts of components:
- Main Component: It is normally built first and is responsible for specifying several UI styles in the UI element.
- Instance Component: This is the single occurrence main component. When the main component is modified. It is automatically applied to the instance component. However, modifications to Instance components must be made manually.
The changes we make to the instance component are referred to as override
. When we override an instance component and afterwards make modifications to the main component, the override does not change.
ayushsrivastava
Thu Nov 30 2023
Lambda
A lambda is a way to define a block & its parameters with some special syntax.
You can save this lambda into a variable for later use.
The syntax for defining a Ruby lambda looks like this:
say_something = -> { puts "This is a lambda" }
ayushsrivastava
Thu Nov 30 2023
Scopes
Scopes are custom queries that you define inside your Rails models with the scope
method.
Every scope takes two arguments:
- A name, which you use to call this scope in your code.
- A lambda, which implements the query. It looks like this:
scope :with_juice, -> { where("juice > 0") }
end```
satya
Thu Nov 30 2023
RSpec double
is a method provided by the RSpec library for creating test doubles, also known as mocks. Test doubles are objects that stand in for real objects in your system during tests.
satya
Wed Nov 29 2023
if we are using tailwindcss-rails
gem we don't need cssbundling-rails
gem because tailwindcss-rails
gem is a standalone version of Tailwind CSS that integrates with rails asset pipeline. It's a simpler and more direct alternative for rails applications because it doesn't require Node.js at all.
ayushsrivastava
Wed Nov 29 2023
.abs
method in Ruby is used to return the absolute value of a number. The absolute value of a number is its distance from zero, regardless of direction. In other words, it's the number without its sign.
Here's an example:
puts num.abs # Outputs: 10```
In this example, `num.abs` returns `10` because the absolute value of `-10` is `10`.
Similarly, for a positive number:
```num = 10
puts num.abs # Outputs: 10```
syedsibtain
Tue Nov 28 2023
How to drop DB and add new database dump in Mongo db.
- Open terminal and enter
mongo
- Enter
show dbs
to list all the databases - Enter
use <dbname>
and select the database. - Enter
db
and this will show the selected database (optional) - Enter
db.dropDatabase()
and it will drop the database and show the following response{ "dropped" : "<dbname>", "ok" : 1 }
To add a new data dump, use the below command.
mongorestore --db <dbname> <path>
mahrukh.mir
Mon Nov 27 2023
Gestalt Principles: It explains how humans perceive visual aspects and how the human brain creates order from chaos. The human brain organizes and simplifies complicated visuals composed of numerous components into a single entire system. Humans will look for patterns and structure to create an image rather than seeing distinct, separate components.
Some Gestalt Principles are as follows:
1. Similarity: when two elements appear to be similar, we group them together. We also prefer to believe they serve the same purpose. Elements with similar shapes, sizes, color's, or orientations are believed to be related.
2. Proximity: The elements that are close together appear to be more linked than things that are farther apart.
3. Closure: When there are gaps or missing portions, our brain fills in the gaps to perceive a full shape or entity.
4. Focal point: Visual elements that stand out will catch and hold the viewer's attention right away.
5. Invariance: People can distinguish objects regardless of their shape, rotation, or scale.
6. Continuity: Elements placed on a line or curve appear to be more connected than elements not arranged on a line or curve.
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