active_record_migrations | ActiveRecord Stand-alone Migrations | Data Migration library

by rosenfeld Ruby Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | active_record_migrations Summary

active_record_migrations is a Ruby library typically used in Migration, Data Migration, Ruby On Rails applications. active_record_migrations has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

ActiveRecord Stand-alone Migrations (for non-Rails projects)

Support

Quality

Security

License

Reuse

Support

active_record_migrations has a low active ecosystem.

It has 104 star(s) with 16 fork(s). There are 4 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 14 have been closed. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of active_record_migrations is current.

Quality

active_record_migrations has 0 bugs and 0 code smells.

Security

active_record_migrations has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

active_record_migrations code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

active_record_migrations is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

active_record_migrations releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

active_record_migrations saves you 26 person hours of effort in developing the same functionality from scratch.

It has 73 lines of code, 7 functions and 4 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of active_record_migrations

Get all kandi verified functions for this library.

active_record_migrations Key Features

No Key Features are available at this moment for active_record_migrations.

active_record_migrations Examples and Code Snippets

No Code Snippets are available at this moment for active_record_migrations.

Community Discussions

Trending Discussions on active_record_migrations

Rails migrations: What are the advantages of "up" and "down" versus "change"?

QUESTION

Rails migrations: What are the advantages of "up" and "down" versus "change"?

Asked 2020-Aug-27 at 13:22

I am reading https://edgeguides.rubyonrails.org/active_record_migrations.html and ask myself what the advantages of having an "up" and a "down" method in a migration file over doing a migration via a "change" method.

I could imagine that that way via a "down" method arbitrary migrations become rollback'able. On the other hand, there may still be other migrations that depend on the migration which aren't handled even if you have a "down" method.

So is it correct, that having "up" and "down" methods instead of a "change" method does NOT enable you to rollback arbitrary migration files ?

Second: The rails guide speaks of

...

ANSWER

Answered 2020-Aug-27 at 13:22

As I understand this, change method knows how to reverse itself automatically. Up does not so you have to specify reverse functionality by yourself in down method.

Automatical reversing comes with downsides as it does not know how to reverse all the available migration calls. Source for this and full list of auto reverse methods is available in the official docs here.

To more clearly answer your question - advatage of "up" and "down" over "change" is being able to have fine control over the way migration gets executed and reverted. Bare in mind this does not mean you can't do all your migrations with up/down or that it's deprecated but you lose out on the conveniece provided by "change". For summary:

Change - For majority of migrations
Change + reversible - For some complexity not supported by "change" method"
up/down - For fine control. Very nieche, custom or complex migrations.

Source https://stackoverflow.com/questions/63615226

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install active_record_migrations

Add this line to your application's Gemfile (run bundle init if you don't have one):.

Support

Fork itCreate your feature branch (git checkout -b my-new-feature)Commit your changes (git commit -am 'Add some feature')Push to the branch (git push origin my-new-feature)Create new Pull Request

Find more information at: