rubocop | Ruby static code analyzer and formatter | Code Analyzer library

 by   rubocop Ruby Version: v1.52.1 License: MIT

kandi X-RAY | rubocop Summary

kandi X-RAY | rubocop Summary

rubocop is a Ruby library typically used in Code Quality, Code Analyzer applications. rubocop has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Role models are important. -- Officer Alex J. Murphy / RoboCop. RuboCop is a Ruby static code analyzer (a.k.a. linter) and code formatter. Out of the box it will enforce many of the guidelines outlined in the community Ruby Style Guide. Apart from reporting the problems discovered in your code, RuboCop can also automatically fix many of them for you. RuboCop is extremely flexible and most aspects of its behavior can be tweaked via various configuration options. Working on RuboCop is often fun, but it also requires a great deal of time and energy.

            kandi-support Support

              rubocop has a medium active ecosystem.
              It has 12281 star(s) with 3025 fork(s). There are 182 watchers for this library.
              It had no major release in the last 12 months.
              There are 277 open issues and 4837 have been closed. On average issues are closed in 48 days. There are 42 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of rubocop is v1.52.1

            kandi-Quality Quality

              rubocop has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              rubocop is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              rubocop releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed rubocop and discovered the below as its top functions. This is intended to give you an instant insight into rubocop implemented functionality, and help decide if they suit your requirements.
            • Run the command .
            • Runs the analysis of the given file .
            • Initialize options
            • Saves the exceptions to the cache .
            • Adds output to output
            • Returns an array of all the pieces that have been created .
            • Iterates over the source code from the source code .
            • Recursively resolves the inheritance files in the configuration file .
            • Execute a cached file .
            • Takes an error out of the copy of the copy of the mixin .
            Get all kandi verified functions for this library.

            rubocop Key Features

            No Key Features are available at this moment for rubocop.

            rubocop Examples and Code Snippets

            No Code Snippets are available at this moment for rubocop.

            Community Discussions


            Bundler::GemNotFound: Could not find mimemagic-0.3.5 in any of the sources on Rails project with Docker
            Asked 2021-Jun-10 at 00:24

            I'm aware of the recent mimemagic issues, which I managed to resolve on one of my Rails projects by bundle updating to 0.3.7 - but for some reason, I can't resolve it on the project below.

            I have a Rails 6 project which I'm setting up for the first time on a new laptop. My laptop doesn't have the correct Ruby setup, so I've added a Dockerfile to my project like so:-




            Answered 2021-Mar-28 at 23:41
            bundle update --conservative mimemagic 



            Should I split a ruby single-line if statement into multi-line if statement because the line is long?
            Asked 2021-May-31 at 13:44

            I have a ruby single-line statement that is very long, about 200 characters. According to a ruby style guide, single-line if statement is favored here because the body is single-line.



            Answered 2021-May-31 at 13:44

            Style questions aside, if you want to maintain your current semantics, you can break lines at certain keywords and operators without escaping newlines with backslashes. For example:



            Bundler could not find rake in any of the resources
            Asked 2021-May-23 at 12:27

            Im running ruby version 2.6.1 with docker. Rake gem is version 13.0.1.
            Whenever I tried docker-compose up, it always fails and throws this error everytime:
            This error did not exist before.



            Answered 2021-May-23 at 12:27

            I'm not really sure what happened and why but I tried doing this on my rails container and I was no longer receiving the said error.

            1. docker-compose run --rm bash
            2. cd to project directory
            3. bundle install



            Rubocop, how to Disable/Enable cops on blocks of code
            Asked 2021-May-10 at 22:03

            I will like to disable a cop for a specific block or method.

            I know it is possible to disable a cop for the whole project using .rubocop.yml but I just want to deactivate the cop temporarily for a specific portion of the code



            Answered 2021-May-10 at 22:03

            I answer my question because it is always very difficult for me to find the reference to this solution:



            Ruby on Rails content_tag is deprecated, but I can't replicate its nesting capabilities using tag
            Asked 2021-May-07 at 23:07

            The project I'm working on requires some of the data table's column titles to be referenced/defined in a footnote below the table.

            As it's dynamic content that will be looped over depending on how many of the column titles require footnotes, I need to handle most of this in via models/helpers. I have been able to replicate the html our US designer wants using content_tag, but rubocop is whining about the use of content tag and says I should be using tag instead. But I can't get the nesting of the html tags to work at all using the tag method.

            The section html I'm trying to produce is this (which will be repeated for as many footnotes are needed):



            Answered 2021-May-07 at 15:57

            It looks to me like content_tag and tag are part of rails It looks like only what is being deprecated is the format of the tag helper defaulting to an XHMTL empty tag instead of an HTML 5 type of tag. There are reports of incorrect behavior by rubocop targeting content_tag when it is tag which should be targeted.

            You might check on the arguments to content_tag for empty tags since it might not be defaulting the same way as before.



            Do not define constants this way within a block. When defining class within a block
            Asked 2021-Apr-19 at 09:46

            Im defining a class within the routes block to handle ajax stuff



            Answered 2021-Apr-18 at 23:55

            From the docs:

            Do not define constants within a block, since the block’s scope does not isolate or namespace the constant in any way.

            If you are trying to define that constant once, define it outside of the block instead, or use a variable or method if defining the constant in the outer scope would be problematic.

            You can define the OnlyAjaxRequest class outside the block to fix the issue.



            Rubocop RSpec/MultipleMemoizedHelpers issue on pundit spec tests
            Asked 2021-Apr-18 at 13:36

            I use pundit for authorization and RSpec for testing in my rails app. Due to this, I had to create specs for the policies.

            However, I am having a problem with rubocop throwing an error: RSpec/MultipleMemoizedHelpers. I understand that this means I have too many let and subject calls. My issue is I'm not quite sure how to resolve or refactor my code so it adheres to the proper number of calls I should make.

            Another thing, is it okay to disable RSpec/MultipleMemoizedHelpers for spec files?

            Here are three of the policy spec files that are an issue.



            Answered 2021-Apr-18 at 13:36

            This RSpec/MultipleMemoizedHelpers cop is controversial. It wants you to limit the number of let to an arbitrary number.

            I fought hard against it. To me it is similar to a cop that would raise an offense because you have too many variables. rubocop and rubocop-ast have it disabled, while we typically enable more cops that the default. Note that you could change these let to def and the offenses go away (although you haven't changed anything; let is just syntax sugar for a def).

            Sharing your factories seems like a good idea, and I recommend disabling the cop too.



            How to disable some Rubocop inspections in RubyMine
            Asked 2021-Apr-11 at 07:46

            I can't find any solution on how to disable some Rubocop inspections in RubyMine. Ex. the "use single quote string instead of double-quote".

            And there are some other inspections that I would like to disable.

            I tried going to the "Editor | Inspections" in the settings but you can't change it there.

            I also saw that there should be a .rubocop.yml file somewhere but I can't find it anywhere.

            It would be also cool if I could set it for every project rather than just this one.



            Answered 2021-Apr-11 at 07:46

            In RubyMine you can configure the inspection named 'String can be converted to single quoted'. As for Rubocop's configuration, yes, you need to use .rubocop.yml file, which isn't created automatically. Please refer to RubyMine and Rubocop documentation for more details.



            Docker build step not persisting filesystem changes
            Asked 2021-Mar-23 at 11:32

            I have a multi-stage Dockerfile for building a Rails app that includes webpacked frontend assets.

            The step with RUN bin/rails assets:precompile calls webpack to build all the .js and .css assets to publish to public/packs. This works fine. The problem is, the changes from this RUN step are not persisted. One would expect the following to work:



            Answered 2021-Mar-23 at 11:32

            Delete the VOLUME line.

            The only particularly obvious effect of a VOLUME directive is that it prevents any following RUN command from changing that directory. Declaring a VOLUME in your Dockerfile is almost never necessary (and volumes aren't appropriate storage for source code); you can just delete that line and nothing bad will happen.



            Error when running Cucumber test scenario in RubyMine
            Asked 2021-Mar-18 at 15:18

            For full transparency, I started learning about Cucumber an hour ago. I've been following a concise tutorial on using Selenium in Ruby with Cucumber and I've had no issues until this point.

            In essence, I'm trying to run a test scenario(?) but I am receiving this error:



            Answered 2021-Mar-18 at 15:18

            This is a RubyMine bug. Nothing we can fix on the Cucumber end.

            You can either consult a non-recommended monkeypatch / hack. Or downgrade to an early version of Cucumber5.

            See for more information, including other possible workarounds and a time-frame for the fix from Jetbrains.

            Luke - Cucumber Ruby committer.


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


            No vulnerabilities reported

            Install rubocop

            RuboCop's installation is pretty standard:.
            Just type rubocop in a Ruby project's folder and watch the magic happen.


            You can read a lot more about RuboCop in its official docs.
            Find more information at:

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