rack-mini-profiler | Profiler for your development and production Ruby rack apps | Monitoring library
kandi X-RAY | rack-mini-profiler Summary
kandi X-RAY | rack-mini-profiler Summary
Middleware that displays speed badge for every html page. Designed to work both in production and in development.
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Top functions reviewed by kandi - BETA
- Initialize a Rack application .
- Analyze memory data into memory
- Gets the profile for a specific theme .
- Renders all snapshots of a snapshot .
- Renders the results of a snapshot .
- Logs information about the given duration .
rack-mini-profiler Key Features
rack-mini-profiler Examples and Code Snippets
Community Discussions
Trending Discussions on rack-mini-profiler
QUESTION
I recently upgraded from Rails 6.1.4.6 to 7.0.2.2. With this upgrade I switched from webpacker to import maps with sprockets. My repo didn't include turbolinks or stimulus and I didn't feel like adding them now either. So I re-added UJS and most of my tests pass except the action cable feature tests. It seems I cannot get action cable to connect.
Any help would be appreciated!
Gemfile
...ANSWER
Answered 2022-Mar-09 at 22:08Figured out the problem was because I had two applications.js files. One in app/assets/javascripts/ and another in app/javascript. Sprockets was serving my asset version of application.js due to my manifest pointing there. I adjusted the manifest and deleted the secondary application.js and all is working.
QUESTION
I am learning the basics of Rails by creating a simple blog app, as per this guide - https://guides.rubyonrails.org/v6.1/getting_started.html
When I try to run the server using ruby bin\rails server, the server successfully starts on localhost:3000, but I get the following error when I open it in browser:-
ANSWER
Answered 2022-Feb-28 at 05:40Solution:-
Apparently, there was a conflict with the version. As Abhinay mentioned in the comment, I switched to Ruby 2.7.5, and the app started working.
QUESTION
I'm trying to test my pagination feature with rspec/capybara. I created the articles using FactoryBot but encountered two issues. If I create the data:
- in a
beforeblock, the data is saved to the database and not wiped after the suite runs. - inside a scenario block and use
save_and_open_pageto see if the data shows on the screen, it doesn't show. So, I believe that the data doesn't have enough time to save.
gemfile:
...ANSWER
Answered 2022-Feb-26 at 19:38Your main issue here is out-of-order execution. You're visiting the page before creating the objects needing for your test, therefore the objects aren't visible on the rendered page (they didn't exist when the page was rendered). For most tests you won't want to be calling visit in a before block, unless you have a series of test that all require the same test data, and visiting the same page. In this case just move the visit into the scenario. Additionally, don't over-specify the selectors for the elements you're looking for because it will make your tests brittle. You don't show what your html looks like, but assuming this page is only showing one list of articles then checking for just one of your classes may be enough, or scoping your expectation to a page area, and then using a more general CSS selector
QUESTION
I'm very new to Rails and full-stack development in general. I've just finished Michael Hartl's Ruby on Rails Tutorial 6th edition and am walking through it again to build my first project (i.e. an app that's different from the sample app built in the book, but draws on a lot of the same lessons). Catch is that new project is using Rails 7.
It was going well until I ran into issues around Chapter 7; my app will not render a partial with error messages for bad submissions to the new user form. The code in the partial executes (as verified with debugger, and later with a puts statement to output on console), but the HTML doesn't output (i.e. it cannot be found when inspecting the page in Chrome). There is a CSS issue related to newer version of bootstrap, but I even tried downgrading to the bootstrap version from the book (3.4.1) with no luck. (the offending CSS segment is commented out below)
I've banged my head on this for a few hours. Hoping it's just something dumb I'm missing. If it's a broader issue with Bootstrap vs Importmaps or something I'd also appreciate references on good places to learn these. I am extremely grateful for any ideas!
Edit This definitely isn't an issue with passing local variables into the partial; see code snippet and comment added at the end of this post.
app/views/users/new.html.erb:
...ANSWER
Answered 2022-Feb-14 at 02:28Try this in app/views/users/new.html.erb
<%= render 'shared/error_messages', user: @user %>
If it's a shared partial, maybe make the instance variable generic rather than @user also. That way it can be reused and less confusing later.
QUESTION
I am learning Hotwire-rails, following both the gorails.com and the Hotwire.dev examples. I am running Ruby 3.0.2 and Rails 6.1.4.1. The symptom is at the very start. After rails new xxx, I edit Gemfile to add gem 'hotwire-rails', then bundle install. At this point my app/javascript/packs/application.js is now:
...ANSWER
Answered 2021-Nov-11 at 12:27This seems like everything is working correctly rails just likes to output what its doing to the console but it should have added those to your file.
QUESTION
I'm trying to set up my first Rails 7 app and have installed Bootstrap 5 properly (you can see by the CSS) and gotten rid of all the error messages, but the javascript functions (i.e. dropdown menus, offcanvas, etc.) aren't working.
I have tested it with this code:
...ANSWER
Answered 2022-Jan-29 at 22:51I had the same problem.
I got things working by adding the bundle script from Bootstrap in the between the body tags of the application.html.erb file:
QUESTION
I have a new rails 7 application which is using the importmap-rails gem to manage the javascript frontend libraries.
I am attempting to use the Semantic-UI library, but the dependency for jQuery is not being recognized by the Semantic-UI javascript.
I was unable to pin the Semantic-UI library via importmap, so I added this library to the importmap.rb manually. Here is a link the cdn for semantic.min.js I am using.
The following error message appears in the console on Chrome Web Tools and the collapsible accordions are not functioning that I have on the page to validate the javascript.
...ANSWER
Answered 2022-Jan-10 at 19:11I resolved this issue by manually updating the source for jquery pinned in importmap.rb from the source that the original bin/importmap pin jquery pointed at which was:
https://ga.jspm.io/npm:jquery@3.6.0/dist/jquery.js
to now be
https://code.jquery.com/jquery-3.6.0.min.js
Additionally, I added some jquery code to application.js to run when the document is loaded (per the documentation on Semantic-UI's website
QUESTION
I've managed to consistently reproduce a deadlock situation (I believe) despite following the following resources:
- https://guides.rubyonrails.org/threading_and_code_execution.html#executor
- https://github.com/rails/rails/issues/27025#issuecomment-260169414
The following code will deadlock:
...ANSWER
Answered 2022-Jan-04 at 02:45Okay, I figured it out.
It seems that this is an issue with the Zache gem. See this line:
https://github.com/yegor256/zache/blob/master/lib/zache.rb#L206
This I believe introduces an external sleep.
I was able to fix my code by wrapping the method BEFORE called zache.get
Something like this:
QUESTION
I'm trying to create a test with Rspec in my rails application but I keep getting the following error.
...ANSWER
Answered 2021-Nov-23 at 10:00Check you have the right model inside the app/models/ directory.
spec/models/build_spec.rb
QUESTION
I'm new in ruby on rails and Solidus. I created my project by following this guide: https://guides.solidus.io/developers/getting-started/first-time-installation.html
Then, I want to change my default currency from "USD" to "AUD" in config/initializers/spree.rb
( config.currency = "AUD" )
Then, when I go to http://localhost:3000/admin/products. It shows (* other pages work normal)
Please help.(Tried restart server but same)
Ruby version: ruby '3.0.2'
Solidus version: "solidus", "~> 3.0"
Rails 6.1.4.1
spree.rb
...ANSWER
Answered 2021-Aug-28 at 12:21Solved by using the following code: Spree::Price.update_all(currency: 'AUD')
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install rack-mini-profiler
In a complex web application, it's possible for a request to trigger rare conditions that result in poor performance. Mini Profiler ships with a feature to help detect those rare conditions and fix them. It works by enabling invisible profiling on one request every N requests, and saving the performance metrics that are collected during the request (a.k.a snapshot of the request) so that they can be viewed later. To turn this feature on, set the snapshot_every_n_requests config to a value larger than 0. The larger the value is, the less frequently requests are profiled. Mini Profiler will exclude requests that are made to skipped paths (see skip_paths config below) from being sampled. Additionally, if profiling is enabled for a request that later finishes with a non-2xx status code, Mini Profiler will discard the snapshot and not save it (this behavior may change in the future). After enabling snapshots sampling, you can see the snapshots that have been collected at /mini-profiler-resources/snapshots (or if you changed the base_url_path config, substitute mini-profiler-resources with your value of the config). You'll see on that page a table where each row represents a group of snapshots with the duration of the worst snapshot in that group. The worst snapshot in a group is defined as the snapshot whose request took longer than all of the snapshots in the same group. Snapshots grouped by HTTP method and path of the request, and if your application is a Rails app, Mini Profiler will try to convert the path to controller#action and group by that instead of request path. Clicking on a group will display the snapshots of that group sorted from worst to best. From there, you can click on a snapshot's ID to see the snapshot with all the performance metrics that were collected. Access to the snapshots page is restricted to only those who can see the speed badge on their own requests, see the section below this one about access control.
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