cancan | Authorization Gem for Ruby on Rails | Authorization library
kandi X-RAY | cancan Summary
kandi X-RAY | cancan Summary
Authorization Gem for Ruby on Rails.
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Top functions reviewed by kandi - BETA
- Matches the conditions against the conditions
- Finds resource by name
- Matches the conditions and conditions
- Initialize resource class
- Loads the instance of the Resource instance
- Generate an action for an action .
- Returns the resource class for the resource
- Set the attributes of the resource
- Loads the resource
- Gets the permission for an action .
cancan Key Features
cancan Examples and Code Snippets
Community Discussions
Trending Discussions on cancan
QUESTION
I am working on a project called web portal for billboards management. My routes.rb looks like:
...ANSWER
Answered 2022-Feb-27 at 22:43perhaps you should read first, i think it can be understanable
https://github.com/CanCanCommunity/cancancan
https://github.com/CanCanCommunity/cancancan/blob/develop/docs/README.md
there is Ability class you need to define
perhaps something like this
QUESTION
public class ChartData {
//lv22 double charts
public String[] walkInThePark = {"CanCan", "Cleaner", "Meteo5cience", "FFF22", "Wedding Crasher", "Hyponosis22", "Redline", "1950", "Monolith", "Just hold on", "Revolution", ""};
//lv23 double charts
private String[] timeToSuffer = {"Travel To Future", "Nililism", "Creed", "HTTP", "Cross Over", "Final Autition 2-1", "Love is a Danger Zone", "Gargoyle", "Broken Karma", "BS Explosion", "Windmill", "Prime Time", "Clematis", "Nyar", "Your Mind", "D&D", "Red Snow", "Stardream", "Crossing Delta", "Video Out C"};
//lv24 double charts
private String[] chooseDeath = {"la Cinq", "Gloria", "Vanish", "Harma", "Conflict", "Sarabande", "Bedlam", "Final Audition", "Achluoias", "FFF24", "Full moon", "Full moon FULL", "Annihilator", "Creed FULL", "BrainPower", "lolite", "Dement", "Destri", "Cross Soul", "TFTMN FULL", "Errorcode", "Dignity", "A Site De La Rue", "Trashy", "Paved Garden", "V3"};
Random r = new Random();
Scanner sc = new Scanner(System.in);
public void select(){
do{
System.out.println("Please choose from the following: \n 1. WalkInThePark(lv22 double charts) \n 2. timeToSuffer(lv23 Double Charts) \n 3. chooseDeath(lv24 double charts)");
int select = sc.nextInt();
switch (select){
case 1:
System.out.println("That's sorta weak, my dude... :");
chill();
break;
case 2:
System.out.println("I see you:");
suffer();
break;
case 3:
System.out.println("You decided to not B**** out. Here's your list:");
death();
break;
}
}while(true);
}
public void chill(){
Set set = new HashSet<>();
for(int i = 0 ; i < 4 ; i++){
int r_int = r.nextInt(11);
String chooseChill = (walkInThePark[r_int]);
if(!set.contains(chooseChill)){
set.add(chooseChill);
System.out.println(chooseChill);
}else{
i--;
continue;
}
}
}
public void suffer(){
Set set = new HashSet<>();
for(int i = 0 ; i < 4 ; i++){
int r_int = r.nextInt(19);
String chooseSuffer = (timeToSuffer[r_int]);
if(!set.contains(chooseSuffer)){
set.add(chooseSuffer);
System.out.println(chooseSuffer);
}else{
i--;
continue;
}
}
}
public void death(){
Set set = new HashSet<>();
for(int i = 0 ; i < 4 ; i++){
int r_int = r.nextInt(26);
String chosenDeath = (chooseDeath[r_int]);
if(!set.contains(chosenDeath)){
set.add(chosenDeath);
System.out.println(chosenDeath);
}else{
i--;
continue;
}
}
}
}
ANSWER
Answered 2022-Jan-24 at 16:50The only ways in which your chill(), suffer() and death() functions differ are in the range of the random integer as well as the array used (chooseDeath, timeToSuffer or walkInThePark), both of which you could pass to the function as an argument instead to unify them into one function.
QUESTION
I am using Python 3.9.5 and PyQt6.
Following my previous questions, I want to ask about how to dynamically how to resize QGroupBox to fit its contents.
I have a QScrollArea, its layout is a QVBoxLayout, and a bunch of QGroupBoxs will be added to the QVBoxLayout.
The QGroupBoxs themselves have a QVBoxLayout, and inside the QVBoxLayout are a bunch of QVBoxLayouts, and inside the QVBoxLayouts inside the QVBoxLayout of the QGroupBox are the contents.
Each lowest level QVBoxLayout has two widgets and a QHBoxLayout.
From top to bottom, the first widget is a QLabel, which is fixed-sized 100x20, and the second widget is a QTextEdit which auto-resizes to content. And inside the QHBoxLayout is a stretch and a fixed-sized button with size of 60x20, the button can either be hidden or shown.
The hierarchy of the widgets and layouts is this:
...ANSWER
Answered 2021-Jul-08 at 08:25I have finally did it, the problem is when I just created the objects and didn't add them to the main window, they all have default sizes and values, and the value changes when they are added to the window.
So I just need to calculate their sizes and resize them AFTER I have added them to the window.
In my observation, the QVBoxLayouts in the QGroupBoxs always have margins of (9, 9, 9, 9), and all the layouts where the widgets actually are don't have margins, and the QGroupBoxs themselves have margins of (3, 20, 3, 3) in my main script, so I could just explicitly set these margins and use these values.
This is how I have done it:
QUESTION
I am back again with my ctrlpanel application.
I have it 100% working in development and went through the process to get it loaded up to Heroku and got the app up, gems installed. DB is there (mostly) but I have an issue even before the DB. I am getting an error dealing with devise_invitable that I DO NOT get in Development. To my surprise I do get the same error when I launch production on my laptop which was shocking to me to say the least as everything works perfect in development. So I know it isn't a Heroku issue which I am happy about at least I can reproduce it. The full error is below here but the line that specifically deals with the error is:
...ANSWER
Answered 2021-May-06 at 05:40The recommendation to move invitations_controller.rb into an app/controllers/users folder is the correct one. That's the path that matches your route:
QUESTION
I am more of a Java programmer and still somewhat new to development (2 years or so, can write Java code & web apps just fine) however the company I work for has 4 Rails applications and was asked to get this application working called CtrlPanel. I have been having to learn Ruby on Rails in order to help get this issue with this app fixed and get it working.
I have been working on this problem for over a week all day long every day and nothing I do is fixing it.
I fixed everything to the point the app comes up, web server runs serves the pages but all views are white screens as long as this application.html.haml file is present. I re-wrote the file with very basic bootstrap and it sort of works but nothing looks right. The problem seems to stem from 1 single like that simply says: = javascript_include_tag "application"
I have been all over the internet and have tried every single fix from changing coffee-script-source to v1.8.0 as I read Windows has an issue with newer rails and that file, I have tried every variation of changing it from application to default, and every type of ending you can think of no matter what I do it gives me this error message which I can not seem to find.
I am not even sure WHAT that line does, I assume it has to do with the new Google Maps API and I verified the key is valid and it was working before.
This is the error is it giving it says the line with "= javascript_include_tag" "application" giving error ExecJS::RuntimeError at / SyntaxError: [stdin]:1:1: unexpected //=
I am running a PC on Windows 10 20H2 x64 UEFI ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x64-mingw32] Rails 6.1.3
(I did also install Ubuntu on another machine and it gives the exact same error, also gives the same error on another Windows machine)
The app is working IF I delete the "application.html.haml" file and put in a skeleton basic version all of the other views start working but of course none of them look right no menus no bootstrap no nothing.
Here is the application.html.haml file.
ANSWER
Answered 2021-May-04 at 18:59I did finally figure out what this was.
The older versions of rails in this case v4.2.1 used the javascript_include_tag for the line that deals with application:
= javascript_include_tag "application"
In the newer versions of rails in my case v6.1.3.1 you have to use javascript_pack_tag
= javascript_pack_tag
This solved the issue and the views all started working. I did mention above I was working on a PC running Rails v6.1.3; however I noticed I didn't make it clear that I was also having to upgrade this program from Ruby v2.2.2 and Rails v4.2.1 to Ruby v 2.7.2 and Rails v6.1.3, that might have helped to have made that more clear. Apologies if that confused anyone. I am still VERY new to Rails and using StackOverflow.com. I am happy to report I have only 1 single issue left on this program and the rest of the program is all working properly. I will be posting another question in fact because the last issue deals with a complicated scope query and it uses different syntax again due to the newer version of rails and I haven't been able to figure it out. In any even if you are running an older version of Rails and you are trying to get the program to work on a newer version (my case as I couldn't get rails v4.2 to run or work on ANYTHING, PC, Linux nothing) then you have to change the include_tag to a pack_tag. I do not pretend to say I fully understand why. I know it has to do with webpacker but beyond that I am still learning Rails. Perhaps someone with more knowledge than myself can shed some insite as to why the syntax changed. Oh and in addition the line ended up needing to read as follows:
= javascript_pack_tag "application", "data-turbolinks-track": "reload"
I didn't have the turbolinks reference either.
I hope this helps someone else in a similar situation that I was in, it was not easy to find. I only discovered it when I went through some tutorials on making other generic apps and saw the difference on that line.
QUESTION
I have cloned an existing project and trying to run it in my system. Since this is the first time I don't have any Gemfile.lock file in my directory. I tried running bundle install and the following errors occur:
...ANSWER
Answered 2021-Apr-10 at 18:06In your project directory, try installing rails gem install rails -v 4.1.6 and removing the version from the failing gems like (liquid_markdown, gon, etc..) then try running bundle update then bundle clean --force
I think this might be an issue because all the version of these gems are locked inside your Gemfile
QUESTION
I have a cancan ability that says a user can create a Message if it's theirs
ANSWER
Answered 2021-Feb-09 at 10:02Yes :new is an alias of :create
See here:
https://github.com/CanCanCommunity/cancancan/wiki/Action-Aliases
QUESTION
Here's an example of where we need to trust that the conversation_id wasn't altered by the user:
ANSWER
Answered 2021-Jan-27 at 14:39The rails way to do this would be to use a nested route instead of passing conversation_id through the request body:
QUESTION
In ability.rb
ANSWER
Answered 2021-Jan-22 at 17:13i think you miss the check that should raise the unauthorized response. In your action, you should have something like this:
QUESTION
when I try to run bundle install , I got the following error:
...ANSWER
Answered 2020-Oct-13 at 11:37Try updating your Gemfile to use json@1.8.2 instead of 1.8.1 - according to this thread Ruby 2.2.x is incompatible with json 1.8.1.
1.8.2 should be functionally similar and not affect any of your other dependencies.
You can also run bundle update json to let bundler try to fix it for you - but that may put you at a much later version than 1.8.2, I'm not sure.
No harm in trying a couple things and reverting your changes.
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Vulnerabilities
No vulnerabilities reported
Install cancan
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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