Each time I make changes to code I have to restart the server or it won't change the output.
I have tried using thin and webrick.
My development.rb file says "config.cache_classes = false".
I am using RubyMine.
Sometimes my view updates, but the models never update.
Anything else you need to know to help me troubleshoot this problem?
EDIT:
I am away from my coding machine right now, but I started thinking. I have a file called makesandwich.rb in app/models directory and app/models/Lesson.rb calls a function in that file. I have been making changes to the makesandwich.rb file and it hasn't been reloading. Do I need to add that file or should it be included automatically in reload?
I recently had this problem as well. As others have said, it can be caused by setting config. cache_classes or config.threadsafe! to true, which will probably be the problem in most cases.
However, my problem was caused by running rails on a VM. My code was stored on a folder on my host machine, which was then mounted to the VM. Unfortunately, the clock time of my host machine was out of sync with the VM. Here's what would happen when I modified my code:
I'd change some code in a text editor on my host machine
Saving the code would set the modified time of the file to the current time for my host machine
This time was in the future, from the perspective of the VM
When the file update checker looked for modified files, it ignored my file since the modified date was in the future
Again, this is probably a pretty rare case, but it's worth checking this if you're running rails on a VM
If you're working on a Rails 3 project, you might find Zeus helpful. It keeps track of the files in your project, and reloads only the changed code in memory. It makes REPL a lot quicker for Rails 3 development.
https://github.com/burke/zeus
The problem was that I put a function in a separate file and was editing the function there. This will work fine for production, but for development purposes I put the function back in to the Lesson.rb file and the refreshing started working properly.
Related
I am building an openwrt firmware for an old mt7620 board for commercial purpose (captive portal)
I am encountering a strange behaviour when I try to save updated config files. I am trying to figure out the reason.
This is an example of what happens :
1 – FIRST TRIAL :
I compiled an old Chaos Calmer 15.01 openwrt version. From the console, I go to the /overlay/upper/etc/config:
Before reboot
I modify or delete the existing files in the [..]/etc/config/ folder
I create a new file for example "test" in [..]/etc/config/
I create a folder "new_folder" with a file inside
After reboot:
changes are not kept or deleted files are back in [..]/etc/config/ folder
the new file for example "test" is still there
the "new_folder" with its file inside are still there
Finally :
if I delete the new files "test" and "new_folder", after the reboot they are effectively deleted
So to sum-up : only pre-existing files in [..]/etc/config/ folder are reverted back at each reboot.
2 – SECOND TRIAL :
I compiled a firmware of the same version without UCI, when I modify the files in /etc/config/, changes made manually are kept after reboot, except 'wireless' which revert to its initial state.
It seems like some process involving UCI at startup use the original files and not the edited ones.
I took a look to the .sh scripts in /etc/init.d, /etc/rc.d, lib/config, lib/functions, lib/preinit... to see what is going on but its still not clear when and where config files are processed (even after looking at topics on the subject)
3 – THIRD TRIAL :
I managed to compile another firmware based on LEDE 17.01 to see if there are benefits. Unfortunately, I still have the same problem concerning the files in the /etc/config which always revert to their default value.
4 - FINALLY TO SUM-UP :
Is there a way to turn this behaviour off, or is it a kind of 'file protection' towards something that could be seen as 'currupted' by the system ?
Note :
I know that theses versions are very old and some people may recommend to upgrade it.
But, In regards to my constraints, I tried to update to openwrt versions >= 18.06. Each time I have kernel panics even by compiling with the custom changes I made that work with the previous versions (DTS file).
So, I am stuck with it for instance, I prefer having one problem at a time.
Sorry for the long post.
Thanks a lot, by advance, If someone have an idea or have already seen such a situation.
Best Regards.
Edit : Overlay at boot time
Overlay at boot time
I am trying to use jekyll locally to build my website. It is all set up, and I can build and serve and see results at localhost:4000. There are no errors.
The problem is that when I run "Jekyll serve" I can't save files. The save option is greyed out and "ctrl + s" wont work.
I can open and edit the files, can do "Save As" and do other things - basically anything except saving.
I can save files when I am not serving them.
From what I understand, Jekyll is intended to be used to allow saving while serving so we can see our changes as we go. The auto-regenerate function (now a default with serve) supports that use.
I suspect the problem relates to some sort of permissions-type rule stopping me from editing files that are in use.
But because I am self-taught newbie and am not a developer/programmer, I don't know if it is something to do with how I have set up jekyll, notepad++, permissions or something else entirely.
Here is my environment:
Windows 8.1 64-bit
Ruby v2.1.5p
Jekyll v2.5.1
wdm v0.1.0
RubyDevKit
Notepad++ (in admin mode)
Here is what I have tried:
Scaled back the listen gem from v2.10.0 to v2.7.11 (the earlier was listed as safe/tested on a jekyll on windows website)
Scaled back Jekyll from v2.5.3 to v2.5.1 (the earlier was listed as safe/tested on a jekyll on windows website)
Opened Notepad++ in admin mode instead of normal mode.
Tried executing jekyll serve --watch (in case watch enabled saving)
I have not tried re-installing ruby v2.1.3 (listed as safe/tested on a Jekyll on windows website) because Jekyll is otherwise working I don't want to try a re-install except as a last resort - as a newbie I found it a pain to install it on Windows in the first place.
Can anyone help me with this (probably simple) issue?
I thank you for any assistance in advance.
Okay. So I feel really stupid.
But instead of pretending this never happened, I had better post this answer in case anyone else has a blonde 'moment' (read: an entire day) like I did:
Firstly, you can't edit the _config.yml files while serving. You can edit the other files - html, markdown, etc - but not the config file.
Secondly, in Notepad++ you need to make an actual change to a document before the saving option will appear.
I was using the _config file as my 'test' document for regeneration. While I did open up other files to check when I first thought I had an issue, I THINK I may not have made any changes to them - so the option to save them was never activated. After that, I only looked at the config file after making changes.
So, I THINK I may have been able to save while serving all along.
However, if I am wrong and it wasn't my own stupidity (which I strongly doubt), the steps I took which fixed it were:
Those steps outlined in my question; and
A reinstall of Notepad++ (as kindly recommended by 'nerver nerver' who has since removed his/her comment after I said that did not work).
SORRY ... and excuse me while I go and crawl away and hide in shame ...
If the files you were editing at that time was only _config.yml then the expected behavior is that the saved changes are not reflected when the Jekyll server is running/watching.
This is because the server is started after reading the configuration settings in _config.yml, and then changes that happen to that special file after that are not monitored by Jekyll (this is current as of May 2015, in case this gets changed in the future). Currently this is by design. see this SO question as well
What that means is, you have been saving the file when Jekyll is running just fine, the changes just do not get updated. A way to check this is to make some changes, close the file, then open it again (if you want to be extra sure, open in another editor) and see if reflected changes show up.
Changes made to other files in Jekyll when the server is running will be reflected. For example, if I edit a typo in a blog post, edit CSS files or change some formatting, and save in any text editor, Jekyll will regenerate the file from scratch and you should be able to see the changes by refreshing the localhost:4000 page (or whereever your server is running at).
I'm not sure about running Jekyll on Windows, but on a Linux terminal, Jekyll actually notified the number of files that have changed (with a timestamp) and that it regenerated X number of files. Something like
<timestamp> 3 files have changed. Regenerated 3 files in 0.0536 sec..
Lastly, this is probably not your issue, but I thought I might add this here for future reference, do not edit the files inside the _site folder, as they are always deleted and regenerated whenever the server is started again. Editing those files by hand might save and display changes, but the changes will be lost (because they are, statically generated every time by Jekyll)
TL;DR You most probably have been saving your files! The changes in _config.yml are just not reflected once the server is running, and has to be restarted for the new configuration parameters to take effect.
Good morning to everyone, i am facing this problem:
Sometimes, after making modifications in my .py files, i restarted the server and saw nothing had changed. In fact the .pyc files were not regenerated so i want to know if someone can give me the good procedure to make that happens.
Now what I do is:
step1-add in eclipse params: --update=module_name
step2-click on settings ==> installed modules (the idea is to load the module again)
step3-be sure not to be in debug mode (you can remove debug from the address bar).
Could someone know how to do step 2 without using the web client (browser) i.e a way or a param to add when restarting the server so that the modules will be load again, because i remark that it is in this step that pyc files are regenerated.
Thank you in advance.
So reading between the lines, you are working in Eclipse and have changed and the pyc files are not new.
I would:
In Eclipse, Project -> Clean and clean your project.
Exit Eclipse and see if there is still a debug process lying about and kill it. These zombie debug processes happen if you terminate the server while it is stopped on a break point (in eclipse juno anyway, not sure about luna).
Either the eclipse builder will generate the pyc because that is part of building a project, or the Python vm will when it encounters the py file, or if a pyc exists it will check the times and ignore the pyc if it is older than the py. Updating the module may cause OpenERP to load that module and the python vm will generate the pyc but it doesn't matter whether you trigger this by updating the module when the server starts or just when you click on the function that triggers the piece of code.
One last suggestion, check your system time as the python vm is checking the file time stamps.
Every time I want to add new code to my site I have to modify the file outside of users view to debug it before updating the real file users see.
I usually create a copy of the file I want to change and test all changes on it but sometimes this files only appear included on another and I have to create two copies and sometimes it becomes even more complicated.
How is this normally done? Are there any tools to simplify the process, for example and enviroment to test my site on my PC so I don't have to upload files to the server each time I update something. Any info about beta testing new features will be thanked.
Most people have a 2nd server (potentially a virtual machine) configured exactly the same as their live (production) website. Where this 2nd server is located is completely up to you, but it should match your live site by using the same versions of software and same file structure.
I also like the idea of a staging server suggested by Sean. Again, your post doesn't say too much about your production web server and all of the features that you're using (are you running scripts on the server? PHP? some version of SQL?). But for a simple setup, you can run a copy of the Apache web server on your own PC, or something a little more lightweight like the XAMPP server.
How am I supposed to use ruby with development mode, which is not require me to restart my ruby process every time I made changes , just like Rails development mode, when I made changes no need to restart the code and the new code will be applied directly.
I think you can use gem shotgun for webapps server Reference
I dont think you can go ahead without restarting the app for changes!!!
Using load rather than require allows you to reload a file that you've edited since you've started the Ruby script.
That's what development mode does in Rails.
You don't need to keep restarting your app in every instance, for example when you change you controllers and views you wont have to.
If you change your routes or migrations you will need to restart for that.