Jump to content
teppo

Version Control

Recommended Posts

This module is improved and extended successor to Version Control For Text Fields. It handles everything it's predecessor did -- providing basic version control features for page content -- and quite a bit more. Download or clone from GitHub: https://github.com/teppokoivula/VersionControl.

This module requires ProcessWire 2.4.1 or later, mostly because of the file features, which require certain Pagefile and Pageimage methods to be hookable. There's no sensible way around this limitation; for those stuck with < 2.4.1, Version Control For Text Fields will remain a viable option.

What does it do?

While editing pages, fields with old revisions available show up with a new icon in their header bars. By hovering that icon you get a list of available revisions and by clicking any one of those the value of that particular field is reverted to that revision. No changes are made to page until you choose a revision and save the page, which means that you can keep switching between revisions to get an idea what's really changed without inadvertently causing any content to change.

The module also adds a History tab to page edit. This tab opens a view to the history of current page in the form of "revisions" -- each of which is a group of changes to page fields processed during one page save (similar to revisions in various source control applications). There are three actions you can perform on these revisions: adding comments, live previewing what the page might've looked in that revision and restoring the page to specific revision.

One specific feature that has been a big thing for me personally is support for file (and image) fields, as the original version control module felt rather incomplete without it. I'm hoping to take this a lot further performance, stability and feature wise, but as it stands right now, it's already included here and should be fully functional.

Watch the video preview here

I prepared a little screencast outlining most of this: http://youtu.be/AkEt3W7meic. Considering that it was my first screencast ever, I'd like to think that it wasn't that bad.. but I might give it another shot at some point, this time planning a bit before hitting "record"  :)

Upgrading from Version Control For Text Fields

For those already using Version Control For Text Fields, I've added something extra. If you upgrade that module to it's latest version, you should see a new checkbox in it's settings screen saying "Don't drop tables during uninstall". If you check this, uninstall the module and then remove it's files (this is required in order to install Version Control), your old data should be automagically imported to Version Control.

Import has only been tested with limited amounts of demo data. Proper tests are yet to come, so please be careful with this feature!

Update, 21.6.2015: as of today, this module is no longer in beta. While all the regular warnings still apply (making changes, including installing any new modules, on a production site should always be considered risky) Version Control has gone through pretty extensive testing, and should be as stable as any other module out there.

Edited by teppo
Added a note about not being a beta release anymore
  • Like 34
  • Thanks 1

Share this post


Link to post
Share on other sites

Very nice and I believe it will be a very useful tool.

  • Like 1

Share this post


Link to post
Share on other sites

Amazing module with impressive ease of use! And really slick and jaw dropping inline-page-version preview!

  • Like 1

Share this post


Link to post
Share on other sites

Huge release! Congratulations Teppo! I love the preview UI, very neat.

  • Like 2

Share this post


Link to post
Share on other sites

This is awesome Teppo!

Of course near the end it looks like many versions are created as adding images saves the page behind the scenes via Ajax so that's one way you'll end up with a lot of revisions (did I remember that correctly or make it up?). I'm wondering if it's worth making it so it only stores revisions when updating image and file fields AFTER the Save button is pressed? Or did you already take that into account?

Loving this module and it will be fascinating to see how you handled the image and file fields when I dig into the code :)

  • Like 3

Share this post


Link to post
Share on other sites

Thanks guys, really appreciate all the kind words! :)

@Pete: you're right, each AJAX upload creates new revision at the moment. This is difficult to circumvent without sacrificing reliability, but I'll give it some thought.

Since each asynchronous file upload creates separate POST request updating value of given field, it's actually logical that each of those would also create new revision. From technical point of view this is no different than doing something like "$page->title = 'foo'; $page->save('title');" via API, since the end result is exactly same; whether or not user actually realises it, page content changes instantly each time a file has been uploaded.

Anyway, I'll have to see if this could be somehow improved :)

Share this post


Link to post
Share on other sites

I don't see any other way for files really. Maybe bundling multiple (meaning no other changes in between and max few minutes time) additions or removes into same revision. That could be done in UI only.

Share this post


Link to post
Share on other sites

My thinking was simply checking if the input button has been clicked and only creating a revision if $this->input->post->submit_save is present.

Along similar lines, it would be great to have the option of not creating a version of any field until the page is published (no versions for an unpublished page).

Both of these are useful/desirable in some scenarios and not in others so I'm happy for them to be configurable options - as it is the module is already awesome :)

Share this post


Link to post
Share on other sites

@Pete: thanks for both suggestions. I'll have to see if I can find a way to add these without affecting current behaviour negatively and creating unwanted inconsistencies between API and GUI behaviour :)

This is getting slightly off-topic, but as I've been diving into various version and/or source control systems lately, I've started seeing them, first and foremost, as a way to keep track of what really happened, so that you can later review the full chain of events that led to current state and retrace your steps.

That's apparently not how everyone else feels, though. Even Pro Git, which I've been browsing every now and then for ideas as well as Git tips, has an entire chapter titled "Git Tools - Rewriting History", explaining how to alter (prettify, falsify, whatever you call it) local commit history.

I guess it's, in the end, all about finding the right balance between flexibility and consistency :)

Share this post


Link to post
Share on other sites
as a way to keep track of what really happened, so that you can later review the full chain of events that led to current state and retrace your steps.

I hope that you will be able to stay faithful to some type of reliable transactional based version control.  I believe it will play a big part in where and how applications built on this can be deployed.

Anyway, I have always been impressed with your version control module.  Good Luck.

Share this post


Link to post
Share on other sites

Wow! This looks really amazing. Appears that I'll be having lunch at my desk today and testing this out. :)

I really like @pete's suggestions, and @antti's idea of a time interval for bundling. 

Share this post


Link to post
Share on other sites
After a vanilla Processwire 2.4 install, I can't get Version Control module working fully...

Module compatibility is stated as Processwire 2.4 (current stable version).

After Version Control install, Page Snapshot dependancy is not installed and states it requires 2.4.1 minimum.

‘Preview revision’ on the ‘History’ tab gives:

'TemplateFile: Method Page::snapshot does not exist or is not callable in this context'

Upgrading to Processwire 2.4.4 (current dev) allows module and dependancies to install.

‘Preview revision’ on the ‘History’ tab gives:

'TemplateFile: SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens'

and php error:

'Undefined variable: page_ids in site/modules/VersionControl/PageSnapshot.module on line 253'

Version Control 0.9.15 installed. 

Version Control history is enabled for basic-page template.

Any ideas? Have I missed something?

Share this post


Link to post
Share on other sites

@sid: sounds kind of like you could have an earlier version of Page Snapshot module installed. Could please you check that you're running version 1.1.18 of it?

I'm sorry for the confusion about supported ProcessWire version. Dev branch is really needed to run this module. My original post mentioned that the module requires "2.4.1 or later, i.e. current dev branch", but since modules directory doesn't allow submissions unless you define a version ranging from 2.0 to 2.4 as compatible.. well, I can see how that could happen.

Share this post


Link to post
Share on other sites

Thanks for the reply - I have:

Page Snapshot 1.1.18

Process Version Control 0.9.5

Version Control 0.9.15

All 3 PHP errors are:

Undefined variable: page_ids in site/modules/VersionControl/PageSnapshot.module on line 253

Undefined variable: page_ids in site/modules/VersionControl/PageSnapshot.module on line 261

array_merge(): Argument #2 is not an array in site/modules/VersionControl/PageSnapshot.module on line 261

all of which feed into the SQL query missing parameter error when the statement is executed on PageSnapshot.module line 263 I guess?

Share this post


Link to post
Share on other sites

Thanks! There was an issue in PageSnapshot.module preventing it from working properly unless FieldtypeRepeater was installed too.

I've just pushed fix for that to GitHub, so if you could fetch latest version and see if it works any better?

Share this post


Link to post
Share on other sites

Page Snapshot 1.1.19 fixes the problem for me - thank you very much

Share this post


Link to post
Share on other sites

Hi teppo, is there a way to get the changes from the api?

$page->currentVersion->typicalFunctions;

$page->previousVersion->typicalFunctions;

I’m looking at implementing a status notification system for a project and this would be handy. For this I would need to grab different fields or a specific one and check for differences using a hook.

Share this post


Link to post
Share on other sites

Sorry for the delayed answer, Pierre-Luc! Been busy with other stuff and this totally slipped my mind.
 
What you've described there wasn't really possible without direct SQL queries until just a few moments ago. I've just pushed to GitHub an update to VersionControl.module (0.10.0) that adds new $page->versionControlRevisions() method. This isn't properly tested yet, but something like this should work:

// current value of field 'headline'
echo "Headline for current revision: {$page->headline}<br />";

// value of field 'headline' in previous revision
$revisions = array_keys($page->versionControlRevisions(2));
$page->snapshot(null, $revisions[1]);
echo "Headline for previous revision: {$page->headline}<br />";

// return Page to it's original (current) state
$page->snapshot();
echo "Back to current revision: {$page->headline}<br />";

Since snapshot() returns Page object to given revision or point in time ($page->snapshot($time, $revision)) you'll want to make sure it's back to it's original state in case you're going to make changes and save the page -- otherwise the revision you fetched with snapshot will be returned from history once you save the page.
 
$page->versionControlRevisions() returns an array of revisions for current page and can optionally take one param, $limit, to fetch only that many revisions if more exist. It's return value is in the form of array([revision] => [timestamp]), i.e. array(4 => '2014-01-01 02:00:00', 3 => '2014-01-01 01:00:00') etc. so in order to get just the revision IDs out of that I'm using array_keys() in the example above.
 
You could probably also do something like this, if you want to make sure that Page doesn't get accidentally returned from history (this'll consume more memory, though):

$revisions = array_keys($page->versionControlRevisions(2));
$page->previousVersion = clone $page;
$page->previousVersion->snapshot(null, $revisions[1]);
echo "Headline for previous revision: {$page->previousVersion->headline}<br />";

Not sure if you're still working on this, but this kind of feature felt useful so I'm glad you brought it up.. :)

  • Like 6

Share this post


Link to post
Share on other sites

That’s pretty neat teppo! The feature will be implemented a bit further down the road on this project so it’s far from too late! I’ll let you know when I’ll start playing with it. Awesome, thanks again!

Share this post


Link to post
Share on other sites

ran into a snafu today, here's the setup and behavior:

- Page table field (called reviews)

when adding a review, the review would save but then the field itself wouldn't save so the related page wouldn't be added into the page table and there would be a 500 error;  tried uninstalling various modules, but in the end it came down to this one, when i removed the template from the selected list of templates, the field started saving again; i will try and provide more info, but the errors were not specific to anything other than setting output formatting as false for the the page table field before saving...

Share this post


Link to post
Share on other sites

I just unliked the first post just to like it again. silly.

Sorry Macrura, if that doesn't help with you problem :mellow:

Share this post


Link to post
Share on other sites

@Macrura: if I'm getting this right, you're just adding a page to a PageTable field, and when Version Control is installed, this fails with a 500 error (internal server error). The page (review) itself gets added and saved properly, apparently.

To be clear, which template did you remove from Version Control enabled templates -- the one used for reviews or the one containing the PageTable field? Also, is there anything added to the error logs of Apache or PW?

I was kind of assuming that this module would attempt to store values for the PageTable field itself, which could've easily resulted in an error (don't think that I ever tested that), but since it's not in the supported fields by default, that's unlikely. Unless you've manually added PageTable to the list of supported fields? :)

Any additional info would be helpful. I'll continue testing, but at the moment I'm kind of lost here, and haven't been able to reproduce this issue.

Edit: added PageTable to supported fieldtypes locally. Doesn't work (as expected), but doesn't seem to break anything either. Will continue debugging.

Edited by teppo

Share this post


Link to post
Share on other sites

@teppo - many thanks for replying and sorry for the vagueness of my bug report;

to clarify, yes, there is a page table field where the ajax saving of the field fails when the Version Control is enabled for this template; i only have 3 fields enabled for VC, which are all simple text and body fields.

I removed the template of the containing page from the VC preferences and that allowed the pt field to be saved.

there were errors in the error log (cleared it though), but I'm not sure if they would help, but if so i can re-enable the VC on this template to generate the error if that would help... this site is still in testing, not live, so it's no problem to do that; i can probably get to that later today...

Share this post


Link to post
Share on other sites

there were errors in the error log (cleared it though), but I'm not sure if they would help, but if so i can re-enable the VC on this template to generate the error if that would help... this site is still in testing, not live, so it's no problem to do that; i can probably get to that later today...

Thanks. That would be very helpful (probably), since right now I'm kind of out of ideas here. It's probably something simple, I'm just failing to see what it could be.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By MoritzLost
      TrelloWire
      This is a module that allows you to automatically create Trello cards for ProcessWire pages and update them when the pages are updated. This allows you to setup connected workflows. Card properties and change handling behaviour can be customized through the extensive module configuration. Every action the module performs is hookable, so you can modify when and how cards are created as much as you need to. The module also contains an API-component that makes it easy to make requests to the Trello API and build your own connected ProcessWire-Trello workflows.
      Features
      All the things the module can do for you without any custom code: Create a new card on Trello whenever a page is added or published (you can select applicable templates). Configure the target board, target list, name and description for new cards. Add default labels and checklists to the card. Update the card whenever the page is updated (optional). When the status of the card changes (published / unpublished, hidden / unhidden, trashed / restored or deleted), move the card to a different list or archive or delete it (configurable). You can extend this through hooks in many ways: Modifiy when and how cards are created. Modify the card properties (Target board & list, title, description, et c.) before they are sent to Trello. Create your own workflows by utilizing an API helper class with many convenient utility methods to access the Trello API directly. Feedback & Future Plans
      Let me know what you think! In particular:
      If you find any bugs report them here or on Github, I'll try to fix them. This module was born out of a use-case for a client project where we manage new form submissions through Trello. I'm not sure how many use-cases there are for this module. If you do use it, tell me about it! The Trello API is pretty extensive, I'll try to add some more helper methods to the TrelloWireApi class (let me know if you need anything in particular). I'll think about how the module can support different workflows that include Twig – talk to me if you have a use-case! Next steps could be a dashboard to manage pages that are connected to a Trello card, or a new section in the settings tab to manage the Trello connection. But it depends on whether there is any interest in this 🙂 Links
      Repository on Github Complete module documentation (getting started, configuration & API documentation) [Module directory pending approval] Module configuration

    • By MoritzLost
      Process Cache Control
      This module provides a simple solution to clearing all your cache layers at once, and an extensible interface to perform various cache-related actions.
      The simple motivation behind this module was that I was tired of manually clearing caches in several places after deploying a change on a live site. The basic purpose of this module is a simple Clear all caches link in the Setup menu which clears out all caches, no matter where they hide. You can customize what exactly the module does through it's configuration menu:
      Expire or delete all cache entries in the database, or selectively clear caches by namespace ($cache API) Clear the the template render cache. Clear out specific folders inside your site's cache directory (/site/assets/cache) Clear the ProCache page render cache (if your site is using ProCache) Refresh version strings for static assets to bust client-side browser caches (this requires some setup, see the full documentation for details). This is the basic function of the module. However, you can also add different cache management action through the API and execute them through the module's interface. For this advanced usage, the module provides:
      An interface to see all available cache actions and execute them. A system log and logging output on the module page to see verify what the module is doing. A CacheControlTools class with utility functions to clear out different caches. An API to add cache actions, execute them programmatically and even modify the default action. Permission management, allowing you granular control over which user roles can execute which actions. The complete documentation can be found in the module's README.
      Plans for improvements
      If there is some interest in this, I plan to expand this to a more general cache management solution. I particular, I would like to add additional cache actions. Some ideas that came to mind:
      Warming up the template render cache for publicly accessible pages. Removing all active user sessions. Let me know if you have more suggestions!
      Links
      https://github.com/MoritzLost/ProcessCacheControl ProcessCacheControl in the Module directory CHANGELOG in the repository Screenshots


    • By Macrura
      PrevNextTabs Module
      Github: https://github.com/outflux3/PrevNextTabs
      Processwire helper modules for adding page navigation within the editor.
      Overview
      This is a very simple module that adds Previous and Next links inline with the tabs on the page editor. Hovering over the tab shows the title of the previous or next page (using the admin's built in jqueryUI tooltips.)
      Usage
      This module is typically used during development where you or your editors need to traverse through pages for the purpose of proofing, flagging and/or commenting. Rather than returning to the page tree or lister, they can navigate with these links.
      Warnings
      If you are using PW version 2.6.1 or later, the system will prevent you from leaving the page if you have unsaved edits.
      For earlier versions, to avoid accidentally losing changes made to a page that might occur if a user accidentally clicks on one of these, make sure to have the Form Save Reminder module installed.
      http://modules.processwire.com/modules/prev-next-tabs/
    • By Gadgetto
      SnipWire - Snipcart integration for ProcessWire
      Snipcart is a powerful 3rd party, developer-first HTML/JavaScript shopping cart platform. SnipWire is the missing link between Snipcart and the content management framework ProcessWire.
      With SnipWire, you can quickly turn any ProcessWire site into a Snipcart online shop. The SnipWire plugin helps you to get your store up and running in no time. Detailed knowledge of the Snipcart system is not required.
      SnipWire is free and open source licensed under Mozilla Public License 2.0! A lot of work and effort has gone into development. It would be nice if you could donate an amount to support further development:

      Status update links (inside this thread) for SnipWire development
      2020-03-21 -- SnipWire 0.8.5 (beta) released! Improves SnipWires webhooks interface and provides some other fixes and additions 2020-03-03 -- SnipWire 0.8.4 (beta) released! Improves compatibility for Windows based Systems. 2020-03-01 -- SnipWire 0.8.3 (beta) released! The installation and uninstallation process has been heavily revised. 2020-02-08 -- SnipWire 0.8.2 (beta) released! Added a feature to change the cart and catalogue currency by GET, POST or SESSION param 2020-02-03 -- SnipWire 0.8.1 (beta) released! All custom classes moved into their own namespaces. 2020-02-01 -- SnipWire is now available via ProcessWire's module directory! 2020-01-30 -- SnipWire 0.8.0 (beta) first public release! (module just submitted to the PW modules directory) 2020-01-28 -- added Custom Order Fields feature (first SnipWire release version is near!) 2020-01-21 -- Snipcart v3 - when will the new cart system be implemented? 2020-01-19 -- integrated taxes provider finished (+ very flexible shipping taxes handling) 2020-01-14 -- new date range picker, discount editor, order notifiactions, order statuses, and more ... 2019-11-15 -- orders filter, order details, download + resend invoices, refunds 2019-10-18 -- list filters, REST API improvements, new docs platform, and more ... 2019-08-08 -- dashboard interface, currency selector, managing Orders, Customers and Products, Added a WireTabs, refinded caching behavior 2019-06-15 -- taxes provider, shop templates update, multiCURL implementation, and more ... 2019-06-02 -- FieldtypeSnipWireTaxSelector 2019-05-25 -- SnipWire will be free and open source Plugin Key Features
      Fast and simple store setup Full integration of the Snipcart dashboard into the ProcessWire backend (no need to leave the ProcessWire admin area) Browse and manage orders, customers, discounts, abandoned carts, and more Multi currency support Custom order and cart fields Process refunds and send customer notifications from within the ProcessWire backend Process Abandoned Carts + sending messages to customers from within the ProcessWire backend Complete Snipcart webhooks integration (all events are hookable via ProcessWire hooks) Integrated taxes provider (which is more flexible then Snipcart own provider) Useful Links
      SnipWire in PW modules directory SnipWire Docs (please note that the documentation is a work in progress) SnipWire @GitHub (feature requests and suggestions for improvement are welcome - I also accept pull requests) Snipcart Website  
      ---- INITIAL POST FROM 2019-05-25 ----
       
×
×
  • Create New...