acts_as_tree | NOTICE official repository moved to https | Dataset library
kandi X-RAY | acts_as_tree Summary
kandi X-RAY | acts_as_tree Summary
Specify this acts_as extension if you want to model a tree structure by providing a parent association and a children association. This requires that you have a foreign key column, which by default is called parent_id. Copyright (c) 2007 David Heinemeier Hansson, released under the MIT license.
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Trending Discussions on acts_as_tree
QUESTION
I am creating a Blog app, I am trying to write the destroy method in Users Controller to handle the situation, when User is being destroyed. I want it to trigger the action of deleting all related objects, but when I specify" dependent: :destroy" in the models I get N+1 query (or N*M if that's possible..) - every single article is being deleted one by one, then all the comments, all the tags, all the taggings (table to handle HABTM relationship).
I have tried to write the Service Object to get rid of this long query, but I can't get it to work, because I "violate foreign key constraint". What are the possibilites here? I don't want to allow nils in my DB just to be able to easily clean the DB by running query that looks for nils in DB (to avoid strange input by users), so dependent: :nullify won't work here... Also I'd rather not use Callbacks if that's possible.
What also bothers me when choosing the solution with Services, that I first wait for User to be deleted and then call Service to clean Orhpans.. but when the code is executed wrongly, I end up with nils - should I use transactions on this?
User can be the author of article, which is tagged, it can be commented by other users.
Here are the main classes:
User:
...ANSWER
Answered 2018-May-16 at 14:55This is expected behavior. You have a few options:
1) You can create a service object that does all the deletion manually through queries, starting with your furthest-away relationship. for example:
QUESTION
I have an issue I've been trying to fix for about the past week. I am trying to create a nested commenting system using the closure_tree gem. I finally figured out how to pass the parent_id as part of the params and now the entire hash is filled correctly in the server log, however every time I try to save a reply my log shows a rollback before the comment is saved. All comments belong_to wad.
Here is the relevant code in my Comment controller:
...ANSWER
Answered 2018-Feb-04 at 23:38As far as I can see the logs, params are:
QUESTION
I am new to ROR and am having serious issues with trying to create nested comments. In my app a user can create a post (wad). Each wad has many comments and every comment belongs_to only one wad. My resources are nested as follows:
...ANSWER
Answered 2018-Feb-01 at 04:13Because you’re using a nested route, you have to pass the wad along with the comment in your link_to call. Something like this:
QUESTION
Alright, so I have three models which are User Document and Folder.
I'm using the gems Paperclip and Acts_as_tree. The point in this is that each user will be able to create a new document with an attached file. The user will also be able to create folders and in that folder, there will be documents.
The issue that I'm getting is that when I try to create a new document I get back the error "Folder must exist". This even happens when I'm in a folder and I'm creating a new document. I know I'm missing something small in my code but I can't seem to get it. I'll show my code.
Documents controller
...ANSWER
Answered 2018-Feb-02 at 08:47The issue is belongs_to :folder its mean that before saving the document object you must have folder_id
QUESTION
I am working on a Ruby on Rails project that has similar functionalities as dropbox. The gems I use:
- carrierwave: Uploading files
- acts_as_tree: Folder directory
- slim: cleaner html
- bootstrap 4
I am trying to incorporate bootstrap modals that renders the edit form so that users are able to edit the file_name attribute I have in my model.
...ANSWER
Answered 2017-Apr-06 at 09:55The issue could be that you are using same data-target for rename buttom click to open model and every Modal have same id
Try using an iterator to each id
QUESTION
I am currently using the acts_as_tree gem and wish to display all my category names, separated by parent category names. Here is what I have tried.
...ANSWER
Answered 2017-Mar-13 at 01:35What exactly is category.parent? If it isn't nil or explicitly false, then
<%= category.parent.name if category.parent %> will always display category.parent.name, because the if statement is essential checking whether category.parent exists. And assuming a parent exists for each child, it will display the parent each time. You'll have to change the if statement.
Sorry I couldn't be of more help, perhaps I could give a suggestion if you edit the post to include the code from category or parent.
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Install acts_as_tree
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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