Rebake all posts matching a pattern

(Arpit Jalan) #1

Want to rebake all the posts matching a string or regular expression? Let’s do it!

Access Your Site

First connect to your Droplet via SSH, and enter the Docker container for your Discourse instances:

cd /var/discourse
./launcher enter app

Rebake All Posts Containing a Specific String

Run this command:

rake posts:rebake_match["pattern"]

Replace pattern with the string you want to match. Note that the match performed will be case insensitive.

rake posts:rebake_match[":slight_smile:"]

The above command will rebake all posts which contains :slight_smile: in post raw body.

Rebake All Posts Matching a Regular Expression

To use regular expressions instead of specific string matches:

rake posts:rebake_match["pattern",regex]

PostgreSQL uses POSIX Regular Expressions to perform regex matching. The matching will be case-sensitive.

rake posts:rebake_match["(:slight_smile:|Discourse)",regex]

Rebake all posts containing :slight_smile: or Discourse in post raw body.

rake posts:rebake_match["^Today",regex]

Rebake all posts which starts with Today.

rake posts:rebake_match["^(Today|Yesterday)",regex]

Rebake all posts which starts with Today or Yesterday.

Optional: Add a delay between successive rebakes

In case you want to add a 5 seconds delay between successive rebakes, do:

rake posts:rebake_match["pattern",string,5]

Replace 5 with n (seconds) as per your requirement.

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Rebake all posts?
(Arpit Jalan) #3

A post was split to a new topic: Fixing data after import


Didn’t work for me, untill I reverted latest changes to posts.rake
(Sorry, couldn’t find any issue board on Github)


I’ll take a look later today. Were there any error messages?

root@<not relevant>:/var/www/discourse# rake posts:rebake_match["<img.*>",regex]
rake aborted!
NameError: undefined local variable or method `search' for main:Object
/var/www/discourse/lib/tasks/posts.rake:62:in `block in <top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'
Tasks: TOP => posts:rebake_match
(See full trace by running task with --trace)
root@<not relevant>:/var/www/discourse# rake posts:rebake_match[":slight_smile:",regex] -t
** Invoke posts:rebake_match (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute posts:rebake_match
rake aborted!
NameError: undefined local variable or method `search' for main:Object
/var/www/discourse/lib/tasks/posts.rake:62:in `block in <top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/task.rb:251:in `block in execute'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/task.rb:251:in `each'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/task.rb:251:in `execute'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/task.rb:195:in `block in invoke_with_call_chain'
/usr/local/lib/ruby/2.4.0/monitor.rb:214:in `mon_synchronize'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/task.rb:188:in `invoke_with_call_chain'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/task.rb:181:in `invoke'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/application.rb:153:in `invoke_task'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/application.rb:109:in `block (2 levels) in top_level'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/application.rb:109:in `each'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/application.rb:109:in `block in top_level'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/application.rb:118:in `run_with_threads'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/application.rb:103:in `top_level'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/application.rb:81:in `block in run'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/application.rb:179:in `standard_exception_handling'
/var/www/discourse/vendor/bundle/ruby/2.4.0/gems/rake-12.1.0/lib/rake/application.rb:78:in `run'
bin/rake:4:in `<top (required)>'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/cli/exec.rb:74:in `load'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/cli/exec.rb:74:in `kernel_load'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/cli/exec.rb:27:in `run'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/cli.rb:362:in `exec'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/vendor/thor/lib/thor.rb:387:in `dispatch'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/cli.rb:22:in `dispatch'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/vendor/thor/lib/thor/base.rb:466:in `start'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/cli.rb:13:in `start'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/exe/bundle:30:in `block in <top (required)>'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/lib/bundler/friendly_errors.rb:121:in `with_friendly_errors'
/usr/local/lib/ruby/gems/2.4.0/gems/bundler-1.15.4/exe/bundle:22:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'
Tasks: TOP => posts:rebake_match


I just opened a PR to fix the issue.

Thanks for letting me know!

(pari) #8

I have the following error

root@server-app:/var/www/discourse# rake posts:rebake_match[""]
rake aborted!
NameError: undefined local variable or method `search' for main:Object
/var/www/discourse/lib/tasks/posts.rake:62:in `block in <top (required)>'
/usr/local/bin/bundle:22:in `load'
/usr/local/bin/bundle:22:in `<main>'
Tasks: TOP => posts:rebake_match
(See full trace by running task with --trace)

(Arpit Jalan) #9

Are you running on latest Discourse version? As you can see just above your post @xrav3nz fixed this and that PR is merged.

(Colin Marshall) #10

Is it possible to rebake all posts from a specific user?

(Jay Pfaffman) #11

Not with that rake task. You could do it from the rails console.
Something like

posts = Post.where (user_id: 123)

posts.each do |p|

(Colin Marshall) #12


One more situation. I migrated a forum from SMF to discourse and there are all these posts that say “Sent from my (device name) using Tapatalk.” I ran a query and got rid of that line from all posts that contained it.

I tired running rake posts:rebake_match["Tapatalk”] but that didn’t work because I’m assuming it matches from the raw post data and that query removed the word I’m trying to match.

Is there a way to I can match against the built html from the rails console?

(Jay Pfaffman) #13
posts = Post.where ("cooked like '%Tapatalk%'")