How to check group membership with ruby code?

I'm trying to find a proper syntax of doing such thing below. I want to add each members of a specific group as watchers if one of members of the group creates an issue.

The code below just the idea of what I'm trying to do:

if User.current Group.find(id).member_of? {
(Group.find(id).users).each { |user| self.add_watcher(user) unless watched_by?(user)
}
}

Replies (4)

RE: How to check group membership with ruby code? - Added by kumar abhinav over 5 years ago

Hi Taner,

Will this help?

  group = Group.find(id)
  if User.current.is_or_belongs_to?(group)
    group.users.each {|user| self.add_watcher(user)} 
  rescue ActiveRecord::RecordNotFound
    # handle_resuce
  end

check for unless watched_by?(user) not needed, there is DB constraint in place to prevent duplicate records.

RE: How to check group membership with ruby code? - Added by Taner Tas over 5 years ago

Hi Kumar,
Thank you very much. This is first time I got a response from redmine forum. And it is a good one!

Your code worked in "Redmine Custom Workflow" plugin except "rescue ActiveRecord::RecordNotFound" line. I had to comment it out.
This is the error:

syntax error, unexpected rescue, expecting end rescue ActiveRecord::RecordNotFound

This is the custom workflow script:

if subject.present?
  group = Group.find(21)
  if User.current.is_or_belongs_to?(group)
    group.users.each {|user| self.add_watcher(user)} 
  rescue ActiveRecord::RecordNotFound
    # handle_resuce
  end
end

RE: How to check group membership with ruby code? - Added by kumar abhinav over 5 years ago

Hi Taner,

You are welcome.

My mistake, the rescue should have been after the if end block.
You could also do:

 group = Group.find(21) rescue nil
 if group && User.current.is_or_belongs_to?(group)

As find will raise an exception if group is not found, it should be handled.

RE: How to check group membership with ruby code? - Added by Taner Tas over 5 years ago

Thank you. It worked.
Final Custom Workflow script:

if subject.present?
  group = Group.find(21) rescue nil
  if group && User.current.is_or_belongs_to?(group)
    group.users.each {|user| self.add_watcher(user)}
  end
end

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