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# IssueCollection can be used to reduce a list of issues down to a subset.
#
# IssueCollection is not meant to be some sort of Enumerable, instead it's meant
# to take a list of issues and return a new list of issues based on some
# criteria. For example, given a list of issues you may want to return a list of
# issues that can be read or updated by a given user.
class IssueCollection
attr_reader :collection
def initialize(collection)
@collection = collection
end
# Returns all the issues that can be updated by the user.
def updatable_by_user(user)
return collection if user.admin?
# Given all the issue projects we get a list of projects that the current
# user has at least reporter access to.
projects_with_reporter_access = user.
projects_with_reporter_access_limited_to(project_ids).
pluck(:id)
collection.select do |issue|
if projects_with_reporter_access.include?(issue.project_id)
true
elsif issue.is_a?(Issue)
issue.assignee_or_author?(user)
else
false
end
end
end
alias_method :visible_to, :updatable_by_user
private
def project_ids
@project_ids ||= collection.map(&:project_id).uniq
end
end
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