CODEWITHSUNDEEP
ruby-on-rails
widjajayd
widjajayd

Reputation: 6253

looking better way to check not nil and active record count bigger than zero

currently I would like to print a report with many details, what I did currently is like sample code below

@report = Report.first
@details = @report.details
if @details
  # I'm using this code to check not nil
  if @details.count > 0
  # if it's not nil then I check if there is a record
    # print detail table
  end
end

if I'm looking better way to check not nil and the record count is bigger than zero.

Upvotes: 0

Views: 185

Answers (3)

max
max

Reputation: 102055

any?()

Returns true if there are any records.

@report = Report.includes(:details).first
@details = @report.details
if @details.any?
  # ...
end

Upvotes: 2

Makoto
Makoto

Reputation: 106440

Depending on the version of Rails you're running, you can use the try method instead.

if @report.try(:details).try(:any?)
    # logic
end

Upvotes: 1

Colton Ulmer
Colton Ulmer

Reputation: 76

Perhaps something as the following:

if @report.details.present?
#rest of code
end

Any questions ask below

Hope it helps!

Upvotes: 0

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