CODEWITHSUNDEEP
ruby-on-rails-3prawn
SHANib
SHANib

Reputation: 718

Ruby on rails application using Prawn gem for pdf generation makes an error while rendering: undefined method `text' for nil:NilClass

code in controller

def download_report
  @downloads  = StatisticDownload.select("date(Date) as downloaded_date, count(id) as count").where("DownloadSuccess=?","1").group("date(Date)")
  respond_to do |format|
    format.pdf { @downloads }
  end
end

Created view

# download_report.pdf.prawn
pdf.text "Download ##{@downloads.id}", :size => 30, :style => :bold

downloads = @downloads.map do |downloads|
  [
    downloads.file,
    downloads.id
  ]
end

But ../generate_report.pdf generates an error: You have a nil object when you didn't expect it! You might have expected an instance of Array. The error occurred while evaluating nil.map

i have installed prawn 0.12.0 and prawnto.

Upvotes: 1

Views: 1229

Answers (2)

chetan
chetan

Reputation: 89

For this refer the http://www.idyllic-software.com/blog/creating-pdf-using-prawn-in-ruby-on-rails/

you can find easy solution..

Upvotes: 2

Seamus Abshere
Seamus Abshere

Reputation: 8516

Try removing the whole respond_to block, so you will have:

def download_report
  @downloads  = StatisticDownload.select("date(Date) as downloaded_date, count(id) as count").where("DownloadSuccess=?","1").group("date(Date)")
end

Alternatively, if you really need the respond_to block, don't specify a block after format.pdf:

def download_report
  @downloads  = StatisticDownload.select("date(Date) as downloaded_date, count(id) as count").where("DownloadSuccess=?","1").group("date(Date)")
  respond_to do |format|
    format.pdf
  end
end

In both cases, I'm guessing you need to let prawnto's controller magic take over.

Upvotes: 0

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