问题
I'm using Prawn PDF to generate an invoice PDF on the fly and I keep getting the error "can't write unknown attribute 'info'" but I don't have an attribute 'info' anywhere in any of the concerned database tables (or my entire database for that matter). I don't know if it's something in the gem that I'm missing. Here is the tutorial I'm following: http://www.idyllic-software.com/blog/creating-pdf-using-prawn-in-ruby-on-rails/ and http://www.sitepoint.com/pdf-generation-rails/
I did register the mime type in the initializer (didn't show bc it's so simple, but I can if that's needed)
I also restarted the server multiple times to make sure that wasn't the issue.
I know the gem is installed properly because I can generate an empty PDF no problem, but when I try to add in @invoice is when I run into the issue.
Invoice Show Controller Action:
def show
@invoice = Invoice.find(params[:id])
@customer = @invoice.customer
@user = current_user
@company = @user.company
respond_to do |format|
format.html
format.pdf do
pdf = InvoicePdf.new(@invoice)
send_data pdf.render, filename: "invoice_#{@invoice.created_at.strftime("%m/%d/%Y")}.pdf", type: "application/pdf"
end
end
end
InvoicePdf.rb
class InvoicePdf < Prawn::Document
def intialize(invoice)
super()
@invoice = invoice
end
def header
image "https://www.google.com/images/srpr/logo11w.png", width: 530, height: 150
end
def text_content
y_position = cursor - 50
bounding_box([0, y_position], :width => 270, :height => 300) do
text "Lorem ipsum", size: 15, style: :bold
text "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse interdum semper placerat. Aenean mattis fringilla risus ut fermentum. Fusce posuere dictum venenatis. Aliquam id tincidunt ante, eu pretium eros. Sed eget risus a nisl aliquet scelerisque sit amet id nisi. Praesent porta molestie ipsum, ac commodo erat hendrerit nec. Nullam interdum ipsum a quam euismod, at consequat libero bibendum. Nam at nulla fermentum, congue lectus ut, pulvinar nisl. Curabitur consectetur quis libero id laoreet. Fusce dictum metus et orci pretium, vel imperdiet est viverra. Morbi vitae libero in tortor mattis commodo. Ut sodales libero erat, at gravida enim rhoncus ut."
end
bounding_box([300, y_position], :width => 270, :height => 300) do
text "Duis vel", size: 15, style: :bold
text "Duis vel tortor elementum, ultrices tortor vel, accumsan dui. Nullam in dolor rutrum, gravida turpis eu, vestibulum lectus. Pellentesque aliquet dignissim justo ut fringilla. Interdum et malesuada fames ac ante ipsum primis in faucibus. Ut venenatis massa non eros venenatis aliquet. Suspendisse potenti. Mauris sed tincidunt mauris, et vulputate risus. Aliquam eget nibh at erat dignissim aliquam non et risus. Fusce mattis neque id diam pulvinar, fermentum luctus enim porttitor. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos."
end
end
end
Full Trace:
activerecord (4.1.0) lib/active_record/attribute_methods/write.rb:72:in `write_attribute'
activerecord (4.1.0) lib/active_record/attribute_methods/dirty.rb:68:in `write_attribute'
activerecord (4.1.0) lib/active_record/attribute_methods.rb:390:in `[]='
pdf-core (0.6.0) lib/pdf/core/document_state.rb:42:in `normalize_metadata'
pdf-core (0.6.0) lib/pdf/core/document_state.rb:5:in `initialize'
prawn (2.0.2) lib/prawn/document.rb:200:in `new'
prawn (2.0.2) lib/prawn/document.rb:200:in `initialize'
app/controllers/invoices_controller.rb:23:in `new'
app/controllers/invoices_controller.rb:23:in `block (2 levels) in show'
actionpack (4.1.0) lib/action_controller/metal/mime_responds.rb:258:in `call'
actionpack (4.1.0) lib/action_controller/metal/mime_responds.rb:258:in `respond_to'
app/controllers/invoices_controller.rb:20:in `show'
actionpack (4.1.0) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (4.1.0) lib/abstract_controller/base.rb:189:in `process_action'
actionpack (4.1.0) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.1.0) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
activesupport (4.1.0) lib/active_support/callbacks.rb:113:in `call'
activesupport (4.1.0) lib/active_support/callbacks.rb:113:in `call'
activesupport (4.1.0) lib/active_support/callbacks.rb:149:in `block in halting_and_conditional'
activesupport (4.1.0) lib/active_support/callbacks.rb:149:in `call'
activesupport (4.1.0) lib/active_support/callbacks.rb:149:in `block in halting_and_conditional'
activesupport (4.1.0) lib/active_support/callbacks.rb:166:in `call'
activesupport (4.1.0) lib/active_support/callbacks.rb:166:in `block in halting'
activesupport (4.1.0) lib/active_support/callbacks.rb:149:in `call'
activesupport (4.1.0) lib/active_support/callbacks.rb:149:in `block in halting_and_conditional'
activesupport (4.1.0) lib/active_support/callbacks.rb:229:in `call'
activesupport (4.1.0) lib/active_support/callbacks.rb:229:in `block in halting'
activesupport (4.1.0) lib/active_support/callbacks.rb:166:in `call'
activesupport (4.1.0) lib/active_support/callbacks.rb:166:in `block in halting'
activesupport (4.1.0) lib/active_support/callbacks.rb:86:in `call'
activesupport (4.1.0) lib/active_support/callbacks.rb:86:in `run_callbacks'
actionpack (4.1.0) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (4.1.0) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.1.0) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.1.0) lib/active_support/notifications.rb:159:in `block in instrument'
activesupport (4.1.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.1.0) lib/active_support/notifications.rb:159:in `instrument'
actionpack (4.1.0) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.1.0) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
activerecord (4.1.0) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.1.0) lib/abstract_controller/base.rb:136:in `process'
actionview (4.1.0) lib/action_view/rendering.rb:30:in `process'
actionpack (4.1.0) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.1.0) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.1.0) lib/action_controller/metal.rb:231:in `block in action'
actionpack (4.1.0) lib/action_dispatch/routing/route_set.rb:80:in `call'
actionpack (4.1.0) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
actionpack (4.1.0) lib/action_dispatch/routing/route_set.rb:48:in `call'
actionpack (4.1.0) lib/action_dispatch/journey/router.rb:71:in `block in call'
actionpack (4.1.0) lib/action_dispatch/journey/router.rb:59:in `each'
actionpack (4.1.0) lib/action_dispatch/journey/router.rb:59:in `call'
actionpack (4.1.0) lib/action_dispatch/routing/route_set.rb:676:in `call'
omniauth (1.2.2) lib/omniauth/strategy.rb:186:in `call!'
omniauth (1.2.2) lib/omniauth/strategy.rb:164:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) lib/warden/manager.rb:34:in `catch'
warden (1.2.3) lib/warden/manager.rb:34:in `call'
rack (1.5.2) lib/rack/etag.rb:23:in `call'
rack (1.5.2) lib/rack/conditionalget.rb:25:in `call'
rack (1.5.2) lib/rack/head.rb:11:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/flash.rb:254:in `call'
rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/cookies.rb:560:in `call'
activerecord (4.1.0) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.1.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:621:in `call'
activerecord (4.1.0) lib/active_record/migration.rb:380:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.1.0) lib/active_support/callbacks.rb:82:in `run_callbacks'
actionpack (4.1.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
better_errors (2.1.1) lib/better_errors/middleware.rb:59:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.1.0) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.1.0) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.1.0) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.1.0) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.1.0) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.1.0) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
rack (1.5.2) lib/rack/runtime.rb:17:in `call'
activesupport (4.1.0) lib/active_support/cache/strategy/local_cache_middleware.rb:26:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
actionpack (4.1.0) lib/action_dispatch/middleware/static.rb:64:in `call'
rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
railties (4.1.0) lib/rails/engine.rb:514:in `call'
railties (4.1.0) lib/rails/application.rb:144:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
/home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
/home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
/home/action/.parts/packages/ruby2.1/2.1.1/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'
回答1:
Still have no idea what the problem was, but it must've had a glitch on the install. I redid the whole setup for prawn and it works now...nothing else different.
来源：https://stackoverflow.com/questions/31966557/cant-write-unknown-attribute-info-prawnpdf