NoMethodError: undefined method `created_at' for nil:NilClass





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1















So I am playing around scopes in rails model.



These queries works perfectly in development environment but not production.



Here is my Fee model from where I am triggering active-record query to get specific invoices from StudentFeeInvoice Model.



app/models/fee.rb



most_recent_invoice = aStudent.student_fee_invoices.invoices_except_pending_and_adjusted.order(:created_at).last
new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)"


app/model/student_fee_invoice.rb



scope :invoices_except_pending_and_adjusted, -> {where("status != ? AND status != ?", "Pending", "Adjusted")}
scope :invoices_after_specific_date, -> (created_date) {where('created_at > ?', created_date)}


please correct me what I am doing wrong.
Thanks in advance !










share|improve this question

























  • I would love to explain if someone asks for context to explain furthermore to build understanding.

    – RanaAlie
    Jan 4 at 13:28


















1















So I am playing around scopes in rails model.



These queries works perfectly in development environment but not production.



Here is my Fee model from where I am triggering active-record query to get specific invoices from StudentFeeInvoice Model.



app/models/fee.rb



most_recent_invoice = aStudent.student_fee_invoices.invoices_except_pending_and_adjusted.order(:created_at).last
new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)"


app/model/student_fee_invoice.rb



scope :invoices_except_pending_and_adjusted, -> {where("status != ? AND status != ?", "Pending", "Adjusted")}
scope :invoices_after_specific_date, -> (created_date) {where('created_at > ?', created_date)}


please correct me what I am doing wrong.
Thanks in advance !










share|improve this question

























  • I would love to explain if someone asks for context to explain furthermore to build understanding.

    – RanaAlie
    Jan 4 at 13:28














1












1








1








So I am playing around scopes in rails model.



These queries works perfectly in development environment but not production.



Here is my Fee model from where I am triggering active-record query to get specific invoices from StudentFeeInvoice Model.



app/models/fee.rb



most_recent_invoice = aStudent.student_fee_invoices.invoices_except_pending_and_adjusted.order(:created_at).last
new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)"


app/model/student_fee_invoice.rb



scope :invoices_except_pending_and_adjusted, -> {where("status != ? AND status != ?", "Pending", "Adjusted")}
scope :invoices_after_specific_date, -> (created_date) {where('created_at > ?', created_date)}


please correct me what I am doing wrong.
Thanks in advance !










share|improve this question
















So I am playing around scopes in rails model.



These queries works perfectly in development environment but not production.



Here is my Fee model from where I am triggering active-record query to get specific invoices from StudentFeeInvoice Model.



app/models/fee.rb



most_recent_invoice = aStudent.student_fee_invoices.invoices_except_pending_and_adjusted.order(:created_at).last
new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)"


app/model/student_fee_invoice.rb



scope :invoices_except_pending_and_adjusted, -> {where("status != ? AND status != ?", "Pending", "Adjusted")}
scope :invoices_after_specific_date, -> (created_date) {where('created_at > ?', created_date)}


please correct me what I am doing wrong.
Thanks in advance !







ruby-on-rails activerecord rails-activerecord






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share|improve this question













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share|improve this question








edited Jan 4 at 13:46









ray

3,3731829




3,3731829










asked Jan 4 at 13:26









RanaAlieRanaAlie

53110




53110













  • I would love to explain if someone asks for context to explain furthermore to build understanding.

    – RanaAlie
    Jan 4 at 13:28



















  • I would love to explain if someone asks for context to explain furthermore to build understanding.

    – RanaAlie
    Jan 4 at 13:28

















I would love to explain if someone asks for context to explain furthermore to build understanding.

– RanaAlie
Jan 4 at 13:28





I would love to explain if someone asks for context to explain furthermore to build understanding.

– RanaAlie
Jan 4 at 13:28












1 Answer
1






active

oldest

votes


















1














most probably, aStudent.student_fee_invoices.invoices_except_pending_and_adjusted.order(:created_at).last
is returning nil



In that case you'll need something like:



new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice ? most_recent_invoce.created_at : DateTime.now)





share|improve this answer
























  • Love you @Roc Khalil ...!

    – RanaAlie
    Jan 4 at 13:38











  • You avoided error & transferred date to DateTime.now but are you sure will this date make sense for his further logic implementation ?

    – ray
    Jan 4 at 13:40











  • Actually I am using new_filter_for_invoices as a flag if its "0" I want next code of block not to be executed. so what about this new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)" if new_filter_for_invoices.present?

    – RanaAlie
    Jan 4 at 13:42












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1














most probably, aStudent.student_fee_invoices.invoices_except_pending_and_adjusted.order(:created_at).last
is returning nil



In that case you'll need something like:



new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice ? most_recent_invoce.created_at : DateTime.now)





share|improve this answer
























  • Love you @Roc Khalil ...!

    – RanaAlie
    Jan 4 at 13:38











  • You avoided error & transferred date to DateTime.now but are you sure will this date make sense for his further logic implementation ?

    – ray
    Jan 4 at 13:40











  • Actually I am using new_filter_for_invoices as a flag if its "0" I want next code of block not to be executed. so what about this new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)" if new_filter_for_invoices.present?

    – RanaAlie
    Jan 4 at 13:42
















1














most probably, aStudent.student_fee_invoices.invoices_except_pending_and_adjusted.order(:created_at).last
is returning nil



In that case you'll need something like:



new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice ? most_recent_invoce.created_at : DateTime.now)





share|improve this answer
























  • Love you @Roc Khalil ...!

    – RanaAlie
    Jan 4 at 13:38











  • You avoided error & transferred date to DateTime.now but are you sure will this date make sense for his further logic implementation ?

    – ray
    Jan 4 at 13:40











  • Actually I am using new_filter_for_invoices as a flag if its "0" I want next code of block not to be executed. so what about this new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)" if new_filter_for_invoices.present?

    – RanaAlie
    Jan 4 at 13:42














1












1








1







most probably, aStudent.student_fee_invoices.invoices_except_pending_and_adjusted.order(:created_at).last
is returning nil



In that case you'll need something like:



new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice ? most_recent_invoce.created_at : DateTime.now)





share|improve this answer













most probably, aStudent.student_fee_invoices.invoices_except_pending_and_adjusted.order(:created_at).last
is returning nil



In that case you'll need something like:



new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice ? most_recent_invoce.created_at : DateTime.now)






share|improve this answer












share|improve this answer



share|improve this answer










answered Jan 4 at 13:32









Roc KhalilRoc Khalil

375114




375114













  • Love you @Roc Khalil ...!

    – RanaAlie
    Jan 4 at 13:38











  • You avoided error & transferred date to DateTime.now but are you sure will this date make sense for his further logic implementation ?

    – ray
    Jan 4 at 13:40











  • Actually I am using new_filter_for_invoices as a flag if its "0" I want next code of block not to be executed. so what about this new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)" if new_filter_for_invoices.present?

    – RanaAlie
    Jan 4 at 13:42



















  • Love you @Roc Khalil ...!

    – RanaAlie
    Jan 4 at 13:38











  • You avoided error & transferred date to DateTime.now but are you sure will this date make sense for his further logic implementation ?

    – ray
    Jan 4 at 13:40











  • Actually I am using new_filter_for_invoices as a flag if its "0" I want next code of block not to be executed. so what about this new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)" if new_filter_for_invoices.present?

    – RanaAlie
    Jan 4 at 13:42

















Love you @Roc Khalil ...!

– RanaAlie
Jan 4 at 13:38





Love you @Roc Khalil ...!

– RanaAlie
Jan 4 at 13:38













You avoided error & transferred date to DateTime.now but are you sure will this date make sense for his further logic implementation ?

– ray
Jan 4 at 13:40





You avoided error & transferred date to DateTime.now but are you sure will this date make sense for his further logic implementation ?

– ray
Jan 4 at 13:40













Actually I am using new_filter_for_invoices as a flag if its "0" I want next code of block not to be executed. so what about this new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)" if new_filter_for_invoices.present?

– RanaAlie
Jan 4 at 13:42





Actually I am using new_filter_for_invoices as a flag if its "0" I want next code of block not to be executed. so what about this new_filter_for_invoices = aStudent.student_fee_invoices.invoices_after_specific_date(most_recent_invoice.created_at)" if new_filter_for_invoices.present?

– RanaAlie
Jan 4 at 13:42




















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