Fix missing attribute error and typo in Getting Started: Using Concerns #40847
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By following the guide "Using Concerns", application will raise `ActiveModel::MissingAttributeError` as` status` column is not added. The following three actions will fix this issue: 1. run migration commands 2. include a select box in forms when creating/editing articles and comments 3. permit `:status` key in strong parameter With reference to: https://guides.rubyonrails.org/active_record_migrations.html#creating-a-standalone-migration Fix a slight typo for module `Visible`.
rafaelfranca
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Dec 16, 2020
Fix missing attribute error and typo in Getting Started: Using Concerns
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Summary
By following the guide "Using Concerns", application will raise
ActiveModel::MissingAttributeError.This is because
statuscolumn is not added, and user did not provide thestatusparameter when creating articles and comments.The following three actions will fix this issue:
:statuskey in strong parameterFix a slight typo for module
Visibleto make it identical to previous appearancesOther Information
As a new programmer who just started learning programming as well as Ruby on Rails, I spent quite some time searching for possible typo in my code, only come to realise that the guide was actually not a complete one that lets the rails app run without error.
I do hope that even if my changes were not accepted, the guide could still include a paragraph indicating that "extra steps need to be taken, but we will not delve too deep here".
Thanks in advance!