Tag activerecord - Dit is bladsy 3 - GeneraCodice

How can I pull latest posts, with unique authors, so that if an author wrote two posts in a row, it only gets the first?

https://www.generacodice.com/af/articolo/13660417/how-can-i-pull-latest-posts-with-unique-authors-so-that-if-an-author-wrote-two-posts-in-a-row-it-only-gets-the-first
  database  -  sql  -  ruby  -  ruby-on-rails  -  activerecord
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Referencing an associated ActiveRecord model's attributes efficiently (Rails 4)

https://www.generacodice.com/af/articolo/13660087/referencing-an-associated-activerecord-model-s-attributes-efficiently-rails-4
  ruby-on-rails  -  activerecord  -  rails-activerecord  -  foreign-key-relationship
StackOverflow StackOverflow

How to perform nested queries in ActiveRecord?

https://www.generacodice.com/af/articolo/13659787/how-to-perform-nested-queries-in-activerecord
  ruby-on-rails  -  activerecord
StackOverflow StackOverflow

How to query a model based on attribute of another model which belongs to the first model?

https://www.generacodice.com/af/articolo/13657375/how-to-query-a-model-based-on-attribute-of-another-model-which-belongs-to-the-first-model
  ruby-on-rails  -  activerecord  -  active-record-query
StackOverflow StackOverflow

ActiveRecord fetch loop into one statement — merge columns into one attribute

https://www.generacodice.com/af/articolo/13656508/activerecord-fetch-loop-into-one-statement-merge-columns-into-one-attribute
  sql  -  ruby-on-rails  -  postgresql  -  activerecord
StackOverflow StackOverflow

Association with multiple records in one form

https://www.generacodice.com/af/articolo/13652449/association-with-multiple-records-in-one-form
  ruby  -  ruby-on-rails  -  activerecord  -  associations  -  nested-forms
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Rails join with condition strange results

https://www.generacodice.com/af/articolo/13652104/rails-join-with-condition-strange-results
  ruby-on-rails  -  activerecord
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.new and .create method for Rails nested resource(HABTM relationship)

https://www.generacodice.com/af/articolo/13647484/new-and-create-method-for-rails-nested-resource-habtm-relationship
  ruby-on-rails  -  activerecord
StackOverflow StackOverflow

How to convert postgres column type from string to float

https://www.generacodice.com/af/articolo/13646461/how-to-convert-postgres-column-type-from-string-to-float
  ruby-on-rails  -  postgresql  -  activerecord  -  database-normalization  -  floating-point-conversion
StackOverflow StackOverflow

activemodel return json with associated model data

https://www.generacodice.com/af/articolo/13645378/activemodel-return-json-with-associated-model-data
  activerecord  -  rails-activerecord  -  ruby-on-rails-4  -  activemodel
StackOverflow StackOverflow
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