标签activerecord - 这是页8 - GeneraCodice

My model has a list of models. How do I load it from the database but limit the number of items in the list?

https://www.generacodice.com/cn/articolo/13572316/my-model-has-a-list-of-models-how-do-i-load-it-from-the-database-but-limit-the-number-of-items-in-the-list

  ruby-on-rails  -  activerecord

StackOverflow

how do I get a list of uniq values with at least 2 occurrences?

https://www.generacodice.com/cn/articolo/13570606/how-do-i-get-a-list-of-uniq-values-with-at-least-2-occurrences

  ruby-on-rails  -  activerecord

StackOverflow

Creating a table-less model with validation for registration, don't want to jam multiple models

https://www.generacodice.com/cn/articolo/13570138/creating-a-table-less-model-with-validation-for-registration-don-t-want-to-jam-multiple-models

  ruby-on-rails  -  activerecord  -  rails-models

StackOverflow

Rails Not In - Amistad Gem - Not selecting people that have blocked you or you have blocked

https://www.generacodice.com/cn/articolo/13567615/rails-not-in-amistad-gem-not-selecting-people-that-have-blocked-you-or-you-have-blocked

  ruby-on-rails  -  activerecord  -  ruby-on-rails-4  -  amistad

StackOverflow

ActiveRecord: perform a validation on method call only?

https://www.generacodice.com/cn/articolo/13565968/activerecord-perform-a-validation-on-method-call-only

  ruby  -  ruby-on-rails  -  validation  -  activerecord

StackOverflow

Query last row from 2012 + all rows from 2013 + first row from 2014 using Rails(ActiveRecord) - Best Practice

https://www.generacodice.com/cn/articolo/13563991/query-last-row-from-2012-all-rows-from-2013-first-row-from-2014-using-rails-activerecord-best-practice

  sql  -  sqlite  -  ruby-on-rails  -  activerecord

StackOverflow

Rails How to store signed decimals and how to parse a string for numbers in ruby

https://www.generacodice.com/cn/articolo/13557571/rails-how-to-store-signed-decimals-and-how-to-parse-a-string-for-numbers-in-ruby

  database  -  ruby  -  activerecord  -  ruby-on-rails-4

StackOverflow

User ID is NULL when saving record for logged in user

https://www.generacodice.com/cn/articolo/13554583/user-id-is-null-when-saving-record-for-logged-in-user

  mysql  -  ruby-on-rails  -  session  -  activerecord

StackOverflow

ActiveRecord::Base has_many fetch all for a given parent

https://www.generacodice.com/cn/articolo/13549945/activerecord-base-has-many-fetch-all-for-a-given-parent

  ruby  -  activerecord  -  rack  -  ruby-grape

StackOverflow

Rails group/having/count query

https://www.generacodice.com/cn/articolo/13542094/rails-group-having-count-query

  sql  -  ruby-on-rails  -  activerecord

StackOverflow

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