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| -rw-r--r-- | guides/source/association_basics.md | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/guides/source/association_basics.md b/guides/source/association_basics.md index e13f4b6aaf..e7408b5a7f 100644 --- a/guides/source/association_basics.md +++ b/guides/source/association_basics.md @@ -365,22 +365,6 @@ class CreateAssembliesAndParts < ActiveRecord::Migration[5.0] end ``` -As you can see we don't create the relevant model for `assemblies_parts` table, So We can't create the many-to-many record like this - -``` ruby -AssemblyPart.create(assembly: @assembly, part: @part) # => NameError: uninitialized constant AssemblyPart -``` - -If you want to create the relevant many-to-many record, you can use the below code - -``` ruby -@assembly.parts << @part -# Or -@part.assemblies << @assembly -``` - -They are equivalent. - ### Choosing Between `belongs_to` and `has_one` If you want to set up a one-to-one relationship between two models, you'll need to add `belongs_to` to one, and `has_one` to the other. How do you know which is which? |