[Rails] Re: Re: has_many question

Posted by Colin Law (Guest) on 2013-11-12 14:56
Please quote the previous message so that the thread can be followed.
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>Thanks. Did not know this. I see it in the form of a forum.


Unfortunately, a minisection can belong to many books, chapters, ect...
> so needs a join table and can't be flattened.

Posted by Colin Law (Guest) on 2013-11-12 14:56
That does not make sense, in your original post you implied
minisection belongs_to subsection, and so on up through the heirarchy.
Therefore any particular minisection is associated with only one
subsection, section, chapter and so on.


So, original question...
Having several tables related by "has_many" and would like to find the
"distant children".
eg:
Tables:
Subjects
Books
Chapters
Sections
Subsections
Minisections

They are all related heirarchichally, so book for example is related to
subjects and chapters the following way. All are related the same way.
Book
belongs_to :subject
has_many :chapters

So if I have the subject id, how can I find all the Minisections
belonging to that subject without adding all related table id's in each
table?

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