Trimming a collection of AR objects?

Rails
1

I have a collection of acts_as_ferret search results that I need to trim
based on an attribute. I’ve been trying to iterate through the
collection but haven’t been able to make this work. Here is what I have
tried unsuccessfully:

@people.each {|person| person.clear if person.privacy_type == “private”}

Unfortunately Class Person does not respond to clear since it is an AR
object not a hash. Even if it were an hash, I feel like I need to
perform the operation on the COLLECTION of hashes @people anyways.

However, checking @people with <%= @person.class %> tells returns an
unhelpful ‘NilClass.’ How can I iterate through @people and delete all
the ones with privacy_type == “private?”

2

Taylor S. wrote:

However, checking @people with <%= @person.class %> tells returns an
unhelpful ‘NilClass.’ How can I iterate through @people and delete all
the ones with privacy_type == “private?”

Something like:

@people.find_all {|person| person.privacy_type != “private”}

See:
http://corelib.rubyonrails.org/classes/Enumerable.html#M002177

3

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Taylor S. wrote:

However, checking @people with <%= @person.class %> tells returns an
unhelpful ‘NilClass.’ How can I iterate through @people and delete all
the ones with privacy_type == “private?”

@people.delete_if{ |person| person.privacy_type == ‘private’ }

Look at the Ruby documentation for the Array class, and also Enumerable.

http://www.ruby-doc.org/core/classes/Array.html
http://www.ruby-doc.org/core/classes/Enumerable.html

Zach
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4

Damn, I was close. I didn’t have a good grasp on what was actually
inside @people which caused me to overlook using delete_if on it
directly. Thanks to both of you for your help.