nested resources with filter

Question

this is my house model

has_many :taggings
has_many :tags, through: :taggings

def self.tagged_with(name)
    Tag.find_by_name!(name).houses
 end

end

this is my house controller

    def index
        if params[:tag]
          @houses = House.tagged_with(params[:tag])
    end
end

view:

- @houses.each do |house|
ect

This works fine...this filters out the houses with the current tag, like this /house/tag/tagname

But i implemented a nested resources so i need to change my view to this.

- @regions.each do |region|
      - region.houses.find_all do |house|

How can i use the filter tag in the new view? I thought this

- @regions.each do |region|
      - region.houses.find_tagged_with(params[:tags]) do |house|

but this wil not work...please help.

zkcro · Accepted Answer · 2013-04-23 06:49:51Z

1

Why not filter it the other way around? That is, instead of getting all the houses for a region and filtering it by tag, get all the houses for a tag and filter it by region:

def index
  @regions = Region.all # or whatever
  @houses = House.tagged_with(params[:tag])

  @regions.each do |region|
    @houses.where(region_id: region.id).each do |house|
      ...
    end
  end
end

edited Apr 23, 2013 at 6:49

answered Apr 23, 2013 at 6:41

zkcro

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Comments

Aditya Kapoor · Accepted Answer · 2013-04-23 06:09:51Z

0

This will not work becoz the tagged_with is defined in the class House and is not callable on the instance or any collection. The region.houses is an array (assuming region has_many houses) so it won't work on it. One way to do this is to use ActiveRecord::Relation

@regions.each do |region|
 - region.houses.where(:name => params[:tag).each do |house|

Refer to Rails guide to know more about it...

answered Apr 23, 2013 at 6:09

Aditya Kapoor

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1 Comment

Remco Over a year ago

thanks Aditya for the quick reply!. I test you're your solution but my output is null. I think because the tags is in an another table. class House < ActiveRecord::Base extend FriendlyId has_many :taggings end class Tag < ActiveRecord::Base has_many :houses, through: :taggings end How can i solve this?

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