Ruby on Rails: Replace values in array with hash values (from database model)

Question

I need to replace the values from an array

tag_list = ['tag1', tag4, .. tag_n]

with the id's of a corresponding database model 'tags'

@tags = [{:id => '1', :name => 'tag1'}, {:id => '2', :name => 'tag2' ...}]

The desired output of the 'tag_list' should look like

tag_list_new=['1','4',..'n']

After trying and searching the web, I don't find any solution working for me.

Ps. I am relatively new to rails and really hope for a working answer, thanks in advance!

Bharath · Accepted Answer · 2017-03-04 09:13:30Z

1

  tag_list = ['tag1', tag4, .. tag_n]
  @tags = [{:id => '1', :name => 'tag1'}, {:id => '2', :name => 'tag2' ...}]

  tag_list_new = Array.new 
  tag_list.each do |a|
  @tags.each do |tag|
   if tag["name"].eql?(a) 
    tag_list_new << tag["id"]
   end 
  end 
end

answered Mar 4, 2017 at 9:13

Bharath

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