CODEWITHSUNDEEP
ruby-on-railsruby
Ranjan
Ranjan

Reputation: 96

Undefined method `merge' for Array

I am getting undefined method #merge however #merge method works good in the second block. What's wrong with Block 1?

# Block 1
network_posts = []
@networks.each do |network|
  network_posts << network.posts.as_json.merge('pic' => network.pic.url) 
end

# Block 2
network = []
@networks.each do |network|
  network << network.as_json.merge('pic' => network.pic.url) 
end

Upvotes: 0

Views: 4413

Answers (1)

tadman
tadman

Reputation: 211610

The as_json method is not obligated to return a Hash. It can return anything it wants, a string, a number, a boolean value, or even, as in this case, an array. Assuming it supports merge is a mistake.

Since this appears to be operating on a collection (network.posts) that will be an array. Merging that in isn't practical. You could merge in on each record's as_json result:

network.posts.map do |post|
   post.as_json.merge(...)
end

Upvotes: 2

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