undefined method `[]=' for #<ActiveRecord::Result:0x007ff34c76d508>

[dylanjha]

rails 4, out of the box running either:

• bundle exec rake db:data:dump
• bundle exec rake db:data:dump_dir

[wtfiwtz]

Same here...

[wtfiwtz]

    def self.unhash_records(records, keys)
      records.each_with_index do |record, index|
        records[index] = unhash(record, keys)
      end

      records
    end

The 'records' parameter is passed in from ActiveRecord (v4.0.0) as a ActiveRecord::Result, not an array

Cheers,

Nigel

[wtfiwtz]

Here's a diff from Rails 3.2.13 to 4.0.0:

Nigel-MBP:gems wtfiwtz$ diff activerecord-3.2.13/lib/active_record/result.rb activerecord-4.0.0/lib/active_record/result.rb
11c11
<     attr_reader :columns, :rows
---
>     attr_reader :columns, :rows, :column_types
13,16c13,17
<     def initialize(columns, rows)
<       @columns   = columns
<       @rows      = rows
<       @hash_rows = nil
---
>     def initialize(columns, rows, column_types = {})
>       @columns      = columns
>       @rows         = rows
>       @hash_rows    = nil
>       @column_types = column_types
26a28,53
>     alias :map! :map
>     alias :collect! :map
> 
>     # Returns true if there are no records.
>     def empty?
>       rows.empty?
>     end
> 
>     def to_ary
>       hash_rows
>     end
> 
>     def [](idx)
>       hash_rows[idx]
>     end
> 
>     def last
>       hash_rows.last
>     end
> 
>     def initialize_copy(other)
>       @columns   = columns.dup
>       @rows      = rows.dup
>       @hash_rows = nil
>     end
> 
32c59
<           # used as keys in ActiveRecord::Model's @attributes hash
---
>           # used as keys in ActiveRecord::Base's @attributes hash

Maybe the definition of the [] method is messing with the array dereferencing?

[wtfiwtz]

Okay, I added this to the following file .rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.0.0/lib/active_record/result.rb (ActiveRecord::Result) -

It fixes the issue...

    def []=(idx,value)
      hash_rows
      @hash_rows[idx] = value
     value
    end

Should we add this as a bug to the Rails 4.x project?

[wtfiwtz]

Oh look, a Rails 4.x pull request :)

#45

[ChrisZou]

👍

[dnrce]

This is addressed in #45.