CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3migration
dwmcc
dwmcc

Reputation: 1074

Rails Migration - Integer Column only contains values of '1'

In a rails project, we are attempting to migrate data from one table to another. When we create the original table, we use (snippet):

create_table :my_original_table do |t|
  #OTHER COLUMNS HERE
  t.integer :first_record_pub
end

Then, when we create the second table to migrate to, we use:

create_table :my_second_table do |t|
  #OTHER COLUMNS HERE
  t.integer :my_pub
end

and finally, when we migrate the actual data, we use:

original_value = MyOriginalTable.all
original_value.each do |s|
  new_first_record = MySecondTable.new
  #OTHER DATA MIGRATIONS HERE
  new_first_record.my_pub = s.first_record_pub
  new_first_record.save
end

All of the other columns that we migrate (the ones I commented out) migrate perfectly. However, in the migrated my_second_table, the my_pub column has some entries that are blank (expected, as some entries in the original table are blank), and the other entries simply have a value of '1'. The correct first_record_pub value was not correctly migrated over, for some reason.

Does anyone have any ideas as how to solve this issue? Thanks!

Upvotes: 0

Views: 190

Answers (1)

jefflunt
jefflunt

Reputation: 33954

Are you both creating a new column, and trying to move data into that column in the same migration? If so you, may either need to make a call to reset_column_information between creating the column and moving data to it, OR, separate the creation and moving of data into two separate migrations.

Upvotes: 1

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