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index option added for change_table migrations #23593
In case if we want to add a column into the existing table
Old behaviour in action:
New behaviour in action:
Exactly same behaviour is already exist for
@rafaelfranca you were the one with objection on this feature, are you still against of this? If not, I'll resolve the conflicts and then we can merge. I remember too many times I tried to add columns to tables with indices by forgetting that rails does not support this feature and it's really annoying. WDYT?
If there's still pushback, you could refactor this PR to raise an error if someone tries to add an index inline within a
Either way, there's something that needs to be added because its really unclear that this is currently unsupported.
In case if we want to add a column into the existing table with index on it, we have to add column and index in two seperate lines. With this feature we don't need to write an extra line to add index for column. We can just use `index` option. Old behaviour in action: ``` change_table(:languages) do |t| t.string :country_code t.index: :country_code end ``` New behaviour in action: ``` change_table(:languages) do |t| t.string :country_code, index: true end ``` Exactly same behaviour is already exist for `create_table` migrations.