Rails/WhereExists allowing where + exists on multi-line chain

[chulkilee]

Is your feature request related to a problem? Please describe.

If there is multiple (especially) multiline where, merging only the last into exists doesn't improve the readability.

Example

User
  .joins(:profile)
  .where(profile: { kind: "bar" }
  .where.not(attr1: "foo")
  .where(attr2: "bar")
  .exists?

Currently it enforces

User
  .joins(:profile)
  .where(profile: { kind: "bar" }
  .where.not(attr1: "foo")
  .exists?(attr2: "bar")

Describe the solution you'd like

Allow exists at the end of multi-line chain, even after .where

Describe alternatives you've considered

I may merge some where clauses, but not all of them (e.g. with not for instance) - so having both where and exists? looks strange to me.

# group all possible where (except not)
User
  .joins(:profile)
  .where.not(attr1: "foo")
  .exists?(profile: { kind: "bar" }, attr2: "bar")

# put joins and related where at one line
User
  .joins(:profile).where(profile: { kind: "bar"})
  .where.not(attr1: "foo")
  .exists?(attr2: "bar")

Also.. I prefer to have single exists? over where.exists? for simple cases, so using EnforcedStyle: where is not an option for me.