Removed not-used code
Push limit to type objects

Columns and injected types no longer have any conditionals based on the
format of SQL type strings! Hooray!
Merge pull request #15259 from sgrif/sg-push-limit-to-types

Push limit to type objects
Don't recurse infinitely when calling non-existent method on super
fix test from 7537057888d2d63c3b6c2019d5828bc445fbd6c9
Merge pull request #15257 from jetthoughts/remove_redundant_code

Removed not used code
use symbol keys for path_parameters
just return path parameters
pass the instantiated request to the find_routes method
stop using PARAMETERS_KEY, and use the accessor on the request object

this decouples our code from the env hash a bit.
resolved reorder issue in rails active record guide