Grow from Small Simple Steps Forward
summary
Fixes for the active_record_import gem target a concrete bug: PostgreSQL returns default integers as strings (e.g. '0'), Rails enums (since 4.1) expect integer values, and a version check using to_i hides 4.1 so enums never get defined in tests. One attempted fix swaps read_attribute_before_type_cast for type-casting reads, another replaces assignment with model[k] = v which uses write_attribute and makes tests pass; the PRs merge but contribute only a few lines while revealing AR adapters, type casting, and default-value behavior.
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