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https://github.com/paper-trail-gem/paper_trail.git
synced 2022-11-09 11:33:19 -05:00
4ef8a0bfed
- Introduces a uniform error class, UnsupportedColumnType - Simplifies the built-in serializers (paper_trail/serializers) Since 9.2.0, when `object_changes_adapter` was introduced, if someone must use a text column, and still wants to use these queries, they must write an `object_changes_adapter`. AFAIK, no one has ever done this. The only public adapter I know of, paper_trail-hashdiff, only supports json/b columns. It's also theoretically possible that, after `where_object_changes` dropped support for text columns, someone wrote a custom serializer (see `PaperTrail.serializer=`). AFAIK, no one has done that either. Such a technique was never documented under [6.b. Custom Serializer](https://github.com/paper-trail-gem/paper_trail#6b-custom-serializer)
36 lines
1.1 KiB
Ruby
36 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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module PaperTrail
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module Serializers
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# An alternate serializer for, e.g. `versions.object`.
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module JSON
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extend self # makes all instance methods become module methods as well
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def load(string)
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ActiveSupport::JSON.decode string
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end
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def dump(object)
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ActiveSupport::JSON.encode object
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end
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# Returns a SQL LIKE condition to be used to match the given field and
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# value in the serialized object.
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def where_object_condition(arel_field, field, value)
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# Convert to JSON to handle strings and nulls correctly.
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json_value = value.to_json
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# If the value is a number, we need to ensure that we find the next
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# character too, which is either `,` or `}`, to ensure that searching
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# for the value 12 doesn't yield false positives when the value is
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# 123.
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if value.is_a? Numeric
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arel_field.matches("%\"#{field}\":#{json_value},%").
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or(arel_field.matches("%\"#{field}\":#{json_value}}%"))
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else
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arel_field.matches("%\"#{field}\":#{json_value}%")
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end
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end
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end
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end
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end
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