add find and replace to json extract

CHANGELOG.md

@@ -3,6 +3,9 @@
 ## Bug Fixes
 [PR #91](https://github.com/fivetran/dbt_fivetran_utils/pull/91) updates dispatch from `{{ dbt_utils.<macro> }}` to `{{ dbt.<macro> }}` for additional [cross-db macros](https://docs.google.com/spreadsheets/d/1xF_YwJ4adsnjFkUbUm8-EnEL1r_C-9_OI_pP4m4FlJU/edit#gid=1062533692) missed in the `fivetran_utils.union_relations()` macro.
 
+## Updates
+[PR #92](https://github.com/fivetran/dbt_fivetran_utils/pull/92) updates the `pivot_json_extract` macro to include additional formats of fields to be pivoted out into columns. Specifically, allowing for fields with `.` to be replaced with `_`, for metadata variables to accept dictionaries in addition to strings, and for aliasing of fields.
+
 # dbt_fivetran_utils v0.4.0
 
 ## Bug Fixes

README.md

@@ -238,7 +238,7 @@ This macro builds off of the `json_extract` macro in order to extract a list of
 ```
 **Args:**
 * `string` (required): Name of the field which contains the json object.
-* `list_of_properties`  (required): List of the fields that you want to extract from the json object and pivot out into columns. Any spaces will be replaced by underscores in column names.
+* `list_of_properties`  (required): List of the fields that you want to extract from the json object and pivot out into columns.
 
 ----
 ### string_agg ([source](macros/string_agg.sql))

macros/pivot_json_extract.sql

@@ -1,9 +1,13 @@
 {% macro pivot_json_extract(string, list_of_properties) %}
 
 {%- for property in list_of_properties -%}
+{%- if property is mapping -%}
+replace( {{ fivetran_utils.json_extract(string, property.name) }}, '"', '') as {{ property.alias if property.alias else property.name | replace(' ', '_') | replace('.', '_') | lower }}
 
+{%- else -%}
 replace( {{ fivetran_utils.json_extract(string, property) }}, '"', '') as {{ property | replace(' ', '_') | lower }}
 
+{%- endif -%}
 {%- if not loop.last -%},{%- endif %}
 {% endfor -%}