# Transform complex structures to array of objects **URL:** \ **Category:** Data Transformers\ **Created:** [February 7, 2024, 1:58pm UTC](https://forum.alumio.com/t/transform-complex-structures-to-array-of-objects/965 "2024-02-07T13:58:22Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![daniellefers](https://forum.alumio.com/user_avatar/forum.alumio.com/daniellefers/32/1563_2.png) [@daniellefers](https://forum.alumio.com/u/daniellefers)\ **Post date:** [February 7, 2024, 1:58pm UTC](https://forum.alumio.com/t/transform-complex-structures-to-array-of-objects/965/1 "2024-02-07T13:58:23Z")
Hi, I would like to transform complex structures to an simple array with objects. In the dataset below, I want each value in `values.*.*.data` to be an new entry in the result array, combined with keys and values from their parent object. **Input:** ```auto { "values": { "image_type_1": [ { "locale": "en_US", "data": [ "image_type1_en_1.jpg", "image_type1_en_2.jpg" ] } ], "image_type_2": [ { "locale": "en_US", "data": [ "image_type2_en_1.jpg", "image_type2_en_2.jpg" ] }, { "locale": "nl_NL", "data": [ "image_type2_nl_1.jpg", "image_type2_nl_2.jpg" ] } ] } } ``` **Desired output:** ```auto { "result": [ { "type": "image_type_1", "locale": "en_US", "asset": "image_type1_en_1.jpg" }, { "type": "image_type_1", "locale": "en_US", "asset": "image_type1_en_2.jpg" }, { "type": "image_type_2", "locale": "en_US", "asset": "image_type2_en_1.jpg" }, { "type": "image_type_2", "locale": "en_US", "asset": "image_type2_en_2.jpg" }, { "type": "image_type_2", "locale": "nl_NL", "asset": "image_type2_nl_1.jpg" }, { "type": "image_type_2", "locale": "nl_NL", "asset": "image_type2_nl_2.jpg" }, ] } ``` Any help would be appreciated! ---
**Author:** ![Gugi](https://forum.alumio.com/user_avatar/forum.alumio.com/gugi/32/236_2.png) [@Gugi](https://forum.alumio.com/u/Gugi)\ **Post date:** [February 12, 2024, 3:14pm UTC](https://forum.alumio.com/t/transform-complex-structures-to-array-of-objects/965/2 "2024-02-12T15:14:28Z")
Hi @daniellefers There are a few steps need to be done to achieve your objective. First, as it will require a chain of multiple entity transformers, you should put [Chain multiple entity transformers](https://forum.alumio.com/t/chain-multiple-entity-transformers/256) as the root of your entity transformer. ![image](https://alumio-forum.s3.dualstack.eu-central-1.amazonaws.com/uploads/original/2X/f/f6ecae3fc72ddf8671f5381fb9d85ad2717de8c4.png) Next, as you can see that the image types (`image_type_1` and `image_type_2`) are keys in the associative array `values`. In order to move it to a value, you should use [Move data between accessors](https://forum.alumio.com/t/move-data-between-accessors/284). ![image](https://alumio-forum.s3.dualstack.eu-central-1.amazonaws.com/uploads/original/2X/0/055fd63d147acf8cee83bbf6c8946a8ce53a44af.png) Based on the above transformer, the image types are now a value of `type` key and the previous value will be set as a value of `data` property. ```auto { "values": [ { "type": "image_type_1", "data": [ { "locale": "en_US", "data": [ "image_type1_en_1.jpg", "image_type1_en_2.jpg" ] } ] }, { "type": "image_type_2", "data": [ { "locale": "en_US", "data": [ "image_type2_en_1.jpg", "image_type2_en_2.jpg" ] }, { "locale": "nl_NL", "data": [ "image_type2_nl_1.jpg", "image_type2_nl_2.jpg" ] } ] } ] } ``` Then, you should transform the `data` array that contains the image filenames into an array of objects. You can use [Move using a pattern](https://forum.alumio.com/t/move-using-a-pattern/285) to do so. ![image](https://alumio-forum.s3.dualstack.eu-central-1.amazonaws.com/uploads/original/2X/2/2cb9d266a07e59d278b7eadbfe9920cc9d56cfbb.png) It will result in the below entity, where each image filename is now a value of key `asset` in each object of the array. ```auto { "values": [ { "type": "image_type_1", "data": [ { "locale": "en_US", "data": [ { "asset": "image_type1_en_1.jpg" }, { "asset": "image_type1_en_2.jpg" } ] } ] }, { "type": "image_type_2", "data": [ { "locale": "en_US", "data": [ { "asset": "image_type2_en_1.jpg" }, { "asset": "image_type2_en_2.jpg" } ] }, { "locale": "nl_NL", "data": [ { "asset": "image_type2_nl_1.jpg" }, { "asset": "image_type2_nl_2.jpg" } ] } ] } ] } ``` You should now copy the image type to each asset object we created above. Since you have more than one image type in each object of array `values`, and you may have more in the actual case, you should use [Node, transform nodes](https://forum.alumio.com/t/node-transformer/348) to loop into the `values` array. Then, use [Recursively copy values to children](https://forum.alumio.com/t/recursively-copy-values-to-children/287). ![image](https://alumio-forum.s3.dualstack.eu-central-1.amazonaws.com/uploads/original/2X/a/a2a4753b2c5099a83f327cf49d31cab327ef08ab.png) Now, each object that contains asset (image filename) will have the image type as well. ```auto [ { "values": [ { "type": "image_type_1", "data": [ { "locale": "en_US", "data": [ { "asset": "image_type1_en_1.jpg", "type": "image_type_1" }, { "asset": "image_type1_en_2.jpg", "type": "image_type_1" } ] } ] }, { "type": "image_type_2", "data": [ { "locale": "en_US", "data": [ { "asset": "image_type2_en_1.jpg", "type": "image_type_2" }, { "asset": "image_type2_en_2.jpg", "type": "image_type_2" } ] }, { "locale": "nl_NL", "data": [ { "asset": "image_type2_nl_1.jpg", "type": "image_type_2" }, { "asset": "image_type2_nl_2.jpg", "type": "image_type_2" } ] } ] } ] } ] ``` The remaining value to be copied is `locale`, which requires the same way as the previous one but with different pattern of the [Node, transform nodes](https://forum.alumio.com/t/node-transformer/348) and the pattern of the Recursively copy values to children. ![image](https://alumio-forum.s3.dualstack.eu-central-1.amazonaws.com/uploads/original/2X/d/dde66d3fff9360ce3fedd52040f5f8c87f5b192f.png) Then, you will have all the data you need in each object. ```auto { "values": [ { "type": "image_type_1", "data": [ { "locale": "en_US", "data": [ { "asset": "image_type1_en_1.jpg", "type": "image_type_1", "locale": "en_US" }, { "asset": "image_type1_en_2.jpg", "type": "image_type_1", "locale": "en_US" } ] } ] }, { "type": "image_type_2", "data": [ { "locale": "en_US", "data": [ { "asset": "image_type2_en_1.jpg", "type": "image_type_2", "locale": "en_US" }, { "asset": "image_type2_en_2.jpg", "type": "image_type_2", "locale": "en_US" } ] }, { "locale": "nl_NL", "data": [ { "asset": "image_type2_nl_1.jpg", "type": "image_type_2", "locale": "nl_NL" }, { "asset": "image_type2_nl_2.jpg", "type": "image_type_2", "locale": "nl_NL" } ] } ] } ] } ``` However, since you need all the objects merged into an array, you will need a help from JMESPath to do so. ![image](https://alumio-forum.s3.dualstack.eu-central-1.amazonaws.com/uploads/original/2X/7/71b104117bfe61048d2fcb987552d52bb6f496f8.png) Finally, you will have a new property called `result` that contains the array of objects you wants to achieve. ```auto { "result": [ { "asset": "image_type1_en_1.jpg", "type": "image_type_1", "locale": "en_US" }, { "asset": "image_type1_en_2.jpg", "type": "image_type_1", "locale": "en_US" }, { "asset": "image_type2_en_1.jpg", "type": "image_type_2", "locale": "en_US" }, { "asset": "image_type2_en_2.jpg", "type": "image_type_2", "locale": "en_US" }, { "asset": "image_type2_nl_1.jpg", "type": "image_type_2", "locale": "nl_NL" }, { "asset": "image_type2_nl_2.jpg", "type": "image_type_2", "locale": "nl_NL" } ] } ``` We hope our explanation is clear to you. Please give it a try and let us know if you find any issues.