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{{ transformations:ModifyJsonAction.png}}
======MODIFY JSON======
Category: Transform / Web \\

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=====Description=====
This action modifies aspects of a [[https://en.wikipedia.org/wiki/JSON|JSON]] object.  Commands this action can run are: Change property value, Add property, Delete property, Rename property, and Reformat JSON.

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=====Action settings=====
^Setting ^Description ^
|Column|Select the column that contains the JSON to be modified.|
|Command|Select the modification to run on the selected JSON.  Options:  //Change property value//, //Add property//, //Delete property//, //Rename property//, or //Format JSON//.  See below for the details of each command.|
|If the node doesn't exist| Choose how EasyMorph will handle cases when the selected node doesn't exist in the dataset.  Options:  //Fail// (the workflow halts execution with a warning) or //Ignore// (the workflow continues).|

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====Change property value settings====
Description:  Changes the value of the select JSON path (key).
^Setting^ Description  ^
|JSON Path|Select the path/key to change the value of.|
|Replace with<sup>*</sup>|Enter the value to be inserted.|
|The inserted values are dates|Check this option //on// if the values are dates.|
<sup>*</sup> Setting can be specified using a [[:parameters|parameter]].\\

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====Add property options====
Description:  Adds a new property under the selected Parent node.
^Option^ Description  ^
|Parent|Select the node to insert the new property under.|
|Node name<sup>*</sup>|Enter the name of the new property.|
|Node value<sup>*</sup>|Enter the value of the new property.|
|The inserted values are dates|Check this option //on// if the values are dates.|
<sup>*</sup> Setting can be specified using a [[:parameters|parameter]].\\

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====Delete property options====
Description:  Removes a property from the JSON in the selected column.
^Option^ Description  ^
|JSON Path|Select the node to remove the property from.|

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====Rename property options====
Description:  Renames a property in the selected JSON path.
^Option^ Description  ^
|JSON Path|Select the path to be renamed.|
|New name|Enter the new name of the selected path.|

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====Format JSON options====
Description:  Converts the format of the JSON text from a single-cell string to a tree structure, or the reverse.
^Option^ Description  ^
|Make readable|This option converts the JSON from a single-cell text value to a more readable nested structure.|
|Minimize size|This option converts the JSON from a nested structure to a single-cell text value.|

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=====Remarks=====
Wildcards like "$" (for root node), and "[*]" (for an array) can be used where JSON Paths and nodes need to be selected/entered.

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=====Examples=====
====Example #1====
>Change property value:  Change the "name" property's value from "Doug" to "Alex".

===Before (source table)===
<code>
  {
    "name":"Doug",
    "id":7,
    "dept":"Accounting"
  }
</code>

===After (result table)===
<code>
  {
    "name":"Alex",
    "id":7,
    "dept":"Accounting"
  }
</code>

===Action parameters===
>JSON Path is "name"
>Replace with "Alex"
>If the node doesn't exist: Fail

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====Exmaple #2====
>Add property: Add the new node "age".

===Before (source table)====
<code>
  {
    "name":"Doug",
    "id":7,
    "dept":"Accounting"
  }
</code>

===After (result table)===
<code>
  {
    "name":"Doug",
    "id":7,
    "dept":"Accounting",
    "age":50
  }
</code>

===Action parameters===
>Parent: $ (root node)
>Node name: age
>Node value: 50
>If the parent node doesn't exist: Fail


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====Example #3====
>Delete property: Remove the "id" property.

===Before (source table)===
<code>
  {
    "name":"Doug",
    "id":7,
    "dept":"Accounting"
  }
</code>

===After (result table)===
<code>
  {
    "name":"Doug",
    "dept":"Accounting"
  }
</code>

===Action parameters===
> JSON Path: id
>If the node doesn't exist: Fail

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====Example #4====
>Rename property: Rename the "id" property to "ident".

===Before (source table)===
<code>
  {
    "name":"Doug",
    "id":7,
    "dept":"Accounting"
  }
</code>

===After (result table)===
<code>
  {
    "name":"Doug",
    "ident":7,
    "dept":"Accounting"
  }
</code>

===Action parameters===
> JSON Path: id
> Replace with: ident
>If the node doesn't exist: Fail

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====Example #5====
>Format JSON (minimize size): Consolidate the JSON structure into a single line.

===Before (source table)===
<code>
  {
    "name":"Doug",
    "id":7,
    "dept":"Accounting"
  }
</code>

===After (result table)===
<code>
{"name":"Doug","ident":7,"dept":"Accounting"}
</code>

===Action parameters===
> Minimize size

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====Example #6====
>Format JSON (Make readable): Expand the single-line JSON into a multi-line format.

===Before (source table)===
<code>
{"name":"(insert name)","ident" 7,"dept":"Accounting"}
</code>

===After (result table)===
<code>
  {
    "name":"Doug",
    "id":7,
    "dept":"Accounting"
  }
</code>

===Action parameters===
> Make readable

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=====Community examples=====
  * [[https://community.easymorph.com/t/example-constructing-json/1279/5|Community example: Constructing JSON]]

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===== See also =====
  * [[transformations:extractjson|Extract JSON properties]]
  * [[transformations:parsejson|Parse JSON]]
  * [[transformations:splitjsonarray|Split JSON array]]
  * [[syntax:functions:isjson|Functions:  IsJson()]]