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Currently in draft. Requires technical input from Eleanor and context input from Skevi.This page is for application designers who need to configure specific operations that will change data in the stream.

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Creating a Stream Item Action

To create a stream item action:

  • either open a stream's properties. In the Stream Item Action ??Change Action section, click 
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     .
  • or open the repository branch for a stream. Right-click Stream Item Actions and select 
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    .

In both cases, PhixFlow opens a new stream item action properties tab.

Stream Item Action Properties

 Use the following properties to configure the stream item action.

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Basic Settings

FieldDescription
NameEnter the name of the stream item action.

Stream Item Action

Select the type of operation:

  • None 
  • Insert
  • Delete
  • Update

The remaining options available in Basic Settings depend on the type of operation you select.

Note

You cannot undo or reverse a stream item action that deletes data records from a stream.

If you want users to have the option to undo a change:

  1. Configure a stream item action to Update rather than delete.
  2. The update marks the records as 'deleted', for example in a "status" attribute.
  3. Set up a scheduled archive task. Configure it to archive (delete) records set that have had status set to 'delete' in a specified time period, e.g. 48h hours.

This gives users time to reinstate records that have been deleted by mistake. The user will need to manually update the status attribute for the record to remove 'deleted'. If you do not  want your users to see deleted records, you can filter them from any views.


Attributes to Update

This option is only available where Stream Item Action is Insert or Update.

This section has a toolbar with standard buttons and 

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The grid  contains a list of attributes on which the stream item action will operate. If the grid is empty, the stream item action will operate on all attributes in the stream. To add stream attributes to the grid, in the toolbar, click 

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. PhixFlow opens the list of stream attributes. Drag attributes into the grid.

To create a new attribute, click 

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. To edit an attribute that is listed in the grid, double-click its name. In both cases, PhixFlow opens the Stream Item Action Attribute properties.

The grid displays information from the action attribute:

  • Order: The order in which the rules are evaluated.
  • Name: The backing stream.
  • Expression: Any expression that has been defined for the attribute.

To remove an attribute from the grid, use the

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 in the toolbar.

Filter Type

This option is only available where Stream Item Action is Delete or Update.

Select an option from the drop-down list.

The action will only apply to the records that:

  • Selected Items - the user has selected on the dashboard from which the action was initiated, unless the Target View is specified.
  • Edited Items - that the use has updated on the view from which the action was initiated, unless the Target View is specified.
  • View Filter - that are currently displayed  on the view from which the action was initiated unless the Target View is specified.
  • Action Filter - that the filter defined in the action has retrieved.
  • Dragged Items - the user is dragging, for a drag-and-drop action.
  • Drop Target Items - the user is dropping something onto, for a drag-and-drop action.
Target View

This option is only available where Stream Item Action is Delete or Update.

Enter a stream view name.

Where Filter Type is one of Selected Items, Edited Items or View Filter Filter, PhixFlow takes the records will be taken from the named view, not the view from which the action was initiated. The user may have started the action on a different view.

Condition

This option is only available where Stream Item Action is Delete or Update and Filter Type is Action Filter.

Create a filter to specify the records to which the action applies.

Expressions in this filter can refer items on the view or dashboard from which this action was initiated, for example:

  • form fields
  • context parameters
  • attributes from any selected record

Configure this filter in the same way that you would a pipe filter.

Copy Values By Name

This option is only available where Stream Item Action is Insert or Update.

Specify what to do if the dashboard from which the action was initiated includes more attributes than those listed in the properties grid Attributes to Update.

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If this is unticked then only  to update only those attributes listed in Attributes to Update will be updated. All other attributes will be unchanged, or null if the action is insertare unchanged. For insert actions, nothing is added (null).

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 For each stream attribute, if it is not  to update only those attributes are not listed in Attributes to Update

PhixFlow looks for a form field or stream view attribute with the same name as the attribute. If it finds a match, PhixFlow updates the attribute will be updated to the value of the form field or stream view attribute with the same name as the stream attribute. If there is no match it will not be updatedPhixFlow does not find a match, it does not update the attribute value.

Maximum Items Expr.

This option is only available where Stream Item Action is Delete or Update.

Enter an expression that evaluates to a number. The number limits how many records that records (items) this action can affect. If this action is applied applies to more than this the maximum number of items, PhixFlow updates only the specified number of items will be updated and ignores the rest will be ignored. Items are ordered as . Phixflow reads records in the  order they are listed in the stream view from which the items are selected from.

Minimum Items Expr.

This option is only available where Stream Item Action is Delete or Update.

Enter an expression that evaluates to a number. The number specifies the minimum number of records that the action must be applied to for this action to run. If fewer than this number of items the action will return an error and will not run.

ACTION WORKFLOWS

Data Sources

Not sure what this is for. A data source itself is just a name. This is for the new workflows.

This section has a toolbar with standard buttons and 

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Optionally create data sources that affect this stream item action how ??.

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