Remove an item from Data Tiddler dictionary

[MagoArcade]

I'm writing a data tiddler editor, just with add and delete. Can;'t get delete working. Code below:

!Edit Relationship Types
----
Existing Types:


<$list filter="[[$:/_DTrelTypes]indexes[]sort[title]]" variable="key">


</$list>


''Add New:''
<$edit-text tiddler="$:/temp/EditRelTypes" field="newreltype" tag="input" default="" class='tc-edit-texteditor' placeholder='Type a new relationship type here'/>


<$vars newrelvar={{$:/temp/EditRelTypes!!newreltype}}>


<$button>Add Type


<$action-listops $tiddler="$:/_DTrelTypes" $index=<<newrelvar>> $subfilter=<<newrelvar>>/>


</$button>


<$button>Delete


<$action-listops $tiddler="$:/_DTrelTypes" $subfilter="[remove[<<newrelvar>>]]"/>


</$button>


deltiddlr: <<deltiddler>>


</$vars>

I'm happy to have my key and value the same (essentially just need a list)

Would be grateful for a steer

[Mark S.]

I notice that your  action-listops for deletion doesn't specify an index attribute. Could that be the problem?

[MagoArcade]

I tried it with both - no difference.

[Mark S.]

The listops widget was made for adding items to a list field or index value. But since you're adding

items like  myindex=myindex, there isn't really a list field to manipulate. Or rather, the list will always

contain just one item.

Using the action-listop widget with the $filter attribute, I think you could set the $index value to empty. But you

can't remove the index entry entirely.

For deleting the entire item from the dictionary, which seems to be what you want, you can use

the action-setfield widget instead. The code below seems to work.

Good luck!

!Edit Relationship Types
----
Existing Types:


<$list filter="[[$:/_DTrelTypes]indexes[]sort[title]]" variable="key">


</$list>


''Add New:''
<$edit-text tiddler="$:/temp/EditRelTypes" field="newreltype" tag="input" default="" class='tc-edit-texteditor' placeholder='Type a new relationship type here'/>


<$vars newrelvar={{$:/temp/EditRelTypes!!newreltype}}>


<$button>Add Type


<$action-listops $tiddler="$:/_DTrelTypes" $index=<<newrelvar>> $subfilter=<<newrelvar>>/>


<

/$button>


<$button>Delete


<$action-setfield $tiddler="$:/_DTrelTypes" $index=<<newrelvar>> />


</$button>


deltiddlr: <<deltiddler>>


</$vars>

[MagoArcade]

Brilliant, Mark - I'd never have thought of that given that it's using field manipulation on essentially tiddler text. That's some esoteric TiddlyWIki knowledge you got there!

Thanks again.