DataTiddlers. Delete properties depending its value

[Luis Gonzalez]

I have a wiki to manage a warehouse and a datatiddler with all the things:

mouse: 2

keyboard: 5

monitor: 8

flopy: 0

LPT-printer: 0

etc

etc

etc

...

I want to clean this datatiddler deleting all properties with a value of 0. They are obsolete things.

I can show this 0-properties with this code:

<$list filter="[[$:/Luis/warehouse]indexes[]]">
<$set name="val" filter="[[$:/Luis/warehouse]getindex<currentTiddler>]">
<$list filter="[<val>match[0]]" variable="otra">
<<currentTiddler>>: <<val>><br/>
</$list>
</$set>
</$list>

But, how can I loop over all zero-properties to delete them from the warehouse data-tiddler?

[TonyM]

Your last sentence contradicts the second sentence.

I believe you need to use action setfield with no value. Untested by me.

Regards
Tony

[Mohammad]

Hi Luis,

This is one solution!

\define deleteIdx()

<$button class="tc-btn-invisible tc-tiddlylink">&#10005;

<$action-setfield $tiddler="$:/Luis/warehouse" $index=<<currentTiddler>> />

</$button>

\end

<$list filter="[[$:/Luis/warehouse]indexes[]]">

<$set name="val" filter="[[$:/Luis/warehouse]getindex<currentTiddler>]">

<$list filter="[<val>match[0]]" variable="otra">

<<currentTiddler>>: <<val>> <<deleteIdx>><br/>

</$list>

</$set>

</$list>

--Mohammad

[Luis Gonzalez]

ok. This is a good solution but I need a new macro than automatically loop over all properties and delete them if they are 0

[Mohammad Rahmani]

Simply put the button before list widget

With setactionfielf where you display index value

On Tue, Sep 17, 2019, 6:43 PM Luis Gonzalez <kew...@gmail.com> wrote:

ok. This is a good solution but I need a new macro than automatically loop over all properties and delete them if they are 0

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[Mohammad]

Hi Luis,

 This is a complete solution as a set of macro!

\define deleteIdx()
<$button class="tc-btn-invisible tc-tiddlylink">&#10005;

<$action-setfield $tiddler=<<__dataTiddler__>> $index=<<idx>> />
</$button>
\end

\define deleteAllzeros()
<$button>Delete all &#10005;
<$list filter="[<__dataTiddler__>indexes[]]" variable=idx>
<$list filter="[<__dataTiddler__>getindex<idx>match[0]]" variable="zidx">
<$action-setfield $tiddler=<<__dataTiddler__>> $index=<<idx>> />
</$list>
</$list>
</$button>
\end

\define show-idx-val(dataTiddler)
<<deleteAllzeros>><br>
<$list filter="[<__dataTiddler__>indexes[]]" variable=idx>
<$list filter="[<__dataTiddler__>getindex<idx>match[0]]" variable="zidx">
<<idx>>: 0 <<deleteIdx>><br/>
</$list>
</$list>
\end


<<show-idx-val "$:/Luis/warehouse">>

[Luis Gonzalez]

I couldn't imagine that you can put an action widget inside a list widget. I thought that a list widget is only for show a list of tiddlers.

Thanks!!.

My goal is to be as good with tiddlywiki as you.