Adding and deleting items from a list (field)

[cpa...@yahoo.com]

This post has two mysteries for me

1. I can't pass the results from a macrocall to a javascript macro into the set value in the <$button> widget
The macro call returns true rather than the macro result no matter what I do.

2. The variables that I set using the <$set> widget don't act in the same way that the global variables like $(storyTiddler)$ and $(currentTiddler)$ act
This works
=========
<$button set="$(storyTiddler)$!!done" setTo=<<addThis>> > text </$button> [[$(currentTiddler)$ ]]
This doesn't
=========
<$set name="old" value="test">
<$button set="$(storyTiddler)$!!done" setTo=<<addThis>> > text </$button> [[$(old)$]]
</$set>

Here's the scenario:

I have a macro that removes one string from another
====================================================

exports.run = function(origstring, removestring) {
	return origstring.replace(removestring,"");
};

I have a tiddler with fields
====================
title:test
todos: one two three
done:  one two
text:
* {{one||templatename}}
* {{two||templatename}}
* {{three||templatename}}

I have a template that creates a button for each value in the [todos - done] and done fields
====================================================
title: templatename
text:
\define addThis() $(new)$ $(old)$

\define makebutton()

<$list filter="[title[$(storyTiddler)$]field:todos/$(currentTiddler)$/]">
    <$tiddler tiddler="$(currentTiddler)$" >
        <$list filter="[title[$(storyTiddler)$]!field:done/$(currentTiddler)$/]">
            <$set name="old" value={{$(storyTiddler)$!!done}}>
                <$set name="new" value="$(currentTiddler)$">
                   <$button set="$(storyTiddler)$!!done" setTo=<<addThis>> >O</$button> [[$(currentTiddler)$ ]]
                </$set>
            </$set>
        </$list>
    </$tiddler>
</$list>

<$list filter="[title[$(storyTiddler)$]field:done/$(currentTiddler)$/]">
    <$set name="old" value={{$(storyTiddler)$!!done}}>
        <$set name="new" value="Test" >
            <$tiddler tiddler="$(currentTiddler)$" >
                <$button set="$(storyTiddler)$!!done" setTo=<$macrocall $name="removestring " origstring = "$(old)$" removestring = "$(new)$" /> > ~~ $(currentTiddler)$ ~~ </$button>
<!-- This is where the error is
      The macro call sets the field to true rather than to $(old).replace($(new)$,"")
-->
            </$tiddler>
        </$set>
    </$set>
</$list>
\end

<$macrocall $name="makebutton" />

[Jeremy Ruston]

Hi cpaussa

On Wed, Aug 27, 2014 at 8:25 PM, cpaussa via TiddlyWiki <tiddl...@googlegroups.com> wrote:

This post has two mysteries for me

1. I can't pass the results from a macrocall to a javascript macro into the set value in the <$button> widget
The macro call returns true rather than the macro result no matter what I do.

2. The variables that I set using the <$set> widget don't act in the same way that the global variables like $(storyTiddler)$ and $(currentTiddler)$ act
This works
=========
<$button set="$(storyTiddler)$!!done" setTo=<<addThis>> > text </$button> [[$(currentTiddler)$ ]]
This doesn't
=========
<$set name="old" value="test">
<$button set="$(storyTiddler)$!!done" setTo=<<addThis>> > text </$button> [[$(old)$]]
</$set>

The problem with the second example is basically that variable substutions like $(old)$ are applied before the macro is executed. That means that the value of the variable "old" that gets substituted is the one that was in force at the point that the macro was invoked. By the time your <$set> widget is executed the macro content will have already been substituted.

The solution is to use an inner macro:

\define inner()

<$button set="$(storyTiddler)$!!done" setTo=<<addThis>> > text </$button> [[$(old)$]]

\end

\define outer()

<$set name="old" value="test">

<<inner>>

</$set>

\end

Hope that helps,

Best wishes

Jeremy

 

--
You received this message because you are subscribed to the Google Groups "TiddlyWiki" group.
To unsubscribe from this group and stop receiving emails from it, send an email to tiddlywiki+...@googlegroups.com.
To post to this group, send email to tiddl...@googlegroups.com.
Visit this group at http://groups.google.com/group/tiddlywiki.
For more options, visit https://groups.google.com/d/optout.

--
Jeremy Ruston
mailto:jeremy...@gmail.com

[cpa...@yahoo.com]

Yay! That works thanks!