TiddlyWiki5/editions/tw5.com/tiddlers/filters/field.tid

created: 20140410103123179
modified: 20150203184718000
tags: [[Filter Operators]] [[Common Operators]] [[Field Operators]] [[Negatable Operators]]
title: field Operator
type: text/vnd.tiddlywiki
caption: field
op-purpose: filter the input by field
op-input: a [[selection of titles|Title Selection]]
op-suffix: the name of a [[field|TiddlerFields]]
op-suffix-name: F
op-parameter: a possible value of field <<.place F>>
op-parameter-name: S
op-output: those input tiddlers in which field <<.place F>> has the value <<.place S>>
op-neg-output: those input tiddlers in which field <<.place F>> does <<.em not>> have the value <<.place S>>

If <<.place S>> is empty, <<.op field>> will match both of the following:

* tiddlers that don't contain field <<.place F>>
* tiddlers in which field <<.place F>> exists but has an empty value

The syntax of a [[filter step|Filter Step]] treats any unrecognised [[filter operator|Filter Operators]] as if it was the suffix to the <<.op field>> operator. See the <<.operator-examples "field" "examples">>.

<<.operator-examples "field">>
Update tiddler filter docs 2014-04-10 18:56:51 +00:00			`created: 20140410103123179`
Define operators via fields and a view template 2015-02-03 19:29:25 +00:00			`modified: 20150203184718000`
Overhaul the filter operator documentation: part 2 2015-01-24 21:18:44 +00:00			`tags: [[Filter Operators]] [[Common Operators]] [[Field Operators]] [[Negatable Operators]]`
Overhaul the filter operator documentation: part 1 2015-01-18 18:39:00 +00:00			`title: field Operator`
Update tiddler filter docs 2014-04-10 18:56:51 +00:00			`type: text/vnd.tiddlywiki`
Overhaul the filter operator documentation: part 1 2015-01-18 18:39:00 +00:00			`caption: field`
Define operators via fields and a view template 2015-02-03 19:29:25 +00:00			`op-purpose: filter the input by field`
			`op-input: a [[selection of titles\|Title Selection]]`
			`op-suffix: the name of a [[field\|TiddlerFields]]`
			`op-suffix-name: F`
			`op-parameter: a possible value of field <<.place F>>`
			`op-parameter-name: S`
			`op-output: those input tiddlers in which field <<.place F>> has the value <<.place S>>`
			`op-neg-output: those input tiddlers in which field <<.place F>> does <<.em not>> have the value <<.place S>>`
Overhaul the filter operator documentation: part 1 2015-01-18 18:39:00 +00:00
Define operators via fields and a view template 2015-02-03 19:29:25 +00:00			`If <<.place S>> is empty, <<.op field>> will match both of the following:`
Overhaul the filter operator documentation: part 1 2015-01-18 18:39:00 +00:00
Define operators via fields and a view template 2015-02-03 19:29:25 +00:00			`* tiddlers that don't contain field <<.place F>>`
			`* tiddlers in which field <<.place F>> exists but has an empty value`
Update tiddler filter docs 2014-04-10 18:56:51 +00:00
Overhaul the filter operator documentation: part 2 2015-01-24 21:18:44 +00:00			`The syntax of a [[filter step\|Filter Step]] treats any unrecognised [[filter operator\|Filter Operators]] as if it was the suffix to the <<.op field>> operator. See the <<.operator-examples "field" "examples">>.`
Update tiddler filter docs 2014-04-10 18:56:51 +00:00
Overhaul the filter operator documentation: part 1 2015-01-18 18:39:00 +00:00			`<<.operator-examples "field">>`