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The '''Special - Barcode''' [[Custom Field]] displays a barcode, which is an optical machine-readable representation of data.
This field type converts another field's value (numeric or alphanumeric depends on the coding system selected) into a barcode image. ==Field Illustrated==[[Image:Cf_sb_ex1.png]]<br />''In this image, the Barcode custom field is displaying the value in the '''Special Number''' field as a barcode (above)'' [[Image:Cf_sb_ex2.png]]<br />''In General Settings, the Values field is populated with the Custom Field ID for the Special Auto Number for this example (above)''
==Field Options==
All common options:<br />
[[Custom Fields - General Information #General_Settings|General Settings]]<br />
[[Custom Fields - General Information #Role Field Permissions and Status Field Permissions|Permissions & Availability]]<br />
[[Custom Fields - General Information #Classic Options|Classic Options]]<br />
For further information, please refer to [[Custom Fields – General Information]].<br /><br />
Options listed below are specific to this particular field type.
The '''Values''' field is used to specify:
* The Custom Field ID of the field that contains the integer or text string you wish to have converted to a barcode.
* The Code Type (also known as Symbology), which is the encoding format of the barcode.
* The width of the barcode.
'''customfieldid,codetype,showtext,width'''
* '''codetype'''= can be any of the Code Types listed below. If none is provided the default is CODABAR (which only accepts integer values)
ONECODE, POSTNET, PLANET, RM4SCC,
UPCA, UPCA_2, UPCA_5, UPCE, UPCE_2, UPCE_5
* '''showtext''' = whether or not to show the text underneath the barcode. Can be ''yes'' or ''no''. The default is ''yes''.
* '''width''' = The width of bars. The default value is 1.
'''Notes on Code Types'''
Many of the Code Types listed above have strictly defined rules about the number of digits, location of alphanumeric characters etc.
::: ''For example: EAN13 requires 13 integers; RM4SCC is for UK Postal Codes, and cannot have any spaces.''
::: If the Custom Field you are using as the source does not meet the requirements no barcode will be displayed.
==Value field Examples==
{| class="wikitable"
|-
||'''Value'''
||'''Interpreted As'''
|-
||12345
||''12345,CODABAR,yes,1''
|-
||12345,,,2
||''12345,CODABAR,yes,2''
|-
||12345,ISBN
||''12345,ISBN,yes,1''
|-
||12345,ISBN,,2
||''12345,ISBN,yes,2''
|}
===Height=Notes==
The '''Height''' of the barcode image can adjusted by the height settings of the [[Custom Field]].
(The '''Width''' is controlled by the '''Values''' section as described above).
<br /><br />
