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 FileMaker Pro Custom Functions

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ExtractData ( XML ; Attribute ; Instance )

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  Average rating: 3.8  (99 votes)
  Discuss this Custom Function

Andy Knasinski, NRG Software
http://www.nrgsoft.com/

Extract specific data out of XML formatted text without using FileMaker's built-in XML functionality.

Sample Input:
ExtractData ( "<xml>
<InvNum>123</InvNum>
<InvNum>456</InvNum>
<InvNum>789</InvNum>
</xml>" ; "InvNum" ; 2 )
Sample Output:
456


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed

Description:

Use this function to search for and return the specified instance of a field from any valid XML source.

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

Discuss:

5 most recent comments | Show all 9 comments

Dosent work!

Try:
<SalesRankings>
<SalesRank>
<ProductCategoryId>music_display_on_website</ProductCategoryId>
<Rank>1981</Rank>
</SalesRank>
<SalesRank>
<ProductCategoryId>1033930</ProductCategoryId>
<Rank>50</Rank>
</SalesRank>
<SalesRank>
<ProductCategoryId>1033714</ProductCategoryId>
<Rank>90</Rank>
</SalesRank>
<SalesRank>
<ProductCategoryId>1033792</ProductCategoryId>
<Rank>172</Rank>
</SalesRank>
</SalesRankings>

with key SalesRank.
It will match on SalesRankings!!!

Jim, Newyork
April 06, 2016 9:29pm

Try this one:


Let ([

XML_Length = Length ( XML );
Attribute_Length = Length ( Attribute );

PosStartTag = If ( Position ( XML ; "<" & Attribute & " " ; 1 ; 1 ) > 0;
Position ( XML ; "<" & Attribute & " "; 1; Instance );
Position ( XML ; "<" & Attribute & ">"; 1; Instance ) );

TagName = If ( Position ( XML ; "<" & Attribute & " " ; 1 ; 1 ) > 0;
Middle ( XML ; PosStartTag ; Position ( XML ; ">" ; PosStartTag ; 1 ) +1 - PosStartTag );
"<" & Attribute & ">");

PosEndTag = Position ( XML ; "</" & Attribute & ">"; PosStartTag; 1 );

TheResult = Case(
IsEmpty ( XML ) or
IsEmpty ( Attribute ) or
(PosStartTag = 0 ); // Attribute not in XML at all
"";
Middle (XML; PosStartTag + Length ( TagName ); PosEndTag - (PosStartTag + Length ( TagName )))
)

];

TheResult

)

Jim, Newyork
April 06, 2016 11:51pm

Nice function, now, Im a noob... just wonder where I have to insert it... Can anyone help?

Ricardo, Brazil
February 26, 2017 4:56pm

Ricardo - You can go to File->Manage->Custom Functions... in FMP Advanced to add custom functions

Andy K, Milwaukee, WI
March 30, 2017 10:30am

THANKS. A lot. Works wonderfully and made my FM life a lot simpler !
Instantly working. Great, great job and saved me hours. And thanks to this absolute best FM site.

Tigrou83, FRANCE
May 15, 2017 3:08pm

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