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FilterValues, part 2

Sometimes it happens that the real value of a blog posting emerges in the comments section. Such was the case last time, when Paul Jansen posted an elegant little workaround to remedy a performance issue with the FilterValues function. Paul’s workaround is deserving of its own demo, and that’s what we’re going to look at… Continue reading FilterValues, part 2 View the full article

Kevin Frank

Kevin Frank

 

FilterValues

Today we’re going to do some experiments with the FilterValues function, which takes two return delimited lists for input… FilterValues ( textToFilter ; filterValues ) …and produces the intersection of the two lists as output. With the above in mind, when the function was first introduced back in 2004, I assumed that these two statements… Continue reading FilterValues View the full article

Kevin Frank

Kevin Frank

 

Ordering Elements within JSON Objects

Introduction If you’ve generated JSON objects via FileMaker, you’re likely aware of the disparity between the order in which you specify the elements, and the order in which they subsequently appear (i.e., alphabetized by key name). As I wrote two years ago (in Thinking About JSON, Part 2)… Both JSONSetElement and JSONFormatElements will automatically alphabetize… Continue reading Ordering Elements within JSON Objects View the full article

Kevin Frank

Kevin Frank

 

GetFieldName Revisited

Long time readers of this blog will be familiar with the following scenario — An ExecuteSQL code example is given, e.g., ExecuteSQL ( " SELECT SUM ( net_amount ) FROM cc_transactions WHERE batch_date = ? AND batch_region = ? AND card_type = ? " ; "" ; "" ; $theDate ; $theRegion ; $theCard )… Continue reading GetFieldName Revisited View the full article

Kevin Frank

Kevin Frank

 

Virtual Portal, part 2

[Note: several hours after posting this article I realized the “Hide Object” calc could be streamlined. Screen shot and demo have been updated to reflect this.] Demo file: virtual-portal-v2a.zip (requires FM 18 or later) This is a quick follow up to the Virtual Portal article I posted the other day. As you may recall, the… Continue reading Virtual Portal, part 2 View the full article

Kevin Frank

Kevin Frank

 

Virtual Portal

Demo file: virtual-portal.zip This is a follow-up to last month’s article on virtual list, and this time we’re going to explore a way to use virtual list in a portal. Imagine you have built a system where a Company can be a parent of a Mill, Refinery, Estate, or another Company. Each of these entities… Continue reading Virtual Portal View the full article

Kevin Frank

Kevin Frank

 

Virtual List Simplified

Demo file: virtual-list-simplified.zip Note 1: The example in today’s article and demo file is intentionally very basic. Note 2: The demo is self-populating to keep the data current, so the values you see in the screen shots will not exactly match those you encounter in the demo. Recently I had the pleasure of discussing virtual… Continue reading Virtual List Simplified View the full article

Kevin Frank

Kevin Frank

 

Table Of Contents for FileMaker Hacks

As 2019 draws to a close, I am mildly astonished to note that FileMaker Hacks is now nine years old. As promised in my recent conversation with Jeremy Brown, and in response to a number of  reader requests, here, for the first time, is a comprehensive table of contents (as of December 2019). While some… Continue reading Table Of Contents for FileMaker Hacks View the full article

Kevin Frank

Kevin Frank

 

2-Column Magic Value Lists, part 2

Disclaimer: the techniques shown in this article are provided on an as-is basis. Use with appropriate caution and at your own risk. Introduction This is a quick follow-up to last month’s article on 2-Column Magic Value Lists, and, to avoid repetition, will assume the reader is familiar with that material. A colleague pointed out that… Continue reading 2-Column Magic Value Lists, part 2 View the full article

Kevin Frank

Kevin Frank

 

2-Column Magic Value Lists

Disclaimer: the techniques shown in this article are provided on an as-is basis. Use with appropriate caution and at your own risk. Acknowledgements: today’s article would not have been written without the inspiration provided by Bruce Robertson, John Ahn (FM 12 ExecuteSQL Unconference Session), Andries Heylen (Magic Value Lists), Marcel Pinyero (How to Extend FileMaker… Continue reading 2-Column Magic Value Lists View the full article

Kevin Frank

Kevin Frank

 

FM18: JSON.InsertArrayElement

Disclaimer: the technique shown in this article is provided on an as-is basis. Use with appropriate caution and at your own risk. Demo file: JSON-Array-Custom-Functions.zip (requires FM 18 or later) Have you ever noticed that FileMaker does not provide a JSON function to insert a new element into an existing array? For example, given this… Continue reading FM18: JSON.InsertArrayElement View the full article

Kevin Frank

Kevin Frank

 

FM18: JSON.UpdateArrayElement

Disclaimer: the technique shown in this article is an attempt to work around an annoyance that can crop up when using FileMaker’s native JSONSetElement function. Use with appropriate caution and at your own risk. Acknowledgement: I owe a debt of gratitude to Paul Jansen for many illuminating JSON-related discussions over the last year or so.… Continue reading FM18: JSON.UpdateArrayElement View the full article

Kevin Frank

Kevin Frank

 

Fixed in 18: List + GetNthRecord Bug

Recently I was working in FM 17 and ran into an unexpected bug. My use case was more complex than this, but the following bare bones demo illustrates the problem. Demo file: List+GetNthRecordBug.zip Given two tables joined via a standard primary-key-to-foreign-key equijoin relationship… This works as expected. You might think you could get rid of… Continue reading Fixed in 18: List + GetNthRecord Bug View the full article

Kevin Frank

Kevin Frank

 

New in FM 18: While, part 2

Today we’re going to dig a little deeper into the new-in-18 While function, and to avoid repetition, will assume readers are familiar with last month’s article on SetRecursion and While. We’ll examine some new examples ranging from basic to advanced, talk about the circumstances under which While can use variables previously declared via Let, and […] View the full article

Kevin Frank

Kevin Frank

 

New in FM 18: SetRecursion and While

Author’s note: Inevitable comparisons will be drawn between the new While function and the venerable CustomList custom function, which I wrote about at length several years ago. Preliminary testing indicates that CustomList is faster under certain circumstances and While is faster under others. In my opinion, both of them belong in your developer tool kit. […] View the full article

Kevin Frank

Kevin Frank

 

Magic Portals

Today we’re going to look at a design pattern I’ve recently been using to accommodate a client requirement: to be able to view and edit a parent, all related children, and all related grandchildren via a single “flattened” interface. Demo file: magic-portals.zip (requires FM 16 or later) Some Background Information Invoices received from vendors are […] View the full article

Kevin Frank

Kevin Frank

 

Bill of Materials

Editor’s note: Geoff Gerhard of Creative Solutions is one of those “quiet” developers who has been helpfully sharing his knowledge in online FileMaker forums for more than 20 years. I personally have benefited enormously from his expertise, and am pleased to feature his first appearance as a guest author here on FileMaker Hacks. Demo file: […] View the full article

Kevin Frank

Kevin Frank

 

Disabling New Window

Today I want to talk about a potential problem lurking in a small percentage of FileMaker solutions, and discuss various options for mitigating it. As you may know, there are three ways to display a new window… Via the New Window script step Via the Go To Related Record script step Manually via Window > […] View the full article

Kevin Frank

Kevin Frank

 

Creating and Using Invisible Window IDs

Editor’s note: I first became aware of Paul Jansen when I licensed his FMTools in the late 1990s, and I finally had the pleasure of meeting him last June at dotFMP after 20 years of online and voice communication. It’s an honor and a privilege to welcome him to FileMaker Hacks as a guest author. […] View the full article

Kevin Frank

Kevin Frank

 

Tips ’n’ Tricks, part 3

It’s been a few years since we last had a tips ‘n’ tricks article here at FileMaker Hacks… long enough for some new items to accumulate in the old developer bag of tricks. (If you like this sort of thing, you may also want to check out part 1 and part 2.) Some of these […] View the full article

Kevin Frank

Kevin Frank

 

Faux Subsummaries with Variable Height Rows

Recently we’ve looked at two methods to generate a “faux” subsummary to address a shortcoming of FileMaker native subsummaries… namely that in a multipage report you can have orphaned entries at the top of a given page with no indication of what parent entity they belong to. The methods were documented here: Conditional Summary Report […] View the full article

Kevin Frank

Kevin Frank

 

Faux Subsummaries via JSON + Virtual List

Today we’re going to take another look at a challenge we discussed last time (in Conditional Summary Report Header)… namely how to cajole FileMaker into displaying a subsummary, or a reasonable facsimile thereof, at the top of a report page when items in the group begin on an earlier page. Demo file: Faux Subsummaries via […] View the full article

Kevin Frank

Kevin Frank

 

Conditional Summary Report Header

Recently I received an email wondering… When printing a multipage report sorted by a sub-summary, is there a way to display the sub-summary heading on the following page when it breaks across two or more pages? There are various approaches one might take, and I actually buried one of those approaches inside an article + […] View the full article

Kevin Frank

Kevin Frank

 

Thinking About JSON, part 3

This a quick followup to last month’s part 2, because today I want to to dig a little deeper into JSONSetElement and take a closer look at the first argument: As I wrote last time… Part of what makes JSONSetElement so powerful is that it can be used both to create new entries, and to […] View the full article

Kevin Frank

Kevin Frank

 

Thinking About JSON, part 2

This is a follow up to Thinking About JSON, part 1. Last time we were primarily concerned with learning about JSON paths and structures, and reading JSON. This time around we’re going to look at creating and manipulating JSON. Demo file: winery-json.zip (If the above screen shot looks familiar you have a good memory, because […] View the full article

Kevin Frank

Kevin Frank

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