Remove (destroy) all variables in a Qlik Sense application

In QlikView, you had the ability to select multiple variables and delete them en-mass. In Qlik Sense, the UI permits you to undertake this activity one-by-one, and each takes two or three clicks.

This bookmarklet (Chrome only this time, not tried elsewhere) removes ALL variables from a Qlik Sense application by cheating the APIs used by the Qlik Sense client.

Demo showing addition of bookmark and destruction of variables in a Qlik Sense app
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Generating consistent Qlik Sense app icons

Application icons are prominently displayed throughout the Qlik Sense hub, and they are usually either the default blue, or some horrendously stretched icon that has no business being on an enterprise system.

This simple tool (packaged as an extension and accessible as a mashup) helps users generate consistent, appropriate app icons for use in their apps.

Without peering at the text, the default icons are rather generic
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Qlik Sense Repository Explorer (PostgreSQL extractor)

Forewarning – loading data directly from the repository is not recommended. Most requirements can be met through the QRS APIs.

There’s a lot of tables, all qualified – plus an index table. Smart search and insights are recommended!

This script loads all QRS data from the repository into an app. The code is below, or the latest is available on GitHub.

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Get Qlik Sense Object IDs quickly

If you’re doing anything but vanilla Qlik Sense development, it’s likely you’ll need to get to the object IDs at some point. You can do this by appending /options/developer to the end of the page URL and clicking on each object in turn, or using dev tools – but that’s slow.

This bookmarklet makes getting the object IDs fast in Chrome (and, begrudgingly, IE11).

Animated demo showing adding of bookmarklet to chrome and displaying of object IDs
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Adding CentOS Web Panel to a fresh CentOS 7 box

Revisiting an earlier post on configuring a LAMP server, and on a recent post on installing Webmin, this time I’m dropping CentOS Web Panel (CWP) onto a new CentOS 7 box.

So, on a fresh CentOS 7 1901-01 box on AWS, let’s begin.

# Set the hostname correctly before we start off, otherwise CWP will pick up the wrong name
hostname sub.host.com
# Update existing packages
sudo yum -y update
# Install wget and nano (as I like nano and wget is needed for the CWP install)
sudo yum -y install wget nano
# Reboot the box to sort out any updates requiring reboot
sudo reboot
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Adding Webmin to a fresh CentOS 7 Box

As a quick refresh from an earlier post, I’m going to use a new CentOS image with Webmin as the control panel of choice.

Happily, the only thing that’s changed in the documentation is the way the gpg key is imported – documentation is here: https://doxfer.webmin.com/Webmin/Installation

So, on a fresh CentOS 7 1901-01 box on AWS, let’s begin.

# Update all base packages
sudo yum -y update
# Install nano (my preferred text editor)
sudo yum -y install nano
# Edit the /etc/yum.repos.d/webmin.repo file
sudo nano /etc/yum.repos.d/webmin.repo
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An example of embedding Qlik Sense (mashup and APIs)

I’m often asked how to create mashups with Qlik Sense, and I strongly believe that it’s both easy and intuitive to leverage Qlik Sense APIs to build mashups…when you understand the options available to you.

To help new developers, I’ve put together a basic mashup using the Material Design Lite template. This example connects to a provided app and demonstrates several different ways of embedding Qlik Sense into a HTML site using just a little Javascript.

The mashup has four pages, one based on the default template and the other three focused on content
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AWS S3 Redirects with Cloudflare Page Rules – Fast and Free

A few weeks ago I used AWS S3 for 301 redirects, with Cloudflare on top to cache these requests, few as they were. This effectively maintains a handful of links which redirect somewhere useful, while directing all other traffic to this domain.

Stats from February for the site show 65% of requests were cached in the last week

The results are great! The switch to S3 was made on the 9th, and a Cloudflare page rule added on the 10th – at which point over 60% of requests became cached.

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