I'll also provide insights into how this site was made, as well as code examples and thoughts on how those could be further developed.
Feel free to leave questions or comments at the bottom of each post - I just ask people to create an account to filter out the spammers. You won't receive any unsolicited communication or find your email sold to a marketing list.
Create Thumbnails with Preserved Edges Using Python Image Library
If you ever had the annoyance of uploading an image to a website, only to have it cropped to fit a certain aspect ratio, then this article is for you. I walk through creating thumbnails where the entire image is displayed without cropping or stretching while meeting the thumbnail dimension requirements
I'll also go through how to add this as an image filter in Wagtail so you can create thumbnail renders for your metadata.
Creating Responsive Font Sizes Based on the Viewport
I'll show you how to linearly scale text between a set of minimum and maximum sizes when the width of the viewport changes, with the goal of making its behaviour at different screen sizes more predictable without the use of media queries and with only one line of CSS. Use the on-screen calculator to build your font sizes.
Wagtail: Extending the Draftail Editor Part 3 - Dynamic Text
I'll go through an example of adding inline Font Awesome icons as a proof of concept which could be easily adapted to show any dynamic information such as stock indices, exchange rates, availability of a resource etc..
Wagtail: Extending the Draftail Editor Part 2 - Block Styles
We walk through customising the blockquote style, add text alignment buttons to the editor as an example and then consider a different way to accomplish this outside of the editor with a StructBlock and why that might be preferable.
Wagtail: Extending the Draftail Editor Part 1 - Inline Styles
I'll include adding tag-based styling (such as <u>), how to add styled <span> tags and also demonstrate using both unicode glyphs and svg paths for your toolbar icon.
Configuring Rich Text Blocks for Your Wagtail Site
Add Heading Blocks with Bookmarks in Wagtail
In this example, I create a simple StreamBlock to add to your Streamfields that includes heading size, alignment and an optional bookmark. I use ChoiceBlocks for the field values, a custom template with some basic logic and also include some validation to ensure the entered bookmark is a valid slug.
This is a good example to work through if you're starting out with Wagtail and getting used to working with blocks and StreamFields.
Adding MapBox Blocks to Wagtail Stream Fields
Surprisingly, the safe way to do this requires far less coding and allows you to pass complex data structures without the faff and without exposing your site to unnecessary risk.
Upgrading to Wagtail 3.0
Embedding Shiny Apps for Interactive Data Analysis
Depending on the app, it can be built as a dashboard for reporting and analysis, extracting data or even running fully fledged machine learning algorithms based on your requirements.
This example walks you through creating an interactive Leaflet Map, publishing it to a Shiny Server and embedding it in your website.
Improve Response Times on Your NGINX Web Server
With a little basic configuration you can vastly improve the performance of your server and reduce delivery times. Here, I give an introduction to enabling HTTP/2, gzip compression and cache headers.