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EDIT: ************* Note that this OP relates to the original version of the module. Version 0.0.19 is now published to the modules library at https://processwire.com/modules/fieldtype-measurement/. As well as many bug fixes and small enhancements, it now also includes an 'in-field' interactive conversion feature and dependent-select in the config. See the readme on the module page for up-to-date details and see this post for a bit of a demo. ************* This fieldtype and inputfield bundle was built for storing measurement values within a field, rendering them in a variety of formats and converting them to other units or otherwise modifying them via the API. The API consists of a number of predefined functions, some of which include... render() for rendering the measurement object, valueAs() for converting the value to another unit value, convertTo() for converting the whole measurement object to different units, and add() and subtract() for for modifying the stored value by the value (converted as required) in another measurement. In the admin the inputfield includes a checkbox (which can be optionally disabled) for converting values on page save. For an example if a value was typed in as centimeters, the unit was changed to metres, and the page saved with this checkbox selected, said value would be automatically converted so that e.g. 170 cm becomes 1.7 m. A simple length field using Fieldtype Measurement and Inputfield Measurement. Combination units (e.g. feet and inches) are also supported. Please note that this module is 'proof of concept' at the moment - there are limited units available and quite a lot of code tidying to do. More units will be added shortly. See the GitHub at https://github.com/MetaTunes/FieldtypeMeasurement for full details and updates.

OK - I did this and it seems to work OK. @teppowas rather quick off the mark with the PW weekly report - I still have to add a lot of units and do some tidying (and remove debugging lines in case people don't have Tracy!). I will also add some notes about what I learnt doing this as the existing tutorials (such as @bernhard's) don't seem to cover fieldtypes which use the database. Support thread started at

ProcessWire is an excellent framework for building just about anything, with great tools for permissions, input fields, and creating data structures. With the Combo and Table profields, it's possible to handle just about any data. These fieldtypes show the potential of ProcessWire to handle SQL tables in a more 'traditional' SQL table format, which leads to one area I wonder might have potential for a new feature. In addition to ProcessWire, I also do some work with ASP.Net Core, and one of the nice features it has is the ability to work with existing SQL databases, so that you can either build your models in the framework, or use existing SQL Tables. While working with any SQL data is possible in ProcessWire, it's a lot more hands on, with less built-in support. InputFields and FieldTypes are separate, and there's no reason why an inputField can't be used for data input for any kind of data, and indeed there are some modules that use inputFields to edit custom table data. What would be an amazingly useful addition to ProcessWire would be a module that allows mapping of inputFields to fields in an arbitrary SQL table without modifying the structure of the table itself. This is something the open source Directus project does by using metadata tables to store data about to display input for existing SQL tables, without touching their structure, but documentation isn't great for that project. I think ProcessWire has all the plumbing in place to enable this kind of functionality, and the Combo fieldtype gets pretty close, but still requires the combo table records to be associated with a ProcessWire page. Obviously, existing SQL tables won't automatically map to pages, which means directly accessing them on the front-end via URL automatically isn't possible, but often this isn't required as they may be for backend use only, or for consumption within a ProcessWire page. The recent support for URL/Path hooks though, means that if there is a need to directly access existing SQL on the front end via URL, it should be possible to create a hook to do so. I think adding the ability to create backend data entry for existing SQL tables would fully complete the ProcessWire philosophy of getting out of your way and not making assumptions about your content. It's currently already best of class in terms of doing this regard to front end presentation, but it's still a bit opinionated about data structures at the back end. This is absolutely fine if you're building a web app from scratch, and works really well in most cases, but there are times where being able to quickly incorporate existing data structures would be useful. To be clear, this isn't a replacement for the existing pages model, as that would be a huge and unecessary task to completely re-engineer ProcessWire, but rather an enhancement that can sit alongside all the good stuff that's already in ProcessWire so that it's possible to get ProcessWire to handle existing SQL data tables on the backend as neatly as it already does with its own data.

Hey @Pete! You can limit types by template out of the box - look at the template overrides. There is a nice module by @Robin S that can do more than that. Is you need to restrict in part of the page tree, you will need to reach for hooks. You can look at the ones Robin uses in his module.

@bernhard It might be something to do with your server's root certificate. Have a look at https://letsencrypt.org/docs/dst-root-ca-x3-expiration-september-2021/ You can check if your root cert has expired or not by checking it here https://www.ssllabs.com/ssltest/ Update: I just ran your domain name and it looks like your DST root cert expired (per Let's Encrypt article above)