"Near me" filter

[rupachup]

User story

As a register search user, I want to provide my current location as a filter so that results provided are near to me (assuming they are physical objects).

Acceptance criteria

• [ ] Users current location in lat/long is used if available and there is permission to use (eg geolocation on mobile/browser).
• [ ] Alternatively, user can provide their current location in the form of a full address.
• [ ] Filter will provide results sorted my closeness to the location specified (closest first).
• [ ] CMS User can config which columns of the dataset relate to geolocation eg. lat/long, postcodes, street address etc etc.

Research findings

From MSD research:

• This was clearly affected by the entering an address issue and as well testers commented that:
• Slider didn’t work (known issue)
• Why have a slider if cannot select in between the points?
• Distance is straight line and not always relevant

At a minimum... we could partially solve this by having a dropdown "region" filter using the already proposed dropdown filter component. If time is tight that might be enough value to get this out the door.

[robbieaverill]

So often websites implement the whole "use my current location" browser feature in combination with a text input saying something like "Find XYZ near..." or similar, e.g.:

Would this be treated like a filter facet on the frontend, e.g.:

Styleguide

If so, I guess we'd need a new CKANFilter model in the backend for this (similar to a Text filter probably).

[robbieaverill]

Ok I see that #11 is basically that, nevermind. I think these two tickets could probably be merged into one.