Create platform icons for dashboard - plus nice fallback

[robintw]

🐞 Overview

The dashboard displays an icon for each platform. When I started using the dashboard today, it couldn't find the relevant icon for the platform type (Tug), so it displayed an error. I temporarily fixed this by forcing all icons to be the one that is currently present (called Warship.svg).

We should create an icon for each of the default platform types (listed below), plus alter the code to use a fallback icon (a ? maybe...) if it can't find an icon.

Naval - aircraft
Naval - frigate
Naval - auxiliary
Naval - destroyer
Naval - survey
Naval - minesweeper
Naval - patrol
Naval - aircraft carrier
Naval - submarine
Naval - miscellaneous
Merchant
Tug
Tanker
Law Enforcement
Pleasure Craft
Search and Rescue
Fishing Vessel
Passenger/Ferry
High Speed Craft

The icons for these need to be in SVG format, and be placed in pepys_timeline/static/image with exactly the same names as the platform types listed above - eg Naval - submarine.svg.

🔗 Feature

#602

🔢 Acceptance criteria

Correct icons display in the dashboard, even when a platform type without an icon is used.

[IanMayo]

The platform-types they're using have matured. I'll get a copy, and update tracstor with it. We can use that for our icon shopping list.

[IanMayo]

Here is the up-to-date list of platform types:

Attack_Craft
Fishing Vessel
High Speed Craft
Law Enforcement
Medical
Merchant
Naval - aircraft carrier
Naval - amphib
Naval - auxiliary
Naval - destroyer
Naval - ExCon
Naval - fixed wing
Naval - frigate
Naval - minesweeper
Naval - miscellaneous
Naval - patrol
Naval - rotary wing
Naval - submarine
Naval - survey
Naval/Military
Passenger/Ferry
Pleasure Craft
Search and Rescue
Tanker
Tug

[IanMayo]

Working with client to refine platform-types list, before we update icons

[IanMayo]

Updated set of platform types attached
Revised Platforms for Pepys.xlsx
.

[IanMayo]

Aah @robintw , we need to make some code changes to reflect these updates.

The defaults-resolver should use Naval - frigate rather than Warship.
Where we use Warship in unit tests we should also switch to Naval - frigate.

[IanMayo]

Aah, we also need to update the PlatformTypes in platform_types.csv. I'll do that.

[robintw]

@IanMayo Does the PR that closed this issue include a fallback icon for an unknown platform type? I couldn't see it in that PR's code, but it might have already been implemented elsewhere.

[IanMayo]

Thanks for chasing that up @robintw . No, it's my preference to use the "missing icon" image as a prompt to get the analysts to specify a Platform-Type for the platform in Pepys-Admin.