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minLevel1
maxLevel7

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When

When the value is(was) pre-populated by the system

When a value is NOT pre-populated by the system or was user created

creating

the https://lite-farm.atlassian.net/wiki/spaces/LITEFARM/pages/658309153/Unit+displays#Default-display-guidance should determine the value / unit combination

the user set unit preference should be used

(warning) What is the “user set unit preference”? Is it a record-to-record unit(a record has not been created on a creation view) or unit system (metric/imperial)?

read-only

the https://lite-farm.atlassian.net/wiki/spaces/LITEFARM/pages/658309153/Unit+displays#Default-display-guidance should be used
(warning) Once pre-populated value is modified, is it considered as a “user created” value? Currently, even if I change the unit to “ft2” and save, “ac” is still shown. Is it a bug?

the user set unit preference should be used





editing

the https://lite-farm.atlassian.net/wiki/spaces/LITEFARM/pages/658309153/Unit+displays#Default-display-guidance should be used

the user set unit preference should be used

  • automatic conversion - we will go with easier solution.
    (warning)We do not need to see automatic conversion at all for now? (how about the total area?)

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  1. User’s farm unit system preference is “imperial”. The user created a barn and total area was 50,000 acres. He switched the unit system to “metric”. (the record-to-record unit and the unit system setting don’t match)
    -> The total area should be displayed in (warning) ha as determined by the default display guidance. (not record-to-record unit?)

    Jira Legacy
    serverSystem JIRA
    serverId815f41e5-e5fb-3402-8587-82eccc3ffab0
    keyLF-2880

  2. User’s farm unit system preference is “imperial”. The user created a crop plan with planting depth 3 inches.
    -> The depth should be stored in (warning) XXX.
    (warning) “depth” is not in the https://lite-farm.atlassian.net/wiki/spaces/LITEFARM/pages/658309153/Unit+displays#Default-display-guidance. Is there a guidance for depth and spacing?

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proposed approach

alternative approach

backfill data

find wrong data and write a script

database

no change required

APIs

  • [POST] convert received values to “stored as” values for each endpoint and store (create a helper or middleware)

  • [GET] convert saved values to “display” values before sending to a client (create a helper or middleware)

  • add tests for each endpoint

no change required

frontend

  • remove logic from the Unit component (make it a presentation component)

  • create a hook to handle logic, and add comments to make it clear what the code does (this still needs to calculate what the values would be when stored in the database)

  • remove logic from the Unit component (make it a presentation component)

  • create a hook to handle logic, and add comments to make it clear what the code does (this includes data conversion when submitting or showing data)

  • write tests for each unit input

auto conversion
(optional)

DB: need migration (auto conversion property in the userFarm table)
(UI: modify the user setting view to set “auto conversion”)

backend: update the helper or middleware to take user setting into account

frontend: update the hook to take user setting into account

pros

  • some logic can be removed from the frontend

  • the logic is in one place and could avoid small errors for adding lines all over the files

  • no need to test APIs

cons

  • frontend still needs to take care of some calculations

  • need to update many APIs and their tests

  • QA needs to test APIs + UI

  • should be careful not to make the same mistakes (no more rework…)

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