Tree replacement

Tree replacement is a feature that allows tracking multiple trees historically planted in the same place. It also simplifies the process of updating trees which were replaced in real life.

Feature status: planned.

User Experience

• When the user is in the Tree Mapper mode, and they click the (...) button on the tree page, the menu contains an option named "Replace tree".
• When that option is clicked, a form opens to add a new tree, with the following defaults:
  • coordinates are of the tree being replaced,
  • the planting year is set to current,
  • state is set to healthy.
• When the form is submitted, the old tree status is automatically set to "gone".
• On the tree page, there is a link to the tree which previously existed on this location.

Implementation details

• The "trees" table has an additional numeric fields "replaces" and "replaced_by", which contain ids of the previous/successor trees.
• When the form is submitted, there's an optional "replaces" field with the previous tree id.
• When the tree is saved, the old tree status is set to "gone".

Progress

This feature was implemented on April 26, 2025. See this commit.