Struct BulkActionResult 

#[non_exhaustive]
pub struct BulkActionResult {
    pub succeeded: usize,
    pub failed: Vec<BulkActionFailure>,
    pub message: Option<String>,
}

Outcome of a project-defined bulk action.

Two channels:

• The action itself failed (unknown action name, project code panicked into a Result::Err, DB connection lost). The dispatcher returns Err(...) from super::ModelAdmin::execute_bulk_action; the framework surfaces it as a 4xx / 5xx page.
• The action ran but some rows failed (one of three loans was already in the target state, an FK constraint rejected one of the writes). The dispatcher returns Ok(BulkActionResult) with failed populated; the framework emits a partial-success audit row and the operator sees a per-id failure summary.

#[non_exhaustive] so future additions (e.g. a warnings channel, a progress_handle for streaming) stay SemVer-safe.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

succeeded: usize

Number of rows the project successfully applied the action to.

failed: Vec<BulkActionFailure>

Per-row failure list. Empty for a clean run; one entry per row the project tried and couldn’t complete.

message: Option<String>

Operator-facing summary line. None lets the framework fall back to its default rendering ("<label>: <succeeded> of <total>").

Implementations

impl BulkActionResult

pub fn ok(succeeded: usize) -> Self

All succeeded rows applied cleanly; no failures.

pub fn partial(succeeded: usize, failed: Vec<BulkActionFailure>) -> Self

Mixed outcome — pair the survivor count with the per-id failure list.

pub fn total(&self) -> usize

Total rows the project attempted: succeeded + failed.len().

pub fn with_message(self, message: impl Into<String>) -> Self

Attach an operator-facing summary line. Builder-style for terse construction:

BulkActionResult::ok(12).with_message("Marked 12 loans overdue")

Trait Implementations

impl Clone for BulkActionResult

fn clone(&self) -> BulkActionResult

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BulkActionResult

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for BulkActionResult

fn default() -> BulkActionResult

Returns the “default value” for a type.