{"record":{"id":"69d8db1d7e7d847b","repo":"SeaQL/sea-orm","slug":"failed-to-set-value-for-e-69d8db","errorCode":null,"errorMessage":"Failed to set value for {:?}: {e:?}","messagePattern":"Failed to set value for (.+?): (.+?)","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"src/entity/active_model.rs","lineNumber":45,"sourceCode":"///\n/// This makes ActiveModel ideal for partial updates: only the columns you\n/// touch end up in the generated `UPDATE`.\n#[async_trait::async_trait]\npub trait ActiveModelTrait: Clone + Debug {\n    /// The [`EntityTrait`] this ActiveModel belongs to.\n    type Entity: EntityTrait;\n\n    /// Take the [`ActiveValue`] of a column, leaving it as `NotSet`.\n    fn take(&mut self, c: <Self::Entity as EntityTrait>::Column) -> ActiveValue<Value>;\n\n    /// Read the [`ActiveValue`] of a column.\n    fn get(&self, c: <Self::Entity as EntityTrait>::Column) -> ActiveValue<Value>;\n\n    /// Set one column to `Set(v)`. Panics on type mismatch; prefer\n    /// [`try_set`](Self::try_set) when the value comes from untrusted input.\n    fn set(&mut self, c: <Self::Entity as EntityTrait>::Column, v: Value) {\n        self.try_set(c, v)\n            .unwrap_or_else(|e| panic!(\"Failed to set value for {:?}: {e:?}\", c.as_column_ref()))\n    }\n\n    /// Set one column to `Set(v)` only if `v` differs from the current value,\n    /// avoiding spurious `UPDATE` rewrites. Panics on type mismatch.\n    fn set_if_not_equals(&mut self, c: <Self::Entity as EntityTrait>::Column, v: Value);\n\n    /// Set one column to `Set(v)`, returning an error on type mismatch.\n    fn try_set(&mut self, c: <Self::Entity as EntityTrait>::Column, v: Value) -> Result<(), DbErr>;\n\n    /// Mark a column as `NotSet` so it is omitted from the next `INSERT` or\n    /// `UPDATE`.\n    fn not_set(&mut self, c: <Self::Entity as EntityTrait>::Column);\n\n    /// `true` if the column is currently in the `NotSet` state.\n    fn is_not_set(&self, c: <Self::Entity as EntityTrait>::Column) -> bool;\n\n    /// A fresh ActiveModel with every column `NotSet`.\n    fn default() -> Self;","sourceCodeStart":27,"sourceCodeEnd":63,"githubUrl":"https://github.com/SeaQL/sea-orm/blob/e29bcd1b417c41a553b386fe94511d7c64a1c8ec/src/entity/active_model.rs#L27-L63","documentation":"`ActiveModelTrait::set` wraps `try_set` and panics when the value's type doesn't match the column's expected type (e.g. assigning a `String` value to an `i32` column). It is the infallible convenience API for trusted values; the panic message includes the column reference and the underlying error. For untrusted input, SeaORM's docs direct you to `try_set`, which returns a `Result`.","triggerScenarios":"Calling `model.set(Column::Age, ActiveValue::set(\"not-a-number\"))` — or `set_from_json` feeding mismatched JSON types — where `try_set` returns a type-mismatch error.","commonSituations":"Deserializing user/JSON payloads into active models where a field is a string but the column is numeric; refactoring a column's Rust type without updating all `set` call sites; building models generically with `Value` of the wrong variant.","solutions":["Switch to `try_set` (or `set_from_json`) and handle the `Err` instead of panicking.","Match the value type to the column's Rust type in the `Model` (e.g. `Set(42i32)` not `Set(\"42\")`).","For JSON input, validate/convert field types before calling `set_from_json`.","Update all `set` call sites after changing a column's type in the entity definition."],"exampleFix":"// before\nmodel.set(user::Column::Age, ActiveValue::Set(\"thirty\".into())); // panics\n\n// after\nmodel.try_set(user::Column::Age, 30i32)?; // returns Result, handle mismatch","handlingStrategy":"try-catch","validationCode":"// validate JSON field types before set_from_json\nif !json.get(\"age\").map_or(false, |v| v.is_i64()) {\n    return Err(anyhow!(\"age must be an integer\"));\n}","typeGuard":"fn is_i32_value(v: &ActiveValue<sea_orm::Value>) -> bool {\n    matches!(v, ActiveValue::Set(sea_orm::Value::BigInt(_)) | ActiveValue::Set(sea_orm::Value::Int(_)))\n}","tryCatchPattern":"match model.try_set(user::Column::Age, value) {\n    Ok(()) => {},\n    Err(e) => return Err(anyhow!(\"invalid value for age: {e:?}\")),\n}","preventionTips":["Prefer try_set/set_from_json with error handling for untrusted input.","Match value types exactly to the column's Rust type.","Re-run compile+tests after changing any column type in an entity.","Validate/normalize JSON payloads before feeding them into active models."],"tags":["panic","type-mismatch","active-model","set"],"backgroundTag":"type-mismatch","analyzedSha":"e29bcd1b417c41a553b386fe94511d7c64a1c8ec","analyzedAt":"2026-09-10T11:31:52.468Z","contentChangedAt":"2026-09-10T11:31:52.468Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}