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medusa-store/docs/content/references/services/classes/DiscountService.md
Shahed Nasser 6f1b49af03 chore: merge docs from master to develop (#3650) 
* Fix issue on fixed total amount discount when using includes tax (#3472)

The calculation of the fixed discount amount breaks when having includes_tax setting active, due to the line item totals are incorrect and returning everything as 0, thus the totalItemPercentage will be Infinitiy due to the division by a subtotal of 0

* chore: Add missing changeset for @medusajs/medusa

* feat(medusa): Improve performance of Products domain (#3417)

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* chore(release): v1.7.14

* chore(docs): Generated Docs Announcement Bar (automated) (#3489)

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* fix(medusa): EventBusService.emit using Redis mock (#3491)

* Fix eventBusService.emit using redis mock

* revert gitignore

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* unit test add redis_url

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* chore(docs): Generated Services Reference (automated) (#3490)

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* docs: publish restructure (#3496)

* docs: added features and guides overview page

* added image

* added version 2

* added version 3

* added version 4

* docs: implemented new color scheme

* docs: redesigned sidebar (#3193)

* docs: redesigned navbar for restructure (#3199)

* docs: redesigned footer (#3209)

* docs: redesigned cards (#3230)

* docs: redesigned admonitions (#3231)

* docs: redesign announcement bar (#3236)

* docs: redesigned large cards (#3239)

* docs: redesigned code blocks (#3253)

* docs: redesigned search modal and page (#3264)

* docs: redesigned doc footer (#3268)

* docs: added new sidebars + refactored css and assets (#3279)

* docs: redesigned api reference sidebar

* docs: refactored css

* docs: added code tabs transition

* docs: added new sidebars

* removed unused assets

* remove unusued assets

* Fix deploy errors

* fix incorrect link

* docs: fixed code responsivity + missing icons (#3283)

* docs: changed icons (#3296)

* docs: design fixes to the sidebar (#3297)

* redesign fixes

* docs: small design fixes

* docs: several design fixes after restructure (#3299)

* docs: bordered icon fixes

* docs: desgin fixes

* fixes to code blocks and sidebar scroll

* design adjustments

* docs: restructured homepage (#3305)

* docs: restructured homepage

* design fixes

* fixed core concepts icon

* docs: added core concepts page (#3318)

* docs: restructured homepage

* design fixes

* docs: added core concepts page

* changed text of different components

* docs: added architecture link

* added missing prop for user guide

* docs: added regions overview page (#3327)

* docs: added regions overview

* moved region pages to new structure

* docs: fixed description of regions architecture page

* small changes

* small fix

* docs: added customers overview page (#3331)

* docs: added regions overview

* moved region pages to new structure

* docs: fixed description of regions architecture page

* small changes

* small fix

* docs: added customers overview page

* fix link

* resolve link issues

* docs: updated regions architecture image

* docs: second-iteration fixes (#3347)

* docs: redesigned document

* design fixes

* docs: added products overview page (#3354)

* docs: added carts overview page (#3363)

* docs: added orders overview (#3364)

* docs: added orders overview

* added links in overview

* docs: added vercel redirects

* docs: added soon badge for cards (#3389)

* docs: resolved feedback changes + organized troubleshooting pages (#3409)

* docs: resolved feedback changes

* added extra line

* docs: changed icons for restructure (#3421)

* docs: added taxes overview page (#3422)

* docs: added taxes overview page

* docs: fix sidebar label

* added link to taxes overview page

* fixed link

* docs: fixed sidebar scroll (#3429)

* docs: added discounts overview (#3432)

* docs: added discounts overview

* fixed links

* docs: added gift cards overview (#3433)

* docs: added price lists overview page (#3440)

* docs: added price lists overview page

* fixed links

* docs: added sales channels overview page (#3441)

* docs: added sales overview page

* fixed links

* docs: added users overview (#3443)

* docs: fixed sidebar border height (#3444)

* docs: fixed sidebar border height

* fixed svg markup

* docs: added possible solutions to feedback component (#3449)

* docs: added several overview pages + restructured files (#3463)

* docs: added several overview pages

* fixed links

* docs: added feature flags + PAK overview pages (#3464)

* docs: added feature flags + PAK overview pages

* fixed links

* fix link

* fix link

* fixed links colors

* docs: added strategies overview page (#3468)

* docs: automated upgrade guide (#3470)

* docs: automated upgrade guide

* fixed vercel redirect

* docs: restructured files in docs codebase (#3475)

* docs: restructured files

* docs: fixed eslint exception

* docs: finished restructure loose-ends (#3493)

* fixed uses of backend

* docs: finished loose ends

* eslint fixes

* fixed links

* merged master

* added update instructions for v1.7.12

* docs: fixed discount details (#3499)

* docs: fix trailing slash causing 404 (#3508)

* docs: fix error during navigation (#3509)

* docs: removed the gatsby storefront guide (#3527)

* docs: removed the gatsby storefront guide

* docs: fixed query value

* chore(docs): Removed Docs Announcement Bar (automated) (#3536)

Co-authored-by: shahednasser <shahednasser@users.noreply.github.com>

* fix(medusa): Variant update should include the id for the listeners to be able to identify the entity (#3539)

* fix(medusa): Variant update should include the id for the listeners to be able to identify the entity

* fix unit tests

* Create brave-seahorses-film.md

* docs: fix admin redirects (#3548)

* chore(release): v1.7.15

* chore(docs): Generated Docs Announcement Bar (automated) (#3550)

Co-authored-by: olivermrbl <olivermrbl@users.noreply.github.com>

* chore(docs): Generated Services Reference (automated) (#3551)

Automated changes by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action

Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>

* chore: updated READMEs of plugins (#3546)

* chore: updated READMEs of plugins

* added notice to plugins

* docs: added a deploy guide for next.js storefront (#3558)

* docs: added a deploy next.js guide

* docs: fix image zoom

* docs: fixes to next.js deployment guide to vercel (#3562)

* chore(workflows): Enable manual workflow in pre-release mode (#3566)

* chore(docs): Removed Docs Announcement Bar (automated) (#3598)

Co-authored-by: shahednasser <shahednasser@users.noreply.github.com>

* fix(medusa): Rounding issues on line item adjustments (#3446)

* chores(medusa): Attempt to fix discount rounding issues

* add migration

* update entities

* apply multipler factor properly

* fix discount service

* WIP

* fix rounding issues in discounts

* fix some tests

* Exclude raw_discount_total from responses

* fix adjustments

* cleanup response

* fix

* fix draft order integration

* fix order integration

* fix order integration

* address feedback

* fix test

* Create .changeset/polite-llamas-sit.md

* remove comment

---------

Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>

* chore(workflows): Add release notification (#3629)

---------

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Co-authored-by: olivermrbl <oliver@mrbltech.com>
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Co-authored-by: Carlos R. L. Rodrigues <37986729+carlos-r-l-rodrigues@users.noreply.github.com>
Co-authored-by: shahednasser <shahednasser@users.noreply.github.com>
Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>
2023-03-31 09:34:38 +02:00

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# Class: DiscountService
Provides layer to manipulate discounts.
**`Implements`**
## Hierarchy
- `TransactionBaseService`
↳ **`DiscountService`**
## Constructors
### constructor
• **new DiscountService**(`__namedParameters`)
#### Parameters
| Name | Type |
| :------ | :------ |
| `__namedParameters` | `Object` |
#### Overrides
TransactionBaseService.constructor
#### Defined in
[packages/medusa/src/services/discount.ts:69](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L69)
## Properties
### \_\_configModule\_\_
• `Protected` `Optional` `Readonly` **\_\_configModule\_\_**: `Record`<`string`, `unknown`\>
#### Inherited from
TransactionBaseService.\_\_configModule\_\_
#### Defined in
[packages/medusa/src/interfaces/transaction-base-service.ts:10](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/interfaces/transaction-base-service.ts#L10)
___
### \_\_container\_\_
• `Protected` `Readonly` **\_\_container\_\_**: `any`
#### Inherited from
TransactionBaseService.\_\_container\_\_
#### Defined in
[packages/medusa/src/interfaces/transaction-base-service.ts:9](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/interfaces/transaction-base-service.ts#L9)
___
### \_\_moduleDeclaration\_\_
• `Protected` `Optional` `Readonly` **\_\_moduleDeclaration\_\_**: `Record`<`string`, `unknown`\>
#### Inherited from
TransactionBaseService.\_\_moduleDeclaration\_\_
#### Defined in
[packages/medusa/src/interfaces/transaction-base-service.ts:11](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/interfaces/transaction-base-service.ts#L11)
___
### customerService\_
• `Protected` `Readonly` **customerService\_**: [`CustomerService`](CustomerService.md)
#### Defined in
[packages/medusa/src/services/discount.ts:56](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L56)
___
### discountConditionRepository\_
• `Protected` `Readonly` **discountConditionRepository\_**: typeof `DiscountConditionRepository`
#### Defined in
[packages/medusa/src/services/discount.ts:60](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L60)
___
### discountConditionService\_
• `Protected` `Readonly` **discountConditionService\_**: [`DiscountConditionService`](DiscountConditionService.md)
#### Defined in
[packages/medusa/src/services/discount.ts:61](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L61)
___
### discountRepository\_
• `Protected` `Readonly` **discountRepository\_**: typeof `DiscountRepository`
#### Defined in
[packages/medusa/src/services/discount.ts:55](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L55)
___
### discountRuleRepository\_
• `Protected` `Readonly` **discountRuleRepository\_**: typeof `DiscountRuleRepository`
#### Defined in
[packages/medusa/src/services/discount.ts:57](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L57)
___
### eventBus\_
• `Protected` `Readonly` **eventBus\_**: [`EventBusService`](EventBusService.md)
#### Defined in
[packages/medusa/src/services/discount.ts:66](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L66)
___
### featureFlagRouter\_
• `Protected` `Readonly` **featureFlagRouter\_**: `FlagRouter`
#### Defined in
[packages/medusa/src/services/discount.ts:67](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L67)
___
### giftCardRepository\_
• `Protected` `Readonly` **giftCardRepository\_**: typeof `GiftCardRepository`
#### Defined in
[packages/medusa/src/services/discount.ts:58](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L58)
___
### manager\_
• `Protected` **manager\_**: `EntityManager`
#### Overrides
TransactionBaseService.manager\_
#### Defined in
[packages/medusa/src/services/discount.ts:52](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L52)
___
### newTotalsService\_
• `Protected` `Readonly` **newTotalsService\_**: [`NewTotalsService`](NewTotalsService.md)
#### Defined in
[packages/medusa/src/services/discount.ts:63](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L63)
___
### productService\_
• `Protected` `Readonly` **productService\_**: [`ProductService`](ProductService.md)
#### Defined in
[packages/medusa/src/services/discount.ts:64](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L64)
___
### regionService\_
• `Protected` `Readonly` **regionService\_**: [`RegionService`](RegionService.md)
#### Defined in
[packages/medusa/src/services/discount.ts:65](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L65)
___
### totalsService\_
• `Protected` `Readonly` **totalsService\_**: [`TotalsService`](TotalsService.md)
#### Defined in
[packages/medusa/src/services/discount.ts:62](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L62)
___
### transactionManager\_
• `Protected` **transactionManager\_**: `undefined` \| `EntityManager`
#### Overrides
TransactionBaseService.transactionManager\_
#### Defined in
[packages/medusa/src/services/discount.ts:53](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L53)
## Methods
### addRegion
▸ **addRegion**(`discountId`, `regionId`): `Promise`<`Discount`\>
Adds a region to the discount regions array.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | id of discount |
| `regionId` | `string` | id of region to add |
#### Returns
`Promise`<`Discount`\>
the result of the update operation
#### Defined in
[packages/medusa/src/services/discount.ts:513](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L513)
___
### atomicPhase\_
▸ `Protected` **atomicPhase_**<`TResult`, `TError`\>(`work`, `isolationOrErrorHandler?`, `maybeErrorHandlerOrDontFail?`): `Promise`<`TResult`\>
Wraps some work within a transactional block. If the service already has
a transaction manager attached this will be reused, otherwise a new
transaction manager is created.
#### Type parameters
| Name |
| :------ |
| `TResult` |
| `TError` |
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `work` | (`transactionManager`: `EntityManager`) => `Promise`<`TResult`\> | the transactional work to be done |
| `isolationOrErrorHandler?` | `IsolationLevel` \| (`error`: `TError`) => `Promise`<`void` \| `TResult`\> | the isolation level to be used for the work. |
| `maybeErrorHandlerOrDontFail?` | (`error`: `TError`) => `Promise`<`void` \| `TResult`\> | Potential error handler |
#### Returns
`Promise`<`TResult`\>
the result of the transactional work
#### Inherited from
TransactionBaseService.atomicPhase\_
#### Defined in
[packages/medusa/src/interfaces/transaction-base-service.ts:50](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/interfaces/transaction-base-service.ts#L50)
___
### calculateDiscountForLineItem
▸ **calculateDiscountForLineItem**(`discountId`, `lineItem`, `calculationContextData`): `Promise`<`number`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `discountId` | `string` |
| `lineItem` | `LineItem` |
| `calculationContextData` | `CalculationContextData` |
#### Returns
`Promise`<`number`\>
#### Defined in
[packages/medusa/src/services/discount.ts:614](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L614)
___
### canApplyForCustomer
▸ **canApplyForCustomer**(`discountRuleId`, `customerId`): `Promise`<`boolean`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `discountRuleId` | `string` |
| `customerId` | `undefined` \| `string` |
#### Returns
`Promise`<`boolean`\>
#### Defined in
[packages/medusa/src/services/discount.ts:791](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L791)
___
### create
▸ **create**(`discount`): `Promise`<`Discount`\>
Creates a discount with provided data given that the data is validated.
Normalizes discount code to uppercase.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discount` | `CreateDiscountInput` | the discount data to create |
#### Returns
`Promise`<`Discount`\>
the result of the create operation
#### Defined in
[packages/medusa/src/services/discount.ts:187](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L187)
___
### createDynamicCode
▸ **createDynamicCode**(`discountId`, `data`): `Promise`<`Discount`\>
Creates a dynamic code for a discount id.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | the id of the discount to create a code for |
| `data` | `CreateDynamicDiscountInput` | the object containing a code to identify the discount by |
#### Returns
`Promise`<`Discount`\>
the newly created dynamic code
#### Defined in
[packages/medusa/src/services/discount.ts:441](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L441)
___
### delete
▸ **delete**(`discountId`): `Promise`<`void`\>
Deletes a discount idempotently
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | id of discount to delete |
#### Returns
`Promise`<`void`\>
the result of the delete operation
#### Defined in
[packages/medusa/src/services/discount.ts:573](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L573)
___
### deleteDynamicCode
▸ **deleteDynamicCode**(`discountId`, `code`): `Promise`<`void`\>
Deletes a dynamic code for a discount id.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | the id of the discount to create a code for |
| `code` | `string` | the code to identify the discount by |
#### Returns
`Promise`<`void`\>
the newly created dynamic code
#### Defined in
[packages/medusa/src/services/discount.ts:492](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L492)
___
### hasExpired
▸ **hasExpired**(`discount`): `boolean`
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
#### Returns
`boolean`
#### Defined in
[packages/medusa/src/services/discount.ts:760](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L760)
___
### hasNotStarted
▸ **hasNotStarted**(`discount`): `boolean`
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
#### Returns
`boolean`
#### Defined in
[packages/medusa/src/services/discount.ts:756](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L756)
___
### hasReachedLimit
▸ **hasReachedLimit**(`discount`): `boolean`
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
#### Returns
`boolean`
#### Defined in
[packages/medusa/src/services/discount.ts:750](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L750)
___
### isDisabled
▸ **isDisabled**(`discount`): `boolean`
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
#### Returns
`boolean`
#### Defined in
[packages/medusa/src/services/discount.ts:768](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L768)
___
### isValidForRegion
▸ **isValidForRegion**(`discount`, `region_id`): `Promise`<`boolean`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `discount` | `Discount` |
| `region_id` | `string` |
#### Returns
`Promise`<`boolean`\>
#### Defined in
[packages/medusa/src/services/discount.ts:772](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L772)
___
### list
▸ **list**(`selector?`, `config?`): `Promise`<`Discount`[]\>
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `selector` | `FilterableDiscountProps` | the query object for find |
| `config` | `FindConfig`<`Discount`\> | the config object containing query settings |
#### Returns
`Promise`<`Discount`[]\>
the result of the find operation
#### Defined in
[packages/medusa/src/services/discount.ts:125](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L125)
___
### listAndCount
▸ **listAndCount**(`selector?`, `config?`): `Promise`<[`Discount`[], `number`]\>
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `selector` | `FilterableDiscountProps` | the query object for find |
| `config` | `FindConfig`<`Discount`\> | the config object containing query settings |
#### Returns
`Promise`<[`Discount`[], `number`]\>
the result of the find operation
#### Defined in
[packages/medusa/src/services/discount.ts:141](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L141)
___
### listByCodes
▸ **listByCodes**(`discountCodes`, `config?`): `Promise`<`Discount`[]\>
List all the discounts corresponding to the given codes
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountCodes` | `string`[] | discount codes of discounts to retrieve |
| `config` | `FindConfig`<`Discount`\> | the config object containing query settings |
#### Returns
`Promise`<`Discount`[]\>
the discounts
#### Defined in
[packages/medusa/src/services/discount.ts:314](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L314)
___
### removeRegion
▸ **removeRegion**(`discountId`, `regionId`): `Promise`<`Discount`\>
Removes a region from the discount regions array.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | id of discount |
| `regionId` | `string` | id of region to remove |
#### Returns
`Promise`<`Discount`\>
the result of the update operation
#### Defined in
[packages/medusa/src/services/discount.ts:548](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L548)
___
### retrieve
▸ **retrieve**(`discountId`, `config?`): `Promise`<`Discount`\>
Gets a discount by id.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | id of discount to retrieve |
| `config` | `FindConfig`<`Discount`\> | the config object containing query settings |
#### Returns
`Promise`<`Discount`\>
the discount
#### Defined in
[packages/medusa/src/services/discount.ts:253](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L253)
___
### retrieveByCode
▸ **retrieveByCode**(`discountCode`, `config?`): `Promise`<`Discount`\>
Gets the discount by discount code.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountCode` | `string` | discount code of discount to retrieve |
| `config` | `FindConfig`<`Discount`\> | the config object containing query settings |
#### Returns
`Promise`<`Discount`\>
the discount
#### Defined in
[packages/medusa/src/services/discount.ts:286](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L286)
___
### shouldRetryTransaction\_
▸ `Protected` **shouldRetryTransaction_**(`err`): `boolean`
#### Parameters
| Name | Type |
| :------ | :------ |
| `err` | `Record`<`string`, `unknown`\> \| { `code`: `string` } |
#### Returns
`boolean`
#### Inherited from
TransactionBaseService.shouldRetryTransaction\_
#### Defined in
[packages/medusa/src/interfaces/transaction-base-service.ts:31](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/interfaces/transaction-base-service.ts#L31)
___
### update
▸ **update**(`discountId`, `update`): `Promise`<`Discount`\>
Updates a discount.
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountId` | `string` | discount id of discount to update |
| `update` | `UpdateDiscountInput` | the data to update the discount with |
#### Returns
`Promise`<`Discount`\>
the result of the update operation
#### Defined in
[packages/medusa/src/services/discount.ts:344](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L344)
___
### validateDiscountForCartOrThrow
▸ **validateDiscountForCartOrThrow**(`cart`, `discount`): `Promise`<`void`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `cart` | `Cart` |
| `discount` | `Discount` \| `Discount`[] |
#### Returns
`Promise`<`void`\>
#### Defined in
[packages/medusa/src/services/discount.ts:685](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L685)
___
### validateDiscountForProduct
▸ **validateDiscountForProduct**(`discountRuleId`, `productId`): `Promise`<`boolean`\>
#### Parameters
| Name | Type |
| :------ | :------ |
| `discountRuleId` | `string` |
| `productId` | `undefined` \| `string` |
#### Returns
`Promise`<`boolean`\>
#### Defined in
[packages/medusa/src/services/discount.ts:587](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L587)
___
### validateDiscountRule\_
▸ **validateDiscountRule_**<`T`\>(`discountRule`): `T`
Creates a discount rule with provided data given that the data is validated.
#### Type parameters
| Name | Type |
| :------ | :------ |
| `T` | extends `Object` |
#### Parameters
| Name | Type | Description |
| :------ | :------ | :------ |
| `discountRule` | `T` | the discount rule to create |
#### Returns
`T`
the result of the create operation
#### Defined in
[packages/medusa/src/services/discount.ts:107](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/services/discount.ts#L107)
___
### withTransaction
▸ **withTransaction**(`transactionManager?`): [`DiscountService`](DiscountService.md)
#### Parameters
| Name | Type |
| :------ | :------ |
| `transactionManager?` | `EntityManager` |
#### Returns
[`DiscountService`](DiscountService.md)
#### Inherited from
TransactionBaseService.withTransaction
#### Defined in
[packages/medusa/src/interfaces/transaction-base-service.ts:14](https://github.com/medusajs/medusa/blob/a4575c391/packages/medusa/src/interfaces/transaction-base-service.ts#L14)
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