Users pagination #35
Users pagination #35
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WalkthroughThe changes in this pull request enhance the Changes
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (1)
src/services/user.ts (1)
82-87: LGTM! Consider improvingtotalPagescalculation.The changes to include pagination information are good. They provide necessary data for implementing pagination on the client side.
However, consider improving the
totalPagescalculation to handle the case when there are no users:- const totalPages = Math.ceil(total / limit) + const totalPages = Math.max(1, Math.ceil(total / limit))This ensures that
totalPagesis always at least 1, which can be more intuitive for consumers of this function.Also applies to: 94-100
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- src/services/user.ts (1 hunks)
🔇 Additional comments (2)
src/services/user.ts (2)
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1-100: Overall assessment: Good implementation of pagination.The changes to the
queryUsersfunction effectively implement pagination support. The addition of total count, total pages, and other pagination metadata will greatly improve the usability of this function for client-side pagination.A few minor improvements have been suggested, mainly around edge case handling and ensuring backwards compatibility. Once these are addressed, the implementation will be robust and ready for use.
Remember to update any consumers of this function to handle the new return type, as it has changed significantly from returning just an array of users to an object containing pagination information.
94-100: Reminder: Update consumers ofqueryUsersfunction.The return type of
queryUsershas changed significantly. It now returns an object with pagination information instead of just an array of users.Please ensure that all consumers of this function are updated to handle the new return type. Run the following script to find potential usage of
queryUsers:Review the results and update the consumers accordingly.
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Actionable comments posted: 0
🧹 Outside diff range and nitpick comments (1)
src/services/user.ts (1)
86-86: Consider adding a safeguard against division by zeroWhile the current implementation is robust, it's worth adding a small safeguard to prevent potential division by zero in the
totalPagescalculation. This could happen iflimitis accidentally set to 0.Consider updating the line as follows:
- const totalPages = Math.max(1, Math.ceil(total / limit)) + const totalPages = Math.max(1, Math.ceil(total / Math.max(1, limit)))This ensures that even if
limitis 0, the function will behave as if the limit is 1, preventing any potential errors.
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🔇 Additional comments (3)
src/services/user.ts (3)
82-101: Great implementation of pagination logic!The changes effectively address the previous comment about handling cases where
pageexceedstotalPages. The implementation is correct and efficient, providing a robust pagination solution. Here's a breakdown of the improvements:
- Calculation of total users and pages (lines 82-87)
- Introduction of
adjustedPageto handle edge cases (line 87)- Using
adjustedPagein theskipcalculation (line 93)- Returning comprehensive pagination details (lines 95-101)
These changes significantly enhance the
queryUsersfunction, making it more versatile and user-friendly.
82-101: Summary of changes toqueryUsersfunctionThe modifications to the
queryUsersfunction significantly improve its functionality by introducing robust pagination. Key improvements include:
- Calculation of total users and pages
- Handling of edge cases where requested page exceeds total pages
- Returning comprehensive pagination details
These changes enhance the function's versatility and user-friendliness. The implementation addresses previous comments and provides a solid foundation for paginated user queries.
Remember to verify the usage of this function across the codebase due to the change in return type, and consider the minor optimization suggested for the
totalPagescalculation.Overall, these changes represent a substantial improvement to the user service.
95-101: Verify usage ofqueryUsersfunction across the codebaseThe return type of the
queryUsersfunction has been significantly changed. It now returns an object with pagination details instead of just an array of users. This change, while beneficial, may impact other parts of the codebase that use this function.Please ensure that all callers of the
queryUsersfunction are updated to handle the new return type. You can use the following script to identify potential usage sites:This will help identify areas that may need updates to accommodate the new return structure.
✅ Verification successful
Usage of
queryUsersfunction verifiedOnly one usage of the
queryUsersfunction was found insrc/controllers/user.ts. Please ensure that this usage correctly handles the new return type with pagination details.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Find potential usage of queryUsers function # Search for queryUsers function calls echo "Searching for queryUsers function calls:" rg --type typescript "queryUsers\(" -A 5 # Search for destructuring of users that might need updating echo "\nSearching for potential destructuring of users that might need updating:" rg --type typescript "const\s+{\s*users\s*}\s*=\s*await\s*queryUsers" -A 5Length of output: 542
Script:
#!/bin/bash # Description: Find potential usage of queryUsers function with corrected file type and regex. # Search for queryUsers function calls echo "Searching for queryUsers function calls:" rg --type ts "queryUsers\(" -A 5 # Search for destructuring of users that might need updating echo "\nSearching for potential destructuring of users that might need updating:" rg --type ts 'const\s+{\s*users\s*}\s*=\s*await\s*queryUsers' -A 5Length of output: 839
Script:
#!/bin/bash # Description: Find potential usage of queryUsers function with corrected regex patterns. # Search for queryUsers function calls echo "Searching for queryUsers function calls:" rg --type ts "queryUsers\(" -A 5 # Search for destructuring of users that might need updating echo "\nSearching for potential destructuring of users that might need updating:" rg --type ts 'const\s+\{\s*users\s*\}\s*=\s*await\s*queryUsers' -A 5Length of output: 703
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Tip For best results, initiate chat on the files or code changes. @likui628: Understood. Encapsulating the pagination logic will improve code reusability and readability. Here's how you can do it: Create a pagination utility function: // src/utils/pagination.ts
export function paginate(page: number, limit: number, total: number) {
const totalPages = Math.ceil(total / limit) || 1;
const adjustedPage = Math.min(Math.max(1, page), totalPages);
const skip = (adjustedPage - 1) * limit;
return {
page: adjustedPage,
limit,
total,
totalPages,
skip,
};
}Update the // src/services/user.ts
import { paginate } from '../utils/pagination';
export async function queryUsers(page: number, limit: number) {
const total = await prisma.user.count();
const { page: adjustedPage, limit: adjustedLimit, skip, totalPages } = paginate(page, limit, total);
const users = await prisma.user.findMany({
skip,
take: adjustedLimit,
orderBy: { id: 'asc' },
});
return {
users,
page: adjustedPage,
limit: adjustedLimit,
total,
totalPages,
};
}This way, the pagination logic is encapsulated in a separate utility function, which can be reused across different services whenever pagination is needed. ✏️ Learnings added
|
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Actionable comments posted: 4
🧹 Outside diff range and nitpick comments (1)
src/utils/prisma.ts (1)
36-39: Consider performance implications of counting large datasetsUsing
db.count({ where })can introduce performance overhead on large datasets because it requires scanning and counting a potentially vast number of records. This can impact the responsiveness of your application.Suggestions:
- Implement approximate counting: If exact counts are not critical, consider using database-specific features to get an estimated count more efficiently.
- Introduce caching: Cache count results for frequent queries to reduce database load.
- Limit maximum
pageSize: Enforce a reasonable maximum onpageSizeto prevent users from requesting excessively large pages.These strategies can help mitigate performance issues and improve the scalability of your application.
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- src/services/user.ts
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (1)
src/utils/prisma.ts (1)
36-60: Excellent pagination logic and return valueThe implementation of the
paginatefunction is well done:
- The use of
Promise.allfor concurrent database operations is efficient.- The
totalPagescalculation now correctly handles the case whentotalCountis zero, addressing a previous review comment.- The return object provides all necessary information for pagination.
These improvements enhance the function's performance and correctness.
Consider adding a comment explaining the
totalPagescalculation for future maintainers:// Calculate total pages, ensuring it's 0 when there are no items const totalPages = totalCount > 0 ? Math.ceil(totalCount / pageSize) : 0
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📒 Files selected for processing (2)
- src/services/user.ts (2 hunks)
- src/utils/prisma.ts (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- src/services/user.ts
🔇 Additional comments (3)
src/utils/prisma.ts (3)
1-3: LGTM: Import and prisma client initializationThe addition of
Prismato the import statement is appropriate for the new type definitions. The prisma client initialization remains correct.
5-12:⚠️ Potential issueConsider using Prisma's public types instead of internal ones
While the type definitions are well-structured, using
Prisma.TypeMapaccesses Prisma's internal types, which may change in future versions and lead to potential issues. Consider using Prisma's public types for better stability and maintainability.As suggested in a previous review, you could refactor these types to use the model delegate directly:
type PaginationOptions<ModelDelegate> = { model: ModelDelegate; where?: Parameters<ModelDelegate['findMany']>[0]['where']; orderBy?: Parameters<ModelDelegate['findMany']>[0]['orderBy']; include?: Parameters<ModelDelegate['findMany']>[0]['include']; page?: number; pageSize?: number; };This approach leverages Prisma Client's existing types and avoids relying on internal structures.
22-34:⚠️ Potential issueGood input validation, but remove @ts-expect-error
The input validation for
pageandpageSizeis a great addition, ensuring they are positive integers. This addresses a previous review comment and improves the function's robustness.However, the use of
@ts-expect-erroris concerning as it suppresses a TypeScript error instead of addressing the underlying issue.As suggested in a previous review, consider refactoring the function to accept the model delegate directly:
export async function paginate<ModelDelegate extends { findMany: Function; count: Function }>({ model, page = 1, pageSize = 10, where, orderBy, include, }: PaginationOptions<ModelDelegate>) { // Rest of your code... }This approach eliminates the need for
@ts-expect-errorand provides better type safety.
| type PaginationOptions<ModelName extends ModelNames> = { | ||
| modelName: ModelName | ||
| where?: PrismaFindManyArgs<ModelName>['where'] | ||
| orderBy?: PrismaFindManyArgs<ModelName>['orderBy'] | ||
| include?: PrismaFindManyArgs<ModelName>['include'] | ||
| page?: number | ||
| pageSize?: number | ||
| } |
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Well-structured PaginationOptions type, but reconsider use of internal Prisma types
The PaginationOptions type is well-defined and includes all necessary fields for pagination. However, it relies on the previously defined types that use Prisma's internal types.
Consider refactoring this type along with the previous ones to use Prisma's public types, as suggested in the previous comment. This will make your code more resilient to future Prisma updates.
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (2)
src/types/index.ts (1)
Line range hint
17-19: Consider makingtokenoptional inUserDatainterfaceThe
UserDatainterface extends theUsertype and adds atokenfield. However, not all user data might include a token. Consider making thetokenfield optional for more flexibility:export interface UserData extends User { token?: string }This change would allow the
UserDatainterface to be used in contexts where a token might not be present, improving its reusability.src/validations/user.ts (1)
10-13: LGTM! Consider adding a default sorting option.The addition of
orderByandorderproperties to thegetUsersSchemais a good enhancement. It allows for flexible sorting of user queries, which aligns well with the pagination feature.Consider setting default values for these properties to ensure consistent behavior when they're not explicitly provided. For example:
orderBy: z .enum(['name', 'email', 'role', 'createdAt', 'updatedAt']) .default('createdAt') .optional(), order: z.enum(['asc', 'desc']).default('desc').optional(),This would default to sorting by 'createdAt' in descending order if not specified.
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🚧 Files skipped from review as they are similar to previous changes (1)
- src/services/user.ts
| @@ -1,9 +1,9 @@ | |||
| import { Role, User } from '@prisma/client' | |||
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| export interface Pagination { | |||
| orderBy?: 'name' | 'email' | 'createdAt' | 'updatedAt' | |||
| orderBy?: string | |||
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🛠️ Refactor suggestion
Consider using a union type for orderBy instead of string
While changing orderBy to string provides more flexibility, it reduces type safety. This could potentially lead to runtime errors if invalid values are used. Consider using a union type with a catch-all string literal type for future additions:
orderBy?: 'name' | 'email' | 'createdAt' | 'updatedAt' | (string & {})This approach maintains some type safety while allowing for future additions.
| order?: 'asc' | 'desc' | ||
| limit?: number | ||
| pageSize?: number |
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💡 Codebase verification
Incomplete Rename of limit to pageSize in Pagination Context
limitis still used insrc/validations/common.tswithin the pagination validation schema and should be renamed topageSizeto ensure consistency.- The usage of
limitinsrc/middlewares/rate-limiter.tsis appropriate and unrelated to pagination.
🔗 Analysis chain
Rename from limit to pageSize looks good
The rename from limit to pageSize is a good change as it's more descriptive and aligns better with pagination terminology. However, ensure that this change is consistently applied throughout the codebase to maintain coherence.
Let's verify the impact of this rename:
Further Verification Needed
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check for any remaining uses of 'limit' in pagination context
# and ensure 'pageSize' is used consistently
# Search for 'limit' usage in TypeScript files
echo "Searching for 'limit' usage:"
rg --type typescript '\blimit\b' -C 2
# Search for 'pageSize' usage in TypeScript files
echo "Searching for 'pageSize' usage:"
rg --type typescript '\bpageSize\b' -C 2
Length of output: 304
Script:
#!/bin/bash
# Description: Check for any remaining uses of 'limit' in pagination context
# and ensure 'pageSize' is used consistently
# Search for 'limit' usage in TypeScript files
echo "Searching for 'limit' usage:"
rg --glob '*.ts' --glob '*.tsx' '\blimit\b' -C 2
# Search for 'pageSize' usage in TypeScript files
echo "Searching for 'pageSize' usage:"
rg --glob '*.ts' --glob '*.tsx' '\bpageSize\b' -C 2
Length of output: 2739
Summary by CodeRabbit