feat: add optional slug field to UpdateSectionDto and update service to support manual slug overrides

src/profile-fields/dto/update-section.dto.ts

@@ -1,4 +1,18 @@
-import { PartialType } from '@nestjs/swagger';
+import { PartialType, ApiPropertyOptional } from '@nestjs/swagger';
+import { IsOptional, IsString, Matches, MaxLength, MinLength } from 'class-validator';
 import { CreateSectionDto } from './create-section.dto';
 
-export class UpdateSectionDto extends PartialType(CreateSectionDto) {}
+export class UpdateSectionDto extends PartialType(CreateSectionDto) {
+  @ApiPropertyOptional({
+    description: 'URL-friendly slug (lowercase letters, digits, hyphens). Auto-regenerated from name if omitted.',
+    example: 'basic-information',
+  })
+  @IsOptional()
+  @IsString()
+  @MinLength(2)
+  @MaxLength(100)
+  @Matches(/^[a-z0-9]+(?:-[a-z0-9]+)*$/, {
+    message: 'slug must contain only lowercase letters, digits, and hyphens (no leading/trailing/consecutive hyphens)',
+  })
+  slug?: string;
+}

src/profile-fields/profile-sections.service.ts

@@ -108,22 +108,27 @@ export class ProfileSectionsService {
 
     const data: any = { ...updateSectionDto };
 
-    // If name is being updated, update the slug too
+    // Resolve effective slug: explicit slug from DTO wins; otherwise regenerate from name if name changed
-    if (updateSectionDto.name) {
+    let effectiveSlug: string | undefined;
-      const newSlug = this.generateSlug(updateSectionDto.name);
+    if (updateSectionDto.slug) {
+      effectiveSlug = updateSectionDto.slug;
+    } else if (updateSectionDto.name) {
+      effectiveSlug = this.generateSlug(updateSectionDto.name);
+    }
 
-      // Check if new slug conflicts with another section
+    if (effectiveSlug) {
+      // Check if slug conflicts with another section
       const existing = await this.prisma.profileSection.findFirst({
         where: {
-          AND: [{ id: { not: id } }, { slug: newSlug }],
+          AND: [{ id: { not: id } }, { slug: effectiveSlug }],
         },
       });
 
       if (existing) {
-        throw new ConflictException('A section with this name already exists');
+        throw new ConflictException('A section with this slug already exists');
       }
 
-      data.slug = newSlug;
+      data.slug = effectiveSlug;
     }
 
     return this.prisma.profileSection.update({