chore: rename wrong variable names

Author: stampaaaron

apps/backend/src/research/studies/studies.service.ts

@@ -8,48 +8,48 @@ import { Study } from "./study.entity";
 export class StudiesService {
   constructor(
     @InjectRepository(Study)
-    private readonly questionnaireRepository: EntityRepository<Study>,
+    private readonly studyRepository: EntityRepository<Study>,
     private readonly em: EntityManager
   ) {}
 
-  async create(questionnaireCreationDto: StudyCreationDto) {
-    const questionnaire = new Study();
-    questionnaire.assign(questionnaireCreationDto);
+  async create(studyCreationDto: StudyCreationDto) {
+    const study = new Study();
+    study.assign(studyCreationDto);
 
     try {
-      await this.em.persist(questionnaire).flush();
+      await this.em.persist(study).flush();
     } catch (e) {
       if (e instanceof UniqueConstraintViolationException) {
         throw new UnprocessableEntityException("Study with this name already exists");
       }
       throw e;
     }
 
-    return questionnaire.toObject();
+    return study.toObject();
   }
 
   async findAll() {
-    return (await this.questionnaireRepository.findAll()).map((questionnaire) => questionnaire.toObject());
+    return (await this.studyRepository.findAll()).map((study) => study.toObject());
   }
 
   async findOne(id: number) {
-    return (await this.questionnaireRepository.findOneOrFail(id)).toObject();
+    return (await this.studyRepository.findOneOrFail(id)).toObject();
   }
 
   async findBy(filter: FilterQuery<Study>) {
-    return (await this.questionnaireRepository.findOneOrFail(filter)).toObject();
+    return (await this.studyRepository.findOneOrFail(filter)).toObject();
   }
 
-  async update(id: number, questionnaireMutationDto: StudyMutationDto) {
-    const questionnaire = await this.questionnaireRepository.findOneOrFail(id);
-    questionnaire.assign(questionnaireMutationDto);
+  async update(id: number, studyMutationDto: StudyMutationDto) {
+    const study = await this.studyRepository.findOneOrFail(id);
+    study.assign(studyMutationDto);
 
-    await this.em.persist(questionnaire).flush();
+    await this.em.persist(study).flush();
 
-    return questionnaire.toObject();
+    return study.toObject();
   }
 
   remove(id: number) {
-    return this.em.remove(this.questionnaireRepository.getReference(id)).flush();
+    return this.em.remove(this.studyRepository.getReference(id)).flush();
   }
 }