Faqs dto, service, model

src/DTOs/FAQDTO.ts

 export interface FAQDTO {
   question: string;
   answer: string;
+  position: number;
 }

src/Loaders/ParameterDataBaseLoader.ts

@@ -49,7 +49,7 @@ function initParameterDataBase(): void {
         console.log(err);
       });
   });
-  FAQ.sync();
+  FAQ.sync({ force: true });
 }
 
 export default { initParameterDataBase };

src/Models/FAQ.ts

@@ -16,6 +16,10 @@ FAQ.init({
   answer: {
     type: DataTypes.STRING,
   },
+  position: {
+    type: DataTypes.INTEGER,
+    unique: true,
+  },
   createdBy: {
     type: DataTypes.INTEGER,
   },

src/Services/FAQService.ts

-import FAQ from '../Models/FAQ';
+import { Op } from 'sequelize';
 import { FAQDTO } from '../DTOs/FAQDTO';
+import FAQ from '../Models/FAQ';
 
 const list = (): Promise<FAQ[]> => FAQ.findAll({
-  attributes: ['id', 'question', 'answer', 'createdAt'],
+  attributes: ['id', 'question', 'answer', 'position', 'createdAt'],
   where: {
     deletedAt: null,
   },
+  order: ['position'],
 });
 
 const create = (createDto: FAQDTO): Promise<FAQ> => FAQ.create(createDto);
@@ -20,9 +22,21 @@ const update = async (id: number, createDto: FAQDTO): Promise<FAQ | null> => {
   if (!faq) {
     return null;
   }
-  const { question, answer } = createDto;
+  const { question, answer, position } = createDto;
+  const positionFaq: FAQ | null = await FAQ.findOne({
+    where: {
+      id: {
+        [Op.ne]: id,
+      },
+      position,
+      deletedAt: null,
+    },
+  });
+  if (positionFaq) {
+    return null;
+  }
   return faq.update({
-    question, answer,
+    question, answer, position,
   });
 };