Feature: add createCustomField resolver (#1698)

* Feature: add createCustomField resolver

* update mocks

* fix import

* invalidate workspace datasource cache after migration

* fix typo

server/src/tenant/metadata/field-metadata/field-metadata.service.ts

@@ -4,6 +4,7 @@ import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
 
 import { FieldMetadata } from './field-metadata.entity';
+import { generateColumnName } from './field-metadata.util';
 
 @Injectable()
 export class FieldMetadataService {
@@ -11,4 +12,29 @@ export class FieldMetadataService {
     @InjectRepository(FieldMetadata, 'metadata')
     private readonly fieldMetadataRepository: Repository<FieldMetadata>,
   ) {}
+
+  public async createFieldMetadata(
+    name: string,
+    type: string,
+    objectId: string,
+    workspaceId: string,
+  ): Promise<FieldMetadata> {
+    return await this.fieldMetadataRepository.save({
+      displayName: name,
+      type,
+      objectId,
+      isCustom: true,
+      targetColumnName: generateColumnName(name),
+      workspaceId,
+    });
+  }
+
+  public async getFieldMetadataByNameAndObjectId(
+    name: string,
+    objectId: string,
+  ): Promise<FieldMetadata | null> {
+    return await this.fieldMetadataRepository.findOne({
+      where: { displayName: name, objectId },
+    });
+  }
 }

server/src/tenant/metadata/field-metadata/field-metadata.util.ts

@@ -0,0 +1,9 @@
+/**
+ * Generate a column name from a field name removing unsupported characters.
+ *
+ * @param name string
+ * @returns string
+ */
+export function generateColumnName(name: string): string {
+  return name.toLowerCase().replace(/ /g, '_');
+}