fix: allow empty "description" and "resourceType"

this is done to make it easier creating UI for editing these fields, as usually forms send empty value instead of "null" or "undefined"

Author: maxceem

src/bootstrap.js

@@ -9,6 +9,10 @@ Joi.jobStatus = () => Joi.string().valid('sourcing', 'in-review', 'assigned', 'c
 Joi.jobCandidateStatus = () => Joi.string().valid('open', 'selected', 'shortlist', 'rejected', 'cancelled')
 Joi.workload = () => Joi.string().valid('full-time', 'fractional')
 Joi.title = () => Joi.string().max(128)
+// Empty string is not allowed by Joi by default and must be enabled with allow('').
+// See https://joi.dev/api/?v=17.3.0#string fro details why it's like this.
+// In many cases we would like to allow empty string to make it easier to create UI for editing data.
+Joi.stringAllowEmpty = () => Joi.string().allow('')
 
 const zapierSwitch = Joi.string().label('ZAPIER_SWITCH').valid(...Object.values(constants.Zapier.Switch))
 

src/services/JobProcessorService.js

@@ -70,12 +70,12 @@ processCreate.schema = {
       id: Joi.string().uuid().required(),
       projectId: Joi.number().integer().required(),
       externalId: Joi.string(),
-      description: Joi.string(),
+      description: Joi.stringAllowEmpty(),
       title: Joi.title().required(),
       startDate: Joi.date(),
       endDate: Joi.date(),
       numPositions: Joi.number().integer().min(1).required(),
-      resourceType: Joi.string(),
+      resourceType: Joi.stringAllowEmpty(),
       rateType: Joi.rateType(),
       workload: Joi.workload(),
       skills: Joi.array().items(Joi.string().uuid()).required(),
@@ -119,12 +119,12 @@ processUpdate.schema = {
       id: Joi.string().uuid().required(),
       projectId: Joi.number().integer(),
       externalId: Joi.string(),
-      description: Joi.string(),
+      description: Joi.stringAllowEmpty(),
       title: Joi.title(),
       startDate: Joi.date(),
       endDate: Joi.date(),
       numPositions: Joi.number().integer().min(1),
-      resourceType: Joi.string(),
+      resourceType: Joi.stringAllowEmpty(),
       rateType: Joi.rateType(),
       workload: Joi.workload(),
       skills: Joi.array().items(Joi.string().uuid()),