Feature/subject in contact form (#1926)

* #1915 Add a subject to contact form and add it to email sent

* #1915 Add subject to contact form tests

* #1915 Contact form test corrected && tslint correction

2 files changed, 16 insertions, 1 deletions

diff --git a/client/src/app/shared/forms/form-validators/instance-validators.service.ts b/client/src/app/shared/forms/form-validators/instance-validators.service.ts
index 5bb852858..cc5f3c5a1 100644
--- a/client/src/app/shared/forms/form-validators/instance-validators.service.ts
+++ b/client/src/app/shared/forms/form-validators/instance-validators.service.ts
@@ -7,6 +7,7 @@ import { Injectable } from '@angular/core'
 export class InstanceValidatorsService {
   readonly FROM_EMAIL: BuildFormValidator
   readonly FROM_NAME: BuildFormValidator
+  readonly SUBJECT: BuildFormValidator
   readonly BODY: BuildFormValidator
 
   constructor (private i18n: I18n) {
@@ -32,6 +33,19 @@ export class InstanceValidatorsService {
       }
     }
 
+    this.SUBJECT = {
+      VALIDATORS: [
+        Validators.required,
+        Validators.minLength(1),
+        Validators.maxLength(120)
+      ],
+      MESSAGES: {
+        'required': this.i18n('A subject is required.'),
+        'minlength': this.i18n('The subject must be at least 1 character long.'),
+        'maxlength': this.i18n('The subject cannot be more than 120 characters long.')
+      }
+    }
+
     this.BODY = {
       VALIDATORS: [
         Validators.required,
diff --git a/client/src/app/shared/instance/instance.service.ts b/client/src/app/shared/instance/instance.service.ts
index 61321ecce..d0c96941d 100644
--- a/client/src/app/shared/instance/instance.service.ts
+++ b/client/src/app/shared/instance/instance.service.ts
@@ -22,10 +22,11 @@ export class InstanceService {
                .pipe(catchError(res => this.restExtractor.handleError(res)))
   }
 
-  contactAdministrator (fromEmail: string, fromName: string, message: string) {
+  contactAdministrator (fromEmail: string, fromName: string, subject: string, message: string) {
     const body = {
       fromEmail,
       fromName,
+      subject,
       body: message
     }