fixed errors

src/app/group/components/group-edit/group-edit.component.html

@@ -3,6 +3,7 @@
     <div class="d-flex justify-content-end">
       <button *ngIf="group.admin.id === currentUserId" (click)="onDelete()" class="btn btn-primary">Delete group</button>
       <button *ngIf="group.admin.id !== currentUserId" (click)="onLeaveGroup()" class="btn btn-primary">Leave group</button>
+      <button (click)="onBackToGroupList()" class="btn btn-primary ml-2">Back to group list</button>
     </div>
     <div class="group-main-data mb-5">
       <h3>Group info:</h3>

src/app/group/components/group-edit/group-edit.component.ts

@@ -30,6 +30,10 @@ export class GroupEditComponent implements OnInit {
     this.groupCandidates$ = this.groupCandidateService.getList(this.groupId);
   }
 
+  onBackToGroupList(): void {
+    this.router.navigateByUrl('/group');
+  }
+
   onDelete(): void {
     this.groupService.delete(this.groupId).subscribe(() => {
       this.router.navigateByUrl('/group');

src/app/subject/components/subject-edit/subject-edit.component.html

@@ -53,7 +53,7 @@
       <div class="list-group-item">
           <h5 class="card-title">Test {{i + 1}}</h5>
           <div [formGroup]="assignment" class="d-flex flex-column">
-            <mat-form-field>
+            <mat-form-field [ngClass]="{'error-field': submited && assignment.controls.name.value == ''}">
                 <mat-label>Name</mat-label>
                 <input matInput formControlName="name"/>
             </mat-form-field>
@@ -61,7 +61,7 @@
                 <mat-label>Deadline</mat-label>
                 <input matInput type="datetime-local" formControlName="deadline" />
             </mat-form-field>
-            <mat-form-field>
+            <mat-form-field [ngClass]="{'error-field': submited && assignment.controls.description.value == ''}">
                 <mat-label>Description</mat-label>
                 <textarea matInput type="text" formControlName="description"></textarea>
             </mat-form-field>
@@ -79,7 +79,7 @@
         <div class="list-group-item">
             <h5 class="card-title">Test {{i + 1}}</h5>
             <div [formGroup]="comment">
-                <mat-form-field>
+                <mat-form-field [ngClass]="{'error-field': submited && comment.controls.text.value == ''}">
                     <mat-label>Text</mat-label>
                     <textarea matInput type="text" formControlName="text"></textarea>
                 </mat-form-field>
@@ -90,7 +90,7 @@
         <button [disabled]="!editable" (click)="onAddNewComment()" class="btn btn-primary">Add new comment</button>
     </div>
     <div class="mt-4">
-        <button [disabled]="!editable" (click)="onSubjectSave()" class="btn btn-primary">Save</button>
+        <button [disabled]="!editable" (click)="onSubjectSave()" type="submit" class="btn btn-primary">Save</button>
     </div>
     <div class="mt-4">
         <button (click)="backToGroup()" class="btn btn-primary">Back to group</button>

src/app/subject/components/subject-edit/subject-edit.component.ts

@@ -1,6 +1,6 @@
 import { GroupService } from './../../../group/services/group.service';
 import { Assignment } from './../../interfaces/assignment.interface';
-import { Component, OnInit } from '@angular/core';
+import { Component, OnInit, ChangeDetectorRef } from '@angular/core';
 import { FormGroup, FormControl, Validators, FormArray } from '@angular/forms';
 import { SubjectService } from '../../services/subject.service';
 import { ActivatedRoute, Router } from '@angular/router';
@@ -18,13 +18,15 @@ export class SubjectEditComponent implements OnInit {
   subject: Subject;
   subjectForm: FormGroup;
   subjectId: number;
+  submited = false;
   groupId: number;
-  editable: boolean;
+  editable = true;
 
   constructor(private activatedRoute: ActivatedRoute,
               private subjectService: SubjectService,
               private groupService: GroupService,
-              private router: Router) { }
+              private router: Router,
+              private cd: ChangeDetectorRef) { }
 
   ngOnInit(): void {
     this.groupId = this.activatedRoute.snapshot.params.groupId;
@@ -44,7 +46,7 @@ export class SubjectEditComponent implements OnInit {
   }
 
   backToGroup(): void {
-    if (this.editable) {
+    if (this.editable && this.subjectId) {
       this.subjectService.unlock(this.subjectId).subscribe(() => {
         this.router.navigateByUrl('/group/edit/' + this.groupId);
       });
@@ -90,7 +92,7 @@ export class SubjectEditComponent implements OnInit {
       (this.subjectForm.controls.tests as FormArray).push(new FormGroup({
         id: new FormControl(null),
         date: new FormControl(null),
-        scope: new FormControl(''),
+        scope: new FormControl('', Validators.required),
         finalMarkPercent: new FormControl(0),
         subjectId: new FormControl(null)
       }));
@@ -98,9 +100,9 @@ export class SubjectEditComponent implements OnInit {
     for (let assignment of this.subject.assignments) {
       (this.subjectForm.controls.assignments as FormArray).push(new FormGroup({
         id: new FormControl(null),
-        name: new FormControl(''),
+        name: new FormControl('', Validators.required),
         deadline: new FormControl(null),
-        description: new FormControl(''),
+        description: new FormControl('', Validators.required),
         finalMarkPercent: new FormControl(0),
         subjectId: new FormControl(null)
       }));
@@ -108,7 +110,7 @@ export class SubjectEditComponent implements OnInit {
     for (let comment of this.subject.comments) {
       (this.subjectForm.controls.comments as FormArray).push(new FormGroup({
         id: new FormControl(null),
-        text: new FormControl(''),
+        text: new FormControl('', Validators.required),
         subjectId: new FormControl(null)
       }));
     }
@@ -140,9 +142,9 @@ export class SubjectEditComponent implements OnInit {
       };
     }
     (this.subjectForm.controls.assignments as FormArray).push(new FormGroup({
-      name: new FormControl(assignment.name),
+      name: new FormControl(assignment.name, Validators.required),
       deadline: new FormControl(this.parseDateTimeToISOFormat(assignment.deadline)),
-      description: new FormControl(assignment.description),
+      description: new FormControl(assignment.description, Validators.required),
       finalMarkPercent: new FormControl(assignment.finalMarkPercent)
     }));
   }
@@ -159,6 +161,10 @@ export class SubjectEditComponent implements OnInit {
   }
 
   onSubjectSave(): void {
+    this.submited = true;
+    //this.subjectForm.updateValueAndValidity();
+    //this.cd.detectChanges();
+    if (this.subjectForm.valid) {
       if (this.subjectId) {
         this.subjectService.update(this.subjectForm.value).subscribe(() => {
           this.router.navigateByUrl('/group/edit/' + this.groupId);
@@ -169,6 +175,7 @@ export class SubjectEditComponent implements OnInit {
         });
       }
     }
+  }
 
   private parseDateTimeToISOFormat(date: Date): string {
     return new Date(date.getTime() - (date.getTimezoneOffset() * 60000)).toISOString().slice(0, 16);

src/app/subject/components/subject-list/subject-list.component.html

@@ -17,8 +17,8 @@
         <div>
           Exam: {{ subject.mainExam ? 'Yes' : 'No' }}
         </div>
-        <div>
+        <div *ngIf="subject.mainExam">
-          Exam date: {{ subject.examDate }}
+          Exam date: {{ subject.examDate | date:'dd-MM-y, HH:mm' }}
         </div>
       </div>
       <div class="subject-buttons d-flex align-items-center">

src/app/subject/components/subject-main/subject-main.component.html

@@ -9,7 +9,8 @@
             (addNewSubject)="onAddNewSubject()"
             (deleteRequest)="onAddDeleteRequest($event)"
             (deleteSubject)="onDeleteSubject($event)"
-            (editSubject)="onEditSubject($event)">
+            (editSubject)="onEditSubject($event)"
+            (unlockSubject)="onUnlockSubject($event)">
             </app-subject-list>
         </div>
         <div *ngIf="userId === adminId">

src/styles.scss

@@ -2,3 +2,12 @@
 
 html, body { height: 100%; }
 body { margin: 0; font-family: Roboto, "Helvetica Neue", sans-serif; }
+
+.error-field {
+    .mat-form-field-empty.mat-form-field-label {
+        color: red;
+    }
+    .mat-form-field-underline {
+        background-color: red; 
+    }
+}