feat(project_management): Add project duration field

ref: #14 #270

app/project_management/forms/project.py

@@ -5,6 +5,7 @@ from django.db.models import Q
 from app import settings
 
 from core.forms.common import CommonModelForm
+from core.templatetags.markdown import to_duration
 
 from project_management.models.projects import Project
 
@@ -64,7 +65,9 @@ class DetailForm(ProjectForm):
                     "right": [
                         'planned_start_date',
                         'planned_finish_date',
+                        'real_start_date',
                         'real_finish_date',
+                        'duration'
                     ]
                 },
                 {
@@ -120,6 +123,12 @@ class DetailForm(ProjectForm):
             initial = self.instance.modified,
         )
 
+        self.fields['duration'] = forms.IntegerField(
+            label = 'Duration',
+            disabled = True,
+            initial = to_duration(self.instance.duration_project),
+        )
+
         self.fields['resources'] = forms.CharField(
             label = 'Available Resources',
             disabled = True,

app/project_management/models/projects.py

@@ -105,6 +105,25 @@ class Project(ProjectCommonFieldsName):
         return self.name
 
 
+    @property
+    def duration_project(self) -> int:
+
+        duration_project: int = 0
+
+        from core.models.ticket.ticket import Ticket
+
+        tickets = Ticket.objects.filter(
+            project = self.id
+        )
+
+        for ticket in tickets:
+
+            duration_project = duration_project + int(ticket.duration_ticket)
+
+
+        return int(duration_project)
+
+
     @property
     def percent_completed(self) -> str: # Auto-Calculate
         """ How much of the project is completed.