Adding colorize tags on server functionality

settings/common.py

@@ -333,3 +333,10 @@ except IndexError:
     IN_DEVELOPMENT_SERVER = False
 
 ATTACHMENTS_TOKEN_SALT = "ATTACHMENTS_TOKEN_SALT"
+
+TAGS_PREDEFINED_COLORS = ["#fce94f", "#edd400", "#c4a000", "#8ae234",
+                          "#73d216", "#4e9a06", "#d3d7cf", "#fcaf3e",
+                          "#f57900", "#ce5c00", "#729fcf", "#3465a4",
+                          "#204a87", "#888a85", "#ad7fa8", "#75507b",
+                          "#5c3566", "#ef2929", "#cc0000", "#a40000",
+                          "#2e3436",]

taiga/base/serializers.py

@@ -58,6 +58,19 @@ class PgArrayField(serializers.WritableField):
         return data
 
 
+class TagsColorsField(serializers.WritableField):
+    """
+    PgArray objects serializer.
+    """
+    widget = widgets.Textarea
+
+    def to_native(self, obj):
+        return dict(obj)
+
+    def from_native(self, data):
+        return list(data.items())
+
+
 class NeighborsSerializerMixin:
 
     def __init__(self, *args, **kwargs):

taiga/base/tags.py

@@ -8,8 +8,6 @@ from django.utils.translation import ugettext_lazy as _
 
 from djorm_pgarray.fields import TextArrayField
 
-from picklefield.fields import PickledObjectField
-
 
 class TaggedMixin(models.Model):
     tags = TextArrayField(default=None, verbose_name=_("tags"))

taiga/projects/issues/models.py

@@ -26,6 +26,7 @@ from taiga.base.utils.slug import ref_uniquely
 from taiga.projects.notifications import WatchedModelMixin
 from taiga.projects.occ import OCCModelMixin
 from taiga.projects.mixins.blocked import BlockedMixin
+from taiga.projects.services.tags_colors import update_project_tags_colors_handler, remove_unused_tags
 
 
 class Issue(OCCModelMixin, WatchedModelMixin, BlockedMixin, TaggedMixin, models.Model):
@@ -100,3 +101,14 @@ def issue_finished_date_handler(sender, instance, **kwargs):
 def issue_tags_normalization(sender, instance, **kwargs):
     if isinstance(instance.tags, (list, tuple)):
         instance.tags = list(map(lambda x: x.lower(), instance.tags))
+
+
+@receiver(models.signals.post_save, sender=Issue, dispatch_uid="issue_update_project_colors")
+def issue_update_project_tags(sender, instance, **kwargs):
+    update_project_tags_colors_handler(instance)
+
+
+@receiver(models.signals.post_delete, sender=Issue, dispatch_uid="issue_update_project_colors_on_delete")
+def issue_update_project_tags_on_delete(sender, instance, **kwargs):
+    remove_unused_tags(instance.project)
+    instance.project.save()

taiga/projects/migrations/0033_auto__add_field_project_tags_colors.py

@@ -0,0 +1,186 @@
+# -*- coding: utf-8 -*-
+from south.utils import datetime_utils as datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Adding field 'Project.tags_colors'
+        db.add_column('projects_project', 'tags_colors',
+                      self.gf('djorm_pgarray.fields.TextArrayField')(blank=True, default={}, dimension=2, dbtype='text'),
+                      keep_default=False)
+
+
+    def backwards(self, orm):
+        # Deleting field 'Project.tags_colors'
+        db.delete_column('projects_project', 'tags_colors')
+
+
+    models = {
+        'projects.issuestatus': {
+            'Meta': {'ordering': "['project', 'order', 'name']", 'object_name': 'IssueStatus', 'unique_together': "(('project', 'name'),)"},
+            'color': ('django.db.models.fields.CharField', [], {'max_length': '20', 'default': "'#999999'"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'issue_statuses'", 'to': "orm['projects.Project']"})
+        },
+        'projects.issuetype': {
+            'Meta': {'ordering': "['project', 'order', 'name']", 'object_name': 'IssueType', 'unique_together': "(('project', 'name'),)"},
+            'color': ('django.db.models.fields.CharField', [], {'max_length': '20', 'default': "'#999999'"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'issue_types'", 'to': "orm['projects.Project']"})
+        },
+        'projects.membership': {
+            'Meta': {'ordering': "['project', 'user__full_name', 'user__username', 'user__email', 'email']", 'object_name': 'Membership', 'unique_together': "(('user', 'project'),)"},
+            'created_at': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now_add': 'True', 'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'blank': 'True', 'max_length': '255', 'null': 'True', 'default': 'None'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'invited_by_id': ('django.db.models.fields.IntegerField', [], {'blank': 'True', 'null': 'True'}),
+            'is_owner': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'memberships'", 'to': "orm['projects.Project']"}),
+            'role': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'memberships'", 'to': "orm['users.Role']"}),
+            'token': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '60', 'null': 'True', 'default': 'None'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'null': 'True', 'default': 'None', 'to': "orm['users.User']", 'related_name': "'memberships'"})
+        },
+        'projects.points': {
+            'Meta': {'ordering': "['project', 'order', 'name']", 'object_name': 'Points', 'unique_together': "(('project', 'name'),)"},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'points'", 'to': "orm['projects.Project']"}),
+            'value': ('django.db.models.fields.FloatField', [], {'blank': 'True', 'null': 'True', 'default': 'None'})
+        },
+        'projects.priority': {
+            'Meta': {'ordering': "['project', 'order', 'name']", 'object_name': 'Priority', 'unique_together': "(('project', 'name'),)"},
+            'color': ('django.db.models.fields.CharField', [], {'max_length': '20', 'default': "'#999999'"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'priorities'", 'to': "orm['projects.Project']"})
+        },
+        'projects.project': {
+            'Meta': {'ordering': "['name']", 'object_name': 'Project'},
+            'anon_permissions': ('djorm_pgarray.fields.TextArrayField', [], {'blank': 'True', 'null': 'True', 'default': '[]', 'dbtype': "'text'"}),
+            'created_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now_add': 'True'}),
+            'creation_template': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'null': 'True', 'default': 'None', 'to': "orm['projects.ProjectTemplate']", 'related_name': "'projects'"}),
+            'default_issue_status': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'on_delete': 'models.SET_NULL', 'blank': 'True', 'null': 'True', 'to': "orm['projects.IssueStatus']", 'unique': 'True'}),
+            'default_issue_type': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'on_delete': 'models.SET_NULL', 'blank': 'True', 'null': 'True', 'to': "orm['projects.IssueType']", 'unique': 'True'}),
+            'default_points': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'on_delete': 'models.SET_NULL', 'blank': 'True', 'null': 'True', 'to': "orm['projects.Points']", 'unique': 'True'}),
+            'default_priority': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'on_delete': 'models.SET_NULL', 'blank': 'True', 'null': 'True', 'to': "orm['projects.Priority']", 'unique': 'True'}),
+            'default_severity': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'on_delete': 'models.SET_NULL', 'blank': 'True', 'null': 'True', 'to': "orm['projects.Severity']", 'unique': 'True'}),
+            'default_task_status': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'on_delete': 'models.SET_NULL', 'blank': 'True', 'null': 'True', 'to': "orm['projects.TaskStatus']", 'unique': 'True'}),
+            'default_us_status': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'on_delete': 'models.SET_NULL', 'blank': 'True', 'null': 'True', 'to': "orm['projects.UserStoryStatus']", 'unique': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_backlog_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_issues_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_kanban_activated': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_private': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_wiki_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'members': ('django.db.models.fields.related.ManyToManyField', [], {'through': "orm['projects.Membership']", 'related_name': "'projects'", 'to': "orm['users.User']", 'symmetrical': 'False'}),
+            'modified_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '250', 'unique': 'True'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'owned_projects'", 'to': "orm['users.User']"}),
+            'public_permissions': ('djorm_pgarray.fields.TextArrayField', [], {'blank': 'True', 'null': 'True', 'default': '[]', 'dbtype': "'text'"}),
+            'slug': ('django.db.models.fields.SlugField', [], {'blank': 'True', 'max_length': '250', 'unique': 'True'}),
+            'tags': ('djorm_pgarray.fields.TextArrayField', [], {'blank': 'True', 'null': 'True', 'default': 'None', 'dbtype': "'text'"}),
+            'tags_colors': ('djorm_pgarray.fields.TextArrayField', [], {'blank': 'True', 'default': '{}', 'dimension': '2', 'dbtype': "'text'"}),
+            'total_milestones': ('django.db.models.fields.IntegerField', [], {'blank': 'True', 'null': 'True', 'default': '0'}),
+            'total_story_points': ('django.db.models.fields.FloatField', [], {'default': '0'}),
+            'videoconferences': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '250', 'null': 'True'}),
+            'videoconferences_salt': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '250', 'null': 'True'})
+        },
+        'projects.projecttemplate': {
+            'Meta': {'ordering': "['name']", 'object_name': 'ProjectTemplate'},
+            'created_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now_add': 'True'}),
+            'default_options': ('django_pgjson.fields.JsonField', [], {}),
+            'default_owner_role': ('django.db.models.fields.CharField', [], {'max_length': '50'}),
+            'description': ('django.db.models.fields.TextField', [], {}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_backlog_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_issues_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_kanban_activated': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_wiki_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'issue_statuses': ('django_pgjson.fields.JsonField', [], {}),
+            'issue_types': ('django_pgjson.fields.JsonField', [], {}),
+            'modified_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '250'}),
+            'points': ('django_pgjson.fields.JsonField', [], {}),
+            'priorities': ('django_pgjson.fields.JsonField', [], {}),
+            'roles': ('django_pgjson.fields.JsonField', [], {}),
+            'severities': ('django_pgjson.fields.JsonField', [], {}),
+            'slug': ('django.db.models.fields.SlugField', [], {'blank': 'True', 'max_length': '250', 'unique': 'True'}),
+            'task_statuses': ('django_pgjson.fields.JsonField', [], {}),
+            'us_statuses': ('django_pgjson.fields.JsonField', [], {}),
+            'videoconferences': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '250', 'null': 'True'}),
+            'videoconferences_salt': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '250', 'null': 'True'})
+        },
+        'projects.severity': {
+            'Meta': {'ordering': "['project', 'order', 'name']", 'object_name': 'Severity', 'unique_together': "(('project', 'name'),)"},
+            'color': ('django.db.models.fields.CharField', [], {'max_length': '20', 'default': "'#999999'"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'severities'", 'to': "orm['projects.Project']"})
+        },
+        'projects.taskstatus': {
+            'Meta': {'ordering': "['project', 'order', 'name']", 'object_name': 'TaskStatus', 'unique_together': "(('project', 'name'),)"},
+            'color': ('django.db.models.fields.CharField', [], {'max_length': '20', 'default': "'#999999'"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'task_statuses'", 'to': "orm['projects.Project']"})
+        },
+        'projects.userstorystatus': {
+            'Meta': {'ordering': "['project', 'order', 'name']", 'object_name': 'UserStoryStatus', 'unique_together': "(('project', 'name'),)"},
+            'color': ('django.db.models.fields.CharField', [], {'max_length': '20', 'default': "'#999999'"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'us_statuses'", 'to': "orm['projects.Project']"}),
+            'wip_limit': ('django.db.models.fields.IntegerField', [], {'blank': 'True', 'null': 'True', 'default': 'None'})
+        },
+        'users.role': {
+            'Meta': {'ordering': "['order', 'slug']", 'object_name': 'Role', 'unique_together': "(('slug', 'project'),)"},
+            'computable': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '200'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'permissions': ('djorm_pgarray.fields.TextArrayField', [], {'blank': 'True', 'null': 'True', 'default': '[]', 'dbtype': "'text'"}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'roles'", 'to': "orm['projects.Project']"}),
+            'slug': ('django.db.models.fields.SlugField', [], {'blank': 'True', 'max_length': '250'})
+        },
+        'users.user': {
+            'Meta': {'ordering': "['username']", 'object_name': 'User'},
+            'bio': ('django.db.models.fields.TextField', [], {'blank': 'True', 'default': "''"}),
+            'color': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '9', 'default': "'#31d025'"}),
+            'colorize_tags': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'default_language': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '20', 'default': "''"}),
+            'default_timezone': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '20', 'default': "''"}),
+            'email': ('django.db.models.fields.EmailField', [], {'blank': 'True', 'max_length': '75'}),
+            'email_token': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '200', 'null': 'True', 'default': 'None'}),
+            'full_name': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '256'}),
+            'github_id': ('django.db.models.fields.IntegerField', [], {'blank': 'True', 'null': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'new_email': ('django.db.models.fields.EmailField', [], {'blank': 'True', 'max_length': '75', 'null': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'photo': ('django.db.models.fields.files.FileField', [], {'blank': 'True', 'max_length': '500', 'null': 'True'}),
+            'token': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '200', 'null': 'True', 'default': 'None'}),
+            'username': ('django.db.models.fields.CharField', [], {'max_length': '30', 'unique': 'True'})
+        }
+    }
+
+    complete_apps = ['projects']

taiga/projects/models.py

@@ -162,6 +162,8 @@ class Project(ProjectDefaults, TaggedMixin, models.Model):
     is_private = models.BooleanField(default=False, null=False, blank=True,
                                      verbose_name=_("is private"))
 
+    tags_colors = TextArrayField(dimension=2, null=False, blank=True, verbose_name=_("tags colors"), default={})
+
     class Meta:
         verbose_name = "project"
         verbose_name_plural = "projects"

taiga/projects/serializers.py

@@ -18,7 +18,7 @@ from os import path
 from rest_framework import serializers
 from django.utils.translation import ugettext_lazy as _
 
-from taiga.base.serializers import JsonField, PgArrayField, ModelSerializer
+from taiga.base.serializers import JsonField, PgArrayField, ModelSerializer, TagsColorsField
 from taiga.users.models import Role, User
 from taiga.users.services import get_photo_or_gravatar_url
 from taiga.users.serializers import UserSerializer
@@ -141,6 +141,7 @@ class ProjectSerializer(ModelSerializer):
     stars = serializers.SerializerMethodField("get_stars_number")
     my_permissions = serializers.SerializerMethodField("get_my_permissions")
     i_am_owner = serializers.SerializerMethodField("get_i_am_owner")
+    tags_colors = TagsColorsField(required=False)
 
     class Meta:
         model = models.Project

taiga/projects/services/__init__.py

@@ -36,3 +36,5 @@ from .members import get_members_from_bulk
 
 from .invitations import send_invitation
 from .invitations import find_invited_user
+
+from .tags_colors import update_project_tags_colors_handler

taiga/projects/services/tags_colors.py

@@ -0,0 +1,51 @@
+# Copyright (C) 2014 Andrey Antukh <niwi@niwi.be>
+# Copyright (C) 2014 Jesús Espino <jespinog@gmail.com>
+# Copyright (C) 2014 David Barragán <bameda@dbarragan.com>
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from django.conf import settings
+
+from taiga.projects.services.filters import get_all_tags
+
+from hashlib import sha1
+
+
+def _generate_color(tag):
+    color = sha1(tag.encode("utf-8")).hexdigest()[0:6]
+    return "#{}".format(color)
+
+
+def _get_new_color(tag, predefined_colors, exclude=[]):
+    colors = list(set(predefined_colors) - set(exclude))
+    if colors:
+        return colors[0]
+    return _generate_color(tag)
+
+
+def remove_unused_tags(project):
+    current_tags = get_all_tags(project)
+    project.tags_colors = list(filter(lambda x: x[0] in current_tags, project.tags_colors))
+
+
+def update_project_tags_colors_handler(instance):
+    for tag in instance.tags:
+        defined_tags = map(lambda x: x[0], instance.project.tags_colors)
+        if tag not in defined_tags:
+            used_colors = map(lambda x: x[1], instance.project.tags_colors)
+            new_color = _get_new_color(tag, settings.TAGS_PREDEFINED_COLORS,
+                                       exclude=used_colors)
+            instance.project.tags_colors.append([tag, new_color])
+
+    remove_unused_tags(instance.project)
+    instance.project.save()

taiga/projects/tasks/models.py

@@ -29,6 +29,7 @@ from taiga.projects.userstories.models import UserStory
 from taiga.projects.userstories import services as us_service
 from taiga.projects.milestones.models import Milestone
 from taiga.projects.mixins.blocked import BlockedMixin
+from taiga.projects.services.tags_colors import update_project_tags_colors_handler, remove_unused_tags
 
 
 class Task(OCCModelMixin, WatchedModelMixin, BlockedMixin, TaggedMixin, models.Model):
@@ -139,3 +140,14 @@ def tasks_milestone_close_handler(sender, instance, **kwargs):
         elif not instance.status.is_closed and instance.milestone.closed:
             instance.milestone.closed = False
             instance.milestone.save(update_fields=["closed"])
+
+
+@receiver(models.signals.post_save, sender=Task, dispatch_uid="task_update_project_colors")
+def task_update_project_tags(sender, instance, **kwargs):
+    update_project_tags_colors_handler(instance)
+
+
+@receiver(models.signals.post_delete, sender=Task, dispatch_uid="task_update_project_colors_on_delete")
+def task_update_project_tags_on_delete(sender, instance, **kwargs):
+    remove_unused_tags(instance.project)
+    instance.project.save()

taiga/projects/userstories/models.py

@@ -25,6 +25,7 @@ from taiga.base.utils.slug import ref_uniquely
 from taiga.projects.notifications import WatchedModelMixin
 from taiga.projects.occ import OCCModelMixin
 from taiga.projects.mixins.blocked import BlockedMixin
+from taiga.projects.services.tags_colors import update_project_tags_colors_handler, remove_unused_tags
 
 
 class RolePoints(models.Model):
@@ -165,3 +166,14 @@ def us_close_open_on_status_change(sender, instance, **kwargs):
         service.close_userstory(instance)
     else:
         service.open_userstory(instance)
+
+
+@receiver(models.signals.post_save, sender=UserStory, dispatch_uid="user_story_update_project_colors")
+def us_update_project_tags(sender, instance, **kwargs):
+    update_project_tags_colors_handler(instance)
+
+
+@receiver(models.signals.post_delete, sender=UserStory, dispatch_uid="user_story_update_project_colors_on_delete")
+def us_update_project_tags_on_delete(sender, instance, **kwargs):
+    remove_unused_tags(instance.project)
+    instance.project.save()