customisable posting warning

app/admin/forms.py

@@ -81,6 +81,7 @@ class EditCommunityForm(FlaskForm):
                ('masonry', _l('Masonry')),
                ('masonry_wide', _l('Wide masonry'))]
     default_layout = SelectField(_l('Layout'), coerce=str, choices=layouts, validators=[Optional()])
+    posting_warning = StringField(_('Posting warning'))
     submit = SubmitField(_l('Save'))
 
     def validate(self, extra_validators=None):

app/admin/routes.py

@@ -252,6 +252,7 @@ def admin_community_edit(community_id):
         community.content_retention = form.content_retention.data
         community.topic_id = form.topic.data if form.topic.data != 0 else None
         community.default_layout = form.default_layout.data
+        community.posting_warning = form.posting_warning.data
 
         icon_file = request.files['icon_file']
         if icon_file and icon_file.filename != '':
@@ -293,6 +294,7 @@ def admin_community_edit(community_id):
         form.content_retention.data = community.content_retention
         form.topic.data = community.topic_id if community.topic_id else None
         form.default_layout.data = community.default_layout
+        form.posting_warning.data = community.posting_warning
     return render_template('admin/edit_community.html', title=_('Edit community'), form=form, community=community,
                            moderating_communities=moderating_communities(current_user.get_id()),
                            joined_communities=joined_communities(current_user.get_id()),

app/community/routes.py

@@ -504,6 +504,8 @@ def add_discussion_post(actor):
     else:
         form.communities.data = community.id
         form.notify_author.data = True
+        if community.posting_warning:
+            flash(community.posting_warning)
 
     return render_template('community/add_discussion_post.html', title=_('Add post to community'), form=form, community=community,
                            markdown_editor=current_user.markdown_editor, low_bandwidth=False, actor=actor,

app/models.py

@@ -65,6 +65,7 @@ class Instance(db.Model):
     gone_forever = db.Column(db.Boolean, default=False)     # True once this instance is considered offline forever - never start trying again
     ip_address = db.Column(db.String(50))
     trusted = db.Column(db.Boolean, default=False)
+    posting_warning = db.Column(db.String(512))
 
     posts = db.relationship('Post', backref='instance', lazy='dynamic')
     post_replies = db.relationship('PostReply', backref='instance', lazy='dynamic')
@@ -354,6 +355,7 @@ class Community(db.Model):
     content_retention = db.Column(db.Integer, default=-1)
     topic_id = db.Column(db.Integer, db.ForeignKey('topic.id'), index=True)
     default_layout = db.Column(db.String(15))
+    posting_warning = db.Column(db.String(512))
 
     ap_id = db.Column(db.String(255), index=True)
     ap_profile_id = db.Column(db.String(255), index=True)

app/templates/admin/edit_community.html

@@ -47,6 +47,7 @@
                 {{ render_field(form.content_retention) }}
                 {{ render_field(form.topic) }}
                 {{ render_field(form.default_layout) }}
+                {{ render_field(form.posting_warning) }}
             {% if not community.is_local() %}
             </fieldset>
             {% endif %}

app/templates/post/post.html

@@ -22,8 +22,8 @@
                                 {% if post.community.ap_id and '@beehaw.org' in post.community.ap_id %}
                                     <p>{{ _('This post is hosted on beehaw.org which has <a href="https://docs.beehaw.org/docs/core-principles/what-is-beehaw/" target="_blank" rel="nofollow">higher standards of behaviour than most places. Be nice</a>.') }}</p>
                                 {% endif %}
-                                {% if post.community.ap_id and '@lemmy.ml' in post.community.ap_id %}
-                                    <p>{{ _('This post is hosted on lemmy.ml which will ban you for saying anything negative about China, Russia or Putin. Tread carefully.') }}</p>
+                                {% if post.community.posting_warning %}
+                                    <p align="center">{{ post.community.posting_warning|safe }}</p>
                                 {% endif %}
                                 {{ render_form(form) }}
                                 {% if not low_bandwidth %}

migrations/versions/944c5ae8f4ba_posting_warning.py

@@ -0,0 +1,38 @@
+"""posting warning
+
+Revision ID: 944c5ae8f4ba
+Revises: 980966fba5f4
+Create Date: 2024-04-18 20:42:54.287260
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '944c5ae8f4ba'
+down_revision = '980966fba5f4'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('community', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('posting_warning', sa.String(length=512), nullable=True))
+
+    with op.batch_alter_table('instance', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('posting_warning', sa.String(length=512), nullable=True))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('instance', schema=None) as batch_op:
+        batch_op.drop_column('posting_warning')
+
+    with op.batch_alter_table('community', schema=None) as batch_op:
+        batch_op.drop_column('posting_warning')
+
+    # ### end Alembic commands ###