add campaigns to homepage

app/main/routes.py

@@ -1,6 +1,7 @@
 from app import db
 from app.main import main
 from app.users.models import User
+from app.campaigns.models import Campaign
 # from forms import LoginForm, RequestResetForm, ResetPasswordForm, EditUserForm, AddUserForm
 from flask import render_template, redirect, url_for, flash, request
 from flask_login import login_required, login_user, current_user, logout_user
@@ -12,6 +13,7 @@ import os
 
 
 @main.route('/homepage')
-def homepage(): 
-    
-    return render_template('homepage.html')
+def homepage():
+    active_campaigns = Campaign.query.filter_by(active=True).all()
+    return render_template('homepage.html',
+                           active_campaigns=active_campaigns)