Knex/Jade: Cannot read property 'length' of undefined - node.js

Question

Trying to switch out Mongo and put in Postgres (in other words, similar code worked fine with Mongo). Getting Cannot read property 'length' of undefined on the following code. I'm sure it's simple but I'm new to this whole stack so having trouble tying it together. Not a lot of examples on knex, so even though the docs are pretty good, I'm having trouble finding an example to copy.
I'm obviously pulling the right data but am stuck on how to get jade to display it.
Stack: Node/Express/Knex/Postgres/Jade
users.js
router.get('/', function(req, res, next) {
db.select().from('users').limit(1)
.then(function(users) {
console.dir(users)})
.then(function(users) {
res.render('users', {users: users})})
.catch(function(error) {
console.error(error)
})
});
users.jade
extends layout
block content
h1 Users
ul
for user in users
p
input(type="text", name="name", value="#{user.name}")
input(type="text", name="admin", value="#{user.admin}")
input(type="text", name="smsNumber", value="#{user.smsNumber}")
console
[ { uid: 1,
name: 'Don',
admin: 'true',
smsNumber: '4077023951',
created_at: null,
updated_at: null } ]
browser at localhost:3000/users
C:\Users\dvande03\Personal\dailychallenge\views\users.jade:6 4| h1 Users 5| ul > 6| for user in users 7| p 8| input(type="text", name="name", value="#{user.name}") 9| input(type="text", name="admin", value="#{user.admin}") Cannot read property 'length' of undefined
TypeError: C:\Users\dvande03\Personal\dailychallenge\views\users.jade:6
4| h1 Users
5| ul
> 6| for user in users
7| p
8| input(type="text", name="name", value="#{user.name}")
9| input(type="text", name="admin", value="#{user.admin}")
Cannot read property 'length' of undefined
at eval (eval at <anonymous> (C:\Users\dvande03\Personal\dailychallenge\node_modules\jade\lib\index.js:218:8), <anonymous>:51:31)
at eval (eval at <anonymous> (C:\Users\dvande03\Personal\dailychallenge\node_modules\jade\lib\index.js:218:8), <anonymous>:106:4)
at eval (eval at <anonymous> (C:\Users\dvande03\Personal\dailychallenge\node_modules\jade\lib\index.js:218:8), <anonymous>:119:22)
at res (C:\Users\dvande03\Personal\dailychallenge\node_modules\jade\lib\index.js:219:38)
at Object.exports.renderFile (C:\Users\dvande03\Personal\dailychallenge\node_modules\jade\lib\index.js:380:38)
at Object.exports.renderFile (C:\Users\dvande03\Personal\dailychallenge\node_modules\jade\lib\index.js:370:21)
at View.exports.__express [as engine] (C:\Users\dvande03\Personal\dailychallenge\node_modules\jade\lib\index.js:417:11)
at View.render (C:\Users\dvande03\Personal\dailychallenge\node_modules\express\lib\view.js:126:8)
at tryRender (C:\Users\dvande03\Personal\dailychallenge\node_modules\express\lib\application.js:639:10)
at EventEmitter.render (C:\Users\dvande03\Personal\dailychallenge\node_modules\express\lib\application.js:591:3)
at ServerResponse.render (C:\Users\dvande03\Personal\dailychallenge\node_modules\express\lib\response.js:961:7)
at C:\Users\dvande03\Personal\dailychallenge\routes\users.js:11:13
at tryCatcher (C:\Users\dvande03\Personal\dailychallenge\node_modules\bluebird\js\main\util.js:24:31)
at Promise._settlePromiseFromHandler (C:\Users\dvande03\Personal\dailychallenge\node_modules\bluebird\js\main\promise.js:454:31)
at Promise._settlePromiseAt (C:\Users\dvande03\Personal\dailychallenge\node_modules\bluebird\js\main\promise.js:530:18)
at Promise._settlePromises (C:\Users\dvande03\Personal\dailychallenge\node_modules\bluebird\js\main\promise.js:646:14)

Answer 1

res.render should look like this: res.render(view [, locals] [, callback]), where locals is an object whose properties define local variables for the view.
In your case that means changing the line where you render to:
res.render('users', {users: users})
You pass an object with local variables to render. In the jade-file you use the keys in the object when you want to refer to the values.

Answer 2

Solved it but I don't completely understand why. I commented out the console.dir before the render and it works. Is that because the users in the console.dir .then didn't pass to the render .then?
I accepted the answer above too because without that, I couldn't have gotten here. Thank you #tomtom.