Admin page shows blank.

[hcmuleva]

Hi,
I have metero sample application and I would like to see tables and charts of these application.
Steps which I have performed are as follows:
Step1: created a sample app in meteor using meteor create --full myApp.
Step2: I modify the code to use IronRouter
Step3: included account packages so that I can create user and login into app
step4: included houston:admin package in myApp
step5: restarted myApp and login into app. Now when I give url localhost/admin
it does not sow any collections and also debug console show below errror
meteor.js:930 Exception in callback of async function: Error: Handler with name 'hookWithOptions' already exists.
at MiddlewareStack.create (http://localhost:3000/packages/iron_middleware-stack.js?hash=f7f42efd36f6c9b9761b5c65fab107b7d5a19d35:200:13)
at MiddlewareStack.push (http://localhost:3000/packages/iron_middleware-stack.js?hash=f7f42efd36f6c9b9761b5c65fab107b7d5a19d35:216:22)
at http://localhost:3000/packages/iron_middleware-stack.js?hash=f7f42efd36f6c9b9761b5c65fab107b7d5a19d35:234:12
at Array.forEach (native)
at Function..each..forEach (http://localhost:3000/packages/underscore.js?hash=cde485f60699ff9aced3305f70189e39c665183c:149:11)
at MiddlewareStack.append (http://localhost:3000/packages/iron_middleware-stack.js?hash=f7f42efd36f6c9b9761b5c65fab107b7d5a19d35:230:5)
at http://localhost:3000/packages/iron_middleware-stack.js?hash=f7f42efd36f6c9b9761b5c65fab107b7d5a19d35:236:19
at Array.forEach (native)
at Function..each._.forEach (http://localhost:3000/packages/underscore.js?hash=cde485f60699ff9aced3305f70189e39c665183c:149:11)
at MiddlewareStack.append (http://localhost:3000/packages/iron_middleware-stack.js?hash=f7f42efd36f6c9b9761b5c65fab107b7d5a19d35:230:5)
meteor.js:930 Exception in template helper: ReferenceError: Session is not defined
at Object.Houston._session (http://localhost:3000/packages/houston_admin.js?hash=1b62e7a5df64f30ef2793127dc133cadcc3e81c9:1114:12)
at Object.err (http://localhost:3000/packages/houston_admin.js?hash=1b62e7a5df64f30ef2793127dc133cadcc3e81c9:1261:20)
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3051:16
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:1715:16
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3103:66
at Function.Template._withTemplateInstanceFunc (http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3744:12)
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3102:27
at Object.Spacebars.call (http://localhost:3000/packages/spacebars.js?hash=ebf9381e7fc625d41acb0df14995b7614360858a:172:18)
at http://localhost:3000/packages/houston_admin.js?hash=1b62e7a5df64f30ef2793127dc133cadcc3e81c9:700:26
at Blaze.View. (http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:2734:44)
meteor.js:930 Exception in template helper: ReferenceError: Session is not defined
at Object.Houston._session (http://localhost:3000/packages/houston_admin.js?hash=1b62e7a5df64f30ef2793127dc133cadcc3e81c9:1114:12)
at Object.show (http://localhost:3000/packages/houston_admin.js?hash=1b62e7a5df64f30ef2793127dc133cadcc3e81c9:1264:20)
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3051:16
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:1715:16
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3103:66
at Function.Template._withTemplateInstanceFunc (http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3744:12)
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3102:27
at Object.Spacebars.call (http://localhost:3000/packages/spacebars.js?hash=ebf9381e7fc625d41acb0df14995b7614360858a:172:18)
at http://localhost:3000/packages/houston_admin.js?hash=1b62e7a5df64f30ef2793127dc133cadcc3e81c9:706:26
at Blaze.View. (http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:2734:44)
meteor.js:930 Exception in template helper: ReferenceError: Session is not defined
at Object.Houston._session (http://localhost:3000/packages/houston_admin.js?hash=1b62e7a5df64f30ef2793127dc133cadcc3e81c9:1114:12)
at Object.message (http://localhost:3000/packages/houston_admin.js?hash=1b62e7a5df64f30ef2793127dc133cadcc3e81c9:1267:20)
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3051:16
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:1715:16
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3103:66
at Function.Template._withTemplateInstanceFunc (http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3744:12)
at http://localhost:3000/packages/blaze.js?hash=f33d3dfed63a491d24e3aa07ad66c24b5fe8c761:3102:27
at Spacebars.call (http://localhost:3000/packages/spacebars.js?hash=ebf9381e7fc625d41acb0df14995b7614360858a:172:18)
at Spacebars.mustacheImpl (http://localhost:3000/packages/spacebars.js?hash=ebf9381e7fc625d41acb0df14995b7614360858a:106:25)
at Object.Spacebars.mustache (http://localhost:3000/packages/spacebars.js?hash=ebf9381e7fc625d41acb0df14995b7614360858a:110:39)
Thanks!

[chan71]

I had faced the same error upon accessing http://localhost/admin after houston is installed to view mongodb collections.

When I ran meteor add houston:admin number of iron packages were updated including iron:middleware-stack to 1.0.11. This wasn't good enough though.

Changes to your projects package version selections:

dburles:mongo-collection-instances  added, version 0.3.4
houston:admin                       added, version 2.0.7
iron:controller                     added, version 1.0.12
iron:core                           added, version 1.0.11
iron:dynamic-template               added, version 1.0.12
iron:layout                         added, version 1.0.12
iron:location                       added, version 1.0.11
iron:middleware-stack               added, version 1.0.11
iron:router                         added, version 1.0.12
iron:url                            added, version 1.0.11
lai:collection-extensions           added, version 0.1.4
tmeasday:paginated-subscription     added, version 0.2.4

houston:admin: A zero-config Meteor Admin

After I ran meteor update iron:middleware-stack as suggested here and the admin page was shown.
This time,

Changes to your projects package version selections from updating package versions:
iron:middleware-stack  upgraded from 1.0.11 to 1.1.0

[tomvolek]

I am assuming you are using the accounts package.
In case the above thosn't work. And assuming you Try this:

1. Remove the Houston package meteor remove Houston package : meteor remvoe houston:admin
2. Use a mongo collection management tool like Robomongo or login to Mongo DB on command line and Drop the two Houston collections called "houston_collections" and "houston_admins".
3. Login to your application with the user Id you have designated to be admin and go to the /admin url . Now you will see the message "You are not an Admin. If you need to use the Houston Admin, please ask your Admin to grant you access." . You will see a button saying "Claim Admin" press it and it will add the current logged in user to the Houston-admins collection in Mongo and you will be redirected to the Houston /admin page .

The root cause is this check in the code :
https://github.com/gterrono/houston/blob/master/client/admin_login.html Line 4, the currentUserIsAdmin doesn not return true.

Hope this Helps
Tom