* 🔥 kill apiUrl helper, use urlFor helper instead
More consistency of creating urls.
Creates an easier ability to add config changes.
Attention: urlFor function is getting a little nesty, BUT that is for now wanted to make easier and centralised changes to the configs.
The url util need's refactoring anyway.
* 🔥 urlSSL
Remove all urlSSL usages.
Add TODO's for the next commit to re-add logic for deleted logic.
e.g.
- cors helper generated an array of url's to allow requests from the defined config url's -> will be replaced by the admin url if available
- theme handler prefered the urlSSL in case it was defined -> will be replaced by using the urlFor helper to get the blog url (based on the request secure flag)
The changes in this commit doesn't have to be right, but it helped going step by step.
The next commit is the more interesting one.
* 🔥✨ remove forceAdminSSL, add new admin url and adapt logic
I wanted to remove the forceAdminSSL as separate commit, but was hard to realise.
That's why both changes are in one commit:
1. remove forceAdminSSL
2. add admin.url option
- fix TODO's from last commits
- rewrite the ssl middleware!
- create some private helper functions in the url helper to realise the changes
- rename some wordings and functions e.g. base === blog (we have so much different wordings)
- i would like to do more, but this would end in a non readable PR
- this commit contains the most important changes to offer admin.url option
* 🤖 adapt tests
IMPORTANT
- all changes in the routing tests were needed, because each routing test did not start the ghost server
- they just required the ghost application, which resulted in a random server port
- having a random server port results in a redirect, caused by the ssl/redirect middleware
* 😎 rename check-ssl middleware
* 🎨 fix theme-handler because of master rebase
* 🎨🔥 do not store settings in config and make settings cache easier available
- remove remembering settings value in theme config
- if we need a cache value, we are asking the settings cache directly
- instead of settings.getSettingSync we use settings.cache.get
- added TODO:
- think about moving the settings cache out of api/settings
- we could create a folder named cache cache/settings
- this settings cache listens on model changes for settings
- decoupling
* 🔥 remove timezone from config
- no need to store in overrides config and in defaults settings
* 🎨 context object helper
- replace config.get('theme') by settings cache
* 🎨 replace config.get('theme') by settings.cache.get
* 🎨 adapt tests
* fixes from comments
refs #7488
- to be able to refactor the url configuration in ghost, we need to go step by step making this possible
- reduce the usage of forceAdminSSL
- add a urlFor('admin') helper, which returns the admin url + path e.g. http://my-blog.com/blog/ghost
- increase usage of urlFor helper
- do not expose getBaseUrl, use urlFor('home') (home === blog)
closes#7688
- Use `/favicon.ico` and `/favicon.png` in blog app. Depending on type of storage (custom upload = local file storage), serves either from storage adapter with `read()` method or reads the bytes via `fs`.
- Redirects requests for `favicon.ico` to `favicon.png` if custom `png` icon is uploaded and vice versa.
- Redirect requests for `favicon.png` to `favicon.ico` if default icon is used (in `core/shared`).
- Changes the `{{asset}}` helper for favicon to not serve from theme assets anymore. It will either be served the custom blog-icon or the default one.
- The `{{@blog.icon}}` helper renders the url of the **uploaded** blog icon. It won't render the default icon.
refs #7688
Adds an `uploads/icon/` endpoint to the api route to get a seperate entry point for blog icon validations. The blog icon validation will specifically check for images which have icon extensions (`.ico` & `.png`) and throw errors if:
- the icon file size is too big (>100kb)
- the icon is not a squaer
- the icon size is smaller than 32px
- the icon size is larger than 1000px
- the icon is not `.ico` or `.png` extension
TODOs for this PR:
- [X] get image dimensions
- [X] validate for image
- [X] size
- [X] form (must be square)
- [X] type
- [X] dimenstion (min 32px and max 1,000px)
- [X] return appropriate error messages
- [X] write tests
--------------------
TODOs for #7688:
- [X] Figure out, which favicon should be used (uploaded or default) -> #7713
- [ ] Serve and redirect the favicon for any browser requests, incl. redirects -> #7700 [WIP]
- [X] Upload favicon via `general/settings` and implement basic admin validations -> TryGhost/Ghost-Admin#397
- [X] Build server side validations -> this PR
refs #7724
- we already fixed the permissions for the editor
- see 3d3101ad0e
- but as we are inside of a refactoring process, we had two fixtures.json files
- we fixed the fixtures.json in the wrong place
- now that the permissions are used, we can see failing tests
- i have added the correct permissions handling
closes#7766, refs #7579
- ensure we are using the correct brute keys
- ensure we are using req.ip as Ghost is configured with trust proxy option
- tidy up a little
refs #7688
Adds logic in theme settings api to either serve an uploaded favicon and give it the type `upload` or use the default settings `default`, which will serve the favicon from our shared directory.
TODOs for #7688:
- [X] Figure out, which favicon should be used (uploaded or default) -> this PR
- [ ] Serve and redirect the favicon for any browser requests, incl. redirects
- [ ] Upload favicon via `general/settings` and implement basic admin validations -> [WIP] TryGhost/Ghost-Admin#397
- [ ] Built server side validations
refs #7666
Using `urlFor('home')` instead `config.get('url')` in Ghost.
When `urlFor('home', true)` returns the absolute adress of the blog as defined in the config.
Will always return a trailing `/`.
closes#7839
- when a browser sends a request to the API without a trailing slash, we are using connect-slashes to redirect permanently
- but because the CORS middleware was registered after the redirect, the CORS headers got lost
closes#7769
Because Google AMP is bitching around and shows errors in Googles' webmaster tools for missing post images and blog icons, we decided to make AMP optional. It will be enabled by default, but can be disabled in general settings. Once disabled, the `amp` route doesn't work anymore.
This PR contains the back end changes for Ghost-alpha:
- Adds `amp` to settings table incl default setting `true`
- Adds `amp` value to our settings cache
- Changes the route handling of AMP app to check for the `amp` setting first.
- Adds tests to check the route handling and ghost_head output
- Includes changes to `post-lookup.js` as done by @kirrg001 in #7842
* 🛠 bookshelf tarball, bson-objectid
* 🎨 schema changes
- change increment type to string
- add a default fallback for string length 191 (to avoid adding this logic to every single column which uses an ID)
- remove uuid, because ID now represents a global resource identifier
- keep uuid for post, because we are using this as preview id
- keep uuid for clients for now - we are using this param for Ghost-Auth
* ✨ base model: generate ObjectId on creating event
- each new resource get's a auto generate ObjectId
- this logic won't work for attached models, this commit comes later
* 🎨 centralised attach method
When attaching models there are two things important two know
1. To be able to attach an ObjectId, we need to register the `onCreating` event the fetched model!This is caused by the Bookshelf design in general. On this target model we are attaching the new model.
2. We need to manually fetch the target model, because Bookshelf has a weird behaviour (which is known as a bug, see see https://github.com/tgriesser/bookshelf/issues/629). The most important property when attaching a model is `parentFk`, which is the foreign key. This can be null when fetching the model with the option `withRelated`. To ensure quality and consistency, the custom attach wrapper always fetches the target model manual. By fetching the target model (again) is a little performance decrease, but it also has advantages: we can register the event, and directly unregister the event again. So very clean code.
Important: please only use the custom attach wrapper in the future.
* 🎨 token model had overriden the onCreating function because of the created_at field
- we need to ensure that the base onCreating hook get's triggered for ALL models
- if not, they don't get an ObjectId assigned
- in this case: be smart and check if the target model has a created_at field
* 🎨 we don't have a uuid field anymore, remove the usages
- no default uuid creation in models
- i am pretty sure we have some more definitions in our tests (for example in the export json files), but that is too much work to delete them all
* 🎨 do not parse ID to Number
- we had various occurances of parsing all ID's to numbers
- we don't need this behaviour anymore
- ID is string
- i will adapt the ID validation in the next commit
* 🎨 change ID regex for validation
- we only allow: ID as ObjectId, ID as 1 and ID as me
- we need to keep ID 1, because our whole software relies on ID 1 (permissions etc)
* 🎨 owner fixture
- roles: [4] does not work anymore
- 4 means -> static id 4
- this worked in an auto increment system (not even in a system with distributed writes)
- with ObjectId we generate each ID automatically (for static and dynamic resources)
- it is possible to define all id's for static resources still, but that means we need to know which ID is already used and for consistency we have to define ObjectId's for these static resources
- so no static id's anymore, except of: id 1 for owner and id 0 for external usage (because this is required from our permission system)
- NOTE: please read through the comment in the user model
* 🎨 tests: DataGenerator and test utils
First of all: we need to ensure using ObjectId's in the tests. When don't, we can't ensure that ObjectId's work properly.
This commit brings lot's of dynamic into all the static defined id's.
In one of the next commits, i will adapt all the tests.
* 🚨 remove counter in Notification API
- no need to add a counter
- we simply generate ObjectId's (they are auto incremental as well)
- our id validator does only allow ObjectId as id,1 and me
* 🎨 extend contextUser in Base Model
- remove isNumber check, because id's are no longer numbers, except of id 0/1
- use existing isExternalUser
- support id 0/1 as string or number
* ✨ Ghost Owner has id 1
- ensure we define this id in the fixtures.json
- doesn't matter if number or string
* 🎨 functional tests adaptions
- use dynamic id's
* 🎨 fix unit tests
* 🎨 integration tests adaptions
* 🎨 change importer utils
- all our export examples (test/fixtures/exports) contain id's as numbers
- fact: but we ignore them anyway when inserting into the database, see https://github.com/TryGhost/Ghost/blob/master/core/server/data/import/utils.js#L249
- in 0e6ed957cd (diff-70f514a06347c048648be464819503c4L67) i removed parsing id's to integers
- i realised that this ^ check just existed, because the userIdToMap was an object key and object keys are always strings!
- i think this logic is a little bit complicated, but i don't want to refactor this now
- this commit ensures when trying to find the user, the id comparison works again
- i've added more documentation to understand this logic ;)
- plus i renamed an attribute to improve readability
* 🎨 Data-Generator: add more defaults to createUser
- if i use the function DataGenerator.forKnex.createUser i would like to get a full set of defaults
* 🎨 test utils: change/extend function set for functional tests
- functional tests work a bit different
- they boot Ghost and seed the database
- some functional tests have mis-used the test setup
- the test setup needs two sections: integration/unit and functional tests
- any functional test is allowed to either add more data or change data in the existing Ghost db
- but what it should not do is: add test fixtures like roles or users from our DataGenerator and cross fingers it will work
- this commit adds a clean method for functional tests to add extra users
* 🎨 functional tests adaptions
- use last commit to insert users for functional tests clean
- tidy up usage of testUtils.setup or testUtils.doAuth
* 🐛 test utils: reset database before init
- ensure we don't have any left data from other tests in the database when starting ghost
* 🐛 fix test (unrelated to this PR)
- fixes a random failure
- return statement was missing
* 🎨 make changes for invites
* 🎨 schema change
- simply role_id attribute
* 🎨 update invite model
- remove all methods we don't need
- ensure we remove the relation from the model
- ensure we do not allow to call withRelated
* 🎨 adapt api changes
* 🎨 adapt auth module
* 🎨 adapt tests
* 🎨 better error handling
* schema update
refs #7494, refs #7495
This PR is an extracted clean up feature of #7495.
We are using everywhere static id checks (userId === 0 or userId === 1).
This PR moves the static values into the Base model.
This makes it 1. way more readable and 2. we can change the id's in a central place.
I changed the most important occurrences - no tests are touched (yet!).
The background is: when changing from auto increment id (number) to ObjectId's (string) we still need to support id 1 and 0, because Ghost relies on these two static id's.
I would like to support using both: 0/1 as string and 0/1 as number.
1 === owner/internal
0 === external
Another important change:
User Model does not longer define the contextUser method, because i couldn't find a reason?
I looked in Git history, see 6e48275160
* 🎨 use updateClient function to update redirectUri
refs #7654
* 🎨 name instead of clientName
* 🎨 config.get('theme:title') for client name
- initial read can happen from config
* ✨ register public client: client name and description
- no update yet
- for initial client creation
- we forward title/description to Ghost Auth
- TODO: use settings-cache when merged
* ✨ store blog_uri in db
* 🎨 passport logic changes
- use updateClient instead of changeCallbackURL
- be able to update: blog title, blog description, redirectUri and blogUri
- remove retries, they get implemented in passport-ghost soon
- reorder logic a bit
* 🛠 passport-ghost 1.2.0
* 🎨 tests: extend DataGenerator createClient
- set some defaults
* 🎨 tests
- extend tests
- 👻
* ✨ run auth.init in background
- no need to block the bootstrap process
- if client can't be registered, you will see an error
- ensure Ghost-Admin renders correctly
* 🛠 passport-ghost 1.3.0
- retries
* 🎨 use client_uri in Client Schema
- adapt changes
- use blog_uri only when calling the passport-ghost instance
- Ghost uses the client_uri notation to improve readability
* ✨ read blog title/description from settings cache
* 🚨 Ghost Auth returns email instead of email_address
- adapt Ghost
* 🎨 settingsCache is available
- do not destroy the object reference
- added TODO to reconsider the config values for theme
- get one or all cached settings
* 🚨 remove api.init
- this functiion has just wrapped a function to update the settings cache
- if we have multiple tasks todo later, we can re-add
- but for now: this is way easier to read
- adapt test
* 🎨 tests
no issue
- removes count from user checks model
- uses brute express brute with brute-knex adaptor to store persisted data on spam prevention
- implement brute force protection for password/token exchange, password resets and private blogging
* 🔥 remove User model functions
- validateToken
- generateToken
- resetPassword
- all this logic will re-appear in a different way
Token logic:
- was already extracted as separate PR, see https://github.com/TryGhost/Ghost/pull/7554
- we will use this logic in the controller, you will see in the next commits
Reset Password:
Was just a wrapper for calling the token logic and change the password.
We can reconsider keeping the function to call: changePassword and activate the status of the user - but i think it's fine to trigger these two actions from the controlling unit.
* 🔥 remove password reset tests from User model
- we already have unit tests for change password and the token logic
- i will re-check at the end if any test case is missing - but for now i will just burn the tests
* ✨ add token logic to controlling unit
generateResetToken endpoint
- the only change here is instead of calling the User model to generate a token, we generate the token via utils
- we fetch the user by email, and generate a hash and return
resetPassword endpoint
- here we have changed a little bit more
- first of all: we have added the validation check if the new passwords match
- a new helper method to extract the token informations
- the brute force security check, which can be handled later from the new bruteforce middleware (see TODO)
- the actual reset function is doing the steps: load me the user, compare the token, change the password and activate the user
- we can think of wrapping these steps into a User model function
- i was not sure about it, because it is actually part of the controlling unit
[ci skip]
* 🎨 tidy up
- jscs
- jshint
- naming functions
- fixes
* ✨ add a test for resetting the password
- there was none
- added a test to reset the password
* 🎨 add more token tests
- ensure quality
- ensure logic we had
* 🔥 remove compare new password check from User Model
- this part of controlling unit
* ✨ compare new passwords for user endpoint
- we deleted the logic in User Model
- we are adding the logic to controlling unit
* 🐛 spam prevention forgotten can crash
- no validation happend before this middleware
- it just assumes that the root key is present
- when we work on our API, we need to ensure that
1. pre validation happens
2. we call middlewares
3. ...
* 🎨 token translation key
closes#7628
With this PR we expose a public configuration endpoint.
When /ghost is requested, we don't load and render the configurations into the template anymore. Instead, Ghost-Admin can request the public configuration endpoint.
* 🎨 make configuration endpoint public
* 🔥 remove loading configurations in admin app
- do not render them into the default html page
* ✨ load client credentials in configuration endpoint
- this is not a security issue, because we have exposed this information anyway before (by rendering them into the requested html page)
* 🎨 extend existing configuration integration test
* ✨ tests: add ghost-auth to data generator
* ✨ add functional test
* 🔥 remove type/value pattern
* 🎨 do not return stringified JSON objects
* 🎨 one token endpoint
refs #7562
- delete /authentication/ghost
- Ghost-Admin will use /authentication/token for all use cases (password, refresh token and ghost.org authorization code)
- add new grant_type `authorization_code`
* 🎨 update comment description and remove spamPrevention.resetCounter
closes#4172, closes#6948, refs #7491, refs #7488, refs #7542, refs #7484
* 🎨 Co-locate all admin-related code in /admin
- move all the admin related code from controllers, routes and helpers into a single location
- add error handling middleware explicitly to adminApp
- re-order blogApp middleware to ensure the shared middleware is mounted after the adminApp
- TODO: rethink the structure of /admin, this should probably be an internal app
* 💄 Group global middleware together
- There are only a few pieces of middleware which are "global"
- These are needed for the admin, blog and api
- Everything else is only needed in one or two places
* ✨ Introduce a separate blogApp
- create a brand-new blogApp
- mount all blog/theme only middleware etc onto blogApp
- mount error handling on blogApp only
* 🎨 Separate error handling for HTML & API JSON
- split JSON and HTML error handling into separate functions
- re-introduce a way to not output the stack for certain errors
- add more tests around errors & an assertion framework for checking JSON Errors
- TODO: better 404 handling for static assets
Rationale:
The API is very different to the blog/admin panel:
- It is intended to only ever serve JSON, never HTML responses
- It is intended to always serve JSON
Meanwhile the blog and admin panel have no need for JSON errors,
when an error happens on those pages, we should serve HTML pages
which are nicely formatted with the error & using the correct template
* 🐛 Fix checkSSL to work for subapps
- in order to make this work on a sub app we need to use the pattern `req.originalUrl || req.url`
* 🔥 Get rid of decide-is-admin (part 1/2)
- delete decide-is-admin & tests
- add two small functions to apiApp and adminApp to set res.isAdmin
- mount checkSSL on all the apps
- TODO: deduplicate the calls to checkSSL by making blogApp a subApp :D
- PART 2/2: finish cleaning this up by removing it from where it's not needed and giving it a more specific name
Rationale:
Now that we have both an adminApp and an apiApp,
we can temporarily replace this weird path-matching middleware
with middleware that sets res.isAdmin for api & admin
* 🎨 Wire up prettyURLs on all Apps
- prettyURLs is needed for all requests
- it cannot be global because it has to live after asset middleware, and before routing
- this does not result in duplicate redirects, but does result in duplicate checks
- TODO: resolve extra middleware in stack by making blogApp a sub app
* ⏱ Add debug to API setup
* 🎨 Rename blogApp -> parentApp in middleware
* 🎨 Co-locate all blog-related code in /blog
- Move all of the blogApp code from middleware/index.js to blog/app.js
- Move routes/frontend.js to blog/routes.js
- Remove the routes/index.js and routes folder, this is empty now!
- @TODO is blog the best name for this? 🤔
- @TODO sort out the big hunk of asset-related mess
- @TODO also separate out the concept of theme from blog
* 🎉 Replace middleware index with server/app.js
- The final piece of the puzzle! 🎉🎈🎂
- We no longer have our horrendous middleware/index.js
- Instead, we have a set of app.js files, which all use a familiar pattern
* 💄 Error handling fixups
no issue
When using Ghost OAuth, exchanging the authorization code for an access token was returning a token along with an `expires_in` property containing a JavaScript date representation rather than the number of seconds the token is valid for. This was resulting in the client expecting it's access token to be valid until the year 48796(!) and so never attempting to refresh it's access_token.
- return token expiration time of 3600 seconds / 1hr
closes#6629
- i had the case that in gravatar process.env.NODE_ENV was undefined and indexOf of undefined crashe my application
- so always use config to read current env
refs #4172
* 🎨 Use bodyParser only where it is needed
This is a pretty extreme optimisation, however in the interests of killing middleware/index.js it
seemed prudent to move towards not having in there that wasn't strictly necessary 😁
We should reassess how apps do this sort of thing, but it seems pretty sane to declare bodyParsing
if and only if it is necessary.
* 🎨 Move all API code to API router
* 🎨 Refactor API into an App, not just a router
- Apps have their own rendering engines, only the frontend & the admin panel need views
- The API should be JSON only, with minimal middleware
- Individual sections within the API could/should be treated as Routers
* 🎨 Flatten API middleware inclusion
- get rid of the weird middleware object
- move the api-only middleware into the middleware/api folder
* 💄 Combine slashes & uncapitalise middleware
- these bits of middleware belong together
- ideally they should be optimised
* 🎨 Move ghostLocals out of themeHandler
GhostLocals sets several important values which are needed for every part of the application,
admin, api and theme. Therefore, it doesn't make sense for it to be bundled in the themeHandler.
* 🐛 Fix the uncapitalise middleware
- Updated to make correct use of req.baseUrl, req.path, req.url & req.originalUrl
- Updated the tests to actually cover our weird cases
* 🎨 Move ghostVersion logic out of config
* 💄 Group static / asset-related middleware together
* 🔥 Remove /shared/ asset handling
- The 5 files which are located in `/shared/` are all handled by individual calls to `serveSharedFile`
- Therefore this code is redundant
closes#6165
- internal tags has been in labs for a couple of months, we've fixed some bugs & are ready to ship
- removes all code that tests for the labs flag
- also refactors the various usage of the visibility filter into a single util
- all the tests still pass!!!
- this marks #6165 as closed because I think the remaining UI tasks will be handled as part of a larger piece of work
refs #7116, refs #2001
- Changes the way Ghost errors are implemented to benefit from proper inheritance
- Moves all error definitions into a single file
- Changes the error constructor to take an options object, rather than needing the arguments to be passed in the correct order.
- Provides a wrapper so that any errors that haven't already been converted to GhostErrors get converted before they are displayed.
Summary of changes:
* 🐛 set NODE_ENV in config handler
* ✨ add GhostError implementation (core/server/errors.js)
- register all errors in one file
- inheritance from GhostError
- option pattern
* 🔥 remove all error files
* ✨ wrap all errors into GhostError in case of HTTP
* 🎨 adaptions
- option pattern for errors
- use GhostError when needed
* 🎨 revert debug deletion and add TODO for error id's
- 🛠 add bunyan and prettyjson, remove morgan
- ✨ add logging module
- GhostLogger class that handles setup of bunyan
- PrettyStream for stdout
- ✨ config for logging
- @TODO: testing level fatal?
- ✨ log each request via GhostLogger (express middleware)
- @TODO: add errors to output
- 🔥 remove errors.updateActiveTheme
- we can read the value from config
- 🔥 remove 15 helper functions in core/server/errors/index.js
- all these functions get replaced by modules:
1. logging
2. error middleware handling for html/json
3. error creation (which will be part of PR #7477)
- ✨ add express error handler for html/json
- one true error handler for express responses
- contains still some TODO's, but they are not high priority for first implementation/integration
- this middleware only takes responsibility of either rendering html responses or return json error responses
- 🎨 use new express error handler in middleware/index
- 404 and 500 handling
- 🎨 return error instead of error message in permissions/index.js
- the rule for error handling should be: if you call a unit, this unit should return a custom Ghost error
- 🎨 wrap serve static module
- rule: if you call a module/unit, you should always wrap this error
- it's always the same rule
- so the caller never has to worry about what comes back
- it's always a clear error instance
- in this case: we return our notfounderror if serve static does not find the resource
- this avoid having checks everywhere
- 🎨 replace usages of errors/index.js functions and adapt tests
- use logging.error, logging.warn
- make tests green
- remove some usages of logging and throwing api errors -> because when a request is involved, logging happens automatically
- 🐛 return errorDetails to Ghost-Admin
- errorDetails is used for Theme error handling
- 🎨 use 500er error for theme is missing error in theme-handler
- 🎨 extend file rotation to 1w
issue #7452
Remote oauth2 authentication with Ghost.org.
This PR supports:
- oauth2 login or local login
- authentication on blog setup
- authentication on invite
- normal authentication
- does not contain many, many tests, but we'll improve in the next alpha weeks
closes#7423
- Extend our dirty theme override cache clear hack to also reset the asset hash
_ This brings alpha into line with the LTS branch
- This still needs a rewrite for Ghost 1.0.0 🙄
refs #6982
- create config util fn: getContentPath
- we can later let the user change the folder names in contentPath
- get rid of custom/default storage paths
[ci skip]
closes#7313
- Adds `getSanitizedFileName` function to storage/base.js which replaces non A-Z0-9@. chacracters with -
- modifies /api/theme.js so that zip.shortName is consistent throughout.
closes#7350
- When the active theme is overridden, ensure that the activateTheme middleware gets called by removing the `req.app.activeTheme` value.
- Additionally, ensure that the full cache is invalidated
refs #7305
* 🎨 display upgrade alerts with the correct "info" style
* 💄 update use of notifications status/type/location attrs to reflect current usage
closes#7266, closes#7267
- Adds node-archiver as a dependency
- Adds new zip-folder utility
- Switch out exec 'zip' for zip folder utility
- Store generated zips in os.tmpdir
- Don't delete zips from content/themes when uploading or deleting
- Fixes path resolution for delete
closes#7186
- Add a concept of validity to each generator
- Refactor base generator to handle invalid (empty) nodes for both events & the initial generation
- Update the tests a bit, to fix some bugs in the tests
- Ensure the homepage is always present
refs #7204
- Adds a new ThemeValidationError class
- This error has a top level message, but will also contain all the individual errors within the `errorDetails` property
- Updated the API error handling to return `errorDetails` if it is present
