Typo3 9 Routing config generating 404 error - typo3

Question

We have a Typo3 9 server with a number of websites running on it. We also have the news plugin to facilitate the addition of blog posts.
With Typo3 9 the old RealURL system has been depricated in favour of a built in system. This is working for the normal pages but is not working for the news articles.
We have implemented the following YAML confic file which is based off the examples provided by the news plugin and a number of other stack overflow posts. The problem is that while we can confirm that the config is loaded, we get a 404 error:
404 Page not found!
Reason: The requested page does not exist
Current URL: /blog/2020-january/
We then commenced in depth, line by line examinantion of the code to understand what is going wrong. We did manage to render the /blog/2020-january/ page, but it had no content. None of the individual blog pages resolve either.
Are there other configurations that we should look for to enable this functionality? We have had another Typo3 person look at the problem without success.
rootPageId: 156
base: 'https://example.site'
baseVariants: { }
languages:
-
title: English
enabled: true
languageId: '0'
base: /
typo3Language: default
locale: en_AU
iso-639-1: en
navigationTitle: ''
hreflang: ''
direction: ''
flag: au
errorHandling: { }
routes: { }
routeEnhancers:
PageTypeSuffix:
type: PageType
default: '/'
index: '/'
map:
'/': 0
NewsPlugin:
type: Extbase
extension: News
plugin: Pi1
limitToPages:
- 187
- 201
routes:
# Detail view:
- routePath: '/{news_title}'
_controller: 'News::detail'
_arguments: {'news_title': 'news'}
# Categories:
- routePath: '/{category}'
_controller: 'News::list'
_arguments: {'category': 'overwriteDemand/categories'}
# Tags:
- routePath: '/{tag_name}'
_controller: 'News::list'
_arguments: {'tag_name': 'overwriteDemand/tags'}
# Pagination:
- routePath: '/{page}'
_controller: 'News::list'
_arguments: {'page': '#widget_0/currentPage'}
# Archive:
- routePath: '/{localized_archive}/{year}/{month}'
_controller: 'News::archive'
# Date:
- routePath: '/{year}-{month}'
_controller: 'News::list'
_arguments:
year: overwriteDemand/year
month: overwriteDemand/month
defaultController: 'News::list'
defaults:
page: '0'
year: ''
month: ''
requirements:
page: '\d+'
news_title: '^[a-zA-Z0-9].*$'
aspects:
page:
type: StaticRangeMapper
start: '1'
end: '100'
news_title:
type: PersistedPatternMapper
tableName: tx_news_domain_model_news
routeFieldPattern: '^(?P<path_segment>.+)$'
routeFieldResult: '{path_segment}'
category:
type: PersistedAliasMapper
tableName: 'sys_category'
routeFieldName: 'title'
tag_name:
type: PersistedAliasMapper
tableName: 'tx_news_domain_model_tag'
routeFieldName: 'title'
localized_archive:
type: LocaleModifier
default: 'archive'
routeFieldName: 'title'
localeMap:
- languageId: 'de_.*'
value: 'archiv'
- languageId: 'fr_.*'
value: 'archives'
year:
type: StaticRangeMapper
start: '1970'
end: '2099'
month:
type: StaticValueMapper
map:
january: '01'
february: '02'
march: '03'
april: '04'
may: '05'
june: '06'
july: '07'
august: '08'
september: '09'
october: 10
november: 11
december: 12

Answer 1

Please check your code see below code of news_title
routeEnhancers: News: type: Extbase extension: News plugin: Pi1 routes: - routePath: '/{news-title}' _controller: 'News::detail' _arguments: news-title: news aspects: news-title: type: PersistedAliasMapper tableName: tx_news_domain_model_news routeFieldName: path_segment
Remove curly braces from path_segment, remove do it as above or in docs thank you
Please see the official documents https://docs.typo3.org/p/georgringer/news/7.2/en-us/AdministratorManual/BestPractice/Routing/Index.html

Answer 2

After a lot of effort we have success.
Firstly, the final working config:
routeEnhancers:
NewsPlugin:
type: Extbase
extension: News
plugin: Pi1
limitToPages:
- 201
- 187
routes:
-
routePath: '/{news_title}'
_controller: 'News::detail'
_arguments:
news_title: news
-
routePath: '/{category}'
_controller: 'News::list'
_arguments:
category: overwriteDemand/categories
-
routePath: '/{tag_name}'
_controller: 'News::list'
_arguments:
tag_name: overwriteDemand/tags
-
routePath: '/page-{page}'
_controller: 'News::list'
_arguments:
page: '#widget_0/currentPage'
-
routePath: '/{year}/{month}'
_controller: 'News::list'
_arguments:
year: overwriteDemand/year
month: overwriteDemand/month
defaultController: 'News::list'
# defaults:
# page: '0'
# year: ''
# month: ''
requirements:
page: \d+
# news_title: '^[a-zA-Z0-9].*$'
aspects:
page:
type: StaticRangeMapper
start: '1'
end: '100'
news_title:
type: PersistedAliasMapper
tableName: tx_news_domain_model_news
routeFieldName: path_segment
category:
type: PersistedAliasMapper
tableName: sys_category
routeFieldName: title
tag_name:
type: PersistedAliasMapper
tableName: tx_news_domain_model_tag
routeFieldName: title
year:
type: StaticRangeMapper
start: '1970'
end: '2099'
month:
type: StaticRangeMapper
start: '01'
end: '12'
#month:
# type: StaticValueMapper
# map:
# january: '01'
# february: '02'
# march: '03'
# april: '04'
# may: '05'
# june: '06'
# july: '07'
# august: '08'
# september: '09'
# october: 10
# november: 11
# december: 12
The important things:
The pagination path includes the page prefix. There is no ambiguity about what page it is on.
No trailing slashes, additionally, the articles also can't have trailing slashes in the path segment. This can be done in the database and clearing the cache after
No defaults
The different month mapping is due to a requirement to match an existing system
We upgraded from 9.5.15 to 9.5.18. It is not clear if this was required.
In the site package, the default TypoScript template included link.skipControllerAndAction = 1. This needs to be removed to show the friendly urls for the articles in the list view. (See How to properly set url-routing for tx-news in TYPO3 9.5.5?)
Finally, for the date, tag and category filters to work, Disable override demand in List->Plugin->Additional must be unticked.