NEWS/InternalStructure
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So, let's elaborate the stages NEWS goes through for each. |
So, let's elaborate the stages NEWS goes through for each. |
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| − | * Request to view |
+ | == Request to view == |
| − | ## Security layer checks access permissions of user requesting (via cookies) |
+ | # Security layer checks access permissions of user requesting (via cookies) |
| − | ## Security layer checks view permissions of page requested (via 'page i/o' module) |
+ | # Security layer checks view permissions of page requested (via 'page i/o' module) |
| − | ## Translation layer fetches the page from i/o and renders it to html |
+ | # Translation layer fetches the page from i/o and renders it to html |
| − | ## page is returned to user. |
+ | # page is returned to user. |
| − | * Request to Edit |
+ | == Request to Edit == |
| − | ## Security checks user permissions |
+ | # Security checks user permissions |
| − | ## Security checks edit permissions of page |
+ | # Security checks edit permissions of page |
| − | ### If edit is OK, then Translator fetches page and renders it to an edit form |
+ | ## If edit is OK, then Translator fetches page and renders it to an edit form |
| − | ### If edit is not OK, but view is OK, then Translator fetches the page and renders it to 'view raw source' |
+ | ## If edit is not OK, but view is OK, then Translator fetches the page and renders it to 'view raw source' |
| − | ## page is returned to user |
+ | # page is returned to user |
| − | * Preview/save an edit |
+ | == Preview/save an edit == |
| − | ## Security checks user perms and edit perms of the page |
+ | # Security checks user perms and edit perms of the page |
| − | ### If edit is OK then feed to Translator which checks for concurrent edits. |
+ | ## If edit is OK then feed to Translator which checks for concurrent edits. |
| − | #### If no concurrent edits, then render the page as page, and ALSO as edit form. (or save page if saving rather than previewing) |
+ | ### If no concurrent edits, then render the page as page, and ALSO as edit form. (or save page if saving rather than previewing) |
| − | #### If concurrent editing has occured, then render the new page, show diffs, and show current edited version as edit form. |
+ | ### If concurrent editing has occured, then render the new page, show diffs, and show current edited version as edit form. |
| − | ### If edit is not OK, but view is OK, then Translator renders the changes as 'view raw source', but no further editing. |
+ | ## If edit is not OK, but view is OK, then Translator renders the changes as 'view raw source', but no further editing. |
| − | ## page is returned to user |
+ | # page is returned to user |
Revision as of 15:00, 2 May 2008
You can summarise any NEWS request down to four possibilities.
- Request a page to view
- Request a page to edit
- Preview an edited page
- Save an edited page
So, let's elaborate the stages NEWS goes through for each.
Request to view
- Security layer checks access permissions of user requesting (via cookies)
- Security layer checks view permissions of page requested (via 'page i/o' module)
- Translation layer fetches the page from i/o and renders it to html
- page is returned to user.
Request to Edit
- Security checks user permissions
- Security checks edit permissions of page
- If edit is OK, then Translator fetches page and renders it to an edit form
- If edit is not OK, but view is OK, then Translator fetches the page and renders it to 'view raw source'
- page is returned to user
Preview/save an edit
- Security checks user perms and edit perms of the page
- If edit is OK then feed to Translator which checks for concurrent edits.
- If no concurrent edits, then render the page as page, and ALSO as edit form. (or save page if saving rather than previewing)
- If concurrent editing has occured, then render the new page, show diffs, and show current edited version as edit form.
- If edit is not OK, but view is OK, then Translator renders the changes as 'view raw source', but no further editing.
- If edit is OK then feed to Translator which checks for concurrent edits.
- page is returned to user
