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API Sequences: node life cycle
(in Drupal 4.6.x)
… during the building of the various pages creating and editing a custom node…, as noted on a 4.6.3 installation during the development of the helpdesk module
| Sequence of hooks fired | 1: New | 2: Preview | 3: Submit invalid new |
4: Submit valid new |
5: Redirect after create |
6 View node | 7: Edit node | 8: Track node |
|---|---|---|---|---|---|---|---|---|
| hook_menu | X | X | X | X | X | X | X | X |
| hook_access | 1 per node type | |||||||
| hook_node_types | X | |||||||
| hook_user('load') | no uid name |
no uid name |
no uid name |
no uid name |
||||
| hook_load | valid nid | valid nid | valid nid | valid nid | ||||
| hook_nodeapi ('load') | valid nid | valid nid | valid nid | valid nid | ||||
| hook_menu | X | |||||||
| hook_user('load') | no uid name |
|||||||
| hook_validate | builtin fields | builtin fields module fields no object |
builtin fields module fields no object |
builtin fields module fields no object |
builtin fields loaded object |
|||
| hook_nodeapi('validate' | X | X | X | X | valid nid | |||
| hook_nodeapi('fields') | X | |||||||
| hook_insert | builtin fields module fields no object valid nid |
|||||||
| hook_nodeapi('insert') | valid nid | |||||||
| hook_user('load') | no uid name |
no uid name |
||||||
| hook_view | builtin fields module fields no object |
builtin fields loaded object |
valid nid | valid nid | ||||
| hook_nodeapi('view') | X | valid nid | valid nid | |||||
| hook_nodeapi('form pre') | X | X | X | valid nid | ||||
| hook_form | builtin fields | builtin fields module fields no object |
builtin fields module fields no object |
builtin fields loaded object |
||||
| hook_nodeapi('form post') | X | X | X | valid nid | ||||
| hook_nodeapi('form admin') | X | X | X | valid nid | ||||
| hook_nodeapi('form param') | X | X | X | valid nid | ||||
| hook_name | X | X | X | valid nid | ||||
| hook_node_types | X | X | X | X | X | X | X | |
| hook_block | 1 per block | 1 per block | 1 per block | 1 per block | 1 per block | 1 per block | 1 per block | 1 per block |
| hook_help | node/add/<node type> | node/add/<node type> | node/add/<node type> | node/add/<node type> | node/<nid> | node/<nid> | node/<nid>/edit | node/<nid>/track |
The difference between "modules fields" and "loaded object" occurs if the module defines the additional fields it handles as fields as wrapped in an object (as I describe elswehere).
- "Module fields" is just a set of array entries made available, intermixed with the builtin array entries
- "loaded object" referes the same, but when they are returned by core as the wrapper object.
Basically, modules fields are returned from a HTML form, whereas a loaded object comes from the DB.
Of course, any additional calls done by the module will appear somewhere in between these. For instance, helpdesk loads the information about a contract's customer, which is a drupal USER, so hook_user('load') is fired from the module. Similarly, any call to l() causes hook_link to be fired too.