Error in linkit_update_7303: Unknown column 'weight' in 'field list'

From what I'm glancing the best course of action would probably be to call 7305 at the beginning of 7303 and add a column check to 7305. Otherwise a lot of logic from linkit_profile_load_all() might have to be replicated.

This patchs does two things.

1. Removed the weight field remove call in 7300. So when upgrading from 7.2, the weight will be migrated as well.
2. Added check to see of the weight field exists in 7305. It will exists in case of an update from 7.2 from now on.

Installations at schema version 7300 will still have trouble passing 7302 7303. If you're not worried about those then the patch should be good to go.

This patch copied from #5. And prevent side effect when change schema function in the future.

This patch also modify linkit_update_7304 function to prevent side effect when schema function changed
(eg. when profile_type or admin_description field removed)

Hi,
I was coming from 2.7 and patch in #11 doesn't work, with the same message as always:

$ drush updb
 Linkit  7303  Fixed 7302. Set URL type to "Entity view page" to preserve current behavior.  
 Linkit  7304  Make sure admin_description can be null.                                      
 Linkit  7305  Add profile 'weight' column.
Do you wish to run all pending updates? (y/n): y
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'weight' in 'field list'                                                                                                                                       [error]
Performed update: linkit_update_7303                                                                                                                                                                                  [ok]

@eliosh you'll probably need to run ALL of the updates again as the patch affects linkit_update_7300.

@fatherbelly I've changed the system table and set schema_version to 7227.
Run drush updb and...

# drush8 updb

 Linkit  7300  Migrate settings from v2 to v3 if needed.                                     
 Linkit  7301  Do nothing. Update the schema version.                                        
 Linkit  7302  Reverted.                                                                     
 Linkit  7303  Fixed 7302. Set URL type to "Entity view page" to preserve current behavior.  
 Linkit  7304  Make sure admin_description can be null.                                      
 Linkit  7305  Add profile 'weight' column.
Do you wish to run all pending updates? (y/n): y
Performed update: linkit_update_7300                                                                                                      [ok]
Performed update: linkit_update_7301                                                                                                      [ok]
Performed update: linkit_update_7302                                                                                                      [ok]
SQLSTATE[42S22]: Column not found: 1054 Unknown column 'weight' in 'field list'                                                           [error]

#11 worked fine for upgrade from 2.7 to 3.6. Have disabled module, replaced files, applied patch and run "drush updb".

Patch # 11 is not working for me, can anyone provide the steps on how to apply the patch and run the updates, please?

This patch might work better. #11 requires that you have not already run 7300. Instead of removing the removal of the 'weight' field I just add it back in 7303. This patch (like #11) also removes the risky use of drupal_get_schema_unprocessed() (it will give you the _current_ schema, but how do you know it represents the expected schema at the given update?).

Patch #17 did the work for me, thanks for that @sthomen !

Thanks for the input, everyone! I've committed the patch from #17 to the 7.x-3.x branch.