This is needed to support creating/dumping/loading indexes that use the
gin_trgm_ops operator class on PostgreSQL. These changes are taken from
Rails pull request https://github.com/rails/rails/pull/19090.
Previously this class would be given a project ID which was then used to
retrieve the corresponding Project object. However, in all cases the
Project object was already known as it was used to grab the ID to pass
to ProjectSearchResults. By just passing a Project instead we remove the
need for an extra query as well as the need for some other complexity
in this class.
Instead of plucking IDs this class now uses ActiveRecord::Relation
objects. Plucking IDs is problematic as searching for projects can lead
to a huge amount of IDs being loaded into memory only to be used as an
argument for another query (instead of just using a sub-query).
Previously this used a regular LIKE which is case-sensitive on
PostgreSQL. This ensures that for both PostgreSQL and MySQL the
searching is case-insensitive similar to searching for projects.
Similar to the changes made to Project.search the method
Project.search_by_title now also uses Arel so it can automatically use
ILIKE/LIKE instead of the lower() function.
This chance is broken up in two steps:
1. Use ILIKE on PostgreSQL and LIKE on MySQL, instead of using
"WHERE lower(x) LIKE lower(y)" as ILIKE is significantly faster than
using lower(). In many cases the use of lower() will force a slow
sequence scan.
2. Instead of using 1 query that searches both projects and namespaces
using a JOIN we're using 2 separate queries that are UNION'd
together. Using a JOIN would force a slow sequence scan, using a
UNION avoids this.
This method now uses Arel as Arel automatically uses ILIKE on PostgreSQL
and LIKE on MySQL, removing the need to handle this manually.
This allows the LIKE condition to use an index. Without a GIN + trigram
index LIKE queries using a wildcard at the start _won't_ use an index
and instead perform a sequence scan.
Improved search results filter dropdown
## Current
Currently filter dropdowns on search results page can be **very** long and off the page
## New
Changed over to the new dropdown
See merge request !3183
Upgrade `omniauth-saml` to 1.5.0 and document it's new capabilities.
With this MR I'm upgrading `omniauth-saml` to 1.5.0 to include new and improved functionality. See https://github.com/omniauth/omniauth-saml/blob/master/CHANGELOG.md for more details.
This MR includes new documentation, so @axil can you also take a look?
/cc @DouweM
See merge request !3170
Added discard button to comment form
Also changed the labels on the buttons to better match the action they are completing.
Closes#8057
See merge request !3085
Add error for ajax:error when submitting comments
Fixes#13814
cc @dblessing
See merge request !2976
Support YAML alias/anchor usage in .gitlab-ci.yml
This allows to reuse one job as a template for another one:
```
job1: &JOBTMPL
script: execute-script-for-job
job2: *JOBTMPL
```
This also helps to solve some of the issues in gitlab-org/gitlab-ci#342
See merge request !2958
Yorick PeterseandRobert Speicher
Robert Speicher
Achilleas Pipinellis
Jacob Schatz
Patricio Cano
Patricio Cano
Phil Hughes
Douwe Maan
Dmitriy Zaporozhets
Kamil Trzciński
