How do I get a project's last analysis time (the one you can see in the dashboard) with the REST API of SonarQube?
I am working with SonarQube 4.5.6, but if it's only available on later versions I'd still be interested in how it is done.
[EDIT] API relevant since SonarQube v6.3: api/project_analyses/search
[EDIT] Relevant API for SonarQube LTS v5.6.x: api/projects?versions=true
And since you mention later versions, since SonarQube 5.2:
api/ce/component
: get the pending tasks, in-progress tasks and the last executed task of a given component (usually a project) (documentation)
P.S.: api/components/show
can be used to get the component ID from the project key
P.S.2 : here's a real-life example on public SonarQube project. First get the component ID then query the component -> "submittedAt": "2016-03-07T06:04:31+0100"
(slight difference with the dashboard value, due to the processing time on the scanner side)