ZBXNEXT-340, heh

Committed in r44352.
Added new button "Clear history and trends" to scenarios form and added code to handle it.

(1) No new localization strings.

jelisejev CLOSED.

(2) delete_history_by_itemid goes into all history_* tables, even though for web scenarios we know which item is having which type (frontend/server creates them) - do we want to improve this ?

jelisejev Although a good idea, let's leave it as is for now: there are more pressing issues to deal with. CLOSED.

<richlv> split it out as ZBXNEXT-2261 (was not sure whether it's more of a bug or feature... decided that it's minor enough ), now indeed CLOSED

(3) A couple of coding style issues:

1. instead of "isset($_REQUEST['del_history']" we use hasRequest();
2. there's no need to use "&=" in this block, plain "=" will do fine.

kristsk RESOLVED in r44378.

jelisejev CLOSED.

TESTED.

Merged and committed to trunk in r44427.

(4) The new button has to be documented?

martins-v Updated:

• https://www.zabbix.com/documentation/2.4/manual/introduction/whatsnew240#miscellaneous_improvements
• https://www.zabbix.com/documentation/2.4/manual/web_monitoring (screenshot)

RESOLVED.

<richlv> hmm, none of the screenshots seem to show the button - and we should mention it in text, too. we should also mention that clearing history & trends will make the server process the scenario again immediately

jelisejev Looks good now, CLOSED.

looks like two things were not properly done :

• ZBX-8816 - history & trend clearing button shown for template web scenarios
• ZBX-8817 - web scenrario history and trend clearing misses 3 items

'clear' does not appear at all in the docs. this will make it harder for users to find relevant information