11. Plugin Dependencies¶
Sometimes you need to be able to share a plugin feature with another. For example imagine you have a series of plugin configured the same way, you might want to make them depend on a central plugin taking care of the configuration that would share it with all the others.
11.1. Declaring dependencies¶
If you want to be able to use a plugin from another, the later needs to be activated before the former. You can ask Errbot to do so by adding a comma separated name list of the plugins your plugin is depending on in the Core section of your plug file like this:
[Core] Name = MyPlugin Module = myplugin DependsOn = OtherPlugin1, OtherPlugin2
11.2. Using dependencies¶
Once a dependent plugin has been declared, you can use it at soon as your plugin is activated.
from errbot import BotPlugin, botcmd class OtherPlugin1(BotPlugin): def activate(self): self.my_variable = 'hello' super().activate()
If you want to use it from MyPlugin:
from errbot import BotPlugin, botcmd class MyPlugin(BotPlugin): @botcmd def hello(self, msg, args): return self.get_plugin('OtherPlugin1').my_variable
Important to note: if you want to use a dependent plugin from within activate, you need to be in activated state, for example:
from errbot import BotPlugin, botcmd class MyPlugin(BotPlugin): def activate(self): super().activate() # <-- needs to be *before* get_plugin self.other = self.get_plugin('OtherPlugin1') @botcmd def hello(self, msg, args): return self.other.my_variable