bitbake: toaster: fix help texts not showing for most tasks

These were not being collected properly because we were explicitly
excluding variables defined as functions from being stored in the
database. We don't want these to be shown in the variables list, and in
any case it makes sense for these to be stored elsewhere, so create a
separate model to store these.

Fixes [YOCTO #6050].

(Bitbake rev: 0d76a5461ce4bd554ff70a465064969e53edf0a4)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/orm/models.py

@@ -175,9 +175,9 @@ class Task(models.Model):
         return "Not Executed"
 
     def get_description(self):
-        variable = Variable.objects.filter(variable_name=self.task_name, build = self.build)
+        helptext = HelpText.objects.filter(key=self.task_name, area=HelpText.VARIABLE, build=self.build)
         try:
-            return variable[0].description
+            return helptext[0].text
         except IndexError:
             return ''
 
@@ -343,6 +343,15 @@ class VariableHistory(models.Model):
     line_number = models.IntegerField(null=True)
     operation = models.CharField(max_length=16)
 
+class HelpText(models.Model):
+    VARIABLE = 0
+    HELPTEXT_AREA = ((VARIABLE, 'variable'), )
+
+    build = models.ForeignKey(Build, related_name='helptext_build')
+    area = models.IntegerField(choices=HELPTEXT_AREA)
+    key = models.CharField(max_length=100)
+    text = models.TextField()
+
 class LogMessage(models.Model):
     INFO = 0
     WARNING = 1