Added batch_number variable in algorithm scope to allow use it in the…

… expression editor in Processing batch context
qgis · Sep 3, 2019 · a4b9ef7 · a4b9ef7
1 parent 2001e0f
commit a4b9ef7
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/python/plugins/processing/gui/BatchPanel.py b/python/plugins/processing/gui/BatchPanel.py
@@ -217,6 +217,9 @@ def populateByExpression(self, adding=False):
         for k, v in params.items():
             alg_scope.setVariable(k, v, True)
 
+        # add batchCount in the alg scope to be used in the expressions. 0 is only an example value
+        alg_scope.setVariable('batch_number', 0, True)
+
         expression_context.appendScope(alg_scope)
 
         # mark the parameter variables as highlighted for discoverability
@@ -253,6 +256,9 @@ def populateByExpression(self, adding=False):
                 for k, v in params.items():
                     alg_scope.setVariable(k, v, True)
 
+                # add batch row number as evaluable variable in algorithm scope
+                alg_scope.setVariable('batch_number', row, True)
+
                 expression_context.appendScope(alg_scope)
 
                 # rebuild a new expression every time -- we don't want the expression compiler to replace