[gen] Added the posssibility to create a custom widget that displays an icon for generating a doc from a pod field, but with an additional param allowing to customize the pod context.

doc/version.txt

@@ -1 +1 @@
-0.8.3
+0.8.4

gen/__init__.py

@@ -2435,8 +2435,17 @@ class Pod(Type):
                      sortBy=sortKey, sortOrder=sortOrder, filterKey=filterKey,
                      filterValue=filterValue, maxResults='NO_LIMIT')
             podContext['objects'] = [o.appy() for o in objs['objects']]
+        # Add the field-specific context if present.
         if specificContext:
             podContext.update(specificContext)
+        # If a custom param comes from the request, add it to the context. A
+        # custom param must have format "name:value". Custom params override any
+        # other value in the request, including values from the field-specific
+        # context.
+        customParams = rq.get('customParams', None)
+        if customParams:
+            paramsDict = eval(customParams)
+            podContext.update(paramsDict)
         # Define a potential global styles mapping
         if callable(self.stylesMapping):
             stylesMapping = self.callMethod(obj, self.stylesMapping)

gen/ui/appy.js

@@ -460,13 +460,16 @@ function toggleCookie(cookieId) {
 }
 
 // Function that allows to generate a document from a pod template.
-function generatePodDocument(contextUid, fieldName, podFormat, queryData) {
+function generatePodDocument(contextUid, fieldName, podFormat, queryData,
+                             customParams) {
   var theForm = document.getElementById("podTemplateForm");
   theForm.objectUid.value = contextUid;
   theForm.fieldName.value = fieldName;
   theForm.podFormat.value = podFormat;
   theForm.askAction.value = "False";
   theForm.queryData.value = queryData;
+  if (customParams) { theForm.customParams.value = customParams; }
+  else { theForm.customParams.value = ''; }
   var askActionWidget = document.getElementById(contextUid + '_' + fieldName + '_cb');
   if (askActionWidget && askActionWidget.checked) {
       theForm.askAction.value = "True";

gen/ui/page.pt

@@ -45,6 +45,7 @@
     <input type="hidden" name="podFormat"/>
     <input type="hidden" name="askAction"/>
     <input type="hidden" name="queryData"/>
+    <input type="hidden" name="customParams"/>
   </form>
 </div>
 

pod/renderer.py

@@ -309,7 +309,7 @@ class Renderer:
         if not content and not at:
             raise PodError(DOC_NOT_SPECIFIED)
         # Convert Zope files into Appy wrappers.
-        if content.__class__.__name__ == 'File':
+        if content.__class__.__name__ in ('File', 'Image'):
             content = FileWrapper(content)
         # Guess document format
         if isinstance(content, FileWrapper):