id,summary,reporter,owner,description,type,status,component,version,severity,resolution,keywords,cc,stage,has_patch,needs_docs,needs_tests,needs_better_patch,easy,ui_ux 16565,An issue in databrowse's template object_detail.html,leopku,nobody,"1, Steps to reproduce the bug. i, create a module with a foreignkey and set blank=True and null=True. ii, create a instance of the module in step 1st, and leave the FK field empty. iii, install 'databrowse' app and register the model to databrowse. iv, browse the instance detail info. An TemplateSyntaxError should be throw out. 2, Issue detail: TemplateSyntaxError at /databrowse/appname/modelname/objects/objectid/ Caught AttributeError while rendering: 'NoneType' object has no attribute '_get_pk_val' ... ... ... Template error In template /opt/Documents/Source/itman/templates/databrowse/object_detail.html, error at line 13 Caught AttributeError while rendering: 'NoneType' object has no attribute '_get_pk_val' 3,How to fix. Open object_detail.html and go to line 18. change ""{% if field.urls %}"" to ""{% if field and field.urls %}""",Bug,closed,contrib.databrowse,1.3,Normal,fixed,"databrowse, template",,Ready for checkin,1,0,1,1,0,0