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POFinding the relation field of a related object in Django
 

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  1. POFinding the relation field of a related object in Django
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    <p>Say I have those two model:</p> <pre><code>class Project(models.Model): name = models.CharField('Name', max_length=250) class ProjectUpdate(models.Model): project = models.ForeignKey(Project) title = models.CharField('Title', max_length=250) </code></pre> <p>Let's say that in my code I work with a Project instance, but I can't assume the object I'm working with is a project instance. I can only assume that it has one or more related models on it which I need to work on.</p> <p>Now I manage to get the related class name using the related manager (project_obj.projectupdate_set). But what I need now is to know which field creates the relation. In this case this would be the "project" field on ProjectUpdate.</p> <p>The only place where I find a reference to it is in the <code>core_filters</code> property of the related manager which gives me: {'project__id': 1}</p> <p>I probably could use this, but it doesn't feel right.</p> <p>Any idea ?</p> <p><strong>Edit</strong>:</p> <p>Here's the properties of the RelatedManager:</p> <pre><code>['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', '_copy_to_model', '_db', '_inherited', '_insert', '_set_creation_counter', '_update', 'add', 'aggregate', 'all', 'annotate', 'bulk_create', 'clear', 'complex_filter', 'contribute_to_class', 'core_filters', 'count', 'create', 'creation_counter', 'dates', 'db', 'db_manager', 'defer', 'distinct', 'exclude', 'exists', 'extra', 'filter', 'get', 'get_empty_query_set', 'get_or_create', 'get_prefetch_query_set', 'get_query_set', 'in_bulk', 'instance', 'iterator', 'latest', 'model', 'none', 'only', 'order_by', 'prefetch_related', 'raw', 'remove', 'reverse', 'select_for_update', 'select_related', 'update', 'using', 'values', 'values_list'] </code></pre>
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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