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POdjango model/modelForm - How to get dynamic choices in choiceField?
 

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    <p>i'm experimenting with django and the builtin admin interface.</p> <p>I basically want to have a field that is a drop down in the admin UI. The drop down choices should be all the directories available in a specified directory.<br> If i define a field like this:</p> <pre><code>test_folder_list = models.FilePathField(path=/some/file/path) </code></pre> <p>it shows me all the <em>files</em> in the directory, but not the <em>directories</em>. </p> <p><strong>Does anyone know how i can display the folders?</strong> </p> <p>also i tried doing</p> <pre><code>test_folder_list = models.charField(max_length=100, choices=SOME_LIST) </code></pre> <p>where SOME_LIST is a list i populate using some custom code to read the folders in a directory. This works but it doesn't refresh. i.e. the choice list is limited to a snapshot of whatever was there when running the app for the first time.</p> <p>thanks in advance.</p> <hr> <p>update:<br> after some thinking and research i discovered what i want may be to either<br> <strong>1.</strong> create my own widget that is based on forms.ChoiceField<br> or<br> <strong>2.</strong> pass my list of folders to the choice list when it is rendered to the client</p> <p>for <strong>1.</strong> i tried a custom widget. my model looks like </p> <pre><code>class Test1(models.Model): test_folder_ddl = models.CharField(max_length=100) </code></pre> <p>then this is my custom widget: </p> <pre><code>class FolderListDropDown(forms.Select): def __init__(self, attrs=None, target_path): target_folder = '/some/file/path' dir_contents = os.listdir(target_folder) directories = [] for item in dir_contents: if os.path.isdir(''.join((target_folder,item,))): directories.append((item, item),) folder_list = tuple(directories) super(FolderListDropDown, self).__init__(attrs=attrs, choices=folder_list) </code></pre> <p>then i did this in my modelForm</p> <pre><code>class test1Form(ModelForm): test_folder_ddl = forms.CharField(widget=FolderListDropDown()) </code></pre> <p>and it didn't seem to work.What i mean by that is django didn't want to use my widget and instead rendered the default textinput you get when you use a CharField.</p> <p>for <strong>2.</strong> I tried this in my ModelForm</p> <pre><code>class test1Form(ModelForm): test_folder_ddl = forms.CharField(widget=FolderListDropDown()) test_folder_ddl.choices = {some list} </code></pre> <p>I also tried class test1Form(ModelForm): test_folder_ddl = forms.ChoiceField(choices={some list})</p> <p>and it would still render the default char field widget. <strong>Anyone know what i'm doing wrong?</strong></p>
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