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PODjango newbie question regarding defining an object with subobjects from models for use in templates
 

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  1. PODjango newbie question regarding defining an object with subobjects from models for use in templates
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    <p>I am somewhat new to Django and have searched for some simple examples of creating objects with subobjects in views so that in templates I can have nested for loops.</p> <p>Here is my models.py for this application...</p> <pre><code>from django.db import models from django import forms class Market(models.Model): name = models.CharField('Market name', max_length=150) state = models.CharField('State', max_length=2) def __unicode__(self): return self.name class Location(models.Model): name = models.CharField('Location name', max_length=150) address1 = models.CharField('Address 1', max_length=200) address2 = models.CharField('Address 2', max_length=200,blank=True) city = models.CharField('City', max_length=100) state = models.CharField('State', max_length=2) zip_code = models.CharField('ZIP', max_length=10) phone = models.CharField('Phone', max_length=20) hours = models.TextField('Hours of operation', max_length=255) quote_text = models.TextField('Customer quote', max_length=500) quote_by = models.CharField('Customer name', max_length=30) yelp_url = models.URLField('Yelp URL', max_length=300,blank=True) image_store = models.ImageField('Storefront image', upload_to='images/locations', max_length=300,blank=True) image_staff = models.ImageField('Staff image', upload_to='images/locations', max_length=300,blank=True) market = models.ForeignKey(Market, verbose_name='Regional market', null=True) def __unicode__(self): return self.name </code></pre> <p>Markets data may look as follows...</p> <pre><code>id = 1 state = 'MO' name = 'St. Louis - Central' id = 2 state = 'MO' name = 'St. Louis - West' id = 3 state = 'IL' name = 'Chicago - South' id = 4 state = 'IL' name = 'Chicago - North' </code></pre> <p>In my views.py I'd like to create an object with a list/array of grouped Market states (distinct) in descending order, each with a subarray of the individual Market names in that State in order to complete a nested forloop in the template.</p> <p>The templating language in Django is really cool in how it prevents a ton of logic from residing betwixt the html, which I like. But I am still wrapping my head around both Python syntax and the need to create all objects exactly the way they need to iterate in the template. </p> <p>Here's what views.py looks like ...</p> <pre><code>def locations_landing(request): marketList = Market.objects.values('state').order_by('-state').distinct() return render_to_response('locations.html', locals()) </code></pre> <p>How to return an object so that my template can perform the following nested looping...</p> <pre><code>{% for st in stateList.all %} &lt;h4&gt;{{ st.state }}&lt;/h4&gt; {% for mkt in stateList.marketList.all %} &lt;p&gt;* &lt;a href="#"&gt;{{ mkt.name }}&lt;/a&gt;&lt;/p&gt; {% endfor %} {% endfor %} </code></pre> <p>This would result in the following rendered in html based on my data samples above...</p> <pre><code>&lt;h4&gt;MO&lt;/h4&gt; &lt;p&gt;* St. Louis - Central&lt;/p&gt; &lt;p&gt;* St. Louis - West&lt;/p&gt; &lt;h4&gt;IL&lt;/h4&gt; &lt;p&gt;* Chicago - South&lt;/p&gt; &lt;p&gt;* Chicago - North&lt;/p&gt; </code></pre> <p>BTW, there are no errors in any of the .PY code samples above, all is well, I just need some guidance on creating the object correctly in the view so the template does it's thing.</p>
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