Yes.

    obj = get_object_or_404(MyModel.objects.select_related(), whatever=whatever)

I&#39;m trying to find out if it&#39;s possible to post `serialize()` and other data that&#39;s outside the form.

Here&#39;s what I thought would work, but it only sends `&#39;wordlist&#39;` and not the form data.

    $.post(&quot;page.php&quot;,( $(&#39;#myForm&#39;).serialize(), { &#39;wordlist&#39;: wordlist }));


Does anyone have any ideas?

jQuery post() with serialize and extra data

I&#39;ve recently started using ElasticSearch and I can&#39;t seem to make it search for a part of a word.

Example: I have three documents from my couchdb indexed in ElasticSearch:

    {
      &quot;_id&quot; : &quot;1&quot;,
      &quot;name&quot; : &quot;John Doeman&quot;,
      &quot;function&quot; : &quot;Janitor&quot;
    }
    {
      &quot;_id&quot; : &quot;2&quot;,
      &quot;name&quot; : &quot;Jane Doewoman&quot;,
      &quot;function&quot; : &quot;Teacher&quot;
    }
    {
      &quot;_id&quot; : &quot;3&quot;,
      &quot;name&quot; : &quot;Jimmy Jackal&quot;,
      &quot;function&quot; : &quot;Student&quot;
    } 

So now, I want to search for all documents containing &quot;Doe&quot;

    curl http://localhost:9200/my_idx/my_type/_search?q=Doe

That doesn&#39;t return any hits. But if I search for

    curl http://localhost:9200/my_idx/my_type/_search?q=Doeman

It does return one document (John Doeman).

I&#39;ve tried setting different analyzers and different filters as properties of my index. I&#39;ve also tried using a full blown query (for example: 

    {
      &quot;query&quot;: {
        &quot;term&quot;: {
          &quot;name&quot;: &quot;Doe&quot;
        }
      }
    }

)
But nothing seems to work.

How can I make ElasticSearch find both John Doeman and Jane Doewoman when I search for &quot;Doe&quot; ?



**UPDATE**

I tried to use the nGram tokenizer and filter, like Igor proposed, like this:

    {
      &quot;index&quot;: {
        &quot;index&quot;: &quot;my_idx&quot;,
        &quot;type&quot;: &quot;my_type&quot;,
        &quot;bulk_size&quot;: &quot;100&quot;,
        &quot;bulk_timeout&quot;: &quot;10ms&quot;,
        &quot;analysis&quot;: {
          &quot;analyzer&quot;: {
            &quot;my_analyzer&quot;: {
              &quot;type&quot;: &quot;custom&quot;,
              &quot;tokenizer&quot;: &quot;my_ngram_tokenizer&quot;,
              &quot;filter&quot;: [
                &quot;my_ngram_filter&quot;
              ]
            }
          },
          &quot;filter&quot;: {
            &quot;my_ngram_filter&quot;: {
              &quot;type&quot;: &quot;nGram&quot;,
              &quot;min_gram&quot;: 1,
              &quot;max_gram&quot;: 1
            }
          },
          &quot;tokenizer&quot;: {
            &quot;my_ngram_tokenizer&quot;: {
              &quot;type&quot;: &quot;nGram&quot;,
              &quot;min_gram&quot;: 1,
              &quot;max_gram&quot;: 1
            }
          }
        }
      }
    }

The problem I&#39;m having now is that each and every query returns ALL documents.
Any pointers? ElasticSearch documentation on using nGram isn&#39;t great...

How to search for a part of a word with ElasticSearch

Is there any way of using [get_object_or_404][1] and [select_related][2] together or any other way to achieve the result of using these two together(except from putting it in try/except)?? 


  [1]: https://docs.djangoproject.com/en/dev/topics/http/shortcuts/#get-object-or-404
  [2]: https://docs.djangoproject.com/en/dev/ref/models/querysets/#select-related

django : using select_related and get_object_or_404 together

<p>Is there any way of using <a href="https://docs.djangoproject.com/en/dev/topics/http/shortcuts/#get-object-or-404" target="_blank" rel="noopener noreferrer">get_object_or_404</a> and <a href="https://docs.djangoproject.com/en/dev/ref/models/querysets/#select-related" target="_blank" rel="noopener noreferrer">select_related</a> together or any other way to achieve the result of using these two together(except from putting it in try/except)??</p>


I have built a site using Django and I am receiving this annoying error when I am trying to execute a query.

If I restart the Apache server, the error will go away for a short time.

    Traceback:
    File &quot;/usr/local/lib/python2.7/site-packages/django/core/handlers/base.py&quot; in get_response
    100.                     response = callback(request, *callback_args, **callback_kwargs)
    File &quot;/home/fran/cron/views/set_caches.py&quot; in set_caches
    24.         cursor.execute(query, [category[&#39;id&#39;]])
    File &quot;/usr/local/lib/python2.7/site-packages/django/db/backends/util.py&quot; in execute
    15.             return self.cursor.execute(sql, params)
    File &quot;/usr/local/lib/python2.7/site-packages/django/db/backends/mysql/base.py&quot; in execute
    86.             return self.cursor.execute(query, args)
    File &quot;build/bdist.linux-i686/egg/MySQLdb/cursors.py&quot; in execute
    155.         charset = db.character_set_name()

    Exception Type: InterfaceError at /blablabla/
    Exception Value: (0, &#39;&#39;)


InterfaceError (0, &#39;&#39;)

Hey i have looked around through some simliar posts here on SO but havent found anything that has solved my problem. I have the following models,

    from django.db import models
    
    class Areas(models.Model):
    
    	name =  models.CharField(max_length = 120)
    	order_in_sidebar_network = models.IntegerField(blank=True, null=True)
    	order_in_section_network = models.IntegerField(blank=True, null=True)
    
    
    	def __unicode__ (self):
    		return self.area_name
    
    	class Meta:
    		verbose_name_plural = &quot;Areas&quot;
    		verbose_name = &quot;Area&quot;
    
    class Countries(models.Model):
    	name = models.CharField(max_length = 120, help_text = &quot;The name of the country&quot;)
    	area = models.ForeignKey(Areas, verbose_name = &#39;Area&#39;)
    	
    	def __unicode__ (self):
    		return self.name
    
    	class Meta:
    		verbose_name_plural = &quot;Countries&quot;
    		verbose_name = &quot;Country&quot;
    		ordering = [&#39;name&#39;]
    
    
    
    class Offices(models.Model):
    	country = models.ForeignKey(Countries, verbose_name = &#39;Country&#39;)
    	name = models.CharField(max_length = 255, help_text = &quot;The name of this office, IE London&quot;)
    	main_office = models.BooleanField(default= False, help_text = &quot;Is this office a key location?&quot;, verbose_name = &quot;Key Location&quot;)
    	address_1 = models.CharField(max_length = 255, null = True, blank = True)
    	address_2 = models.CharField(max_length = 255, null = True, blank = True)
    	address_3 = models.CharField(max_length = 255, null = True, blank = True)
    	city = models.CharField(max_length = 255, null = True, blank = True)
    	postcode = models.CharField(max_length = 20)
    	tel = models.CharField(max_length = 30, null= True, blank = True, help_text = &quot;Optional telephone contact number&quot;)
    	mobile = models.CharField(max_length = 30, null= True, blank = True, help_text = &quot;Optional mobile contact number&quot;)
    	fax = models.CharField(max_length = 30, null= True, blank = True, help_text = &quot;Optional fax contact number&quot;)
    	data_1 = models.CharField(max_length = 255, null = True, blank = True, help_text = &quot;Optional additional data&quot;, verbose_name = &quot;Additional information&quot;)
    	data_2 = models.CharField(max_length = 255, null = True, blank = True, help_text = &quot;Optional additional data&quot;, verbose_name = &quot;Additional information&quot;)
    	
    	class Meta:
    		verbose_name_plural = &quot;Offices&quot;
    		verbose_name = &quot;Office&quot;
    		ordering = [&#39;name&#39;]
    	
    	def __unicode__(self):
    		return self.name
    	
    class OfficeMembers(models.Model):
    	name = models.CharField(max_length = 60, help_text = &quot;Please tell us this person name&quot;)
    	title = models.CharField(max_length = 100, help_text = &quot;The person&#39;s title, IE Managing Director&quot;)
    	email = models.EmailField(max_length = 255, null = True, blank = True, help_text = &quot;Optional email address for this person&quot;)
    	email2 = models.EmailField(max_length = 255, null = True, blank = True, help_text = &quot;Optional second email address for this person&quot;)
    	phone = models.CharField(max_length = 30, null = True, blank  = True, help_text = &quot;Optional contact number for this person&quot;)
    	mobile = models.CharField(max_length = 30, null = True, blank  = True, help_text = &quot;Optional mobile contact number for this person&quot;)
    	office = models.ForeignKey(Offices, null = True)
    	class Meta:
    		verbose_name_plural = &quot;Office Memebers&quot;
    		verbose_name = &quot;Office memebr&quot;
    		ordering = [&#39;name&#39;]
    
    	def __unicode__(self):
    		return self.name

i have the following view set up

    def index(request):
    	
    	cache_key = &quot;world_areas&quot;
    	cache_time = 60
    	
    	world_areas_cache = cache.get(cache_key)
    		
    	#if no cache is set, grab the objects, and set the cache
    	
    	logger.debug(world_areas)
    	if not world_areas_cache:
    		logger.info(&#39;No cache found grabbing objects&#39;)
    		world_areas = Areas.objects.select_related().all()
    		#cache.set(cache_key, world_areas, cache_time)
    		logger.debug(world_areas)
    	else:
    		logger.info(&quot;Getting from cache&quot;)
    		world_areas = world_areas_cache
    		
    	return render_to_response(&#39;network/index.html&#39;, {&#39;world_areas&#39;:world_areas}, context_instance=RequestContext(request))

trying to iterate over the world_areas object like so

    {% for area in world_areas %}
produces a template syntax error

&gt;  &#39;RelatedManager&#39; object is not iterable

Any one got any ideas why this is happeing? really cant seem to get round this! strangley this is working for me in shell :S am i missing something obvious???

Big thanks to anyone able to help!

&#39;RelatedManager&#39; object is not iterable Django

I am trying to access a `model.filefield` in Django to parse a [CSV][1] file in Python using the `csv` module. It&#39;s working on Windows, but on Mac it gave me this:

    Exception Type: Error

    Exception Value: new-line character seen in unquoted field - do you need to open the file in universal-newline mode?

This is the code:

    myfile = customerbulk.objects.all()[0].fileup

    mydata = csv.reader(myfile)
        for email,mobile,name,civilid in mydata:
            print email,mobile,name,civilid

  [1]: http://en.wikipedia.org/wiki/Comma-separated_values


Open the file in universal-newline mode using the CSV Django module

I googled to find the assert methods list. But it seems like this documentation is very well hidden. Does anyone know where it is?

Where are the Assertion Methods list from Django TestCase?

I&#39;m searching a way to represent my Django project model graphically.

Is there a &quot;native&quot; way to do this kind of [ERD][1] (diagram) ?

---

Update following [@Etienne instructions](https://stackoverflow.com/a/6777376/305189)

Here is an example of how I finally view the PDF representing some models of my django project

    $ python manage.py graph_models app1 app2 ... | dot -Tpdf | evince

- It actually generates the dot data with my applications (app1, app2, ...)
- Passes the result to `dot` to output into PDF format
- Opens the output with `evince`

  [1]: http://en.wikipedia.org/wiki/Entity-relationship_model

Django - Model graphic representation (ERD)

I&#39;m defining my Django models right now and I realized that there wasn&#39;t a `OneToManyField` in the model field types. I&#39;m sure there&#39;s a way to do this, so I&#39;m not sure what I&#39;m missing. I essentially have something like this:

    class Dude(models.Model):
        numbers = models.OneToManyField(&#39;PhoneNumber&#39;)
    
    class PhoneNumber(models.Model):
        number = models.CharField()

In this case, each `Dude` can have multiple `PhoneNumber`s, but the relationship should be unidirectional, in that I don&#39;t need to know from the `PhoneNumber` which `Dude` owns it, per se, as I might have many different objects that own `PhoneNumber` instances, such as a `Business` for example:

    class Business(models.Model):
        numbers = models.OneToManyField(&#39;PhoneNumber&#39;)

What would I replace `OneToManyField` (which doesn&#39;t exist) with in the model to represent this kind of relationship? I&#39;m coming from Hibernate/JPA where declaring a one-to-many relationship was as easy as:

    @OneToMany
    private List&lt;PhoneNumber&gt; phoneNumbers;

How can I express this in Django?  

How to express a One-To-Many relationship in Django?

My model:

    class Sample(models.Model):
        users = models.ManyToManyField(User)

I want to save both `user1` and `user2` in that model:

    user1 = User.objects.get(pk=1)
    user2 = User.objects.get(pk=2)
    sample_object = Sample(users=user1, users=user2)
    sample_object.save()

I know that&#39;s wrong, but I&#39;m sure you get what I want to do. How would you do it ?



How to create an object for a Django model with a many to many field?

Every time I enter in a new player in the Admin portion of Django I get an error message that says &quot;This field is required.&quot;. 

Is there a way to make a field not required without having to create a custom form? Can I do this within models.py or admin.py?

Here&#39;s what my class in models.py looks like.
    
    class PlayerStat(models.Model):
        player = models.ForeignKey(Player)
        
        rushing_attempts = models.CharField(
            max_length = 100,
            verbose_name = &quot;Rushing Attempts&quot;
            )
        rushing_yards = models.CharField(
            max_length = 100,
            verbose_name = &quot;Rushing Yards&quot;
            )
        rushing_touchdowns = models.CharField(
            max_length = 100,
            verbose_name = &quot;Rushing Touchdowns&quot;
            )
        passing_attempts = models.CharField(
            max_length = 100,
            verbose_name = &quot;Passing Attempts&quot;
            )

Thanks 


Can I make an admin field not required in Django without creating a form?

I have a Django model with a start and end date range. I want to enforce validation so that no two records have overlapping date ranges. What&#39;s the simplest way to implement this so that I don&#39;t have to repeat myself writing this logic?

e.g. I don&#39;t want to re-implement this logic in a Form *and* a `ModelForm` *and* an admin form *and* the model&#39;s overridden `save()`.

As far as I know, Django doesn&#39;t make it easy to globally enforce these types of criteria. 

Googling hasn&#39;t been very helpful, since &quot;model validation&quot; typically refers to validating specific model fields, and not the entire model contents, or relations between fields.

Content Type	Original Author	Original Content on Stackoverflow
Question	Neo	View Question on Stackoverflow
Solution 1 - Django	Daniel Roseman	View Answer on Stackoverflow

django : using select_related and get_object_or_404 together

Django Problem Overview

Django Solutions

Solution 1 - Django

How to search for a part of a word with ElasticSearch

jQuery post() with serialize and extra data

Attributions