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PODJANGO: many-to-many relationship with additional fields
 

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    <p>New to programming and this is very confusing for me... I have 2 models. Department and Crossfunctionalproject. The relationship between the two models creates a join table called Department_Crossfunctionalproject. </p> <p>I have another model called employee. I want to add employees to the Department_Crossfunctionalproject table. How can I do this? </p> <p>I've been following this tutorial: <a href="https://docs.djangoproject.com/en/dev/topics/db/models/#extra-fields-on-many-to-many-relationships" rel="nofollow">https://docs.djangoproject.com/en/dev/topics/db/models/#extra-fields-on-many-to-many-relationships</a>. Can I not do this on the automatically created department_crossfunctionalproject join table that DJANGO creates? </p> <p>I keep getting the following error:</p> <pre><code>CommandError("One or more models did not validate:\n%s" % error_text) django.core.management.base.CommandError: One or more models did not validate: companydatabase.membership:"Department_crossfunctionalproject" has a relationship with model &lt;class 'companydatabase.models.Department_crossfunctionalproject'&gt;, which has either not been installed or is abstract. </code></pre> <p>MODELS:</p> <pre><code>class Crossfunctionalproject(models.Model): nameofproject = models.CharField(max_length=50) def __unicode__(self): return self.nameofproject class Department(models.Model): name = models.CharField(max_length=100) project = models.ManyToManyField(Crossfunctionalproject, null=True, blank=True) class Employee(models.Model): employeenumber = models.CharField(max_length=50) fname = models.CharField(max_length=50, verbose_name='First Name') mname = models.CharField(max_length=50, null=True, blank=True, verbose_name='Middle Name') lname = models.CharField(max_length=50, verbose_name='Last Name') email = models.EmailField(null=True, blank=True, verbose_name='Email') phone = models.CharField(max_length=50, null=True, blank=True, verbose_name='Phone') title = models.CharField(max_length=50, null=True, blank=True, verbose_name='Position') # db table created by DJANGO, I wrote out the model, trying to add extra columns* class Department_crossfunctionalproject(models.Model): department = models.ForeignKey(Department) crossfunctionalproject = models.ForeignKey(Crossfunctonalproject) membership = models.ManyToManyField(Employee, through="Membership") class Membership(models.Model): employee = models.ForeignKey(Employee) department_crossfunctionalproject = models.ForeignKey(Department_crossfunctionalproject) whytheyjoined = models.CharField(max_length=100) </code></pre>
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    1. COYou have a bug in `Employee.title.verbose_name` -> missing `'` at the end.
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    2. COthanks, that was an error made when copying the code into here
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