Select radio item in edit view Django Template-CodePudding

I am making an edit view and I would like to have some radio fields selected when fetching the results. My issue is that I can't make my values of the forloop and the values from database comparing correctly. Let me be more clear with some code. I have these lists named mission_entry and gradings. mission_entry has some grades inside it, a vote from 1 to 5 in each value of the list.

views.py

    mission_entry = MissionEntry.objects.filter(log_entry_id=log_entry_id)
    gradings = range(1,6)

models.py

 GRADING_VALUE = (
    ('1', '1'),
    ('2', '2'),
    ('3', '3'),
    ('4', '4'),
    ('5', '5'),
)
    class MissionEntry(models.Model):
        student = models.ForeignKey(
            Student, on_delete=models.DO_NOTHING, blank=True, null=True)
        mission = models.ForeignKey(
            Mission, on_delete=models.DO_NOTHING, null=True, blank=True)
        log_entry = models.ForeignKey(
            LogEntry, on_delete=models.CASCADE, blank=True, null=True)
        learning_objective = models.ForeignKey(
            LearningObjective, on_delete=models.DO_NOTHING, blank=True, null=True)
        grade = models.CharField(
            max_length=10, choices=GRADING_VALUE, blank=True, null=True)
        comment = models.TextField(null=True, blank=True)
        created_at = models.DateTimeField(auto_now_add=True)
        updated_at = models.DateTimeField(auto_now=True)

template

 {% for lo in mission_entry %}
      <tr>
        <td id='learning_obj'>{{lo.learning_objective.name}}</td>
        {% for grade in gradings %}
          <td>
            <input  {% if lo.grade == grade %}selected{% endif %} type="radio" value="{{grade}}" name="grade{{lo.learning_objective.name}}" id="grade" required/>
          </td>
        {% endfor %}
        <td><input type="text"  name="note" id='note' value="{{lo.comment}}"></td>
      </tr> 
      {% endfor %}

I know that {% if lo.grade == grade %}selected{% endif %} is the wrong piece of code. Basically I am comparing in the template a string with an integer, but I can't understand how to manipulate my variables to compare them. Any suggestion?

CodePudding user response：

As you note, you're comparing strings to integers, which is why it doesn't work. You could change gradings to be strings instead of integers:

gradings = list(map(str, range(1, 6)))

Note, also, that both map and range return a generator - which means you'll only be able to iterate over it once in your template. To fix this, you need to first convert it to a list.

Where map converts every item in the iterable to a string.

Alternatively, you could change your grade field to an IntegerField instead of a CharField. This would be more appropriate if you only intend to store integer values, and would be better suited to things like ordering items by grade in future.