initial commit

Author: galij899

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+/lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.cache
+nosetests.xml
+coverage.xml
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+tests/openwisp2/media/
+tests/openwisp2/firmware/
+!tests/openwisp2/firmware/fake-img*.bin
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# editors
+*.komodoproject
+.vscode
+
+# other
+*.DS_Store*
+*~
+._*
+local_settings.py
+*.db
+*.tar.gz
+Pipfile
+
+# celery
+tests/celerybeat*
+
+# pycharm
+.idea

HISTORY.MD

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+History

README.MD

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+django-json-model-widget

json_model_widget/__init__.py

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+{% load static %}
+
+<style>
+    .form-block {
+        margin-left: 170px;
+    }
+
+    .jsonwidgetbutton {
+        padding: 10px 15px;
+    }
+
+    .cursor {
+        cursor: pointer;
+    }
+</style>
+
+<div class="form-block">
+
+    <div id="fieldjson">
+        {% for k,v in json.items %}
+        <p id="jsonrow{{ name }}{{ forloop.counter }}">
+            <select name="jsonkey{{ name }}">
+                {% for pair in col1 %}
+                <option value="{{ pair.id }}"
+                        {% if pair.id== k|add:
+                "0" %}selected{% endif %}>{{ pair }}</option>
+                {% endfor %}
+            </select>
+            <select name="jsonvalue{{ name }}">
+                {% for pair in col2 %}
+                <option value="{{ pair.id }}" {% if pair.id== v %}selected{% endif %}>{{ pair }}</option>
+                {% endfor %}
+            </select>
+            <img class="delete-row-button cursor" src="{% static 'json_model_widget/images/icon-deletepair.svg' %}"
+                 alt="False">
+        </p>
+
+        {% endfor %}
+    </div>
+
+    <input class="jsonwidgetbutton" type="button" id="but" onclick="addrow()" value="Добавить пару"/>
+
+    <script type="text/javascript">
+        if (!$) {
+            $ = django.jQuery;
+        }
+
+        $(document).on('click', '.delete-row-button', function () {
+            $(this).parent('p').remove()
+        })
+
+        function addrow() {
+            console.log("ok");
+            $("#fieldjson").append(`<p><select name="jsonkey{{ name }}">
+            {% for pair in col1 %}
+                <option value="{{ pair.id }}">{{ pair }}</option>
+            {% endfor %}
+        </select>
+        <select name="jsonvalue{{ name }}">
+            {% for pair in col2 %}
+                <option value="{{ pair.id }}">{{ pair }}</option>
+            {% endfor %}
+        </select>
+        <img class="delete-row-button cursor" src="{% static 'json_model_widget/images/icon-deletepair.svg' %}" alt="False">
+        </p>`)
+        };
+    </script>
+
+</div>

json_model_widget/static/json_model_widget/images/icon-deletepair.svg

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+import json
+
+from django.forms import Widget
+from django.template.loader import render_to_string
+
+
+class JsonPairInputs(Widget):
+    """
+    A widget to display JsonField as a list of select field pairs that represent two models.
+
+    Usage:
+    class ArticleAdminForm(forms.ModelForm):
+        class Meta:
+            widgets = {
+                'authors': JsonPairInputs(User, Role)
+            }
+
+    """
+
+    def __init__(self, model1, model2, *args, **kwargs):
+        """
+        A widget to display JsonField as a list of select field pairs that represent two models.
+
+        kwargs:
+        key_attrs -- html attributes applied to the 1st input box pairs
+        val_attrs -- html attributes applied to the 2nd input box pairs
+
+        """
+        self.key_attrs = {}
+        self.val_attrs = {}
+        if "key_attrs" in kwargs:
+            self.key_attrs = kwargs.pop("key_attrs")
+        if "val_attrs" in kwargs:
+            self.val_attrs = kwargs.pop("val_attrs")
+        Widget.__init__(self, *args, **kwargs)
+
+        self.col1 = model1.objects.all()
+        self.col2 = model2.objects.all()
+
+    def render(self, name, value, attrs=None, renderer=None) -> str:
+        """
+
+        Renders widget into an html string
+
+        :param name: field name
+        :param value: json string of a two-tuple list automatically passed in by django
+        :param attrs: automatically passed in by django (unused)
+        :param renderer: automatically passed in by django (unused)
+        :return: rendered string
+        """
+        if value is None or value.strip() is '':
+            value = '{}'
+
+        context = {
+            "col1": self.col1,
+            "col2": self.col2,
+            "json": json.loads(value),
+            "name": name
+        }
+
+        return render_to_string('json_model_widget/json_model_widget.html', context=context)
+
+    def value_from_datadict(self, data, files, name) -> str:
+        """
+        Returns the json representation of the key-value pairs
+        sent in the POST parameters
+
+        :param data: request.POST or request.GET parameters
+        :param files: request.FILES
+        :param name: the name of the field associated with this widget
+        :return: stringified json
+        """
+        res = {}
+
+        if f'jsonkey{name}' in data and f'jsonvalue{name}' in data:
+            keys = data.getlist(f'jsonkey{name}')
+            values = list(map(int, data.getlist(f'jsonvalue{name}')))
+            res = dict(zip(keys, values))
+        return json.dumps(res)

json_model_widget/templates/json_model_widget/json_model_widget.html

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+from setuptools import setup, find_packages
+
+with open('README.md') as readme_file:
+    README = readme_file.read()
+
+with open('HISTORY.md') as history_file:
+    HISTORY = history_file.read()
+
+setup_args = dict(
+    name='django-json-model-widget',
+    version='0.0.1',
+    description='Custom flat json field widget for model pairs',
+    long_description_content_type="text/markdown",
+    long_description=README + '\n\n' + HISTORY,
+    license='MIT',
+    packages=find_packages(),
+    author='Oleg Galichkin',
+    author_email='galij899@yandex.ru',
+    keywords=['django', 'django-admin', 'django-admin-widget'],
+    url='https://github.com/galij899',
+    download_url='https://pypi.org/project/'
+)
+
+if __name__ == '__main__':
+    setup(**setup_args)