Simple template tag that allows you to inspect an object in the context for debugging. It will inspect django models and forms using introspection. Dicts and lists are formatted to truncate long data. Pretty much everything else just displays the str representation + class name.
Example output: http://dsanity.net/introspectiontag.html
Usage:
put tag code as file introspection.py in your templatetags directory. Place the html template in your template path under "inspect_object.html".
Then in your template:
{% load introspection %}
{% inspect_object obj "test object" %}
The first parameter is the object to inspect, the second is the name used for display purposes.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | from django import template
register = template.Library()
class Info(object):
pass
def fixup(text):
t = str(text)
if len(t) > 30:
return str(t)[:27]+"..."
else:
return t
def fixuplist(l):
nl = []
for i in range(0,len(l)):
nl.append(fixup(l[i]))
return nl
def inspect_model_instance(instance):
mm = instance.__class__._meta
model = instance.__class__.__name__
fields = []
for f in mm.fields + mm.many_to_many:
field = Info()
field.name = f.name
field.type = f.__class__.__name__
field.value = fixup(getattr(instance,f.name))
fields.append(field)
return {'model': model, 'fields': fields }
def inspect_form_instance(instance):
fields = []
bound = str(instance.is_bound)
for f in instance.fields.keys():
field = Info()
field.name = f
field.type = instance.fields[f].__class__.__name__
field.widget = instance.fields[f].widget.__class__.__name__
field.initial = fixup(instance.initial.get(f,''))
field.bound = fixup(instance.data.get(f,''))
field.errors = fixuplist(instance[f].errors)
fields.append(field)
return {'bound': bound, 'fields': fields }
def inspect_dict(instance):
keys = []
for k in instance.keys():
key = Info()
key.name = k
key.type = instance[k].__class__.__name__
key.value = fixup(instance[k])
keys.append(key)
return {'keys': keys }
def inspect_object(obj,name=""):
dtype = 'basic'
classname = obj.__class__.__name__
meta = fixup(obj)
if getattr(obj,'__metaclass__',None):
if obj.__metaclass__.__name__ == 'DeclarativeFieldsMetaclass':
dtype = 'form'
meta = inspect_form_instance(obj)
elif obj.__metaclass__.__name__ == 'ModelBase':
dtype = 'model'
meta = inspect_model_instance(obj)
elif classname == 'dict':
dtype = 'dict'
meta = inspect_dict(obj)
elif classname == 'list':
dtype = 'list'
meta = fixuplist(obj)
return {'classname': classname,'name': name, 'dtype': dtype, 'meta': meta}
register.inclusion_tag('inspect_object.html')(inspect_object)
""" Template goes in file: inspect_object.html
<table style="border: 1px solid;background-color: green">
<tr style="background-color:#e2b753"><th>{{name}}({{classname}})</th></tr>
{% ifequal dtype "basic" %}
<tr style="background-color:#F9FBCE"><td style="padding:4px;">{{meta}}</td></tr>
{% endifequal %}
{% ifequal dtype "model" %}
<tr>
<td>
<table style="background-color: green" cellpadding="4px">
<tr><th>Field</th><th>Type</th><th>Value</th></tr>
{% for f in meta.fields %}
<tr style="background-color:{% cycle #F9FBCE,#E1E2D5 %}">
<td>{{ f.name }}</td>
<td>{{ f.type }}</td>
<td>{{ f.value }}</td>
</tr>
{% endfor %}
</table>
</td>
</tr>
{% endifequal %}
{% ifequal dtype "form" %}
<tr>
<td>
<table style="background-color: green;" cellpadding="4px">
<tr>
<th>Field</th>
<th>Type</th>
<th>Widget</th>
<th>Initial</th>
<th>Bound</th>
<th>Errors</th>
</tr>
{% for f in meta.fields %}
<tr style="background-color:{% cycle #F9FBCE,#E1E2D5 %}">
<td>{{ f.name }}</td>
<td>{{ f.type }}</td>
<td>{{ f.widget }}</td>
<td>{{ f.initial }}</td>
<td>{{ f.bound }}</td>
<td>
{% for e in f.errors %}
{{ e }}
{% endfor %}
</td>
</tr>
{% endfor %}
</table>
</td>
</tr>
{% endifequal %}
{% ifequal dtype "dict" %}
<tr>
<td>
<table style="background-color: green" cellpadding="4px">
<tr><th>Key</th><th>Type</th><th>Value</th></tr>
{% for k in meta.keys %}
<tr style="background-color:{% cycle #F9FBCE,#E1E2D5 %}">
<td>{{ k.name }}</td>
<td>{{ k.type }}</td>
<td>{{ k.value }}</td>
</tr>
{% endfor %}
</table>
</td>
</tr>
{% endifequal %}
{% ifequal dtype "list" %}
<tr>
<td>
<table style="background-color: green" cellpadding="4px">
{% for i in meta %}
<tr style="background-color:{% cycle #F9FBCE,#E1E2D5 %}">
<td>{{ i }}</td>
</tr>
{% endfor %}
</table>
</td>
</tr>
{% endifequal %}
</table>
"""
|
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