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239 lines
9.0 KiB
239 lines
9.0 KiB
# -*- coding: utf8 -*-
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"""
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FormRender takes care of the rendering of forms to HTML.
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"""
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import datetime
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HTML_FIELD = u'''
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<li class="{classes}">
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<p class="form-field-title">{title}</p>
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<p class="form-field-input">
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{h_input}
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<span class="error">{errors}</span>
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</p>
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</li>
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'''
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HTML_FIELD_CHECKBOX = u'''
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<li class="checkbox {classes}">
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<p class="form-field-input">
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{h_input}
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<p class="form-field-title">{title}</p>
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<span class="error">{errors}</span>
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</p>
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</li>
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'''
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HTML_REQUIRED = u'{0} <abbr title="This field is required" \
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u"class="required">•</span>'
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class FormRender(object):
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"""
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FormRender takes care of the rendering of forms to HTML.
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"""
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field_tpl = {
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"string": u'<input {required} type="text" name="{name}" '
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u'value="{value}" size="{size}" '
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u'class="{classes}" style="{style}" minlength="{minlen}" '
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u' maxlength="{maxlen}" />',
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"integer": u'<input {required} type="number" min="{minval}" '
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u'max="{maxval}" name="{name}" value="{value}" '
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u'class="{classes}" style="{style}" />',
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"float": u'<input {required} type="number" min="{minval}" '
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u'max="{maxval}" step="any" name="{name}" '
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u'value="{value}" class="{classes}" style="{style}" />',
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"date": u'<input {required} type="date" name="{name}" value="{value}" '
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u'min="{minval}" max="{maxval}" class="{classes}" '
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u'style="{style}" />',
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"file": u'<input {required} type="file" name="{name}" '
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u'class="{classes}" style="{style}" />',
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"password": u'<input {required} type="password" minlength="{minlen}" '
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u'name="{name}" value="{value}" class="{classes}" '
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u'style="{style}" />',
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"text": u'<textarea {required} name="{name}" rows="{rows}" '
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u'cols="{cols}" minlength="{minlen}" maxlength="{maxlen}" '
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u'style="{style}" class="{classes}">{value}</textarea>',
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"radio_option": u'<input {checked} type="radio" name="{name}" '
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u'value="{value}" class="{classes}" '
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u'style="{style}">{label}<br/>',
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"select_option": u'<option value="{value}" style="{style}" '
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u'{selected}>{label}</option>',
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"select": u'<select name="{name}" class="{classes}" '
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u'style="{style}">{select_elems}</select>',
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"checkbox": u'<input {checked} type="checkbox" name="{name}" '
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u'value="on" class="{classes}" style="{style}" />',
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}
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def __init__(self, form_def):
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self.form_def = form_def
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def cast_params(self, params):
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"""
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Casts values in `params` dictionary to the correct types and values for
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use in the form rendering.
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"""
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new_params = params.copy()
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if 'required' in new_params:
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if new_params['required'] is False:
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new_params['required'] = ""
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else:
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new_params["required"] = "required"
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if 'classes' in new_params:
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new_params['classes'] = ' '.join(new_params['classes'])
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if 'checked' in new_params:
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if new_params['checked'] is False:
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new_params['checked'] = ""
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else:
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new_params['checked'] = "checked"
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return new_params
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def r_field(self, field_type, **kwargs):
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"""
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Render a generic field to HTML.
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"""
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params = self.cast_params(kwargs)
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method_name = 'r_field_{0}'.format(field_type)
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method = getattr(self, method_name)
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field = method(**params) # pylint: disable=not-callable
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if 'required' in kwargs and kwargs['required'] is True:
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return HTML_REQUIRED.format(field)
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else:
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return field
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def r_field_string(self, name, value, minlen=None, maxlen=None, size=50,
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required=False, classes='', style=""):
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"""
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Render a string field to HTML.
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"""
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tpl = self.field_tpl['string']
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return tpl.format(name=name, value=value, minlen=minlen, maxlen=maxlen,
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size=size, required=required, classes=classes,
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style=style)
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def r_field_integer(self, name, value, minval=None, maxval=None,
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required=False, classes='', style=""):
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"""
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Render a integer field to HTML.
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"""
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tpl = self.field_tpl['integer']
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return tpl.format(name=name, value=value, minval=minval, maxval=maxval,
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required=required, classes=classes, style=style)
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def r_field_float(self, name, value, minval=None, maxval=None,
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required=False, classes='', style=""):
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"""
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Render a float field to HTML.
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"""
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tpl = self.field_tpl['float']
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return tpl.format(name=name, value=value, minval=minval, maxval=maxval,
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required=required, classes=classes, style=style)
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def r_field_date(self, name, value, minval='', maxval='', required=False,
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classes='', style=""):
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"""
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Render a date field to HTML.
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"""
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tpl = self.field_tpl['date']
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if value == "today":
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value = datetime.datetime.now().strftime("%Y-%m-%d")
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if minval == "today":
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minval = datetime.datetime.now().strftime("%Y-%m-%d")
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if maxval == "today":
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maxval = datetime.datetime.now().strftime("%Y-%m-%d")
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return tpl.format(name=name, value=value, minval=minval, maxval=maxval,
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required=required, classes=classes, style=style)
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def r_field_file(self, name, required=False, classes='', style=""):
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"""
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Render a file field to HTML.
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"""
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tpl = self.field_tpl['file']
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return tpl.format(name=name, required=required, classes=classes,
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style=style)
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def r_field_password(self, name, value, minlen=None, required=False,
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classes='', style=""):
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"""
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Render a password field to HTML.
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"""
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tpl = self.field_tpl['password']
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return tpl.format(name=name, value=value, minlen=minlen,
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required=required, classes=classes, style=style)
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def r_field_text(self, name, value, rows=4, cols=80, minlen=None,
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maxlen=None, required=False, classes='', style=""):
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"""
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Render a text field to HTML.
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"""
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tpl = self.field_tpl['text']
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return tpl.format(name=name, value=value, rows=rows, cols=cols,
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minlen=minlen, maxlen=maxlen, required=required,
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classes=classes, style=style)
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def r_field_radio(self, name, value, options, classes='', style=""):
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"""
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Render a radio field to HTML.
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"""
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tpl_option = self.field_tpl['radio_option']
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radio_elems = []
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for o_value, o_label in options:
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checked = ''
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if o_value == value:
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checked = 'checked'
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radio_elems.append(tpl_option.format(name=name,
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value=o_value,
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checked=checked,
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label=o_label,
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classes=classes,
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style=style))
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return u''.join(radio_elems)
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def r_field_checkbox(self, name, checked, classes='', style=""):
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"""
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Render a checkbox field to HTML.
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"""
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tpl = self.field_tpl['checkbox']
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return tpl.format(name=name, checked=checked, classes=classes,
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style=style)
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def r_field_select(self, name, value, options, classes='', style=""):
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"""
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Render a select field to HTML.
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"""
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tpl_option = self.field_tpl['select_option']
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select_elems = []
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for o_value, o_label in options:
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selected = ''
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if o_value == value:
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selected = 'selected'
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select_elems.append(tpl_option.format(value=o_value,
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selected=selected,
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label=o_label,
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style=style))
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tpl = self.field_tpl['select']
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return tpl.format(name=name, select_elems=''.join(select_elems),
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classes=classes, style=style)
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def r_form_line(self, field_type, title, h_input, classes, errors):
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"""
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Render a line (label + input) to HTML.
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"""
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if field_type == 'checkbox':
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html = HTML_FIELD_CHECKBOX
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else:
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html = HTML_FIELD
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return (html.format(classes=' '.join(classes),
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title=title,
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h_input=h_input,
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errors=u', '.join(errors)))
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