fix: add action_method and reset_url params for Form class

so a form can use GET instead of POST, and reset button can be a
link.  these are needed for new report views

src/wuttaweb/forms/base.py

@@ -161,10 +161,23 @@ class Form:
 
        See also :meth:`set_required()` and :meth:`is_required()`.
 
+    .. attribute:: action_method
+
+       HTTP method to use when submitting form; ``'post'`` is default.
+
     .. attribute:: action_url
 
        String URL to which the form should be submitted, if applicable.
 
+    .. attribute:: reset_url
+
+       String URL to which the reset button should "always" redirect,
+       if applicable.
+
+       This is null by default, in which case it will use standard
+       browser behavior for the form reset button (if shown).  See
+       also :attr:`show_button_reset`.
+
     .. attribute:: cancel_url
 
        String URL to which the Cancel button should "always" redirect,
@@ -227,6 +240,9 @@ class Form:
        Flag indicating whether a Reset button should be shown.
        Default is ``False``.
 
+       Unless there is a :attr:`reset_url`, the reset button will use
+       standard behavior per the browser.
+
     .. attribute:: show_button_cancel
 
        Flag indicating whether a Cancel button should be shown.
@@ -266,7 +282,9 @@ class Form:
             readonly_fields=[],
             required_fields={},
             labels={},
+            action_method='post',
             action_url=None,
+            reset_url=None,
             cancel_url=None,
             cancel_url_fallback=None,
             vue_tagname='wutta-form',
@@ -290,9 +308,11 @@ class Form:
         self.readonly_fields = set(readonly_fields or [])
         self.required_fields = required_fields or {}
         self.labels = labels or {}
+        self.action_method = action_method
         self.action_url = action_url
         self.cancel_url = cancel_url
         self.cancel_url_fallback = cancel_url_fallback
+        self.reset_url = reset_url
         self.vue_tagname = vue_tagname
         self.align_buttons_right = align_buttons_right
         self.auto_disable_submit = auto_disable_submit
@@ -940,10 +960,15 @@ class Form:
         """
         context['form'] = self
         context['dform'] = self.get_deform()
-        context.setdefault('form_attrs', {})
         context.setdefault('request', self.request)
         context['model_data'] = self.get_vue_model_data()
 
+        # set form method, enctype
+        context.setdefault('form_attrs', {})
+        context['form_attrs'].setdefault('method', self.action_method)
+        if self.action_method == 'post':
+            context['form_attrs'].setdefault('enctype', 'multipart/form-data')
+
         # auto disable button on submit
         if self.auto_disable_submit:
             context['form_attrs']['@submit'] = 'formSubmitting = true'

src/wuttaweb/templates/forms/vue_template.mako

@@ -1,8 +1,10 @@
 ## -*- coding: utf-8; -*-
 
 <script type="text/x-template" id="${form.vue_tagname}-template">
-  ${h.form(form.action_url, method='post', enctype='multipart/form-data', **form_attrs)}
+  ${h.form(form.action_url, **form_attrs)}
+    % if form.action_method == 'post':
         ${h.csrf_token(request)}
+    % endif
 
     % if form.has_global_errors():
         % for msg in form.get_global_errors():
@@ -33,7 +35,13 @@
           % endif
 
           % if form.show_button_reset:
-              <b-button native-type="reset">
+              <b-button
+                % if form.reset_url:
+                    tag="a" href="${form.reset_url}"
+                % else:
+                    native-type="reset"
+                % endif
+                >
                 Reset
               </b-button>
           % endif