Separates out the field rendering part from the whole form rendering macro

Also adds a textarea-specific version that renders rows and cols as
part of the input.

mediagoblin/templates/mediagoblin/utils/wtforms.html

@@ -16,9 +16,8 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #}
 
-{# Auto-render a form as a series of divs #}
+{# Generically render a field #}
-{% macro render_divs(form) -%}
+{% macro render_field_div(field) %}
-  {% for field in form %}
   <div class="form_field_box">
     <div class="form_field_label">{{ field.label }}</div>
     {% if field.description -%}
@@ -33,6 +32,31 @@
       {% endfor %}
     {%- endif %}
   </div>
+{%- endmacro %}
+
+{# Generically render a textarea
+ # ... mostly the same thing except it includes rows and cols #}
+{% macro render_textarea_div(field, rows=8, cols=20) %}
+  <div class="form_field_box">
+    <div class="form_field_label">{{ field.label }}</div>
+    {% if field.description -%}
+      <div class="form_field_description">{{ field.description }}</div>
+    {%- endif %}
+    <div class="form_field_input">{{ field(rows=rows, cols=cols) }}</div>
+    {%- if field.errors -%}
+      {% for error in field.errors %}
+        <div class="form_field_error">
+          {{ error }}
+        </div>
+      {% endfor %}
+    {%- endif %}
+  </div>
+{%- endmacro %}
+
+{# Auto-render a form as a series of divs #}
+{% macro render_divs(form) -%}
+  {% for field in form %}
+    {{ render_field_div(field) }}
   {% endfor %}
 {%- endmacro %}