add a number field

The field has three option :

- lesser or equal than. If null, this option is ignored ;
- greather or equal than. If null, this options is ignored ;
- precision : the number of decimal after the number ;
- text after the field : a text to show after the field.

The field is rendered as an HTML integer input if precision = 0, or a
symfony number field if precision > 0.

ref chill-project/Chill-CustomFields#11

Resources/views/Form/fields.html.twig

@@ -94,4 +94,28 @@
 {% endfor -%}
 </div>
 
-{% endblock choice_with_other_widget %}
+{% endblock choice_with_other_widget %}
+    
+{# extend the integer type to add post_text extension #}
+{% block integer_widget %}
+{%- if post_text is defined and post_text is not empty-%}
+<div class="input_with_post_text">
+{%- endif -%}
+{{ block('form_widget') }}
+{%- if post_text is defined and post_text is not empty-%}
+<span class="cf_post_text">{{ post_text }}</span>
+</div>
+{%- endif -%}
+{% endblock %}
+
+{# extend the number type to add post_text extension #}
+{% block number_widget %}
+{%- if post_text is defined and post_text is not empty-%}
+<div class="input_with_post_text">
+{%- endif -%}
+{{ block('form_widget') }}
+{%- if post_text is defined and post_text is not empty-%}
+<span class="cf_post_text">{{ post_text }}</span>
+</div>
+{%- endif -%}
+{% endblock %}