Do a better job of validating post length

This still doesn't correctly handle the shorter "effective lengths" for handles
and URLs. And it doesn't handle different per-server toot lengths. But it does
catch posts that become too long because the length of the CW is counted as part
of the length of the post body, and gives a validation error rather than
throwing an exception.

brutaldon/forms.py

@@ -1,10 +1,12 @@
 from django import forms
+from django.conf import settings
 
 PRIVACY_CHOICES = (('public', 'Public'),
                    ('unlisted', 'Unlisted'),
                    ('private', 'Private'),
                    ('direct', 'Direct'))
 
+MAX_LENGTH = settings.TOOT_MAX_LENGTH
 
 class LoginForm(forms.Form):
     instance = forms.CharField(label="Instance",
@@ -27,27 +29,40 @@ class SettingsForm(forms.Form):
 
 class PostForm(forms.Form):
     """def status_post(self, status, in_reply_to_id=None, media_ids=None,
-sensitive=False, visibility=None, spoiler_text=None):"""
-    status = forms.CharField(label="Toot", max_length=500, widget=forms.Textarea)
+                       sensitive=False, visibility=None, spoiler_text=None):"""
+    status = forms.CharField(label="Toot", max_length=MAX_LENGTH, widget=forms.Textarea)
     visibility = forms.ChoiceField(label="Toot visibility", choices=PRIVACY_CHOICES,
                                    required=False)
-    spoiler_text = forms.CharField(label="CW or Subject", max_length=500,
+    spoiler_text = forms.CharField(label="CW or Subject", max_length=MAX_LENGTH,
                                    required=False)
     media_file_1 = forms.FileField(label = "Media attachment 1",
                                    required=False)
-    media_text_1 = forms.CharField(label="Describe media attachment 1.", max_length=500,
+    media_text_1 = forms.CharField(label="Describe media attachment 1.",
+                                   max_length=MAX_LENGTH,
                                    required=False)
     media_file_2 = forms.FileField(label = "Media attachment 2",
                                    required=False)
-    media_text_2 = forms.CharField(label="Describe media attachment 2.", max_length=500,
+    media_text_2 = forms.CharField(label="Describe media attachment 2.",
+                                   max_length=MAX_LENGTH,
                                    required=False)
     media_file_3 = forms.FileField(label = "Media attachment 3",
                                    required=False)
-    media_text_3 = forms.CharField(label="Describe media attachment 3.", max_length=500,
+    media_text_3 = forms.CharField(label="Describe media attachment 3.",
+                                   max_length=MAX_LENGTH,
                                    required=False)
     media_file_4 = forms.FileField(label = "Media attachment 4",
                                    required=False)
-    media_text_4 = forms.CharField(label="Describe media attachment 4.", max_length=500,
+    media_text_4 = forms.CharField(label="Describe media attachment 4.",
+                                   max_length=MAX_LENGTH,
                                    required=False)
     media_sensitive = forms.BooleanField(label="Sensitive media?", required=False)
 
+    def clean(self):
+        cleaned_data = super().clean()
+        status = cleaned_data.get("status")
+        spoiler_text = cleaned_data.get("spoiler_text")
+
+        if len(status) + len(spoiler_text) > MAX_LENGTH:
+            raise forms.ValidationError("Max length of toot exceeded: %(max_length)s",
+                                        code="too_long",
+                                        params={"max_length": MAX_LENGTH})

brutaldon/settings.py

@@ -187,3 +187,8 @@ FILE_UPLOAD_HANDLERS = ["django.core.files.uploadhandler.TemporaryFileUploadHand
 # Session serialization
 # Important: whatever you choose has to be able to serialize DateTime, so not JSON.
 SESSION_SERIALIZER = 'django.contrib.sessions.serializers.PickleSerializer'
+
+# Max length of toots
+# Later this will be a user setting, but I am adding it here so that I don't
+# write any magic numbers into the validation code
+TOOT_MAX_LENGTH = 500

brutaldon/static/css/brutaldon.css

@@ -75,6 +75,11 @@ span.account-locked
     margin-left: -16px;
 }
 
+.errorlist
+{
+    color: #FF0000;
+}
+
 @media screen and (max-width: 768px) {
     .media {
         display: block;

brutaldon/static/css/fullbrutalism.css

@@ -282,3 +282,8 @@ label
 {
     max-width: 100%;
 }
+
+.errorlist
+{
+    color: #FF0000;
+}

brutaldon/templates/main/post_minimal_partial.html

@@ -2,6 +2,11 @@
 <form method="post" id="post-form" action="{% url "toot" %}" enctype="multipart/form-data">
     {% csrf_token %}
 
+    <div>
+        {{ form.non_field_errors }}
+        <br>
+    </div>
+
     <div class="field" >
         <label class="label" >{{ form.status.label }}</label>
         <div class="control">
@@ -9,10 +14,6 @@
         </div>
     </div>
 
-    <div>
-        {{ form.errors }}
-    </div>
-
     <div class="field has-addons">
         <div class="control  level is-mobile">
             <img class="image avatar is-48x48 level-item" src="{{ own_acct.avatar_static }}" alt="">

brutaldon/templates/main/post_partial.html

@@ -5,23 +5,28 @@
 {% else %}
         <form method="post" action="{% url "toot" %}" enctype="multipart/form-data">
 {% endif %}
-    {% csrf_token %}
+{% csrf_token %}
 
-    <div class="field">
+<div>
+    {{ form.non_field_errors }}
+    <br>
+</div>
+
+<div class="field">
     <label class="label"> {{ form.spoiler_text.label }}</label>
     <div class="control">
         {% render_field form.spoiler_text class+="input mousetrap" placeholder="Optional" %}
     </div>
-    </div>
+</div>
 
-    <div class="field" >
+<div class="field" >
     <label class="label" >{{ form.status.label }}</label>
     <div class="control">
         {% render_field form.status class+="textarea mousetrap is-primary" rows="4" %}
     </div>
-    </div>
+</div>
 
-    <div class="field">
+<div class="field">
     <label class="label" > {{ form.visibility.label }}</label>
     <div class="control has-icons-left">
         <div class="select">
@@ -31,9 +36,9 @@
             </span>
         </div>
     </div>
-    </div>
+</div>
 
-    <div class="field has-addons">
+<div class="field has-addons">
     <div class="file">
         <label class="file-label">
             {% render_field form.media_file_1 class+="file-input" %}
@@ -50,9 +55,9 @@
     <div class="control is-expanded"> 
         {% render_field form.media_text_1 class+="input mousetrap" placeholder="Describe attachment" %}
     </div>
-    </div>
+</div>
 
-    <div class="field has-addons">
+<div class="field has-addons">
     <div class="file">
         <label class="file-label">
             {% render_field form.media_file_2 class+="file-input" %}
@@ -69,9 +74,9 @@
     <div class="control is-expanded"> 
         {% render_field form.media_text_2 class+="input mousetrap" placeholder="Describe attachment" %}
     </div>
-    </div>
+</div>
 
-    <div class="field has-addons">
+<div class="field has-addons">
     <div class="file">
         <label class="file-label">
             {% render_field form.media_file_3 class+="file-input" %}
@@ -88,8 +93,8 @@
     <div class="control is-expanded"> 
         {% render_field form.media_text_3 class+="input mousetrap" placeholder="Describe attachment" %}
     </div>
-    </div>
-    <div class="field has-addons">
+</div>
+<div class="field has-addons">
     <div class="file">
         <label class="file-label">
             {% render_field form.media_file_4 class+="file-input" %}
@@ -106,52 +111,48 @@
     <div class="control is-expanded"> 
         {% render_field form.media_text_4 class+="input mousetrap" placeholder="Describe attachment" %}
     </div>
-    </div>
+</div>
 
 
-    <div>
-        {{ form.errors }}
-    </div>
-
-    <div class="field has-addons">
+<div class="field has-addons">
     <div class="control level is-mobile">
         <img class="image avatar is-48x48 level-item" src="{{ own_acct.avatar_static }}"
              alt="">
         <input type="submit" class="button is-primary level-item"
                name="toot" value="Toot">
     </div>
-    </div>
+</div>
         </form>
 
         {% if not fullbrutalism %}
-<script type="application/javascript">
-var file1 = document.getElementById("id_media_file_1");
-file1.onchange = function(){
+            <script type="application/javascript">
+             var file1 = document.getElementById("id_media_file_1");
+             file1.onchange = function(){
                  if (file1.files.length > 0)
                      {
                          document.getElementById('media_filename_1').innerHTML =  file1.files[0].name;
                      }
-};
-var file2 = document.getElementById("id_media_file_2");
+             };
+             var file2 = document.getElementById("id_media_file_2");
              file2.onchange = function(){
                  if (file2.files.length > 0)
                      {
                          document.getElementById('media_filename_2').innerHTML =  file2.files[0].name;
                      }
              };
-var file3 = document.getElementById("id_media_file_3");
+             var file3 = document.getElementById("id_media_file_3");
              file3.onchange = function(){
                  if (file3.files.length > 0)
                      {
                          document.getElementById('media_filename_3').innerHTML =  file3.files[0].name;
                      }
              };
-var file4 = document.getElementById("id_media_file_4");
+             var file4 = document.getElementById("id_media_file_4");
              file4.onchange = function(){
                  if (file4.files.length > 0)
                      {
                          document.getElementById('media_filename_4').innerHTML =  file4.files[0].name;
                      }
              };
-</script>
-{% endif %}
+            </script>
+        {% endif %}