An inbox between two members — conversations, per-person unread marks,
photos, blocking. Not live chat: that needs a connection held open per
signed-in member, which the sync workers cannot do.
Membership of the conversation is the whole access rule and is checked on
every hit, answering 404 rather than 403 so a member cannot tell a
conversation that is not theirs from one that does not exist. A picture
in a private message is checked the same way: on the board being signed
in is enough, here it is nowhere near.
Blocking is symmetric. One row stops both directions, and you can only
lift your own. A block that silenced only the blocked person would leave
the blocker writing freely, which is a megaphone rather than a safety
feature. Enforced in the handlers, with a test that posts from a page
held open from before the block.
Erasing a member deletes their private messages, both sides, and their
pictures off disk. A thread outlives its author because other people
replied; a two-party exchange has no remainder, and keeping half of
erased correspondence is what erasure exists to prevent. The guard added
in c9c549e did its job: it failed the moment the new tables landed and
named all four columns.
The part that needed care: schema.sql is all CREATE TABLE IF NOT EXISTS,
so it can add a table and nothing else. Every change so far happened to
be a new table. Letting an attachment belong to a message is not — and
SQLite cannot do it in place, because the table carries a CHECK
constraint and there is no DROP CONSTRAINT. Verified before building on
it: ALTER TABLE ADD COLUMN succeeds and the next insert is refused.
So migrations.py, numbered steps recorded in PRAGMA user_version, run
after the schema so a fresh database finds its work already done. Step 1
rebuilds attachments the documented way. Tested against a database built
in the old shape with rows in it, because a migration tested only on a
fresh database is tested against the one case it was never needed for —
including that the rebuilt CHECK is as strict as the one it replaced.
229 tests.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NizVpJ2dwzCbjCrTLCjeHn
44 lines
1.5 KiB
HTML
44 lines
1.5 KiB
HTML
{% extends "base.html" %}
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{% block title %}Privados{% endblock %}
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{% block main %}
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<div class="feed-head">
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<h1>Mensajes privados</h1>
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</div>
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{% if people %}
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<form class="card" method="post" action="{{ url_for('messages.start') }}">
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<input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
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<label for="para">Escribir a</label>
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<select id="para" name="member_id">
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{% for person in people %}
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<option value="{{ person.id }}">{{ person.display_name }}</option>
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{% endfor %}
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</select>
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<button class="btn" type="submit">Abrir conversación</button>
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</form>
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{% endif %}
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{% if not conversations %}
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<p class="muted">Todavía no tienes conversaciones privadas.</p>
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{% endif %}
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{% for c in conversations %}
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<article class="card">
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<a class="card__title" href="{{ url_for('messages.conversation', conversation_id=c.id) }}">
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{{ c.other_name }}
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{% if c.unread %}<span class="tag">{{ c.unread }}</span>{% endif %}
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</a>
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<p class="muted small">{{ excerpt(c.last_body) or 'Sin mensajes todavía.' }}</p>
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<div class="card__meta">
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{% if c.last_at %}<time>{{ c.last_at }}</time>{% endif %}
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<form method="post" action="{{ url_for('messages.block', member_id=c.other_id) }}"
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data-confirm="Al bloquear a {{ c.other_name }} ninguno de los dos podrá escribir al otro. ¿Seguro?">
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<input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
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<button class="linkish linkish--danger" type="submit">Bloquear</button>
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</form>
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</div>
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</article>
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{% endfor %}
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{% endblock %}
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