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feat: add Writing Instructions setting for LLM system prompt (v0.4.4)

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New textarea in Content settings lets admins provide custom instructions
appended to the writer's system prompt. Steers style, structure, voice,
and formatting without editing code.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
peptiderepo
2026-04-19 17:01:54 +07:00
parent 65560ea0b5
commit b0cc93669d
6 changed files with 66 additions and 19 deletions
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19
includes/core/class-content-generator.php
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@@ -32,13 +32,10 @@ class PRAutoBlogger_Content_Generator {
* Generate a blog post from an article idea.
*
* Reads pipeline mode from settings and dispatches to the appropriate method.
*
* Side effects: LLM API calls (1-3 depending on mode), cost logging.
*
* @param PRAutoBlogger_Article_Idea $idea The scored idea to generate content for.
*
* @return string Generated HTML content.
*
* @throws \RuntimeException On generation failure.
*/
public function generate( PRAutoBlogger_Article_Idea $idea ): string {
@@ -51,7 +48,8 @@ class PRAutoBlogger_Content_Generator {
absint( get_option( 'prautoblogger_min_word_count', 800 ) ),
absint( get_option( 'prautoblogger_max_word_count', 2000 ) ),
get_option( 'prautoblogger_niche_description', '' ),
json_decode( get_option( 'prautoblogger_topic_exclusions', '[]' ), true ) ?: []
json_decode( get_option( 'prautoblogger_topic_exclusions', '[]' ), true ) ?: [],
get_option( 'prautoblogger_writing_instructions', '' )
);
if ( 'single_pass' === $mode ) {
@@ -64,8 +62,7 @@ class PRAutoBlogger_Content_Generator {
/**
* Single-pass generation: one LLM call produces the complete article.
*
* @param PRAutoBlogger_Content_Request $request
*
* @param PRAutoBlogger_Content_Request $request Content request with settings.
* @return string Generated HTML content.
*/
private function generate_single_pass( PRAutoBlogger_Content_Request $request ): string {
@@ -249,8 +246,7 @@ class PRAutoBlogger_Content_Generator {
/**
* Build the system prompt shared across all writing stages.
*
* @param PRAutoBlogger_Content_Request $request
*
* @param PRAutoBlogger_Content_Request $request Content request with settings.
* @return string
*/
private function build_writer_system_prompt( PRAutoBlogger_Content_Request $request ): string {
@@ -262,6 +258,13 @@ class PRAutoBlogger_Content_Generator {
$prompt .= ". Write well-researched, engaging, SEO-friendly content. ";
$prompt .= "Use a {$request->get_tone()} tone. ";
$prompt .= "Output HTML content only — no markdown, no code fences, no commentary.";
// Append user-defined writing instructions if configured.
$instructions = trim( $request->get_writing_instructions() );
if ( '' !== $instructions ) {
$prompt .= "\n\nAdditional instructions:\n" . $instructions;
}
return $prompt;
}